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Document and Entity Information (USD $)
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12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2012
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Feb. 22, 2013
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Jun. 30, 2012
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| Entity Information [Line Items] | |||
| Document Type | 10-K | ||
| Amendment Flag | false | ||
| Document Period End Date | Dec. 31, 2012 | ||
| Document Fiscal Year Focus | 2012 | ||
| Document Fiscal Period Focus | FY | ||
| Trading Symbol | DPM | ||
| Entity Registrant Name | DCP MIDSTREAM PARTNERS, LP | ||
| Entity Central Index Key | 0001338065 | ||
| Current Fiscal Year End Date | --12-31 | ||
| Entity Well-known Seasoned Issuer | Yes | ||
| Entity Current Reporting Status | Yes | ||
| Entity Voluntary Filers | No | ||
| Entity Filer Category | Large Accelerated Filer | ||
| Entity Common Stock, Shares Outstanding | 61,346,058 | ||
| Entity Public Float | $ 1,618,328,000 |
| X | ||||||||||
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- Definition
If the value is true, then the document is an amendment to previously-filed/accepted document. No definition available.
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| X | ||||||||||
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- Definition
End date of current fiscal year in the format --MM-DD. No definition available.
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| X | ||||||||||
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- Definition
This is focus fiscal period of the document report. For a first quarter 2006 quarterly report, which may also provide financial information from prior periods, the first fiscal quarter should be given as the fiscal period focus. Values: FY, Q1, Q2, Q3, Q4, H1, H2, M9, T1, T2, T3, M8, CY. No definition available.
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| X | ||||||||||
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- Definition
This is focus fiscal year of the document report in CCYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006. No definition available.
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| X | ||||||||||
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- Definition
The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD. No definition available.
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| X | ||||||||||
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- Definition
The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word "Other". No definition available.
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| X | ||||||||||
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- Definition
A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument. No definition available.
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| X | ||||||||||
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- Definition
Indicate "Yes" or "No" whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure. No definition available.
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| X | ||||||||||
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- Definition
Indicate whether the registrant is one of the following: (1) Large Accelerated Filer, (2) Accelerated Filer, (3) Non-accelerated Filer, (4) Smaller Reporting Company (Non-accelerated) or (5) Smaller Reporting Accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
State aggregate market value of voting and non-voting common equity held by non-affiliates computed by reference to price at which the common equity was last sold, or average bid and asked price of such common equity, as of the last business day of registrant's most recently completed second fiscal quarter. The public float should be reported on the cover page of the registrants form 10K. No definition available.
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| X | ||||||||||
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- Definition
The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Indicate "Yes" or "No" if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. No definition available.
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| X | ||||||||||
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- Definition
Indicate "Yes" or "No" if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Is used on Form Type: 10-K, 10-Q, 8-K, 20-F, 6-K, 10-K/A, 10-Q/A, 20-F/A, 6-K/A, N-CSR, N-Q, N-1A. No definition available.
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| X | ||||||||||
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- Definition
Trading symbol of an instrument as listed on an exchange. No definition available.
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Consolidated Balance Sheets (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
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Dec. 31, 2011
|
|||||
|---|---|---|---|---|---|---|---|
| ASSETS | |||||||
| Cash and cash equivalents | $ 1.3 | $ 7.6 | [1],[2] | ||||
| Accounts receivable: | |||||||
| Trade, net of allowance for doubtful accounts of $0.3 million and $0.3 million, respectively | 95.0 | 108.6 | |||||
| Affiliates | 86.3 | 106.2 | |||||
| Inventories | 74.7 | 87.9 | [2] | ||||
| Unrealized gains on derivative instruments | 49.4 | 41.2 | |||||
| Other | 2.4 | 2.2 | |||||
| Total current assets | 309.1 | 353.7 | [2] | ||||
| Property, plant and equipment, net | 1,727.4 | 1,499.4 | [2] | ||||
| Goodwill | 153.8 | 153.8 | |||||
| Intangible assets, net | 136.9 | 145.3 | |||||
| Investments in unconsolidated affiliates | 558.0 | 107.1 | [2] | ||||
| Unrealized gains on derivative instruments | 69.8 | 6.4 | |||||
| Other long-term assets | 17.0 | 11.7 | |||||
| Total assets | 2,972.0 | 2,277.4 | [2] | ||||
| LIABILITIES AND EQUITY | |||||||
| Trade | 112.6 | 231.7 | |||||
| Affiliates | 33.7 | 46.8 | |||||
| Unrealized losses on derivative instruments | 31.0 | 59.9 | |||||
| Capital spending accrual | 17.3 | 10.5 | |||||
| Other | 38.8 | 31.6 | |||||
| Total current liabilities | 233.4 | 380.5 | |||||
| Long-term debt | 1,620.3 | 746.8 | [2] | ||||
| Unrealized losses on derivative instruments | 7.7 | 32.8 | |||||
| Other long-term liabilities | 27.4 | 19.0 | |||||
| Total liabilities | 1,888.8 | 1,179.1 | [2] | ||||
| Commitments and contingent liabilities: | [2] | ||||||
| Equity: | |||||||
| Predecessor equity | 257.4 | [2] | |||||
| Common unitholders (61,346,058 and 44,848,703 units issued and outstanding, respectively) | 1,062.8 | 654.4 | |||||
| General partner | (0.3) | (4.7) | |||||
| Accumulated other comprehensive loss | (14.7) | (21.2) | [2] | ||||
| Total partners' equity | 1,047.8 | 885.9 | [2] | ||||
| Noncontrolling interests | 35.4 | 212.4 | [2] | ||||
| Total equity | 1,083.2 | 1,098.3 | [2] | ||||
| Total liabilities and equity | $ 2,972.0 | $ 2,277.4 | [2] | ||||
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| X | ||||||||||
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- Definition
Aggregate carrying amount, as of the balance sheet date, of noncurrent assets not separately disclosed in the balance sheet. Noncurrent assets are expected to be realized or consumed after a year or beyond the normal operating cycle, if longer. No definition available.
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| X | ||||||||||
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- Definition
Our interest, prior to our acquisition, in transfers of net assets between entities under common control that represent a change in reporting entity. No definition available.
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| X | ||||||||||
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- Definition
Amount for accounts payable to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Carrying value as of the balance sheet date of obligations incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of receivables arising from transactions with related parties due within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Carrying value as of the balance sheet date of obligations incurred and payable for the acquisition of merchandise, materials, supplies and services pertaining to construction projects such as a housing development or factory expansion not classified as trade payables. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Carrying amount as of the balance sheet date of the asset arising from derivative instruments and hedging activities, which are expected to be converted into cash or otherwise disposed of within a year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Sum as of the balance sheet date of the (a) fair values of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, and (b) the carrying amounts of the liabilities arising from financial instruments or contracts used to mitigate a specified risk (hedge), and which are expected to be extinguished or otherwise disposed of within a year or the normal operating cycle, if longer, net of the effects of master netting arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Fair value of liability arising from contracts that meet the criteria of being accounted for as derivative instruments, financial instrument or contract used to mitigate a specified risk (hedge), energy marketing activities (trading activities), expected to be settled after one year or beyond the normal operating cycle, if longer. Examples of energy marketing activities include, but are not limited to, trading of electricity, coal, natural gas and oil using financial instruments, including, but not limited to, forward contracts, options and swaps. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Carrying amount as of the balance sheet date of the assets arising from derivative contracts and hedging activities, which are expected to be converted into cash or otherwise disposed of after a year or beyond the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of the general partner's ownership interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Total of all Liabilities and Stockholders' Equity items (or Partners' Capital, as applicable), including the portion of equity attributable to noncontrolling interests, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of the limited partners' ownership interests. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Aggregate carrying amount, as of the balance sheet date, of current assets not separately disclosed in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of ownership interest of different classes of partners in limited partnership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Total of all Partners' Capital (deficit) items which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of partners' capital (deficit), including portions attributable to both the parent and noncontrolling interests. Excludes temporary equity and is sometimes called permanent equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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Consolidated Balance Sheets (Parenthetical) (USD $)
In Millions, except Share data, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
|---|---|---|
| Allowance for doubtful accounts | $ 0.3 | $ 0.3 |
| Common unitholders, units issued | 61,346,058 | 44,848,703 |
| Common unitholders, units outstanding | 61,346,058 | 44,848,703 |
| X | ||||||||||
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- Definition
A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The number of limited partner units issued. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The number of limited partner units outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Consolidated Statements of Operations (USD $)
In Millions, except Share data, unless otherwise specified |
12 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
|
||||||||||
| Operating revenues: | ||||||||||||
| Sales of natural gas, propane, NGLs and condensate | $ 1,465.9 | $ 2,178.5 | [1] | $ 1,975.1 | [2] | |||||||
| Transportation, processing and other | 185.0 | 172.2 | [1] | 130.3 | [2] | |||||||
| Gains (losses) from commodity derivative activity, net | 69.8 | 7.7 | [1] | 3.0 | [2] | |||||||
| Total operating revenues | 1,720.7 | 2,358.4 | [1] | 2,108.4 | [2] | |||||||
| Operating costs and expenses: | ||||||||||||
| Purchases of natural gas, propane and NGLs | 1,301.5 | 1,933.0 | [1] | 1,783.1 | [2] | |||||||
| Operating and maintenance expense | 123.2 | 125.7 | [1] | 98.3 | [2] | |||||||
| Depreciation and amortization expense | 63.4 | 100.6 | [1] | 88.1 | [2] | |||||||
| General and administrative expense | 45.8 | 48.3 | [1] | 45.8 | [2] | |||||||
| Step acquisition - equity interest re-measurement gain | (9.1) | [2] | ||||||||||
| Other income | (0.5) | (0.5) | (2.0) | |||||||||
| Other income - affiliates | (3.0) | |||||||||||
| Total operating costs and expenses | 1,533.4 | 2,207.1 | [1] | 2,001.2 | [2] | |||||||
| Operating income | 187.3 | 151.3 | [1] | 107.2 | [2] | |||||||
| Interest expense | (42.2) | (33.9) | [1] | (29.1) | [2] | |||||||
| Earnings from unconsolidated affiliates | 28.9 | 22.7 | [1] | 23.8 | [2] | |||||||
| Income before income taxes | 174.0 | 140.1 | [1] | 101.9 | [2] | |||||||
| Income tax expense | (1.0) | [3] | (0.5) | [1],[3] | (1.5) | [2],[3] | ||||||
| Net income | 173.0 | 139.6 | [1] | 100.4 | [2] | |||||||
| Net income attributable to noncontrolling interests | (5.0) | (18.8) | [1] | (9.2) | [2] | |||||||
| Net income attributable to partners | 168.0 | 120.8 | [1] | 91.2 | [2] | |||||||
| Net income attributable to predecessor operations | (2.6) | (20.4) | (43.2) | |||||||||
| General partner's interest in net income | (41.2) | (25.2) | (16.9) | |||||||||
| Net income allocable to limited partners | 124.2 | 75.2 | 31.1 | |||||||||
| Net income per limited partner unit - basic | 2.28 | 1.73 | 0.86 | |||||||||
| Net income per limited partner unit - diluted | 2.28 | 1.72 | 0.86 | |||||||||
| Weighted-average limited partner units outstanding - basic | 54.5 | 43.5 | 36.1 | |||||||||
| Weighted-average limited partner units outstanding - diluted | 54.5 | 43.6 | 36.1 | |||||||||
|
Third Party [Member]
|
||||||||||||
| Operating revenues: | ||||||||||||
| Sales of natural gas, propane, NGLs and condensate | 735.0 | 1,067.6 | 1,050.9 | |||||||||
| Transportation, processing and other | 147.1 | 138.8 | 108.1 | |||||||||
| Gains (losses) from commodity derivative activity, net | 17.2 | 6.8 | 5.3 | |||||||||
| Operating costs and expenses: | ||||||||||||
| Purchases of natural gas, propane and NGLs | 1,050.3 | 1,485.8 | 1,504.9 | |||||||||
| General and administrative expense | 16.2 | 18.9 | 14.3 | |||||||||
|
Affiliated Entity [Member]
|
||||||||||||
| Operating revenues: | ||||||||||||
| Sales of natural gas, propane, NGLs and condensate | 730.9 | 1,110.9 | 924.2 | |||||||||
| Transportation, processing and other | 37.9 | 33.4 | 22.2 | |||||||||
| Gains (losses) from commodity derivative activity, net | 52.6 | 0.9 | (2.3) | |||||||||
| Operating costs and expenses: | ||||||||||||
| Purchases of natural gas, propane and NGLs | 251.2 | 447.2 | 278.2 | |||||||||
| General and administrative expense | $ 29.6 | $ 29.4 | $ 31.5 | |||||||||
|
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| X | ||||||||||
|
- Definition
Gains (losses) from commodity derivative activity, net. No definition available.
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| X | ||||||||||
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- Definition
Natural gas, propane, NGLs and condensate purchases. No definition available.
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| X | ||||||||||
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- Definition
Sales of natural gas, propane, NGLs and condensate. No definition available.
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| X | ||||||||||
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- Definition
Amount of net (income) loss which is attributable to predecessor operations. No definition available.
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| X | ||||||||||
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- Definition
Other Income Affiliates No definition available.
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| X | ||||||||||
|
- Definition
In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Total costs of sales and operating expenses for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Definition
Revenue related to midstream and downstream gas activities. May include the following: gathering from wells, processing to remove impurities, storage, transmission, and the sale of natural gas and related products. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Definition
The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Definition
This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cost of borrowed funds accounted for as interest that was charged against earnings during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Midstream refers to those gas industry activities that fall between exploration and production (upstream) and refining and marketing (downstream). It may be applied to the gathering, processing, transmission and storage of natural gas; including the treating of natural gas to remove impurities, along with the sale of by-products such as residue gas, natural gas liquids and condensate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate amount of net income allocated to general partners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate amount of net income allocated to limited partners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Net income (loss) allocated to each outstanding limited partnership unit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Net Income or Loss allocated to each limited partner unit outstanding during the reporting period and each unit that would have been outstanding assuming the issuance of limited partner units for all dilutive potential units outstanding during the reporting period. Limited partners have limited liability and do not manage the partnership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The net result for the period of deducting operating expenses from operating revenues. No definition available.
|
| X | ||||||||||
|
- Definition
The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The total amount of other operating income, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Weighted average number of limited partnership units outstanding determined by relating the portion of time within a reporting period that general partnership units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Weighted average number of limited partnership units outstanding determined by relating the portion of time within a reporting period that limited partnership units have been outstanding to the total time in that period. Used in the calculation of diluted net income or loss per limited partnership unit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Consolidated Statements of Comprehensive Income (Loss) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|||||||
| Net income | $ 173.0 | $ 139.6 | [1] | $ 100.4 | [2] | ||||
| Other comprehensive income (loss): | |||||||||
| Reclassification of cash flow hedge losses into earnings | 10.6 | 20.7 | [1] | 22.9 | [2] | ||||
| Net unrealized gains (losses) on cash flow hedges | 0.1 | (13.3) | [1] | (18.7) | [2] | ||||
| Total other comprehensive income | 10.1 | 5.6 | [1] | 4.2 | [2] | ||||
| Total comprehensive income | 183.1 | 145.2 | [1] | 104.6 | [2] | ||||
| Total comprehensive income attributable to noncontrolling interests | (5.0) | (18.8) | [1] | (9.2) | [2] | ||||
| Total comprehensive income attributable to partners | 178.1 | 126.4 | [1] | 95.4 | [2] | ||||
|
Successor [Member]
|
|||||||||
| Other comprehensive income (loss): | |||||||||
| Net unrealized gains (losses) on cash flow hedges | 0.1 | (13.3) | (18.7) | ||||||
|
Predecessor Equity [Member]
|
|||||||||
| Net income | 2.6 | 20.4 | 43.2 | ||||||
| Other comprehensive income (loss): | |||||||||
| Net unrealized gains (losses) on cash flow hedges | (0.6) | (1.8) | |||||||
| Total other comprehensive income | $ (0.6) | $ (1.8) | |||||||
|
|||||||||
| X | ||||||||||
|
- Definition
The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Net of tax amount of other comprehensive income (loss) attributable to both parent entity and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Net of tax amount of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income. Also includes reclassification adjustments of an entity's share of an equity investee's deferred hedging gain (loss) realized in net income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Net of tax amount, before reclassification adjustments, of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Consolidated Statements of Changes In Equity (USD $)
In Millions |
Total
|
Southeast Texas [Member]
|
East Texas System [Member]
|
Mont Belvieu Fractionators [Member]
|
Eagle Ford System [Member]
|
Eagle Ford System and NGL Hedge [Member]
|
Goliad and NGL Hedge [Member]
|
Black Lake [Member]
|
Predecessor Equity [Member]
|
Common Unitholders [Member]
|
Common Unitholders [Member]
Southeast Texas [Member]
|
Common Unitholders [Member]
East Texas System [Member]
|
Common Unitholders [Member]
Mont Belvieu Fractionators [Member]
|
Common Unitholders [Member]
Eagle Ford System [Member]
|
Common Unitholders [Member]
Eagle Ford System and NGL Hedge [Member]
|
Common Unitholders [Member]
Goliad and NGL Hedge [Member]
|
Common Unitholders [Member]
Black Lake [Member]
|
General Partner [Member]
|
Accumulated Other Comprehensive (Loss) Income [Member]
|
Noncontrolling Interests [Member]
|
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Balance at Dec. 31, 2009 | $ 817.7 | $ 212.3 | $ 415.5 | $ (5.9) | $ (31.9) | $ 227.7 | ||||||||||||||||||||||||
| Net income | 100.4 | [1] | 43.2 | [2] | 43.2 | 32.2 | 15.8 | 9.2 | ||||||||||||||||||||||
| Other comprehensive income (loss) | 4.2 | [1] | 4.2 | |||||||||||||||||||||||||||
| Net change in advances to predecessor from DCP Midstream, LLC | 82.3 | 82.3 | ||||||||||||||||||||||||||||
| Purchase of additional interest in a subsidiary | (4.5) | 1.0 | (5.5) | |||||||||||||||||||||||||||
| Excess purchase price over acquired assets | (0.8) | (0.8) | ||||||||||||||||||||||||||||
| Issuance of 5,870,200, 4,357,921 and 11,285,956, common units for December, 2010, 2011 and 2012 respectively | 189.1 | 189.1 | ||||||||||||||||||||||||||||
| Equity based compensation | 0.2 | 0.2 | ||||||||||||||||||||||||||||
| Distributions to common unitholders and general partner | (101.9) | [1] | (85.6) | (16.3) | ||||||||||||||||||||||||||
| Distributions to noncontrolling interests | (25.6) | [1] | (25.6) | |||||||||||||||||||||||||||
| Contributions from DCP Midstream, LLC | 0.6 | 0.6 | ||||||||||||||||||||||||||||
| Contributions from noncontrolling interests | 14.3 | [1] | 14.3 | |||||||||||||||||||||||||||
| Balance at Dec. 31, 2010 | 1,076.0 | 337.8 | 552.2 | (6.4) | (27.7) | 220.1 | ||||||||||||||||||||||||
| Net income | 139.6 | [3] | 34.6 | [2] | 20.4 | 75.2 | 25.2 | 18.8 | ||||||||||||||||||||||
| Other comprehensive income (loss) | 5.6 | [3] | (1.8) | 7.4 | ||||||||||||||||||||||||||
| Net change in advances to predecessor from DCP Midstream, LLC | 15.3 | 15.3 | ||||||||||||||||||||||||||||
| Acquisition of Southeast Texas | (114.3) | (114.3) | ||||||||||||||||||||||||||||
| Excess purchase price over acquired assets | (35.7) | (34.8) | (0.9) | |||||||||||||||||||||||||||
| Issuance of 5,870,200, 4,357,921 and 11,285,956, common units for December, 2010, 2011 and 2012 respectively | 169.9 | 169.9 | ||||||||||||||||||||||||||||
| Equity based compensation | 3.4 | 3.4 | ||||||||||||||||||||||||||||
| Distributions to DCP Midstream, LLC | (2.6) | (2.6) | ||||||||||||||||||||||||||||
| Distributions to common unitholders and general partner | (132.4) | [4] | (108.9) | (23.5) | ||||||||||||||||||||||||||
| Distributions to noncontrolling interests | (44.8) | [4] | (44.8) | |||||||||||||||||||||||||||
| Contributions from noncontrolling interests | 18.3 | [4] | 18.3 | |||||||||||||||||||||||||||
| Balance at Dec. 31, 2011 | 1,098.3 | [3] | 359.0 | [2] | 257.4 | 654.4 | (4.7) | (21.2) | 212.4 | |||||||||||||||||||||
| Net income | 173.0 | 2.6 | 124.2 | 41.2 | 5.0 | |||||||||||||||||||||||||
| Other comprehensive income (loss) | 10.1 | (0.6) | 10.7 | |||||||||||||||||||||||||||
| Net change in advances to predecessor from DCP Midstream, LLC | (11.5) | (11.5) | ||||||||||||||||||||||||||||
| Acquisition of additional 66.67% interest in Southeast Texas and NGL Hedge | (208.4) | (247.9) | 39.5 | |||||||||||||||||||||||||||
| Acquisition of additional 49.9% interest in East Texas | (175.8) | (175.8) | ||||||||||||||||||||||||||||
| Issuance of units | 48.0 | 33.0 | 60.0 | 87.7 | 48.0 | 33.0 | 60.0 | 87.7 | ||||||||||||||||||||||
| Deficit purchase price under carrying value of acquired net assets for Southeast Texas and East Texas | 31.6 | 35.8 | (4.2) | |||||||||||||||||||||||||||
| Excess purchase price over carrying value of acquired net assets/investment | (174.8) | (156.4) | (9.3) | (174.8) | (156.4) | (9.3) | ||||||||||||||||||||||||
| Issuance of 5,870,200, 4,357,921 and 11,285,956, common units for December, 2010, 2011 and 2012 respectively | 455.0 | 455.0 | ||||||||||||||||||||||||||||
| Equity based compensation | (0.4) | (0.4) | ||||||||||||||||||||||||||||
| Distributions to common unitholders and general partner | (181.3) | (144.5) | (36.8) | |||||||||||||||||||||||||||
| Distributions to noncontrolling interests | (6.2) | (6.2) | ||||||||||||||||||||||||||||
| Contributions from DCP Midstream, LLC | 10.6 | 10.6 | ||||||||||||||||||||||||||||
| Contributions from noncontrolling interests | 10.3 | |||||||||||||||||||||||||||||
| Balance at Dec. 31, 2012 | $ 1,083.2 | $ 1,062.8 | $ (0.3) | $ (14.7) | $ 35.4 | |||||||||||||||||||||||||
|
||||||||||||||||||||||||||||||
| X | ||||||||||
|
- Definition
In a transfer between entities under common control, the amount of the purchase price in deficit of the seller's basis in the net assets acquired. No definition available.
|
| X | ||||||||||
|
- Definition
In a transfer between entities under common control, the amount of the purchase price in excess of the seller's basis in the net assets acquired. No definition available.
|
| X | ||||||||||
|
- Definition
Excess purchase price over acquired assets No definition available.
|
| X | ||||||||||
|
- Definition
Change in the different classes of partners' capital accounts during the year due to the acquisition of additional interests in a subsidiary. No definition available.
|
| X | ||||||||||
|
- Definition
Change in the different classes of partners' capital accounts during the year due to the acquisition of additional interests in unconsolidated affiliates. No definition available.
|
| X | ||||||||||
|
- Definition
Change in the different classes of partners' capital accounts due to the issuance of units during acquisitions. No definition available.
|
| X | ||||||||||
|
- Definition
Distribution to the entity's parent during the period. No definition available.
|
| X | ||||||||||
|
- Definition
Change in the partners' capital accounts during the year due to the net change in parent advances to the predecessor. No definition available.
|
| X | ||||||||||
|
- Definition
Purchase of additional interest in a subsidiary cash and noncash No definition available.
|
| X | ||||||||||
|
- Definition
Net of tax amount of other comprehensive income (loss) attributable to both parent entity and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total contributions made by each class of partners (i.e., general, limited and preferred partners). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total distributions to each class of partners (i.e., general, limited and preferred partners). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total change in each class of partners' capital accounts during the year due to the sale of units. All partners include general, limited and preferred partners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total change in each class of partners' capital accounts during the year due to unit-based compensation. All partners include general, limited and preferred partners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of partners' capital (deficit), including portions attributable to both the parent and noncontrolling interests. Excludes temporary equity and is sometimes called permanent equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Cash outflow in the form of ordinary dividends to noncontrolling interests, generally out of earnings. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash inflow contributed by noncontrolled interest that purchase additional shares or otherwise increase their ownership stake in a subsidiary of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Consolidated Statements of Changes In Equity (Parenthetical)
|
12 Months Ended | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2012
Common Unitholders [Member]
|
Dec. 31, 2011
Common Unitholders [Member]
|
Dec. 31, 2010
Common Unitholders [Member]
|
Dec. 31, 2012
Southeast Texas [Member]
Predecessor Equity [Member]
|
Dec. 31, 2012
Southeast Texas [Member]
Common Unitholders [Member]
|
Dec. 31, 2012
East Texas [Member]
|
Dec. 31, 2012
East Texas [Member]
Noncontrolling Interests [Member]
|
Dec. 31, 2012
Eagle Ford System [Member]
|
Dec. 31, 2012
Eagle Ford System [Member]
Common Unitholders [Member]
|
Dec. 31, 2010
Black Lake [Member]
Common Unitholders [Member]
|
|
| Ownership interest acquired | 66.67% | 66.67% | 49.90% | 49.90% | 33.33% | 33.30% | 5.00% | ||||||
| Issuance of common units | 11,285,956 | 4,357,921 | 5,870,200 | 11,285,956 | 4,357,921 | 5,870,200 | |||||||
| X | ||||||||||
|
- Definition
Percentage of voting equity interests acquired in the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total units issued during the year due to the sale of units. All partners include general, limited and preferred partners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Consolidated Statements of Cash Flows (USD $)
|
12 Months Ended | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
||||||||||||
| OPERATING ACTIVITIES: | ||||||||||||||
| Net income | $ 173,000,000 | $ 139,600,000 | [1] | $ 100,400,000 | [2] | |||||||||
| Adjustments to reconcile net income to net cash provided by operating activities: | ||||||||||||||
| Depreciation and amortization expense | 63,400,000 | 100,600,000 | [1] | 88,100,000 | [2] | |||||||||
| Earnings from unconsolidated affiliates | (28,900,000) | (22,700,000) | [1] | (23,800,000) | [2] | |||||||||
| Distributions from unconsolidated affiliates | 29,300,000 | 25,300,000 | 30,000,000 | |||||||||||
| Step acquisition - equity interest re-measurement gain | (9,100,000) | [2] | ||||||||||||
| Net unrealized (gains) losses on derivative instruments | (21,300,000) | [3] | (39,900,000) | [3] | 8,400,000 | [3] | ||||||||
| Deferred income taxes, net | (29,200,000) | (100,000) | ||||||||||||
| Other, net | 2,800,000 | 4,200,000 | (800,000) | |||||||||||
| Change in operating assets and liabilities which (used) provided cash, net of effects of acquisitions: | ||||||||||||||
| Accounts receivable | 29,900,000 | 31,500,000 | (48,200,000) | |||||||||||
| Inventories | 13,300,000 | (14,300,000) | 1,300,000 | |||||||||||
| Accounts payable | (133,300,000) | 63,500,000 | 9,900,000 | |||||||||||
| Accrued interest | 5,400,000 | 1,800,000 | ||||||||||||
| Other current assets and liabilities | (6,600,000) | 5,600,000 | 3,000,000 | |||||||||||
| Other long-term assets and liabilities | (2,100,000) | (3,400,000) | 1,500,000 | |||||||||||
| Net cash provided by operating activities | 124,900,000 | 260,800,000 | [4] | 162,400,000 | [2] | |||||||||
| INVESTING ACTIVITIES: | ||||||||||||||
| Capital expenditures | (200,400,000) | (165,700,000) | [4] | (75,900,000) | [2] | |||||||||
| Acquisitions, net of cash acquired | (375,400,000) | (60,500,000) | (282,100,000) | |||||||||||
| Acquisition of unconsolidated affiliates and NGL Hedges | (114,300,000) | |||||||||||||
| Investments in unconsolidated affiliates | (184,000,000) | (7,000,000) | [4] | (2,300,000) | [2] | |||||||||
| Return of investment from unconsolidated affiliates | 1,000,000 | 1,600,000 | [4] | 1,200,000 | [2] | |||||||||
| Proceeds from sales of assets | 300,000 | 5,200,000 | [4] | 3,500,000 | [2] | |||||||||
| Proceeds from sales of available-for-sale securities | 10,100,000 | [2] | ||||||||||||
| Net cash used in investing activities | (1,070,500,000) | (340,700,000) | [4] | (345,500,000) | [2] | |||||||||
| FINANCING ACTIVITIES: | ||||||||||||||
| Proceeds from debt | 2,664,800,000 | 1,524,000,000 | [4] | 868,200,000 | [2] | |||||||||
| Payments of debt | (1,791,500,000) | (1,425,000,000) | [4] | (833,400,000) | [2] | |||||||||
| Payment of deferred financing costs | (7,700,000) | (4,200,000) | [4] | (2,100,000) | [2] | |||||||||
| Proceeds from issuance of common units, net of offering costs | 455,200,000 | 169,700,000 | [4] | 189,300,000 | [2] | |||||||||
| Excess purchase price over acquired unconsolidated affiliates and NGL Hedges | (35,700,000) | |||||||||||||
| Net change in advances to predecessor from DCP Midstream, LLC | (11,500,000) | 10,900,000 | [4] | 82,300,000 | [2] | |||||||||
| Distributions to common unitholders and general partner | (181,300,000) | (132,400,000) | [4] | (101,900,000) | [2] | |||||||||
| Distributions to noncontrolling interests | (6,200,000) | (44,800,000) | [4] | (25,600,000) | [2] | |||||||||
| Contributions from noncontrolling interests | 10,300,000 | 18,300,000 | [4] | 14,300,000 | [2] | |||||||||
| Purchase of additional interest in a subsidiary | (3,500,000) | [2] | ||||||||||||
| Net cash provided by financing activities | 939,300,000 | 80,800,000 | [4] | 187,700,000 | [2] | |||||||||
| Net change in cash and cash equivalents | (6,300,000) | 900,000 | [4] | 4,600,000 | [2] | |||||||||
| Cash and cash equivalents, beginning of year | 7,600,000 | [1],[4] | 6,700,000 | [2],[4] | 2,100,000 | [2] | ||||||||
| Cash and cash equivalents, end of year | 1,300,000 | 7,600,000 | [1],[4] | 6,700,000 | [2],[4] | |||||||||
|
Cash Portion [Member]
|
||||||||||||||
| FINANCING ACTIVITIES: | ||||||||||||||
| Contributions from DCP Midstream, LLC | 10,300,000 | 18,300,000 | 600,000 | [2] | ||||||||||
|
Unconsolidated Affiliates and NGL Hedges [Member]
|
||||||||||||||
| INVESTING ACTIVITIES: | ||||||||||||||
| Acquisition of unconsolidated affiliates and NGL Hedges | (312,000,000) | (114,300,000) | ||||||||||||
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Unconsolidated Affiliates and NGL Hedges [Member] | Cash Portion [Member]
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| FINANCING ACTIVITIES: | ||||||||||||||
| Excess purchase price over acquired unconsolidated affiliates and NGL Hedges | $ (192,800,000) | $ (35,700,000) | ||||||||||||
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| X | ||||||||||
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- Definition
Advances To Equity Method Investments No definition available.
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| X | ||||||||||
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- Definition
In a transfer between entities under common control, the amount of the purchase price in excess of the seller's basis in the net assets acquired. No definition available.
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| X | ||||||||||
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- Definition
Net Change In Advances To Predecessor No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The component of income tax expense for the period representing the increase (decrease) in the entity's deferred tax assets and liabilities pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Change in recurring obligations of a business that arise from the acquisition of merchandise, materials, supplies and services used in the production and sale of goods and services. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in interest payable, which represents the amount owed to note holders, bond holders, and other parties for interest earned on loans or credit extended to the reporting entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in other current operating assets less other current operating liabilities not separately disclosed in the statement of cash flows. No definition available.
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in other noncurrent operating assets less other noncurrent operating liabilities not separately disclosed in the statement of cash flows. No definition available.
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| X | ||||||||||
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- Definition
The net cash inflow or outflow from financing activity for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The net cash inflow or outflow from investing activity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Other income (expense) included in net income that results in no cash inflows or outflows in the period. Includes noncash adjustments to reconcile net income (loss) to cash provided by (used in) operating activities that are not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Total distributions to each class of partners (i.e., general, limited and preferred partners). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Cash outflow in the form of ordinary dividends to noncontrolling interests, generally out of earnings. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash outflow for loan and debt issuance costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash outflow associated with the purchase of noncontrolling interest during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash inflow from parent as a source of financing that is recorded as additional paid in capital. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Cash dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations that are returns of capital. Excludes dividends or distributions from equity method investments classified as operating activities. No definition available.
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| X | ||||||||||
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- Definition
The cash inflow from the issuance of common limited partners units during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash inflow contributed by noncontrolled interest that purchase additional shares or otherwise increase their ownership stake in a subsidiary of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of open derivatives, commodity, or energy contracts, held at each balance sheet date, that was included in earnings for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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|
Description of Business and Basis of Presentation
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12 Months Ended | ||
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Dec. 31, 2012
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| Description of Business and Basis of Presentation |
DCP Midstream Partners, LP, with its consolidated subsidiaries, or us, we or our, is engaged in the business of gathering, compressing, treating, processing, transporting, storing and selling natural gas; producing, fractionating, transporting, storing and selling NGLs and condensate; and transporting, storing and selling propane in wholesale markets. We are a Delaware limited partnership that was formed in August 2005. We completed our initial public offering on December 7, 2005. Our partnership includes: our natural gas services segment (which includes our Northern Louisiana system; our Southern Oklahoma system; our 40% interest in Discovery Producer Services LLC, or Discovery; our Wyoming system; a 75% interest in Collbran Valley Gas Gathering, LLC, or Collbran or our Colorado system; our East Texas system (of which the remaining 49.9% was acquired in January 2012, and also includes the Crossroads system acquired in July 2012); our Michigan system; our Southeast Texas system (of which 33.33% and 66.67% were acquired in January 2011 and March 2012, respectively); our 33.33% interest in the Eagle Ford system (acquired in November 2012) and our wholly owned Eagle Plant, our NGL logistics segment (which includes the Seabreeze and Wilbreeze intrastate NGL pipelines, the Wattenberg and Black Lake interstate NGL pipelines, our 10% interest in the Texas Express intrastate NGL pipeline, the NGL storage facility in Michigan, the DJ Basin NGL fractionators and our minority ownership interests in the Mont Belvieu fractionators acquired in July 2012), and our wholesale propane logistics segment. Our operations and activities are managed by our general partner, DCP Midstream GP, LP, which in turn is managed by its general partner, DCP Midstream GP, LLC, which we refer to as the General Partner, and is wholly-owned by DCP Midstream, LLC. DCP Midstream, LLC and its subsidiaries and affiliates, collectively referred to as DCP Midstream, LLC, is owned 50% by Spectra Energy Corp, or Spectra Energy, and 50% by Phillips 66. DCP Midstream, LLC directs our business operations through its ownership and control of the General Partner. DCP Midstream, LLC and its affiliates’ employees provide administrative support to us and operate most of our assets. DCP Midstream, LLC owns approximately 28% of us. The consolidated financial statements include the accounts of the Partnership and all majority-owned subsidiaries where we have the ability to exercise control. Investments in greater than 20% owned affiliates that are not variable interest entities and where we do not have the ability to exercise control, and investments in less than 20% owned affiliates where we have the ability to exercise significant influence, are accounted for using the equity method. All intercompany balances and transactions have been eliminated. Our predecessor operations consist of our initial 33.33% interest in Southeast Texas, which we acquired from DCP Midstream, LLC in January 2011, and the remaining 66.67% interest in Southeast Texas and commodity derivative hedge instruments related to the Southeast Texas storage business, which we acquired from DCP Midstream, LLC in March 2012. Prior to our acquisition of the remaining 66.67% interest in Southeast Texas, we accounted for our initial 33.33% interest as an unconsolidated affiliate using the equity method. Subsequent to this transaction, we own 100% of Southeast Texas which we account for as a consolidated subsidiary. These transfers of net assets between entities under common control were accounted for as if the transfer occurred at the beginning of the period, and prior years were retrospectively adjusted to furnish comparative information similar to the pooling method. Accordingly, our consolidated financial statements include the historical results of our 100% interest in Southeast Texas and the natural gas commodity derivatives associated with the storage business for all periods presented. We recognize transfers of net assets between entities under common control at DCP Midstream, LLC’s basis in the net assets contributed. The amount of the purchase price in excess or in deficit of DCP Midstream, LLC’s basis in the net assets is recognized as a reduction or an addition to partners’ equity. The financial statements of our predecessor have been prepared from the separate records maintained by DCP Midstream, LLC and may not necessarily be indicative of the conditions that would have existed or the results of operations if our predecessor had been operated as an unaffiliated entity. In addition, the results of operations for acquisitions accounted for as business combinations have been included in the consolidated financial statements since their respective acquisition dates. |
| X | ||||||||||
|
- Definition
The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Summary of Significant Accounting Policies
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12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2012
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| Summary of Significant Accounting Policies |
Use of Estimates — Conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and notes. Although these estimates are based on management’s best available knowledge of current and expected future events, actual results could differ from those estimates. Cash and Cash Equivalents — We consider investments in highly liquid financial instruments purchased with an original stated maturity of 90 days or less to be cash equivalents. Inventories — Inventories, which consist primarily of NGLs and natural gas, are recorded at the lower of weighted-average cost or market value. Transportation costs are included in inventory. Property, Plant and Equipment — Property, plant and equipment are recorded at historical cost. The cost of maintenance and repairs, which are not significant improvements, are expensed when incurred. Depreciation is computed using the straight-line method over the estimated useful lives of the assets. Goodwill and Intangible Assets — Goodwill is the cost of an acquisition less the fair value of the net assets of the acquired business. We perform an annual impairment test of goodwill in the third quarter, and update the test during interim periods when we believe events or changes in circumstances indicate that we may not be able to recover the carrying value of a reporting unit. We primarily use a discounted cash flow analysis to perform the assessment. Key assumptions in the analysis include the use of an appropriate discount rate, terminal year multiples, and estimated future cash flows including an estimate of operating and general and administrative costs. In estimating cash flows, we incorporate current market information, as well as historical and other factors, into our forecasted commodity prices. For certain reporting units, we may elect to first assess qualitative factors to determine whether it is more likely than not that the fair value of our reporting units is less than the carrying value. Intangible assets consist primarily of customer contracts, including commodity purchase, transportation and processing contracts and related relationships. These intangible assets are amortized on a straight-line basis over the period of expected future benefit. Intangible assets are removed from the gross carrying amount and the total of accumulated amortization in the period in which they become fully amortized. Long-Lived Assets — We periodically evaluate whether the carrying value of long-lived assets has been impaired when circumstances indicate the carrying value of those assets may not be recoverable. This evaluation is based on undiscounted cash flow projections. The carrying amount is not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset. We consider various factors when determining if these assets should be evaluated for impairment, including but not limited to:
If the carrying value is not recoverable, the impairment loss is measured as the excess of the asset’s carrying value over its fair value. We assess the fair value of long-lived assets using commonly accepted techniques, and may use more than one method, including, but not limited to, recent third party comparable sales and discounted cash flow models. Significant changes in market conditions resulting from events such as the condition of an asset or a change in management’s intent to utilize the asset would generally require management to reassess the cash flows related to the long-lived assets. Asset Retirement Obligations — Our asset retirement obligations relate primarily to the retirement of various gathering pipelines and processing facilities, obligations related to right-of-way easement agreements, and contractual leases for land use. We adjust our asset retirement obligation each quarter for any liabilities incurred or settled during the period, accretion expense and any revisions made to the estimated cash flows. Asset retirement obligations associated with tangible long-lived assets are recorded at fair value in the period in which they are incurred, if a reasonable estimate of fair value can be made, and added to the carrying amount of the associated asset. This additional carrying amount is then depreciated over the life of the asset. The liability is determined using a risk free interest rate, and increases due to the passage of time based on the time value of money until the obligation is settled. Investments in Unconsolidated Affiliates — We use the equity method to account for investments in greater than 20% owned affiliates that are not variable interest entities and where we do not have the ability to exercise control, and investments in less than 20% owned affiliates where we have the ability to exercise significant influence. We evaluate our investments in unconsolidated affiliates for impairment whenever events or changes in circumstances indicate that the carrying value of such investments may have experienced a decline in value. When there is evidence of loss in value, we compare the estimated fair value of the investment to the carrying value of the investment to determine whether impairment has occurred. We assess the fair value of our investments in unconsolidated affiliates using commonly accepted techniques, and may use more than one method, including, but not limited to, recent third party comparable sales and discounted cash flow models. If the estimated fair value is considered to be permanently less than the carrying value, the excess of the carrying value over the estimated fair value is recognized as an impairment loss. Unamortized Debt Expense — Expenses incurred with the issuance of long-term debt are amortized over the term of the debt using the effective interest method. These expenses are recorded on the consolidated balance sheet as other long-term assets. Noncontrolling Interest — Noncontrolling interest represents any third party or affiliate interest in non-wholly-owned entities that we consolidate. For financial reporting purposes, the assets and liabilities of these entities are consolidated with those of our own, with any third party or affiliate interest in our consolidated balance sheet amounts shown as noncontrolling interest in equity. Distributions to and contributions from noncontrolling interests represent cash payments to and cash contributions from, respectively, such third party and affiliate investors.
Accounting for Risk Management Activities and Financial Instruments — Non-trading energy commodity derivatives are designated as either a hedge of a forecasted transaction or future cash flow (cash flow hedge), a hedge of a recognized asset, liability or firm commitment (fair value hedge), or normal purchases or normal sales. The remaining non-trading derivatives, which are related to asset-based activities for which the normal purchase or normal sale exception is not elected, are recorded at fair value in the consolidated balance sheets as unrealized gains or unrealized losses in derivative instruments, with changes in the fair value recognized in the consolidated statements of operations. For each derivative, the accounting method and presentation of gains and losses or revenue and expense in the consolidated statements of operations are as follows:
Cash Flow and Fair Value Hedges — For derivatives designated as a cash flow hedge or a fair value hedge, we maintain formal documentation of the hedge. In addition, we formally assess both at the inception of the hedging relationship and on an ongoing basis, whether the hedge contract is highly effective in offsetting changes in cash flows or fair values of hedged items. All components of each derivative gain or loss are included in the assessment of hedge effectiveness, unless otherwise noted. The fair value of a derivative designated as a cash flow hedge is recorded in the consolidated balance sheets as unrealized gains or unrealized losses on derivative instruments. The effective portion of the change in fair value of a derivative designated as a cash flow hedge is recorded in partners’ equity in accumulated other comprehensive income, or AOCI, and the ineffective portion is recorded in the consolidated statements of operations. During the period in which the hedged transaction impacts earnings, amounts in AOCI associated with the hedged transaction are reclassified to the consolidated statements of operations in the same accounts as the item being hedged. Hedge accounting is discontinued prospectively when it is determined that the derivative no longer qualifies as an effective hedge, or when it is probable that the hedged transaction will not occur. When hedge accounting is discontinued because the derivative no longer qualifies as an effective hedge, the derivative is subject to the mark-to-market accounting method prospectively. The derivative continues to be carried on the consolidated balance sheets at its fair value; however, subsequent changes in its fair value are recognized in current period earnings. Gains and losses related to discontinued hedges that were previously accumulated in AOCI will remain in AOCI until the hedged transaction impacts earnings, unless it is probable that the hedged transaction will not occur, in which case, the gains and losses that were previously deferred in AOCI will be immediately recognized in current period earnings. The fair value of a derivative designated as a fair value hedge is recorded for balance sheet purposes as unrealized gains or unrealized losses on derivative instruments. We recognize the gain or loss on the derivative instrument, as well as the offsetting loss or gain on the hedged item in earnings in the current period. All derivatives designated and accounted for as fair value hedges are classified in the same category as the item being hedged in the results of operations. Valuation — When available, quoted market prices or prices obtained through external sources are used to determine a contract’s fair value. For contracts with a delivery location or duration for which quoted market prices are not available, fair value is determined based on pricing models developed primarily from historical relationships with quoted market prices and the expected relationship with quoted market prices. Values are adjusted to reflect the credit risk inherent in the transaction as well as the potential impact of liquidating open positions in an orderly manner over a reasonable time period under current conditions. Changes in market prices and management estimates directly affect the estimated fair value of these contracts. Accordingly, it is reasonably possible that such estimates may change in the near term. Revenue Recognition — We generate the majority of our revenues from gathering, compressing, treating, processing, transporting, storing and selling of natural gas, and producing, fractionating, transporting, storing and selling NGLs. Once natural gas is produced from wells, producers then seek to deliver the natural gas and its components to end-use markets. We realize revenues either by selling the residue natural gas and NGLs, or by receiving fees. We obtain access to commodities and provide our midstream services principally under contracts that contain a combination of one or more of the following arrangements:
Our marketing of natural gas and NGLs consists of physical purchases and sales, as well as positions in derivative instruments. We recognize revenues for sales and services under the four revenue recognition criteria, as follows:
We generally report revenues gross in the consolidated statements of operations, as we typically act as the principal in these transactions, take custody to the product, and incur the risks and rewards of ownership. We recognize revenues for non-trading commodity derivative activity net in the consolidated statements of operations as gains and losses from commodity derivative activity. These activities include mark-to-market gains and losses on energy trading contracts and the settlement of financial or physical energy trading contracts. Quantities of natural gas or NGLs over-delivered or under-delivered related to imbalance agreements with customers, producers or pipelines are recorded monthly as accounts receivable or accounts payable using current market prices or the weighted-average prices of natural gas or NGLs at the plant or system. These balances are settled with deliveries of natural gas or NGLs, or with cash. Significant Customers — There were no third party customers that accounted for more than 10% of total operating revenues for the years ended December 31, 2012, 2011 and 2010. There was one third party customer that accounted for approximately 20% of revenues of the Wholesale Propane Logistics segment for the year ended December 31, 2012, and approximately 17% of total operating revenues for the years ended December 31, 2011 and 2010, respectively. We also had significant transactions with affiliates.
Environmental Expenditures — Environmental expenditures are expensed or capitalized as appropriate, depending upon the future economic benefit. Expenditures that relate to an existing condition caused by past operations and that do not generate current or future revenue are expensed. Liabilities for these expenditures are recorded on an undiscounted basis when environmental assessments and/or clean-ups are probable and the costs can be reasonably estimated. Environmental liabilities as of December 31, 2012 and 2011, included in the consolidated balance sheets as other current liabilities amounted to $0.8 million and $0.8 million, respectively, and as other long-term liabilities amounted to $1.0 million and $1.2 million, respectively. Equity-Based Compensation — Equity classified stock-based compensation cost is measured at fair value, based on the closing common unit price at grant date, and is recognized as expense over the vesting period. Liability classified stock-based compensation cost is remeasured at each reporting date at fair value, based on the closing common unit price, and is recognized as expense over the requisite service period. Compensation expense for awards with graded vesting provisions is recognized on a straight-line basis over the requisite service period of each separately vesting portion of the award. Awards granted to non-employees for acquiring, or in conjunction with selling, goods and services are measured at the estimated fair value of the goods or services, or the fair value of the award, whichever is more reliably measured. Allowance for Doubtful Accounts — Management estimates the amount of required allowances for the potential non-collectability of accounts receivable generally based upon the number of days past due, past collection experience and consideration of other relevant factors. However, past experience may not be indicative of future collections and therefore additional charges could be incurred in the future to reflect differences between estimated and actual collections. Income Taxes — We are structured as a master limited partnership which is a pass-through entity for federal income tax purposes. Our income tax expense includes certain jurisdictions, including state, local, franchise and margin taxes of the master limited partnership and subsidiaries. We follow the asset and liability method of accounting for income taxes. Under this method, deferred income taxes are recognized for the tax consequences of temporary differences between the financial statement carrying amounts and the tax basis of the assets and liabilities. Our taxable income or loss, which may vary substantially from the net income or loss reported in the consolidated statements of operations, is proportionately included in the federal returns of each partner. Net Income or Loss per Limited Partner Unit — Basic and diluted net income or loss per limited partner unit, or LPU, is calculated by dividing net income or loss allocable to limited partners, by the weighted-average number of outstanding LPUs during the period. Diluted net income or loss per limited partner unit is computed based on the weighted average number of units plus the effect of dilutive potential units outstanding during the period using the two-class method. Capitalized Interest — We capitalize interest during construction on major projects. Interest is calculated on the monthly outstanding capital balance and ceases in the month that the asset is placed into service. We also capitalize interest on our equity method investments which are devoting substantially all efforts to establishing a new business and have not yet begun planned principal operations. Capitalization ceases when the investee commences planned principal operations. The rates used to calculate capitalized interest are the weighted-average cost of debt, including the impact of interest rate swaps. |
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| X | ||||||||||
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- Definition
The entire disclosure for all significant accounting policies of the reporting entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Acquisitions
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| Acquisitions |
On November 2, 2012, we acquired a 33.33% interest in DCP SC Texas GP, or the Eagle Ford system, from DCP Midstream, LLC and a $43.2 million fixed price commodity derivative hedge (also referred to as the NGL Hedge) for a three-year period for aggregate consideration of $438.3 million, less customary working capital and other purchase price adjustments of $7.1 million. $343.5 million of the consideration was financed with a 2-year Term Loan Agreement and $87.7 million was financed by the issuance at closing of an aggregate 1,912,663 of our common units to DCP Midstream, LLC. The $156.4 million excess purchase price over the carrying value of the acquired investment was recorded as a decrease in common unitholders’ equity. The Eagle Ford system acquisition represents a transaction between entities under common control, but does not represent a change in reporting entity. Accordingly, we have included the results of our 33.33% interest in the Eagle Ford system prospectively from the date of acquisition. Our interest in the Eagle Ford system is accounted for as an unconsolidated affiliate using the equity method and is included in our Natural Gas Services segment. On December 5, 2012, DCP SC Texas GP announced the construction of the Goliad Plant, a cryogenic plant that will serve the Eagle Ford shale. The Goliad plant will have gas processing capacity of 200 MMcf/d and will be part of the Eagle Ford system. The Goliad plant will be constructed and funded by the Eagle Ford system. We contributed $19.1 million to the Eagle Ford system for our 33.33% interest in the project, which included working capital and construction work in process, plus an incremental payment of $16.7 million. DCP Midstream, LLC also provided a $7.3 million two-year direct commodity price hedge (also referred to as the NGL Hedge) for our 33.33% interest in the project. The excess purchase price over the carrying value of the acquired net assets by the Eagle Ford system of $9.3 million was recorded as a decrease in common unitholders’ equity. Our total investment will be approximately $97.0 million, which includes the new Goliad Plant, a gathering system feeding the plant and ancillary support facilities including compression, liquids handling and residue pipeline interconnect facilities. The Goliad plant is expected to be completed in the first quarter of 2014. On July 3, 2012, we acquired the Crossroads processing plant and associated gathering system from Penn Virginia Resource Partners, L.P. for $63.0 million. The acquisition was financed at closing with borrowings under our revolving credit facility. The Crossroads system, located in the southeastern portion of Harrison County in East Texas, includes approximately 8 miles of gas gathering pipeline, an 80 MMcf/d cryogenic processing plant, approximately 20 miles of NGL pipeline and a 50% ownership interest in an approximately 11-mile residue gas pipeline, or CrossPoint Pipeline, LLC, which we have accounted for as an unconsolidated affiliate using the equity method. The Crossroads system is a part of our East Texas system, which is included in our Natural Gas Services segment. We have accounted for the Crossroads business combination based on estimates of the fair value of assets acquired and liabilities assumed, including: property, plant and equipment; the equity investment in CrossPoint Pipeline, LLC; a liability for a firm transportation agreement which expires in 2015; and a gas purchase agreement under which a portion of those firm transportation payments are recoverable. Expected cash payments and receipts have been recorded at their estimated fair value and are included in other current liabilities, other long-term liabilities, and accounts receivable as of the acquisition date. The preliminary estimates of the fair value of identifiable assets acquired and liabilities assumed are subject to revisions, which may result in adjustments to the preliminary values as additional information relative to the fair value of assets and liabilities becomes available. The values assigned to the assets acquired and liabilities assumed may change in subsequent financial statements pending the final estimates of fair value. The following table summarizes the aggregate consideration and fair value of the identifiable assets acquired and liabilities assumed in the acquisition of Crossroads as of the acquisition date:
The results of operations for acquisitions accounted for as a business combination are included in our results subsequent to the date of acquisition. Accordingly, total operating revenues of $21.5 million and net income of $1.2 million associated with Crossroads from the acquisition date to December 31, 2012 are included in our consolidated statement of operations. Supplemental pro forma information is presented for comparative periods prior to the date of acquisition; however, comparative periods in the consolidated financial statements are not adjusted to include the results of the acquisition. The following tables present unaudited supplemental pro forma information for the consolidated statement of operations for the years ended December 31, 2012 and 2011, as if the acquisition of Crossroads had occurred at the beginning of the earliest period presented.
The supplemental pro forma total operating revenues for the year ended December 31, 2012 was adjusted to eliminate $5.4 million related to a contractual gas processing arrangement between us and Crossroads during the period. The supplemental pro forma information is not intended to reflect actual results that would have occurred if the acquired business had been combined during the periods presented, nor is it intended to be indicative of the results of operations that may be achieved by us in the future. On July 2, 2012, we acquired the minority ownership interests in two non-operated Mont Belvieu fractionators, or the Mont Belvieu fractionators, from DCP Midstream, LLC for aggregate consideration of $200.0 million, plus $4.6 million in working capital and other customary purchase price adjustments. $60.0 million of the aggregate consideration was financed by the issuance at closing of 1,536,098 of our common units to DCP Midstream, LLC. We entered into a 2-year Term Loan Agreement to fund the remaining $140.0 million. The $174.8 million excess purchase price over the carrying value of the acquired investments was recorded as a decrease in common unitholders’ equity. The minority ownership interests include a 12.5% interest in the Enterprise fractionator, which is operated by Enterprise Products Partners L.P., and a 20% interest in the Mont Belvieu 1 fractionator, which is operated by ONEOK Partners. We have accounted for the results of the minority ownership interests in the Mont Belvieu fractionators prospectively from the date of acquisition. The Mont Belvieu fractionators are accounted for as unconsolidated affiliates using the equity method and are included in our NGL Logistics segment. On April 12, 2012, we acquired a 10% ownership interest in the Texas Express Pipeline joint venture from the operator, Enterprise Products Partners, L.P., or Enterprise, representing an approximate investment of $85.0 million in the joint venture. At closing, we paid $10.9 million for our 10% ownership interest in the Texas Express Pipeline joint venture, representing our proportionate share of the investment through the closing date, and will be responsible for spending an approximate $75.0 million for our share of the remaining construction costs of the pipeline. Originating near Skellytown in Carson County, Texas, the 20-inch diameter Texas Express Pipeline will extend approximately 580 miles to Enterprise’s natural gas liquids fractionation and storage complex at Mont Belvieu, Texas, and will provide access to other third party facilities in the area. The Texas Express Pipeline will have an initial capacity of approximately 280 MBbls/d and as of December 31, 2012, has in place long-term, fee-based, ship-or-pay transportation commitments of 252 MBbls/d, including a commitment from DCP Midstream, LLC of 20 MBbls/d. The pipeline is expected to be completed in mid-2013. On March 30, 2012, we acquired the remaining 66.67% interest in Southeast Texas and commodity derivative hedge instruments (also referred to as the NGL Hedge) related to the Southeast Texas storage business for consideration of $240.0 million, subject to working capital and other customary purchase price adjustments. $192.0 million of the consideration was financed with a portion of the net proceeds from our 4.95% 10-year Senior Notes offering. The remaining $48.0 million consideration was financed by the issuance at closing of an aggregate of 1,000,417 of our common units to DCP Midstream, LLC. DCP Midstream, LLC also provided fixed price NGL commodity derivatives, valued at $39.5 million, for the three year period subsequent to closing the newly acquired interest. The $8.9 million deficit purchase price under the carrying value of the acquired net assets and the $48.0 million of common units issued as consideration for this acquisition were recorded as an increase in common unitholders’ equity. Prior to the acquisition of the additional interest in Southeast Texas, we owned a 33.33% interest which we accounted for as an unconsolidated affiliate using the equity method. Certain of the NGL commodity derivatives were valued at $24.6 million and represent consideration for the termination of a fee-based storage arrangement we had with DCP Midstream, LLC in conjunction with our initial 33.33% interest in Southeast Texas; the remaining portion of the commodity derivatives, valued at $14.9 million, mitigate a portion of our currently anticipated commodity price risk associated with the gathering and processing portion of the 66.67% interest in Southeast Texas acquired on March 30, 2012. The acquisition of the remaining 66.67% interest in Southeast Texas represents a transaction between entities under common control and a change in reporting entity. Accordingly, our consolidated financial statements have been adjusted to retrospectively include the historical results of our 100% interest in Southeast Texas and the commodity derivative hedge instruments associated with the storage business for all periods presented, similar to the pooling method.
Combined Financial Information The results of our 100% interest in Southeast Texas are included in the consolidated balance sheets as of December 31, 2012 and 2011. The following table presents the previously reported December 31, 2011 consolidated balance sheet, adjusted for the acquisition of the remaining 66.67% interest in Southeast Texas from DCP Midstream, LLC: As of December 31, 2011
The results of our 100% interest in Southeast Texas are included in the consolidated statements of operations for the years ended December 31, 2012, 2011 and 2010. The following tables present the previously reported consolidated statements of operations for the years ended December 31, 2011 and 2010, adjusted for the acquisition of the remaining 66.67% interest in Southeast Texas from DCP Midstream, LLC: Year Ended December 31, 2011
Year Ended December 31, 2010
The currently reported results are not intended to reflect actual results that would have occurred if the acquired business had been combined during the period presented, nor is it intended to be indicative of the results of operations that may be achieved by us in the future. On January 3, 2012, we acquired the remaining 49.9% interest in East Texas from DCP Midstream, LLC for consideration of $165.0 million, subject to working capital and other customary purchase price adjustments. $132.0 million of the consideration was financed with proceeds from a 2-year Term Loan Agreement. The remaining $33.0 million consideration was financed by the issuance at closing of an aggregate of 727,520 of our common units to DCP Midstream, LLC. The $22.7 million deficit purchase price under the carrying value of the acquired net assets and the $33.0 million of common units issued as consideration for this acquisition were recorded as an increase in common unitholders’ equity. Prior to the contribution of the additional interest in East Texas, we owned a 50.1% interest which we accounted for as a consolidated subsidiary. The contribution of the remaining 49.9% interest in East Texas represents a transaction between entities under common control, but does not represent a change in reporting entity. Accordingly, we have included the results of the remaining 49.9% interest in East Texas prospectively from the date of contribution. |
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- Definition
The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| Agreements and Transactions with Affiliates |
DCP Midstream, LLC Omnibus Agreement and Other General and Administrative Charges We have entered into an omnibus agreement, as amended, or the Omnibus Agreement, with DCP Midstream, LLC. Following is a summary of the fees we incurred under the Omnibus Agreement as well as other fees paid to DCP Midstream, LLC:
Under the Omnibus Agreement, we are required to reimburse DCP Midstream, LLC for salaries of operating personnel and employee benefits, as well as capital expenditures, maintenance and repair costs, taxes and other direct costs incurred by DCP Midstream, LLC on our behalf. We also pay DCP Midstream, LLC an annual fee under the Omnibus Agreement for centralized corporate functions performed by DCP Midstream, LLC on our behalf, including legal, accounting, cash management, insurance administration and claims processing, risk management, health, safety and environmental, information technology, human resources, credit, payroll, taxes and engineering. On January 3, 2012, we extended the omnibus agreement through December 31, 2012 for an annual fee of $17.6 million, with the primary increase resulting from the acquisition of the remaining 49.9% interest in East Texas. On March 30, 2012, in conjunction with our acquisition of the remaining 66.67% interest in Southeast Texas, we increased the annual fee we pay to DCP Midstream, LLC under the agreement by $10.3 million, prorated for the remainder of the 2012 calendar year. These fees were previously allocated to East Texas and Southeast Texas. In July 2012, in conjunction with our acquisition of the minority ownership interests in the Mont Belvieu fractionators, we increased the annual fee we pay to DCP Midstream, LLC by $0.2 million, prorated for the remainder of the 2012 calendar year. As a result of these transactions, the annual fee payable in future years to DCP Midstream, LLC will be $28.1 million. The Omnibus Agreement also addresses the following matters:
Before the addition of East Texas and Southeast Texas to the Omnibus Agreement, East Texas and Southeast Texas incurred general and administrative expenses directly from DCP Midstream, LLC. During the years ended December 31, 2011 and 2010, East Texas incurred $7.5 million and $7.8 million, respectively, and during the years ended December 31, 2012, 2011 and 2010, Southeast Texas incurred $2.5 million, $10.0 million and $12.1 million, respectively, which includes expenses for our predecessor operations. General and administrative expenses incurred by East Texas and Southeast Texas effective January 3, 2012 and March 30, 2012, respectively, are covered by the Omnibus Agreement. In addition to the Omnibus Agreement and amounts incurred by East Texas and Southeast Texas, we incurred other fees with DCP Midstream, LLC, which includes expenses for our predecessor operations, of $1.4 million, $1.4 million and $1.5 million for the years ended December 31, 2012, 2011 and 2010, respectively. These amounts include allocated expenses, including professional services, insurance, internal audit and various other corporate functions. On February 14, 2013, we entered into a Services Agreement with DCP Midstream, LLC, which replaces the Omnibus Agreement, whereby DCP Midstream, LLC will continue to provide us with general and administrative services previously provided under the Omnibus Agreement. The annual fee payable in future years to DCP Midstream, LLC under the Services Agreement will be consistent with the fee structure previously payable under the Omnibus Agreement, and will be $28.6 million for 2013. Pursuant to the Services Agreement, we will reimburse DCP Midstream, LLC for expenses and expenditures incurred or payments made on our behalf. Competition None of DCP Midstream, LLC, or any of its affiliates, including Spectra Energy and Phillips 66, is restricted, under either the partnership agreement or the Omnibus Agreement, from competing with us. DCP Midstream, LLC and any of its affiliates, including Spectra Energy and Phillips 66, may acquire, construct or dispose of additional midstream energy or other assets in the future without any obligation to offer us the opportunity to purchase or construct those assets. Other Agreements and Transactions with DCP Midstream, LLC DCP Midstream, LLC was a significant customer during the years ended December 31, 2012, 2011 and 2010. We sell a portion of our residue gas, NGLs and condensate to, purchase natural gas and other petroleum products from, and provide gathering and transportation services for, DCP Midstream, LLC. We anticipate continuing to purchase from and sell commodities and services to DCP Midstream, LLC in the ordinary course of business. In addition, DCP Midstream, LLC conducts derivative activities on our behalf. We have and may continue to enter into derivative transactions directly with DCP Midstream, LLC, whereby DCP Midstream, LLC is the counterparty. We have a contractual arrangement with DCP Midstream, LLC, through March 2022, in which we pay DCP Midstream, LLC a fee for processing services associated with the gas we gather on our Southern Oklahoma system, which is part of our Natural Gas Services segment. In addition, in February 2010, a contract was signed with DCP Midstream, LLC providing for adjustments to those fees based upon plant efficiencies related to our portion of volumes from the Southern Oklahoma system being processed at DCP Midstream, LLC’s plant through March 2022. We generally report fees associated with these activities in the consolidated statements of operations as purchases of natural gas, propane, NGLs and condensate from affiliates. In addition, as part of this arrangement, DCP Midstream, LLC pays us a fee for certain gathering services. We generally report revenues associated with these activities in the consolidated statements of operations as transportation, processing and other to affiliates. DCP Midstream, LLC owns certain assets and is party to certain contractual relationships around our Pelico system, included in our Northern Louisiana system, which is part of our Natural Gas Services segment, that are periodically used for the benefit of Pelico. DCP Midstream, LLC is able to source natural gas upstream of Pelico and deliver it to us and is able to take natural gas from the outlet of the Pelico system and market it downstream of Pelico. We purchase natural gas from DCP Midstream, LLC upstream of Pelico and transport it to Pelico under an interruptible transportation agreement with an affiliate. Our purchases from DCP Midstream, LLC are at DCP Midstream, LLC’s actual acquisition cost plus any transportation service charges. Volumes that exceed our on-system demand are sold to DCP Midstream, LLC at an index-based price, less contractually agreed to marketing fees. Revenues associated with these activities are reported gross in our consolidated statements of operations as sales of natural gas, propane, NGLs and condensate to affiliates. In our Natural Gas Services segment, we sell NGLs processed at certain of our plants, and sell condensate removed from the gas gathering systems that deliver to certain of our systems under contracts to a subsidiary of DCP Midstream, LLC equal to that subsidiary’s net weighted-average sales price, adjusted for transportation, processing and other charges from the tailgate of the respective asset. As a result of a downstream outage, certain of our assets were required to curtail NGL production during 2012. DCP Midstream, LLC has reimbursed us for the impact of the curtailment and accordingly, we have recorded $2.5 million to sales of natural gas, propane, NGLs and condensate to affiliates and $0.2 million to transportation, processing and other to affiliates in the consolidated statements of operations for the year ended December 31, 2012. In conjunction with our acquisitions of our East Texas and Southeast Texas systems, which are part of our Natural Gas Services segment, we entered into agreements with DCP Midstream, LLC whereby DCP Midstream, LLC will reimburse us for certain expenditures on East Texas and Southeast Texas capital projects. These reimbursements are for specific capital projects which have commenced within three years from the respective acquisition dates. DCP Midstream, LLC made capital contributions to East Texas for capital projects of $5.3 million, $18.3 million and $13.8 million for the years ended December 31, 2012, 2011 and 2010, respectively. DCP Midstream, LLC made capital contributions to Southeast Texas for capital projects of $4.9 million for the year ended December 31, 2012. During the year ended December 31, 2011, East Texas received $7.8 million in business interruption recoveries related to the first quarter 2009 fire that was caused by a third party underground pipeline rupture outside of our property, or the East Texas recovery settlement. We have allocated the recoveries based upon relative ownership percentages at the time the losses were incurred, factoring in amounts previously reimbursed to us by DCP Midstream, LLC. For the year ended December 31, 2011, we recorded $6.6 million to our consolidated statement of operations in “sales of natural gas, propane, NGLs and condensate”, with $4.6 million representing DCP Midstream, LLC’s portion in “net income attributable to noncontrolling interests.” On September 16, 2010, we entered into an agreement with DCP Midstream, LLC to sell certain surplus equipment at Collbran, part of our Natural Gas Services segment, with a net book value of $6.2 million for net proceeds of $3.6 million. The surplus equipment is the result of a consolidation of operations at our Anderson Gulch plant in the Piceance Basin. The net proceeds of $3.6 million were distributed 75% to us and 25% to the noncontrolling interest in Collbran, based upon proportionate ownership, during the year ended December 31, 2010. The sale was completed when title to the surplus equipment passed to DCP Midstream, LLC in March 2011. We have recognized a distribution of $2.6 million for year ended December 31, 2011 to DCP Midstream, LLC in our consolidated statements of changes in equity representing the difference between the net book value and the proceeds received for the surplus equipment. In our NGL Logistics segment, we also have a contractual arrangement with a subsidiary of DCP Midstream, LLC that provides that DCP Midstream, LLC will pay us to transport NGLs over our Seabreeze and Wilbreeze pipelines, pursuant to fee-based rates that will be applied to the volumes transported. DCP Midstream, LLC is the sole shipper on these pipelines under the transportation agreements. We generally report revenues associated with these activities in the consolidated statements of operations as transportation, processing and other to affiliates.
With respect to our Wattenberg pipeline, effective January 1, 2011, we entered into a 10-year dedication and transportation agreement with a subsidiary of DCP Midstream, LLC whereby certain NGL volumes produced at several of DCP Midstream, LLC’s processing facilities are dedicated for transportation on the Wattenberg pipeline. We collect fee-based transportation revenues under our tariff. We generally report revenues associated with these activities in the consolidated statements of operations as transportation, processing and other to affiliates. We pay a fee to DCP Midstream, LLC to operate our DJ Basin NGL fractionators and receive fees for the processing of DCP Midstream, LLC’s committed NGLs produced by them in Colorado at our DJ Basin NGL fractionators under agreements that are effective through March 2018. We incurred fees of $0.6 million during each of the years ended December 31, 2012 and 2011, which are included in operating and maintenance expense in the consolidated statements of operations. DCP Midstream, LLC has issued parental guarantees, totaling $25.0 million as of December 31, 2012, in favor of certain counterparties to our commodity derivative instruments to mitigate a portion of our collateral requirements with those counterparties. We pay DCP Midstream, LLC a fee of 0.5% per annum on these outstanding guarantees. Spectra Energy We had propane supply agreements with Spectra Energy that expired in April 2012, which provided us propane supply at our marine terminals, included in our Wholesale Propane Logistics segment, for up to approximately 185 million gallons of propane annually. ConocoPhillips and Phillips 66 Prior to May 2012, DCP Midstream, LLC and its subsidiaries and affiliates, collectively referred to as DCP Midstream, LLC, was owned 50% by Spectra Energy Corp, or Spectra Energy, and 50% by ConocoPhillips. In May 2012, ConocoPhillips separated its business into two stand-alone publicly traded companies. As a result of this transaction, DCP Midstream, LLC is no longer owned 50% by ConocoPhillips. ConocoPhillips’ 50% ownership interest in DCP Midstream, LLC has been transferred to the new downstream company, Phillips 66. We have multiple agreements with Phillips 66 and its affiliates, and anticipate continuing to sell to Phillips 66 and its affiliates in the ordinary course of business. Prior to ConocoPhillips’ separation in May 2012, these agreements were with ConocoPhillips. We continue to have agreements with ConocoPhillips, including fee-based and percent-of-proceeds gathering and processing arrangements, and gas purchase and gas sales agreements; however, we do not consider ConocoPhillips to be a related party effective May 1, 2012.
Summary of Transactions with Affiliates The following table summarizes the transactions with affiliates:
We had balances with affiliates as follows:
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- Definition
The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Inventories
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Dec. 31, 2012
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| Inventories |
Inventories were as follows:
We recognize lower of cost or market adjustments when the carrying value of our inventories exceeds their estimated market value. These non-cash charges are a component of purchases of natural gas, propane and NGLs in the consolidated statements of operations. We recognized $19.3 million and $6.4 million in lower of cost or market adjustments during the year ended December 31, 2012 and 2011, respectively. |
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- Definition
The entire disclosure for inventory. This may include, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the major classes of inventory, and the nature of the cost elements included in inventory. If inventory is stated above cost, accrued net losses on firm purchase commitments for inventory and losses resulting from valuing inventory at the lower-of-cost-or-market may also be included. For LIFO inventory, may disclose the amount and basis for determining the excess of replacement or current cost over stated LIFO value and the effects of a LIFO quantities liquidation that impacts net income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Property, Plant and Equipment
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Dec. 31, 2012
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| Property, Plant and Equipment |
A summary of property, plant and equipment by classification is as follows:
Interest capitalized on construction projects in 2012, 2011 and 2010, was $7.2 million, $1.6 million and $0.2 million, respectively. We revised the depreciable lives for our gathering and transmission systems, processing, storage and terminal facilities, and other assets effective April 1, 2012. The key contributing factors to the change in depreciable lives is an increase in the estimated remaining economically recoverable reserves resulting from the development of techniques that improve commodity production in the regions our assets serve. Advances in extraction processes, along with better technology used to locate commodity reserves, is giving producers greater access to unconventional commodities. Based on our property, plant and equipment as of April 1, 2012, the new remaining depreciable lives resulted in an approximate $35.7 million reduction in depreciation expense for the year ended December 31, 2012. This change in our estimated depreciable lives increased net income per limited partner unit by $0.66 for the year ended December 31, 2012. In connection with our evaluation of useful lives, we corrected the classification for certain assets within the presentation of our major classes of property, plant and equipment as of December 31, 2011. Depreciation expense was $55.0 million, $92.2 million and $83.2 million for the years ended December 31, 2012, 2011 and 2010, respectively. Asset Retirement Obligations — As of December 31, 2012 and 2011, we had asset retirement obligations of $16.9 million and $12.4 million, respectively, included in other long-term liabilities in the consolidated balance sheets. During the first quarter of 2012, we recorded a change in estimate to increase our asset retirement obligations by approximately $4.3 million. The change in estimate was primarily attributable to a reassessment of anticipated timing of settlements and of the original asset retirement obligation estimated amounts. Accretion expense for the years ended December 31, 2012, 2011 and 2010 was $0.1 million, $0.7 million and $0.7 million, respectively. We identified various assets as having an indeterminate life, for which there is no requirement to establish a fair value for future retirement obligations associated with such assets. These assets include certain pipelines, gathering systems and processing facilities. A liability for these asset retirement obligations will be recorded only if and when a future retirement obligation with a determinable life is identified. These assets have an indeterminate life because they are owned and will operate for an indeterminate future period when properly maintained. Additionally, if the portion of an owned plant containing asbestos were to be modified or dismantled, we would be legally required to remove the asbestos. We currently have no plans to take actions that would require the removal of the asbestos in these assets. Accordingly, the fair value of the asset retirement obligation related to this asbestos cannot be estimated and no obligation has been recorded. |
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- Definition
The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Goodwill and Intangible Assets
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Dec. 31, 2012
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| Goodwill and Intangible Assets |
The carrying amount of goodwill is as follows:
The carrying value of goodwill as of December 31, 2012 and 2011 was $82.2 million for each of the years for our Natural Gas Services segment, $34.7 million for each of the years for our NGL Logistics segment, and $36.9 million for each of the years for our Wholesale Propane Logistics segment. We performed our annual goodwill assessment at the reporting unit level, which is identified by assessing whether the components of our operating segments constitute businesses for which discrete financial information is available, whether segment management regularly reviews the operating results of those components and whether the economic and regulatory characteristics are similar. As a result of our assessment, we concluded that the entire amount of goodwill disclosed on the condensed consolidated balance sheet is recoverable. We used a discounted cash flow analysis to perform the assessment. Key assumptions in the analysis include the use of an appropriate discount rate, terminal year multiples, and estimated future cash flows including an estimate of operating and general and administrative costs. In estimating cash flows, we incorporate current market information, as well as historical and other factors, into our forecasted commodity prices. If actual results are not consistent with our assumptions and estimates, or our assumptions and estimates change due to new information, we may be exposed to goodwill impairment charges, which would be recognized in the period in which the carrying value exceeds fair value. Intangible assets consist of customer contracts, including commodity purchase, transportation and processing contracts, and related relationships. The gross carrying amount and accumulated amortization of these intangible assets are included in the accompanying consolidated balance sheets as intangible assets, net, and are as follows:
For the years December 31, 2012, 2011 and 2010, we recorded amortization expense of $8.4 million, $8.4 million and $4.9 million, respectively. As of December 31, 2012, the remaining amortization periods ranged from approximately 9 years to 23 years, with a weighted-average remaining period of approximately 18 years. Estimated future amortization for these intangible assets is as follows:
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- Definition
The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Investments in Unconsolidated Affiliates
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Dec. 31, 2012
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| Investments in Unconsolidated Affiliates |
The following table summarizes our investments in unconsolidated affiliates:
There was a deficit between the carrying amount of the investment and the underlying equity of Discovery of $30.2 million and $32.6 million at December 31, 2012 and 2011, respectively, which is associated with, and is being accreted over, the life of the underlying long-lived assets of Discovery. There was a deficit between the carrying amount of the investment and the underlying equity of Mont Belvieu 1 of $5.5 million at December 31, 2012, which is associated with, and is being accreted over, the life of the underlying long-lived assets of Mont Belvieu 1. Earnings from investments in unconsolidated affiliates were as follows:
The following summarizes combined financial information of our investments in unconsolidated affiliates:
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- Definition
The entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Fair Value Measurement
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| Fair Value Measurement |
Determination of Fair Value Below is a general description of our valuation methodologies for derivative financial assets and liabilities which are measured at fair value. Fair values are generally based upon quoted market prices or prices obtained through external sources, where available. If listed market prices or quotes are not available, we determine fair value based upon a market quote, adjusted by other market-based or independently sourced market data, such as historical commodity volatilities, crude oil future yield curves, and/or counterparty specific considerations. These adjustments result in a fair value for each asset or liability under an “exit price” methodology, in line with how we believe a marketplace participant would value that asset or liability. Fair values are adjusted to reflect the credit risk inherent in the transaction as well as the potential impact of liquidating open positions in an orderly manner over a reasonable time period under current conditions. These adjustments may include amounts to reflect counterparty credit quality, the effect of our own creditworthiness, the time value of money and/or the liquidity of the market.
We manage our derivative instruments on a portfolio basis and the valuation adjustments described above are calculated on this basis. We believe that the portfolio level approach represents the highest and best use for these assets as there are benefits inherent in naturally offsetting positions within the portfolio at any given time, and this approach is consistent with how a market participant would view and value the assets and liabilities. Although we take a portfolio approach to managing these assets/liabilities, in order to reflect the fair value of any one individual contract within the portfolio, we allocate all valuation adjustments down to the contract level, to the extent deemed necessary, based upon either the notional contract volume, or the contract value, whichever is more applicable. The methods described above may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While we believe that our valuation methods are appropriate and consistent with other market participants, we recognize that the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. We review our fair value policies on a regular basis taking into consideration changes in the marketplace and, if necessary, will adjust our policies accordingly. See Note 11 Risk Management and Hedging Activities. Valuation Hierarchy Our fair value measurements are grouped into a three-level valuation hierarchy. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. The three levels are defined as follows.
A financial instrument’s categorization within the hierarchy is based upon the input that requires the highest degree of judgment in the determination of the instrument’s fair value. Following is a description of the valuation methodologies used as well as the general classification of such instruments pursuant to the hierarchy. Commodity Derivative Assets and Liabilities We enter into a variety of derivative financial instruments, which may include over the counter, or OTC, instruments, such as natural gas, crude oil or NGL contracts.
Within our Natural Gas Services segment we typically use OTC derivative contracts in order to mitigate a portion of our exposure to natural gas, NGL and condensate price changes. We also may enter into natural gas derivatives to lock in margin around our storage and transportation assets. These instruments are generally classified as Level 2. Depending upon market conditions and our strategy, we may enter into OTC derivative positions with a significant time horizon to maturity, and market prices for these OTC derivatives may only be readily observable for a portion of the duration of the instrument. In order to calculate the fair value of these instruments, readily observable market information is utilized to the extent that it is available; however, in the event that readily observable market data is not available, we may interpolate or extrapolate based upon observable data. In instances where we utilize an interpolated or extrapolated value, and it is considered significant to the valuation of the contract as a whole, we would classify the instrument within Level 3. Within our Wholesale Propane Logistics segment, we may enter into a variety of financial instruments to either secure sales or purchase prices, or capture a variety of market opportunities. Since financial instruments for NGLs tend to be counterparty and location specific, we primarily use the OTC derivative instrument markets, which are not as active and liquid as exchange traded instruments. Market quotes for such contracts may only be available for short dated positions (up to six months), and an active market itself may not exist beyond such time horizon. Contracts entered into with a relatively short time horizon for which prices are readily observable in the OTC market are generally classified within Level 2. Contracts with a longer time horizon, for which we internally generate a forward curve to value such instruments, are generally classified within Level 3. The internally generated curve may utilize a variety of assumptions including, but not limited to, historical and future expected relationship of NGL prices to crude oil prices, the knowledge of expected supply sources coming on line, expected weather trends within certain regions of the United States, and the future expected demand for NGLs. Each instrument is assigned to a level within the hierarchy at the end of each financial quarter depending upon the extent to which the valuation inputs are observable. Generally, an instrument will move toward a level within the hierarchy that requires a lower degree of judgment as the time to maturity approaches, and as the markets in which the asset trades will likely become more liquid and prices more readily available in the market, thus reducing the need to rely upon our internally developed assumptions. However, the level of a given instrument may change, in either direction, depending upon market conditions and the availability of market observable data. Interest Rate Derivative Assets and Liabilities We use interest rate swap and forward-starting interest rate swap agreements as part of our overall capital strategy. These instruments effectively exchange a portion of our existing floating rate debt for fixed-rate debt and lock in rates on our anticipated future fixed-rate debt, respectively. Our swaps are generally priced based upon a London Interbank Offered Rate, or LIBOR, instrument with similar duration, adjusted by the credit spread between our company and the LIBOR instrument. Given that a portion of the swap value is derived from the credit spread, which may be observed by comparing similar assets in the market, these instruments are classified within Level 2. Default risk on either side of the swap transaction is also considered in the valuation. We record counterparty credit and entity valuation adjustments in the valuation of our interest rate swaps; however, these reserves are not considered to be a significant input to the overall valuation. Nonfinancial Assets and Liabilities We utilize fair value on a non-recurring basis to perform impairment tests as required on our property, plant and equipment, goodwill and intangible assets. Assets and liabilities acquired in business combinations are recorded at their fair value as of the date of acquisition. The inputs used to determine such fair value are primarily based upon internally developed cash flow models and would generally be classified within Level 3, in the event that we were required to measure and record such assets at fair value within our consolidated financial statements. Additionally, we use fair value to determine the inception value of our asset retirement obligations. The inputs used to determine such fair value are primarily based upon costs incurred historically for similar work, as well as estimates from independent third parties for costs that would be incurred to restore leased property to the contractually stipulated condition, and would generally be classified within Level 3. We utilize fair value on a recurring basis to measure our contingent consideration that is a result of certain acquisitions. The inputs used to determine such fair value are primarily based upon internally developed cash flow models and are classified within Level 3. The following table presents the financial instruments carried at fair value as of December 31, 2012 and 2011, by consolidated balance sheet caption and by valuation hierarchy, as described above:
Changes in Levels 1 and 2 Fair Value Measurements We manage our overall risk at the portfolio level, and in the execution of our strategy, we may use a combination of financial instruments, which may be classified within any level. Within our Natural Gas Services segment we typically use OTC derivative contracts in order to mitigate a portion of our exposure to natural gas, NGL and condensate price changes. We also may enter into natural gas derivatives to lock in margin around our storage and transportation assets. These instruments are generally classified as Level 2. The determination to classify a financial instrument within Level 1 or Level 2 is based upon the availability of quoted prices for identical or similar assets and liabilities in active markets. Depending upon the information readily observable in the market, and/or the use of identical or similar quoted prices, which are significant to the overall valuation, the classification of any individual financial instrument may differ from one measurement date to the next. To qualify as a transfer, the asset or liability must have existed in the previous reporting period and moved into a different level during the current period. In the event that there is a movement between the classification of an instrument as Level 1 or 2, the transfer between Level 1 and Level 2 would be reflected in a table as Transfers in/out of Level 1/Level 2. During the year ended December 31, 2012, there were no transfers between Level 1 and Level 2 of the fair value hierarchy. Changes in Level 3 Fair Value Measurements The tables below illustrate a rollforward of the amounts included in our consolidated balance sheets for derivative financial instruments that we have classified within Level 3. The determination to classify a financial instrument within Level 3 is based upon the significance of the unobservable factors used in determining the overall fair value of the instrument. Since financial instruments classified as Level 3 typically include a combination of observable components (that is, components that are actively quoted and can be validated to external sources) and unobservable components, the gains and losses in the table below may include changes in fair value due in part to observable market factors, or changes to our assumptions on the unobservable components. Depending upon the information readily observable in the market, and/or the use of unobservable inputs, which are significant to the overall valuation, the classification of any individual financial instrument may differ from one measurement date to the next. The significant unobservable inputs used in determining fair value include adjustments by other market based or independently sourced market data such as historical commodity volatilities, crude oil future yield curves, and/or counterparty specific considerations. In the event that there is a movement to/from the classification of an instrument as Level 3, we have reflected such items in the table below within the “Transfers into/out of Level 3” caption. We manage our overall risk at the portfolio level, and in the execution of our strategy, we may use a combination of financial instruments, which may be classified within any level. Since Level 1 and Level 2 risk management instruments are not included in the rollforward below, the gains or losses in the table do not reflect the effect of our total risk management activities.
During years ended December 31, 2012, 2011 and 2010, we had no transfers into or out of Levels 1 and 2. To qualify as a transfer, the asset or liability must have existed in the previous reporting period and moved into a different level during the current period. Quantitative Information and Fair Value Sensitivities Related to Level 3 Unobservable Inputs We utilize the market approach to measure the fair value of our commodity contracts. The significant unobservable inputs used in this approach to fair value are longer dated price quotes. Our sensitivity to these longer dated forward curve prices are presented in the table below. Significant changes in any of those inputs in isolation would result in significantly different fair value measurements, depending on our short or long position in contracts.
Estimated Fair Value of Financial Instruments Valuation of a contract’s fair value is validated by an internal group independent of the marketing group. While common industry practices are used to develop valuation techniques, changes in pricing methodologies or the underlying assumptions could result in significantly different fair values and income recognition. When available, quoted market prices or prices obtained through external sources are used to determine a contract’s fair value. For contracts with a delivery location or duration for which quoted market prices are not available, fair value is determined based on pricing models developed primarily from historical and expected relationship with quoted market prices. Values are adjusted to reflect the credit risk inherent in the transaction as well as the potential impact of liquidating open positions in an orderly manner over a reasonable time period under current conditions. Changes in market prices and management estimates directly affect the estimated fair value of these contracts. Accordingly, it is reasonably possible that such estimates may change in the near term. The fair value of our interest rate swaps and commodity non-trading derivatives is based on prices supported by quoted market prices and other external sources and prices based on models and other valuation methods. The “prices supported by quoted market prices and other external sources” category includes our interest rate swaps, our NGL and crude oil swaps, and our NYMEX positions in natural gas. In addition, this category includes our forward positions in natural gas for which our forward price curves are obtained from a third party pricing service and then validated through an internal process which includes the use of independent broker quotes. This category also includes our forward positions in NGLs at points for which over-the-counter, or OTC, broker quotes for similar assets or liabilities are available for the full term of the instrument. This category also includes “strip” transactions whose pricing inputs are directly or indirectly observable from external sources and then modeled to daily or monthly prices as appropriate. The “prices based on models and other valuation methods” category includes the value of transactions for which inputs to the fair value of the instrument are unobservable in the marketplace and are considered significant to the overall fair value of the instrument. The fair value of these instruments may be based upon an internally developed price curve, which was constructed as a result of the long dated nature of the transaction or the illiquidity of the market point. We have determined fair value amounts using available market information and appropriate valuation methodologies. However, considerable judgment is required in interpreting market data to develop the estimates of fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts that we could realize in a current market exchange. The use of different market assumptions and/or estimation methods may have a material effect on the estimated fair value amounts. The fair value of accounts receivable and accounts payable are not materially different from their carrying amounts because of the short-term nature of these instruments or the stated rates approximating market rates. Derivative instruments are carried at fair value. Each of the carrying and fair values of outstanding balances under our Credit Agreement are $525.0 million as of December 31, 2012, and $497.0 million as of December 31, 2011. The carrying value of the 2.50% Senior Notes was $500.0 million as of December 31, 2012, which approximated fair value. The carrying and fair values of the 4.95% Senior Notes are $350.0 million and $373.9 million, respectively, as of December 31, 2012. The carrying and fair values of the 3.25% Senior Notes are $250.0 million and $258.8 million, respectively, as of December 31, 2012. The carrying value of the 3.25% Senior Notes as of December 31, 2011 was $250.0 million, which approximated fair value. We determine the fair value of our Credit Agreement borrowings based upon the discounted present value of expected future cash flows, taking into account the difference between the contractual borrowing spread and the spread for similar credit facilities available in the marketplace. We determine the fair value of our fixed-rate debt based on quotes obtained from bond dealers. We classify the fair values of our outstanding debt balances within Level 2 of the valuation hierarchy.
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- Definition
The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Debt
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Dec. 31, 2012
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| Debt |
Long-term debt was as follows:
Credit Agreement We have a $1.0 billion revolving credit facility that matures November 10, 2016, or the Credit Agreement. At December 31, 2012 and 2011, we had $1.0 million and $1.1 million, respectively, of letters of credit issued and outstanding under the Credit Agreement and the Prior Credit Agreement. As of December 31, 2012, the unused capacity under the Credit Agreement was $474.0 million, which was available for general working capital purposes. Our borrowing capacity is limited at December 31, 2012 by the Credit Agreement’s financial covenant requirements. Except in the case of a default, amounts borrowed under our Credit Agreement will not mature prior to the November 10, 2016 maturity date. Under the Credit Agreement, indebtedness under the revolving credit facility bears interest at either: (1) LIBOR, plus an applicable margin of 1.25% based on our current credit rating; or (2) (a) the base rate which shall be the higher of Wells Fargo Bank N.A.’s prime rate, the Federal Funds rate plus 0.50% or the LIBOR Market Index rate plus 1%, plus (b) an applicable margin of 0.25% based on our current credit rating. The revolving credit facility incurs an annual facility fee of 0.25% based on our current credit rating. This fee is paid on drawn and undrawn portions of the revolving credit facility. The Credit Agreement requires us to maintain a leverage ratio (the ratio of our consolidated indebtedness to our consolidated EBITDA, in each case as is defined by the Credit Agreement) of not more than 5.0 to 1.0, and following the consummation of qualifying acquisitions, not more than 5.5 to 1.0, on a temporary basis for three consecutive quarters, including the quarter in which such acquisition is consummated. Debt Securities On November 27, 2012, we issued $500.0 million of our 2.50% 5-year Senior Notes due December 1, 2017. We received net proceeds of $493.6 million, net of underwriters’ fees, related expenses and unamortized discounts of $6.4 million. Interest on the notes will be paid semi-annually on June 1 and December 1 of each year, commencing June 1, 2013. The notes will mature on December 1, 2017, unless redeemed prior to maturity. The underwriters’ fees and related expenses are deferred in other long-term assets in our consolidated balance sheets and will be amortized over the term of the notes. On March 13, 2012, we issued $350.0 million of our 4.95% 10-year Senior Notes due April 1, 2022. We received net proceeds of $345.8 million, net of underwriters’ fees, related expenses and unamortized discounts of $4.2 million, which we used to fund the cash portion of the acquisition of the remaining 66.67% interest in Southeast Texas and to repay funds borrowed under our Term Loan and Credit Agreement. Interest on the notes is paid semi-annually on April 1 and October 1 of each year. The notes will mature on April 1, 2022, unless redeemed prior to maturity. The underwriters’ fees and related expenses are deferred in other long-term assets in our consolidated balance sheets and will be amortized over the term of the notes. On September 30, 2010, we issued $250.0 million of our 3.25% Senior Notes due October 1, 2015. We received net proceeds of $247.7 million, net of underwriters’ fees, related expense and unamortized discounts of $2.3 million, which we used to repay funds borrowed under the revolver portion of our Credit Agreement. Interest on the notes is paid semi-annually on April 1 and October 1 of each year. The notes will mature on October 1, 2015, unless redeemed prior to maturity. The underwriters’ fees and related expense are deferred in other long-term assets in our consolidated balance sheets and will be amortized over the term of the notes. The notes are senior unsecured obligations, ranking equally in right of payment with other unsecured indebtedness, including indebtedness under our Credit Agreement. We are not required to make mandatory redemption or sinking fund payments with respect to any of these notes, and they are redeemable at a premium at our option.
Term Loan Agreements On November 2, 2012, we entered into a 2-year Term Loan Agreement and borrowed $343.5 million to fund the cash portion of the acquisition of a 33.33% interest in the Eagle Ford system. On July 2, 2012, we entered into a 2-year Term Loan Agreement and borrowed $140.0 million to fund the cash portion of the acquisition of the Mont Belvieu fractionators. In November 2012, we repaid both the term loans with proceeds from our 2.50% 5-year Senior Notes. On January 3, 2012, we entered into a 2-year Term Loan Agreement and borrowed $135.0 million which was used to fund the cash portion of the acquisition of the remaining 49.9% interest in East Texas. In March 2012, we repaid the term loan with proceeds from our 4.95% 10-year Senior Notes. The future maturities of long-term debt in the year indicated are as follows:
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- Definition
The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Risk Management and Hedging Activities
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Dec. 31, 2012
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| Risk Management and Hedging Activities |
Our day to day operations expose us to a variety of risks including but not limited to changes in the prices of commodities that we buy or sell, changes in interest rates, and the creditworthiness of each of our counterparties. We manage certain of these exposures with both physical and financial transactions. We have established a comprehensive risk management policy, or Risk Management Policy, and a risk management committee, or the Risk Management Committee, to monitor and manage market risks associated with commodity prices and counterparty credit. The Risk Management Committee is responsible for the overall management of credit risk and commodity price risk, including monitoring exposure limits. The following briefly describes each of the risks that we manage. Commodity Price Risk Cash Flow Protection Activities — We are exposed to the impact of market fluctuations in the prices of natural gas, NGLs and condensate as a result of our gathering, processing, sales and storage activities. For gathering, processing and storage services, we may receive cash or commodities as payment for these services, depending on the contract type. We enter into derivative financial instruments to mitigate a portion of the risk of weakening natural gas, NGL and condensate prices associated with our gathering, processing and sales activities, thereby stabilizing our cash flows. We have mitigated a portion of our expected commodity price risk associated with our gathering, processing and sales activities through 2016 with commodity derivative instruments. Our commodity derivative instruments used for our hedging program are a combination of direct NGL product, crude oil, and natural gas hedges. Due to the limited liquidity and tenor of the NGL derivative market, we have used crude oil swaps and costless collars to mitigate a portion of our commodity price exposure to NGLs. Historically, prices of NGLs have generally been related to crude oil prices, however there are periods of time when NGL pricing may be at a greater discount to crude oil, resulting in additional exposure to NGL commodity prices. During 2012, the relationship of NGLs to crude oil has been lower than historical relationships, however a significant amount of our NGL hedges from 2012 through 2015 are direct product hedges. When our crude oil swaps become short-term in nature, we have periodically converted certain crude oil derivatives to NGL derivatives by entering into offsetting crude oil swaps while adding NGL swaps. Our crude oil and NGL transactions are primarily accomplished through the use of forward contracts that effectively exchange our floating price risk for a fixed price. We also utilize crude oil costless collars that minimize our floating price risk by establishing a fixed price floor and a fixed price ceiling. However, the type of instrument that we use to mitigate a portion of our risk may vary depending upon our risk management objective. These transactions are not designated as hedging instruments for accounting purposes and the change in fair value is reflected within our consolidated statements of operations as a gain or a loss on commodity derivative activity. Our Wholesale Propane Logistics segment is generally designed to establish stable margins by entering into supply arrangements that specify prices based on established floating price indices and by entering into sales agreements that provide for floating prices that are tied to our variable supply costs plus a margin. To the extent possible, we match the pricing of our supply portfolio to our sales portfolio in order to lock in value and reduce our overall commodity price risk. However, to the extent that we carry propane inventories or our sales and supply arrangements are not aligned, we are exposed to market variables and commodity price risk. We manage the commodity price risk of our supply portfolio and sales portfolio with both physical and financial transactions, including fixed price sales. While the majority of our sales and purchases in this segment are index-based, occasionally, we may enter into fixed price sales agreements in the event that a propane distributor desires to purchase propane from us on a fixed price basis. In such cases, we may manage this risk with derivatives that allow us to swap our fixed price risk to market index prices that are matched to our market index supply costs. In addition, we may use financial derivatives to manage the value of our propane inventories. These transactions are not designated as hedging instruments for accounting purposes and any change in fair value is reflected in the current period within our consolidated statements of operations as a gain or loss on commodity derivative activity. Our portfolio of commodity derivative activity is primarily accounted for using the mark-to-market method of accounting, whereby changes in fair value are recorded directly to the consolidated statements of operations; however, depending upon our risk profile and objectives, in certain limited cases, we may execute transactions that qualify for the hedge method of accounting. Natural Gas Storage and Pipeline Asset Based Commodity Derivative Program — Our natural gas storage and pipeline assets are exposed to certain risks including changes in commodity prices. We manage commodity price risk related to our natural gas storage and pipeline assets through our commodity derivative program. The commercial activities related to our natural gas storage and pipeline assets primarily consist of the purchase and sale of gas and associated time spreads and basis spreads. A time spread transaction is executed by establishing a long gas position at one point in time and establishing an equal short gas position at a different point in time. Time spread transactions allow us to lock in a margin supported by the injection, withdrawal, and storage capacity of our natural gas storage assets. We may execute basis spread transactions to mitigate the risk of sale and purchase price differentials across our system. A basis spread transaction allows us to lock in a margin on our physical purchases and sales of gas, including injections and withdrawals from storage. We typically use swaps to execute these transactions, which are not designated as hedging instruments and are recorded at fair value with changes in fair value recorded in the current period consolidated statements of operations. While gas held in our storage locations is recorded at the lower of average cost or market, the derivative instruments that are used to manage our storage facilities are recorded at fair value and any changes in fair value are currently recorded in our consolidated statements of operations. Even though we may have economically hedged our exposure and locked in a future margin, the use of lower-of-cost-or-market accounting for our physical inventory and the use of mark-to-market accounting for our derivative instruments may subject our earnings to market volatility.
Commodity Cash Flow Hedges — On March 30, 2012, we acquired the remaining 66.67% interest in Southeast Texas and commodity derivative hedge instruments (also referred to as the NGL Hedge) related to the Southeast Texas storage business. During 2011, Southeast Texas commenced an expansion project to build an additional storage cavern. Upon completion of the expansion project, Southeast Texas will be required to purchase a significant amount of base gas to bring the storage cavern to operation. To mitigate risk associated with the forecasted purchase of natural gas in June, July and August 2013, Southeast Texas executed a series of derivative financial instruments, which have been designated as cash flow hedges. These cash flow hedges were in a loss position of $3.3 million as of December 31, 2012 and will fluctuate in value through the term of construction. Any effective changes in fair value of these derivative instruments will be deferred in AOCI until the underlying purchase of inventory occurs. While the cash paid or received upon settlement of these hedges will economically offset the cash required to purchase the base gas, following completion of the additional storage cavern, any deferred gain or loss at the time of the purchase will remain in AOCI until the cavern is emptied and the base gas is sold. In order for storage facilities to remain operational, a minimum level of base gas must be maintained in each storage cavern, which is capitalized on our consolidated balance sheets as a component of property, plant and equipment, net. To mitigate the risk associated with the forecasted re-purchase of base gas, in 2008 we executed a series of derivative financial instruments, which were designated as cash flow hedges. The cash paid upon settlement of these hedges economically offsets the cash paid to purchase the base gas. As a result, a deferred loss of $2.7 million was recognized and will remain in AOCI until such time that our cavern is emptied and the base gas is sold. Interest Rate Risk We mitigate a portion of our interest rate risk with interest rate swaps that reduce our exposure to market rate fluctuations by converting variable interest rates on our existing debt to fixed interest rates. The interest rate swap agreements convert the interest rate associated with the indebtedness outstanding under our revolving credit facility to a fixed-rate obligation, thereby reducing the exposure to market rate fluctuations. At December 31, 2011, we had interest rate swap agreements totaling $450.0 million, of which we had designated $425.0 million as cash flow hedges and accounted for the remaining $25.0 million under the mark-to-market method of accounting. In March 2012, we paid down a portion of the revolving credit facility and, as a result, we discontinued cash flow hedge accounting on $225.0 million of our interest rate swap agreements. $300.0 million of swap agreements settled in Q2 2012. At December 31, 2012, we had interest rate swap agreements extending through June 2014 totaling $150.0 million, which are designated as cash flow hedges. Based on our current operations, we believe our interest rate swap agreements mitigate our interest rate risk associated with our variable-rate debt. At December 31, 2012, $150.0 million of the agreements reprice prospectively approximately every 30 days. Under the terms of the interest rate swap agreements, we pay fixed-rates ranging from 2.94% to 2.99%, and receive interest payments based on the one-month LIBOR. Effectiveness of our interest rate swap agreements designated as cash flow hedges is determined by matching the principal balance and terms with that of the specified obligation. The effective portions of changes in fair value are recognized in AOCI in the consolidated balance sheets and are reclassified into earnings as the hedged transactions impact earnings. The effect that these swaps have on our consolidated financial statements, as well as the effect that is expected over the upcoming 12 months is summarized in the charts below. However, due to the volatility of the interest rate markets, the corresponding value in AOCI is subject to change prior to its reclassification into earnings. Ineffective portions of changes in fair value are recognized in earnings.
On March 8, 2012, we settled $195.0 million of our forward-starting interest rate swap agreements for $6.6 million. The remaining net deferred losses of $4.7 million in AOCI will be amortized into interest expense associated with our long-term debt offering through 2022. Contingent Credit Features Each of the above risks is managed through the execution of individual contracts with a variety of counterparties. Certain of our derivative contracts may contain credit-risk related contingent provisions that may require us to take certain actions in certain circumstances. We have International Swap Dealers Association, or ISDA, contracts which are standardized master legal arrangements that establish key terms and conditions which govern certain derivative transactions. These ISDA contracts contain standard credit-risk related contingent provisions. Some of the provisions we are subject to are outlined below.
Our commodity derivative contracts that are not governed by ISDA contracts do not have any credit-risk related contingent features. Depending upon the movement of commodity prices and interest rates, each of our individual contracts with counterparties to our commodity derivative instruments or to our interest rate swap instruments are in either a net asset or net liability position. As of December 31, 2012, we had $22.2 million of individual commodity derivative contracts that contain credit-risk related contingent features that were in a net liability position, and have not posted any cash collateral relative to such positions. If a credit-risk related event were to occur and we were required to net settle our position with an individual counterparty, our ISDA contracts permit us to net all outstanding contracts with that counterparty, whether in a net asset or net liability position, as well as any cash collateral already posted. As of December 31, 2012 if a credit-risk related event were to occur we may be required to post additional collateral. Additionally, although our commodity derivative contracts that contain credit-risk related contingent features were in a net liability position as of December 31, 2012, if a credit-risk related event were to occur, the net liability position would be partially offset by contracts in a net asset position reducing our net liability to $20.0 million. As of December 31, 2012, we had $150.0 million of individual interest rate swap instruments that were in a net liability position of $6.1 million and were subject to credit-risk related contingent features. If we were to have a default of any of our covenants to our Credit Agreement, that occurs and is continuing, the counterparties to our swap instruments have the right to request that we net settle the instrument in the form of cash.
Unconsolidated Affiliates Discovery Producer Services LLC, one of our unconsolidated affiliates, entered into agreements with a pipe vendor denominated in a foreign currency in connection with the expansion of the natural gas gathering pipeline system in the deepwater Gulf of Mexico, the Keathley Canyon Connector. Discovery entered into certain foreign currency derivative contracts to mitigate a portion of the foreign currency exchange risks which were designated as cash flow hedges. As these hedges are owned by Discovery, an unconsolidated affiliate, we include the impact to AOCI on our consolidated balance sheet. Collateral DCP Midstream, LLC had issued and outstanding parental guarantees totaling $25.0 million in favor of certain counterparties to our commodity derivative instruments. These parental guarantees reduce the amount of cash we may be required to post as collateral. As of December 31, 2012, we had no cash collateral posted with counterparties to our commodity derivative instruments. Summarized Derivative Information The following summarizes the balance within AOCI relative to our commodity, interest rate and foreign currency cash flow hedges:
The fair value of our derivative instruments that are designated as hedging instruments and those that are marked to market each period, as well as the location of each within our consolidated balance sheets, by major category, is summarized as follows:
The following table summarizes the impact on our consolidated balance sheet and consolidated statements of operations of our derivative instruments that are accounted for using the cash flow hedge method of accounting for each of the years ended December 31, 2012 and 2011:
Changes in value of derivative instruments, for which the hedge method of accounting has not been elected from one period to the next, are recorded in the consolidated statements of operations. The following summarizes these amounts and the location within the consolidated statements of operations that such amounts are reflected:
We do not have any derivative financial instruments that qualify as a hedge of a net investment.
The following tables represent, by commodity type, our net long or short positions that are expected to partially or entirely settle in each respective year. To the extent that we have long dated derivative positions that span multiple calendar years, the contract will appear in more than one line item in the tables below.
We periodically enter into interest rate swap agreements to mitigate a portion of our floating rate interest exposure. As of December 31, 2012, we have swaps with a notional value of $70.0 million and $80.0 million, which, in aggregate, exchange $150.0 million of our floating rate obligation to a fixed rate obligation through June 2014. |
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- Definition
The entire disclosure for the entity's entire derivative instruments and hedging activities. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising therefrom, and the amounts of and methodologies and assumptions used in determining the amounts of such items. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Partnership Equity and Distributions
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Dec. 31, 2012
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| Partnership Equity and Distributions |
General — Our partnership agreement requires that, within 45 days after the end of each quarter, we distribute all of our Available Cash, as defined below, to unitholders of record on the applicable record date, as determined by our general partner. In November 2012, we issued 1,912,663 common units to DCP Midstream, LLC as partial consideration for our 33.33% interest in the Eagle Ford system. In July 2012, we issued 1,536,098 common units to DCP Midstream, LLC as partial consideration for the Mont Belvieu fractionators. In July 2012, we closed a private placement of equity with a group of institutional investors in which we sold 4,989,802 common units at a price of $35.55 per unit, and received proceeds of $173.8 million net of offering costs. In June 2012, we filed a universal shelf registration statement on Form S-3 with the SEC with an unlimited offering amount, to replace an existing shelf registration statement. The universal shelf registration statement allows us to issue additional common units and debt securities. As of February 22, 2013, we have issued no equity securities under this registration statement. Our 2.50% 5-year Senior Notes were issued under this registration statement. In March 2012, we issued 5,148,500 common units at $47.42 per unit. We received proceeds of $234.0 million, net of offering costs.
In March 2012, we issued 1,000,417 common units to DCP Midstream, LLC as partial consideration for the remaining 66.67% interest in Southeast Texas. In February 2012, we issued 30,701 common units under our 2005 Long-Term Incentive Plan, or 2005 LTIP, to employees as compensation for their service. In January 2012, we issued 727,520 common units to DCP Midstream, LLC as partial consideration for the remaining 49.9% interest in East Texas. In August 2011, we entered into an equity distribution agreement with a financial institution, as sales agent. The agreement provides for the offer and sale from time to time, through our sales agent, common units having an aggregate offering amount of up to $150.0 million. As of December 31, 2012, approximately $69.5 million aggregate offering price of our common units remains available for sale pursuant to this equity distribution agreement. During the three months ended December 31, 2012, we issued 254,265 of our common units pursuant to the equity distribution agreement, and received proceeds of $10.0 million, net of commissions and offering costs of $0.7 million. During the year ended December 31, 2012, we issued 1,147,654 of our common units pursuant to the equity distribution agreement, and received proceeds of $47.4 million, net of commissions and offering costs of $1.6 million. During the year ended December 31, 2011, we issued 761,285 of our common units pursuant to this equity distribution agreement, and received proceeds of $30.2 million from the issuance of these common units, net of commissions and offering costs of $1.2 million. In March 2011, we issued 3,596,636 common units at $40.55 per unit. We received proceeds of $139.7 million, net of offering costs. In February 2011, we issued 8,399 common units, from our LTIP to employees as compensation for their service during 2010, 2009 and 2008. In November 2010, we issued 2,875,000 common units at $34.96 per unit. We received proceeds of $96.2 million, net of offering costs. In August 2010, we issued 2,990,000 common units at $32.57 per unit. We received proceeds of $93.1 million, net of offering costs. Definition of Available Cash — Available Cash, for any quarter, consists of all cash and cash equivalents on hand at the end of that quarter:
General Partner Interest and Incentive Distribution Rights — The general partner is entitled to a percentage of all quarterly distributions equal to its general partner interest of approximately 1% and limited partner interest of 1% as of December 31, 2012. The general partner has the right, but not the obligation, to contribute a proportionate amount of capital to us to maintain its current general partner interest. The incentive distribution rights held by the general partner entitle it to receive an increasing share of Available Cash when pre-defined distribution targets are achieved. Currently, our distribution to our general partner related to its incentive distribution rights is at the highest level. The general partner’s incentive distribution rights were not reduced as a result of our common unit issuances, and will not be reduced if we issue additional units in the future and the general partner does not contribute a proportionate amount of capital to us to maintain its current general partner interest. Please read the Distributions of Available Cash after the Subordination Period sections below for more details about the distribution targets and their impact on the general partner’s incentive distribution rights. Distributions of Available Cash after the Subordination Period — Our partnership agreement, after adjustment for the general partner’s relative ownership level, requires that we make distributions of Available Cash from operating surplus for any quarter after the subordination period, which ended in February 2009, in the following manner:
The following table presents our cash distributions paid in 2012, 2011 and 2010:
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- Definition
The entire disclosure for the formation, structure, control and ownership of the partnership. Disclosures related to accounts comprising partners' capital. Includes balances of general partners' capital account, limited partners' capital account, preferred partners' capital account and total partners' capital account and units outstanding; accumulated other comprehensive income; amount and nature of changes to amount of partner's capital and units outstanding by class, rights and privileges for each class of units; distribution policies and distributions paid by unit class; impact of and correction of an error in previously issued financial statements; limitations of partners' liability; redemption, conversion and distribution policies; and deferred compensation related to the issuance of units. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Equity-Based Compensation
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Dec. 31, 2012
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| Equity-Based Compensation |
Total compensation cost for equity-based arrangements was as follows:
On November 28, 2005, the board of directors of our General Partner adopted a Long-Term Incentive Plan, or the 2005 LTIP, for employees, consultants and directors of our General Partner and its affiliates who perform services for us. The 2005 LTIP provides for the grant of limited partner units, or LPUs, phantom units, unit options and substitute awards, and, with respect to unit options and phantom units, the grant of dividend equivalent rights, or DERs. Subject to adjustment for certain events, an aggregate of 850,000 LPUs may be issued and delivered pursuant to awards under the 2005 LTIP. Awards that are canceled or forfeited, or are withheld to satisfy the General Partner’s tax withholding obligations, are available for delivery pursuant to other awards. On February 15, 2012, the board of directors of our General Partner adopted a 2012 LTIP for employees, consultants and directors of our General Partner and its affiliates who perform services for us. The 2012 LTIP provides for the grant of phantom units and the grant of DERs. The phantom units consist of a notional unit based on the value of common units or shares of the Partnership, Spectra Energy, ConocoPhillips and Phillips 66. The LTIPs were administered by the compensation committee of the General Partner’s board of directors through 2012, and by the General Partner’s board of directors beginning in 2013. All awards are subject to cliff vesting. Prior to February 18, 2011, substantially all equity-based awards were accounted for as liability awards. Effective February 18, 2011, the Modification Date, we have the intent and ability to settle certain awards within our control in units and therefore modified the accounting for these awards. We classified them as equity awards based on their re-measured fair value. The fair value was determined based on the closing price of our common units on the Modification Date. Such modification resulted in a reclassification of $1.9 million from share-based compensation liability to additional paid-in capital on the Modification Date. Compensation expense on unvested equity awards as of the Modification Date is recognized ratably over each remaining vesting period. We account for other awards, which are subject to settlement in cash, as liability awards. Compensation expense on these awards is recognized ratably over each vesting period, and will be re-measured each reporting period for all awards outstanding until the units are vested. The fair value of all liability awards is determined based on the closing price of our common units at each measurement date. The reclassification of the affected awards did not impact our accounting for dividend equivalent rights as these instruments will continue to be settled in cash and therefore retain their share-based compensation liability classification. Performance Phantom Units — We have awarded Performance Phantom Units, or PPUs, pursuant to the LTIP to certain employees. PPUs generally vest in their entirety at the end of a three year performance period. The number of PPUs that will ultimately vest range, in value up to 200% of the outstanding PPUs, depending on the achievement of specified performance targets over three year performance periods. The final performance payout is determined by the board of directors of our General Partner. The DERs are paid in cash at the end of the performance period. Of the remaining PPUs outstanding at December 31, 2012, 3,633 units are expected to vest on December 31, 2013 and 6,377 units are expected to vest on December 31, 2014.
At December 31, 2012, there was approximately $0.2 million of unrecognized compensation expense related to the PPUs that is expected to be recognized over a weighted-average period of 2 years. The following table presents information related to the PPUs:
The estimate of PPUs that are expected to vest is based on highly subjective assumptions that could potentially change over time, including the expected forfeiture rate and achievement of performance targets. Therefore, the amount of unrecognized compensation expense noted above does not necessarily represent the value that will ultimately be realized in our consolidated statements of operations. The following table presents the fair value of units vested and the unit-based liabilities paid related to PPUs, including the related DERs:
Phantom Units — In conjunction with our initial public offering, in January 2006 our General Partner’s board of directors awarded phantom LPUs, or Phantom Units, to key employees, and to directors who are not officers or employees of affiliates of the General Partner. As part of their director fees, we granted 4,000 Phantom Units during each of the years ended December 31, 2012 and 2011, respectively, and 5,200 Phantom Units during the year ended December 31, 2010, to directors. All of these units vested in their respective grant years, and were settled in units. The DERs are paid in cash quarterly in arrears.
The following table presents information related to the Phantom Units:
The following table presents the fair value of units vested related to Phantom Units:
Restricted Phantom Units — Our General Partner’s board of directors awarded restricted phantom LPUs, or RPUs, to key employees under the LTIP. Of the remaining RPUs outstanding at December 31, 2012, 1,560 units are expected to vest on December 31, 2013 and 1,610 units are expected to vest on December 31, 2014. The DERs are paid in cash quarterly in arrears. At December 31, 2012, there was approximately $0.1 million of unrecognized compensation expense related to the RPUs that is expected to be recognized over a weighted-average period of 2 years. The following table presents information related to the RPUs:
The following table presents the fair value of units vested and the unit-based liabilities paid for unit based awards related to Restricted Phantom Units:
The estimate of RPUs that are expected to vest is based on highly subjective assumptions that could potentially change over time, including the expected forfeiture rate, which was estimated at 30% for units granted in 2012 and 20% for units granted in 2011. Therefore, the amount of unrecognized compensation expense noted above does not necessarily represent the value that will ultimately be realized in our consolidated statements of operations. |
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- Definition
The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Income Taxes
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Dec. 31, 2012
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| Income Taxes |
We are structured as a master limited partnership with sufficient qualifying income, which is a pass-through entity for federal income tax purposes. Accordingly, we had no federal income tax expense for the years ended December 31, 2012 and 2010. On December 30, 2010, we acquired all of the interests in Marysville Hydrocarbons Holdings, LLC, an entity that owned a taxable C-Corporation consolidated return group. We estimated $35.0 million of deferred tax liabilities resulting from built-in tax gains recognized in the transaction and recorded this as part of our preliminary acquisition accounting as of December 31, 2010. On January 4, 2011, we merged two wholly-owned subsidiaries of Marysville Hydrocarbons Holding, LLC and converted the combined entity’s organizational structure from a corporation to a limited liability company. This conversion to a limited liability company triggered the deferred tax liabilities resulting from built-in tax gains to become currently payable. Accordingly, the estimated $35.0 million of deferred tax liabilities at December 31, 2010 became currently payable on January 4, 2011. During 2011, we made federal and state tax payments of $29.3 million and $0.3 million, respectively, related to our estimated $35.0 million tax liability that resulted from our acquisition of Marysville. In 2011, the remaining $5.4 million estimated tax payable was reclassified to goodwill in our final acquisition accounting for the Marysville business combination. The State of Texas imposes a margin tax that is assessed at 1% of taxable margin apportioned to Texas. For the years ended December 31, 2011 and 2010, the state of Michigan imposed a business tax of 0.8% on gross receipts, and 4.95% of Michigan taxable income. The sum of the gross receipts and income tax was subject to a tax surcharge of 21.99%. The Michigan business tax was repealed for the year ended December 31, 2012.
Income tax expense consists of the following:
We had net long-term deferred tax liabilities of $3.4 million as of December 31, 2012 and 2011, included in other long-term liabilities on the consolidated balance sheets. These state deferred tax liabilities relate to our East Texas operations, and are primarily associated with depreciation related to property plant and equipment. Our effective tax rate differs from statutory rates, primarily due to being structured as a master limited partnership, which is a pass-through entity for federal income tax purposes, while being treated as a taxable entity in certain states |
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- Definition
The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Net Income or Loss per Limited Partner Unit
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Dec. 31, 2012
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| Net Income or Loss per Limited Partner Unit |
Our net income or loss is allocated to the general partner and the limited partners, including the holders of the subordinated units, through the date of subordinated conversion, in accordance with their respective ownership percentages, after allocating Available Cash generated during the period in accordance with our partnership agreement. Securities that meet the definition of a participating security are required to be considered for inclusion in the computation of basic earnings per unit using the two-class method. Under the two-class method, earnings per unit is calculated as if all of the earnings for the period were distributed under the terms of the partnership agreement, regardless of whether the general partner has discretion over the amount of distributions to be made in any particular period, whether those earnings would actually be distributed during a particular period from an economic or practical perspective, or whether the general partner has other legal or contractual limitations on its ability to pay distributions that would prevent it from distributing all of the earnings for a particular period. These required disclosures do not impact our overall net income or loss or other financial results; however, in periods in which aggregate net income exceeds our Available Cash it will have the impact of reducing net income per LPU. Basic and diluted net income or loss per LPU is calculated by dividing net income or loss allocable to limited partners, by the weighted-average number of outstanding LPUs during the year. Diluted net income or loss per limited partner unit is computed based on the weighted average number of units plus the effect of dilutive potential units outstanding during the period using the two-class method. Dilutive potential units include outstanding Performance Units, Phantom Units and Restricted Units. The dilutive effect of unit-based awards was 33,043 and 64,286 equivalent units during the years ended December 31, 2012 and 2011. |
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- Definition
The entire disclosure for earnings per share. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Commitments and Contingent Liabilities
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Dec. 31, 2012
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| Commitments and Contingent Liabilities |
Litigation Prospect — During the fourth quarter of 2011, we received a claim for arbitration (the “Claim”) filed with the American Arbitration Association by Prospect Street Energy, LLC and Prospect Street Ventures I, LLC (together, the “Claimants”) against EE Group, LLC (“EE Group”) and a number of other parties that previously owned, directly or indirectly, our Marysville NGL storage facility (collectively, the “Respondents”). EE Group is our indirect subsidiary which we acquired in connection with our acquisition of Marysville Hydrocarbons Holdings, LLC (“Marysville”) on December 30, 2010 (the “Acquisition”). The Claim involves actions taken and time periods prior to our ownership of EE Group and Marysville, and includes several causes of action including claims of civil conspiracy, breach of fiduciary duty and fraud. We acquired a 90% interest in Marysville from Dart Energy Corporation, a 5% interest in Marysville from Prospect Street Energy, LLC and a 100% interest in EE Group, which owned the remaining 5% interest in Marysville. The Claimants seek, from the Respondents collectively, alleged actual, punitive and treble damages and disgorgement of profits, as well as fees and costs. The purchase agreements for the Acquisition contain indemnification and other provisions that may provide some protection to us for any breach of the representations, warranties and covenants made by the sellers in the Acquisition. In August 2012, we entered into a Settlement Agreement with the Claimants in which the Claimants have agreed that if an award is issued to the Claimants in the arbitration, the Claimants will not attempt to recover such an award from us. Notwithstanding that agreement, this matter is subject to the uncertainties inherent in any litigation, and the ultimate outcome of this matter may not be known for an extended period of time. Other — We are not a party to any other significant legal proceedings, but are a party to various administrative and regulatory proceedings and commercial disputes that have arisen in the ordinary course of our business. Management currently believes that the ultimate resolution of the foregoing matters, taken as a whole, and after consideration of amounts accrued, insurance coverage or other indemnification arrangements, will not have a material adverse effect on our consolidated results of operations, financial position, or cash flow. Insurance — We renewed our insurance policies in May, June and July 2012 for the 2012-2013 insurance year. We contract with third party and affiliate insurers for: (1) automobile liability insurance for all owned, non-owned and hired vehicles; (2) general liability insurance; (3) excess liability insurance above the established primary limits for general liability and automobile liability insurance; and (4) property insurance, which covers replacement value of real and personal property and includes business interruption/extra expense. These renewals have not resulted in any material change to the premiums we are contracted to pay in the 2012-2013 insurance year compared with the 2011-2012 insurance year. We are jointly insured with DCP Midstream, LLC for directors and officers insurance covering our directors and officers for acts related to our business activities. All coverage is subject to certain limits and deductibles, the terms and conditions of which are common for companies that are of similar size to us and with similar types of operations. Our insurance on Discovery for the 2012-2013 insurance year includes general and excess liability, onshore property damage, including named windstorm and business interruption, and offshore non-wind property and business interruption insurance. The availability of offshore named windstorm property and business interruption insurance has been significantly reduced over the past few years as a result of higher industry-wide damage claims. Additionally, the named windstorm property and business interruption insurance that is available comes at uneconomic premium levels, higher deductibles and lower coverage limits. As such, Discovery has elected to not purchase offshore named windstorm property and business interruption insurance coverage for the 2012-2013 insurance year. Environmental — The operation of pipelines, plants and other facilities for gathering, transporting, processing, treating, or storing natural gas, NGLs and other products is subject to stringent and complex laws and regulations pertaining to health, safety and the environment. As an owner or operator of these facilities, we must comply with United States laws and regulations at the federal, state and local levels that relate to air and water quality, hazardous and solid waste management and disposal, and other environmental matters. The cost of planning, designing, constructing and operating pipelines, plants, and other facilities must incorporate compliance with environmental laws and regulations and safety standards. Failure to comply with these laws and regulations may trigger a variety of administrative, civil and potentially criminal enforcement measures, including citizen suits, which can include the assessment of monetary penalties, the imposition of remedial requirements, and the issuance of injunctions or restrictions on operation. Management believes that, based on currently known information, compliance with these laws and regulations will not have a material adverse effect on our consolidated results of operations, financial position or cash flows. Indemnification — DCP Midstream, LLC has indemnified us for certain potential environmental claims, losses and expenses associated with the operation of the assets of certain of our predecessors. Other Commitments and Contingencies — We utilize assets under operating leases in several areas of operation. Consolidated rental expense, including leases with no continuing commitment, totaled $12.9 million, $13.1 million and $12.8 million for the years ended December 31, 2012, 2011 and 2010, respectively. Rental expense for leases with escalation clauses is recognized on a straight line basis over the initial lease term. Minimum rental payments under our various operating leases in the year indicated are as follows at December 31, 2012:
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| X | ||||||||||
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- Definition
The entire disclosure for commitments and contingencies. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Business Segments
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Dec. 31, 2012
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| Business Segments |
Our operations are located in the United States and are organized into three reporting segments: Natural Gas Services; NGL Logistics; and Wholesale Propane Logistics. Natural Gas Services — Our Natural Gas Services segment provides services that include gathering, compressing, treating, processing, transporting and storing natural gas. The segment consists of our Northern Louisiana system, our Southern Oklahoma system, our Wyoming system, our Michigan system, our Southeast Texas system, our East Texas system, our 75% interest in the Colorado system, our 40% interest in Discovery, and our 33.33% interest in the Eagle Ford system. NGL Logistics — Our NGL Logistics segment provides services that include transportation, storage and fractionation of NGLs. The segment consists of the Seabreeze and Wilbreeze intrastate NGL pipelines, the Wattenberg and Black Lake interstate NGL pipelines, our 10% interest in the Texas Express NGL pipeline, the NGL storage facility in Michigan, the DJ Basin NGL fractionators in Colorado, our 12.5% interest in the Mont Belvieu Enterprise fractionator, and our 20% interest in the Mont Belvieu 1 fractionator. Wholesale Propane Logistics — Our Wholesale Propane Logistics segment provides services that include the receipt of propane by pipeline, rail or ship to our terminals that deliver the product to distributors. The segment consists of six owned rail terminals, one owned marine terminal, one leased marine terminal, one pipeline terminal and access to several open-access pipeline terminals. These segments are monitored separately by management for performance against our internal forecast and are consistent with internal financial reporting. These segments have been identified based on the differing products and services, regulatory environment and the expertise required for these operations. Gross margin is a performance measure utilized by management to monitor the business of each segment.
The following tables set forth our segment information: Year Ended December 31, 2012:
Year Ended December 31, 2011:
Year Ended December 31, 2010:
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- Definition
The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Supplemental Cash Flow Information
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Dec. 31, 2012
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| Supplemental Cash Flow Information |
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- Definition
The entire disclosure for supplemental cash flow activities, including cash, noncash, and part noncash transactions, for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Quarterly Financial Data
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Dec. 31, 2012
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| Quarterly Financial Data |
Our consolidated results of operations by quarter for the years ended December 31, 2012 and 2011 were as follows (millions, except per unit amounts):
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- Definition
The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Supplementary Information - Condensed Consolidating Financial Information
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Dec. 31, 2012
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| Supplementary Information - Condensed Consolidating Financial Information |
The following condensed consolidating financial information presents the results of operations, financial position and cash flows of DCP Midstream Partners, LP, or parent guarantor, DCP Midstream Operating LP, or subsidiary issuer, which is a 100% owned subsidiary, and non-guarantor subsidiaries, as well as the consolidating adjustments necessary to present DCP Midstream Partners, LP’s results on a consolidated basis. In conjunction with the universal shelf registration statements on Form S-3 filed with the SEC on May 26, 2010 and June 14, 2012, the parent guarantor has agreed to fully and unconditionally guarantee securities of the subsidiary issuer. For the purpose of the following financial information, investments in subsidiaries are reflected in accordance with the equity method of accounting. The financial information may not necessarily be indicative of results of operations, cash flows, or financial position had the subsidiaries operated as independent entities.
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- Definition
Condensed Financial Statements Disclosure [Text Block] No definition available.
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Valuation and Qualifying Accounts and Reserves
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Dec. 31, 2012
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| Valuation and Qualifying Accounts and Reserves |
Our valuation and qualifying accounts and reserves for the years ended December 31, 2012, 2011 and 2010 are as follows:
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- Definition
The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Subsequent Events
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Dec. 31, 2012
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| Subsequent Events |
On January 28, 2013, we announced that the board of directors of DCP Midstream GP, LLC declared a quarterly distribution of $0.69 per unit, which was paid on February 14, 2013, to unitholders of record on February 7, 2013. On February 27, 2013, we entered into an agreement with DCP Midstream, LLC to acquire an additional 46.67% interest in DCP SC Texas GP, or the Eagle Ford system, and a fixed price commodity derivative hedge for a three-year period for aggregate consideration of $626.0 million, subject to customary working capital and other purchase price adjustments. We will also contribute our proportionate share of the capital spent to date to the Eagle Ford system for the construction of the Goliad plant, plus an incremental payment of $23.3 million. DCP Midstream, LLC will also provide a twenty-seven month direct commodity price hedge for our additional 46.67% interest in the project. The transaction is expected to close in March 2013. |
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- Definition
The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business. No definition available.
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Summary of Significant Accounting Policies (Policies)
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Dec. 31, 2012
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| Noncontrolling Interest | The consolidated financial statements include the accounts of the Partnership and all majority-owned subsidiaries where we have the ability to exercise control. Investments in greater than 20% owned affiliates that are not variable interest entities and where we do not have the ability to exercise control, and investments in less than 20% owned affiliates where we have the ability to exercise significant influence, are accounted for using the equity method. All intercompany balances and transactions have been eliminated. |
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| Use of Estimates | Use of Estimates — Conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and notes. Although these estimates are based on management’s best available knowledge of current and expected future events, actual results could differ from those estimates. |
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| Cash and Cash Equivalents | Cash and Cash Equivalents — We consider investments in highly liquid financial instruments purchased with an original stated maturity of 90 days or less to be cash equivalents. |
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| Inventories | Inventories — Inventories, which consist primarily of NGLs and natural gas, are recorded at the lower of weighted-average cost or market value. Transportation costs are included in inventory. |
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| Property, Plant and Equipment | Property, Plant and Equipment — Property, plant and equipment are recorded at historical cost. The cost of maintenance and repairs, which are not significant improvements, are expensed when incurred. Depreciation is computed using the straight-line method over the estimated useful lives of the assets. |
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| Goodwill and Intangible Assets | Goodwill and Intangible Assets — Goodwill is the cost of an acquisition less the fair value of the net assets of the acquired business. We perform an annual impairment test of goodwill in the third quarter, and update the test during interim periods when we believe events or changes in circumstances indicate that we may not be able to recover the carrying value of a reporting unit. We primarily use a discounted cash flow analysis to perform the assessment. Key assumptions in the analysis include the use of an appropriate discount rate, terminal year multiples, and estimated future cash flows including an estimate of operating and general and administrative costs. In estimating cash flows, we incorporate current market information, as well as historical and other factors, into our forecasted commodity prices. For certain reporting units, we may elect to first assess qualitative factors to determine whether it is more likely than not that the fair value of our reporting units is less than the carrying value. Intangible assets consist primarily of customer contracts, including commodity purchase, transportation and processing contracts and related relationships. These intangible assets are amortized on a straight-line basis over the period of expected future benefit. Intangible assets are removed from the gross carrying amount and the total of accumulated amortization in the period in which they become fully amortized. |
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| Long-Lived Assets | Long-Lived Assets — We periodically evaluate whether the carrying value of long-lived assets has been impaired when circumstances indicate the carrying value of those assets may not be recoverable. This evaluation is based on undiscounted cash flow projections. The carrying amount is not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset. We consider various factors when determining if these assets should be evaluated for impairment, including but not limited to:
If the carrying value is not recoverable, the impairment loss is measured as the excess of the asset’s carrying value over its fair value. We assess the fair value of long-lived assets using commonly accepted techniques, and may use more than one method, including, but not limited to, recent third party comparable sales and discounted cash flow models. Significant changes in market conditions resulting from events such as the condition of an asset or a change in management’s intent to utilize the asset would generally require management to reassess the cash flows related to the long-lived assets. |
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| Asset Retirement Obligations | Asset Retirement Obligations — Our asset retirement obligations relate primarily to the retirement of various gathering pipelines and processing facilities, obligations related to right-of-way easement agreements, and contractual leases for land use. We adjust our asset retirement obligation each quarter for any liabilities incurred or settled during the period, accretion expense and any revisions made to the estimated cash flows. Asset retirement obligations associated with tangible long-lived assets are recorded at fair value in the period in which they are incurred, if a reasonable estimate of fair value can be made, and added to the carrying amount of the associated asset. This additional carrying amount is then depreciated over the life of the asset. The liability is determined using a risk free interest rate, and increases due to the passage of time based on the time value of money until the obligation is settled. |
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| Investments in Unconsolidated Affiliates | Investments in Unconsolidated Affiliates — We use the equity method to account for investments in greater than 20% owned affiliates that are not variable interest entities and where we do not have the ability to exercise control, and investments in less than 20% owned affiliates where we have the ability to exercise significant influence.
We evaluate our investments in unconsolidated affiliates for impairment whenever events or changes in circumstances indicate that the carrying value of such investments may have experienced a decline in value. When there is evidence of loss in value, we compare the estimated fair value of the investment to the carrying value of the investment to determine whether impairment has occurred. We assess the fair value of our investments in unconsolidated affiliates using commonly accepted techniques, and may use more than one method, including, but not limited to, recent third party comparable sales and discounted cash flow models. If the estimated fair value is considered to be permanently less than the carrying value, the excess of the carrying value over the estimated fair value is recognized as an impairment loss. |
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| Unamortized Debt Expense | Unamortized Debt Expense — Expenses incurred with the issuance of long-term debt are amortized over the term of the debt using the effective interest method. These expenses are recorded on the consolidated balance sheet as other long-term assets. |
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| Accounting for Risk Management Activities and Financial Instruments | Accounting for Risk Management Activities and Financial Instruments — Non-trading energy commodity derivatives are designated as either a hedge of a forecasted transaction or future cash flow (cash flow hedge), a hedge of a recognized asset, liability or firm commitment (fair value hedge), or normal purchases or normal sales. The remaining non-trading derivatives, which are related to asset-based activities for which the normal purchase or normal sale exception is not elected, are recorded at fair value in the consolidated balance sheets as unrealized gains or unrealized losses in derivative instruments, with changes in the fair value recognized in the consolidated statements of operations. For each derivative, the accounting method and presentation of gains and losses or revenue and expense in the consolidated statements of operations are as follows:
Cash Flow and Fair Value Hedges — For derivatives designated as a cash flow hedge or a fair value hedge, we maintain formal documentation of the hedge. In addition, we formally assess both at the inception of the hedging relationship and on an ongoing basis, whether the hedge contract is highly effective in offsetting changes in cash flows or fair values of hedged items. All components of each derivative gain or loss are included in the assessment of hedge effectiveness, unless otherwise noted. The fair value of a derivative designated as a cash flow hedge is recorded in the consolidated balance sheets as unrealized gains or unrealized losses on derivative instruments. The effective portion of the change in fair value of a derivative designated as a cash flow hedge is recorded in partners’ equity in accumulated other comprehensive income, or AOCI, and the ineffective portion is recorded in the consolidated statements of operations. During the period in which the hedged transaction impacts earnings, amounts in AOCI associated with the hedged transaction are reclassified to the consolidated statements of operations in the same accounts as the item being hedged. Hedge accounting is discontinued prospectively when it is determined that the derivative no longer qualifies as an effective hedge, or when it is probable that the hedged transaction will not occur. When hedge accounting is discontinued because the derivative no longer qualifies as an effective hedge, the derivative is subject to the mark-to-market accounting method prospectively. The derivative continues to be carried on the consolidated balance sheets at its fair value; however, subsequent changes in its fair value are recognized in current period earnings. Gains and losses related to discontinued hedges that were previously accumulated in AOCI will remain in AOCI until the hedged transaction impacts earnings, unless it is probable that the hedged transaction will not occur, in which case, the gains and losses that were previously deferred in AOCI will be immediately recognized in current period earnings. The fair value of a derivative designated as a fair value hedge is recorded for balance sheet purposes as unrealized gains or unrealized losses on derivative instruments. We recognize the gain or loss on the derivative instrument, as well as the offsetting loss or gain on the hedged item in earnings in the current period. All derivatives designated and accounted for as fair value hedges are classified in the same category as the item being hedged in the results of operations. Valuation — When available, quoted market prices or prices obtained through external sources are used to determine a contract’s fair value. For contracts with a delivery location or duration for which quoted market prices are not available, fair value is determined based on pricing models developed primarily from historical relationships with quoted market prices and the expected relationship with quoted market prices. Values are adjusted to reflect the credit risk inherent in the transaction as well as the potential impact of liquidating open positions in an orderly manner over a reasonable time period under current conditions. Changes in market prices and management estimates directly affect the estimated fair value of these contracts. Accordingly, it is reasonably possible that such estimates may change in the near term. |
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| Revenue Recognition | Revenue Recognition — We generate the majority of our revenues from gathering, compressing, treating, processing, transporting, storing and selling of natural gas, and producing, fractionating, transporting, storing and selling NGLs. Once natural gas is produced from wells, producers then seek to deliver the natural gas and its components to end-use markets. We realize revenues either by selling the residue natural gas and NGLs, or by receiving fees. We obtain access to commodities and provide our midstream services principally under contracts that contain a combination of one or more of the following arrangements:
Our marketing of natural gas and NGLs consists of physical purchases and sales, as well as positions in derivative instruments. We recognize revenues for sales and services under the four revenue recognition criteria, as follows:
We generally report revenues gross in the consolidated statements of operations, as we typically act as the principal in these transactions, take custody to the product, and incur the risks and rewards of ownership. We recognize revenues for non-trading commodity derivative activity net in the consolidated statements of operations as gains and losses from commodity derivative activity. These activities include mark-to-market gains and losses on energy trading contracts and the settlement of financial or physical energy trading contracts. Quantities of natural gas or NGLs over-delivered or under-delivered related to imbalance agreements with customers, producers or pipelines are recorded monthly as accounts receivable or accounts payable using current market prices or the weighted-average prices of natural gas or NGLs at the plant or system. These balances are settled with deliveries of natural gas or NGLs, or with cash. |
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| Significant Customers | Significant Customers — There were no third party customers that accounted for more than 10% of total operating revenues for the years ended December 31, 2012, 2011 and 2010. There was one third party customer that accounted for approximately 20% of revenues of the Wholesale Propane Logistics segment for the year ended December 31, 2012, and approximately 17% of total operating revenues for the years ended December 31, 2011 and 2010, respectively. We also had significant transactions with affiliates. |
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| Environmental Expenditures | Environmental Expenditures — Environmental expenditures are expensed or capitalized as appropriate, depending upon the future economic benefit. Expenditures that relate to an existing condition caused by past operations and that do not generate current or future revenue are expensed. Liabilities for these expenditures are recorded on an undiscounted basis when environmental assessments and/or clean-ups are probable and the costs can be reasonably estimated. Environmental liabilities as of December 31, 2012 and 2011, included in the consolidated balance sheets as other current liabilities amounted to $0.8 million and $0.8 million, respectively, and as other long-term liabilities amounted to $1.0 million and $1.2 million, respectively. |
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| Equity-Based Compensation | Equity-Based Compensation — Equity classified stock-based compensation cost is measured at fair value, based on the closing common unit price at grant date, and is recognized as expense over the vesting period. Liability classified stock-based compensation cost is remeasured at each reporting date at fair value, based on the closing common unit price, and is recognized as expense over the requisite service period. Compensation expense for awards with graded vesting provisions is recognized on a straight-line basis over the requisite service period of each separately vesting portion of the award. Awards granted to non-employees for acquiring, or in conjunction with selling, goods and services are measured at the estimated fair value of the goods or services, or the fair value of the award, whichever is more reliably measured. |
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| Allowance for Doubtful Accounts | Allowance for Doubtful Accounts — Management estimates the amount of required allowances for the potential non-collectability of accounts receivable generally based upon the number of days past due, past collection experience and consideration of other relevant factors. However, past experience may not be indicative of future collections and therefore additional charges could be incurred in the future to reflect differences between estimated and actual collections. |
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| Income Taxes | Income Taxes — We are structured as a master limited partnership which is a pass-through entity for federal income tax purposes. Our income tax expense includes certain jurisdictions, including state, local, franchise and margin taxes of the master limited partnership and subsidiaries. We follow the asset and liability method of accounting for income taxes. Under this method, deferred income taxes are recognized for the tax consequences of temporary differences between the financial statement carrying amounts and the tax basis of the assets and liabilities. Our taxable income or loss, which may vary substantially from the net income or loss reported in the consolidated statements of operations, is proportionately included in the federal returns of each partner. |
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| Net Income or Loss Per Limited Partner Unit | Net Income or Loss per Limited Partner Unit — Basic and diluted net income or loss per limited partner unit, or LPU, is calculated by dividing net income or loss allocable to limited partners, by the weighted-average number of outstanding LPUs during the period. Diluted net income or loss per limited partner unit is computed based on the weighted average number of units plus the effect of dilutive potential units outstanding during the period using the two-class method. |
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| Capitalized Interest | Capitalized Interest — We capitalize interest during construction on major projects. Interest is calculated on the monthly outstanding capital balance and ceases in the month that the asset is placed into service. We also capitalize interest on our equity method investments which are devoting substantially all efforts to establishing a new business and have not yet begun planned principal operations. Capitalization ceases when the investee commences planned principal operations. The rates used to calculate capitalized interest are the weighted-average cost of debt, including the impact of interest rate swaps. |
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| Commodity Price Risk | Cash Flow Protection Activities — We are exposed to the impact of market fluctuations in the prices of natural gas, NGLs and condensate as a result of our gathering, processing, sales and storage activities. For gathering, processing and storage services, we may receive cash or commodities as payment for these services, depending on the contract type. We enter into derivative financial instruments to mitigate a portion of the risk of weakening natural gas, NGL and condensate prices associated with our gathering, processing and sales activities, thereby stabilizing our cash flows. We have mitigated a portion of our expected commodity price risk associated with our gathering, processing and sales activities through 2016 with commodity derivative instruments. Our commodity derivative instruments used for our hedging program are a combination of direct NGL product, crude oil, and natural gas hedges. Due to the limited liquidity and tenor of the NGL derivative market, we have used crude oil swaps and costless collars to mitigate a portion of our commodity price exposure to NGLs. Historically, prices of NGLs have generally been related to crude oil prices, however there are periods of time when NGL pricing may be at a greater discount to crude oil, resulting in additional exposure to NGL commodity prices. During 2012, the relationship of NGLs to crude oil has been lower than historical relationships, however a significant amount of our NGL hedges from 2012 through 2015 are direct product hedges. When our crude oil swaps become short-term in nature, we have periodically converted certain crude oil derivatives to NGL derivatives by entering into offsetting crude oil swaps while adding NGL swaps. Our crude oil and NGL transactions are primarily accomplished through the use of forward contracts that effectively exchange our floating price risk for a fixed price. We also utilize crude oil costless collars that minimize our floating price risk by establishing a fixed price floor and a fixed price ceiling. However, the type of instrument that we use to mitigate a portion of our risk may vary depending upon our risk management objective. These transactions are not designated as hedging instruments for accounting purposes and the change in fair value is reflected within our consolidated statements of operations as a gain or a loss on commodity derivative activity.
Our Wholesale Propane Logistics segment is generally designed to establish stable margins by entering into supply arrangements that specify prices based on established floating price indices and by entering into sales agreements that provide for floating prices that are tied to our variable supply costs plus a margin. To the extent possible, we match the pricing of our supply portfolio to our sales portfolio in order to lock in value and reduce our overall commodity price risk. However, to the extent that we carry propane inventories or our sales and supply arrangements are not aligned, we are exposed to market variables and commodity price risk. We manage the commodity price risk of our supply portfolio and sales portfolio with both physical and financial transactions, including fixed price sales. While the majority of our sales and purchases in this segment are index-based, occasionally, we may enter into fixed price sales agreements in the event that a propane distributor desires to purchase propane from us on a fixed price basis. In such cases, we may manage this risk with derivatives that allow us to swap our fixed price risk to market index prices that are matched to our market index supply costs. In addition, we may use financial derivatives to manage the value of our propane inventories. These transactions are not designated as hedging instruments for accounting purposes and any change in fair value is reflected in the current period within our consolidated statements of operations as a gain or loss on commodity derivative activity. Our portfolio of commodity derivative activity is primarily accounted for using the mark-to-market method of accounting, whereby changes in fair value are recorded directly to the consolidated statements of operations; however, depending upon our risk profile and objectives, in certain limited cases, we may execute transactions that qualify for the hedge method of accounting. Natural Gas Storage and Pipeline Asset Based Commodity Derivative Program — Our natural gas storage and pipeline assets are exposed to certain risks including changes in commodity prices. We manage commodity price risk related to our natural gas storage and pipeline assets through our commodity derivative program. The commercial activities related to our natural gas storage and pipeline assets primarily consist of the purchase and sale of gas and associated time spreads and basis spreads. A time spread transaction is executed by establishing a long gas position at one point in time and establishing an equal short gas position at a different point in time. Time spread transactions allow us to lock in a margin supported by the injection, withdrawal, and storage capacity of our natural gas storage assets. We may execute basis spread transactions to mitigate the risk of sale and purchase price differentials across our system. A basis spread transaction allows us to lock in a margin on our physical purchases and sales of gas, including injections and withdrawals from storage. We typically use swaps to execute these transactions, which are not designated as hedging instruments and are recorded at fair value with changes in fair value recorded in the current period consolidated statements of operations. While gas held in our storage locations is recorded at the lower of average cost or market, the derivative instruments that are used to manage our storage facilities are recorded at fair value and any changes in fair value are currently recorded in our consolidated statements of operations. Even though we may have economically hedged our exposure and locked in a future margin, the use of lower-of-cost-or-market accounting for our physical inventory and the use of mark-to-market accounting for our derivative instruments may subject our earnings to market volatility. |
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Noncontrolling Interests [Member]
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| Noncontrolling Interest | Noncontrolling Interest — Noncontrolling interest represents any third party or affiliate interest in non-wholly-owned entities that we consolidate. For financial reporting purposes, the assets and liabilities of these entities are consolidated with those of our own, with any third party or affiliate interest in our consolidated balance sheet amounts shown as noncontrolling interest in equity. Distributions to and contributions from noncontrolling interests represent cash payments to and cash contributions from, respectively, such third party and affiliate investors. |
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- Definition
Capitalized Interest Policy [Text Block] No definition available.
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- Definition
Receivables Trade And Other Accounts Receivable Allowance For Doubtful Accounts Policy [Text Block] No definition available.
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- Definition
Disclosure of accounting policy for determining amounts to accrue and charge against earnings so as to satisfy legal obligations associated with the retirement (through sale, abandonment, recycling, or disposal in some other manner) of a tangible long-lived asset that result from the acquisition, construction, or development and (or) the normal operation of a long-lived asset. This accounting policy disclosure excludes obligations arising 1) in connection with leased property, whether imposed by a lease agreement or by a party other than the lessor, that meet the definition of either minimum lease payments or contingent rentals; 2) solely from a plan to sell or otherwise dispose of a long-lived asset and 3) from certain environmental remediation liabilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Disclosure of accounting policy for salaries, bonuses, incentive awards, postretirement and postemployment benefits granted to employees, including equity-based arrangements; discloses methodologies for measurement, and the bases for recognizing related assets and liabilities and recognizing and reporting compensation expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Disclosure of accounting policy for subsidiaries or other investments that are consolidated, including the accounting treatment for intercompany accounts or transactions and any noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Disclosure of accounting policy for costs incurred to obtain or issue debt, the effects of refinancings, method of amortizing deferred financing costs and original issue discount, and classifications of debt on the balance sheet. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Disclosure of accounting policy for its derivative instruments and hedging activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Disclosure of accounting policy for derivatives entered into for trading purposes and those entered into for purposes other than trading including where and when derivative financial instruments and derivative commodity instruments and their related gains or losses are reported in the entity's statements of financial position, cash flows, and results of operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Disclosure of accounting policy for the equity method of accounting for investments in common stock or other interests including unconsolidated subsidiaries, corporate joint ventures, noncontrolling interests in real estate ventures, limited partnerships, and limited liability companies. The accounting policy may include information such as: (1) initially recording an investment in the stock of an investee at cost; (2) adjusting the carrying amount of the investment to recognize the investor's share of the earnings or losses of the investee after the date of acquisition; and (3) adjustments to reflect the investor's share of changes in the investee's capital (dividends). This disclosure may also include a detailed description of the policy for determining the amount of equity method losses recognized after an investment has been reduced to zero as a result of previous losses, reasons for not using the equity method when the investor company owns 20 percent or more of the voting stock of the investee's company (including identification of the significant investee), reasons for using the equity method when the ownership percentage is less than 20 percent, and discussion of recognition of equity method losses when an investor's total investment in an investee includes, in addition to an investment in common stock, other investments such as preferred stock and loans to the investee. An entity also may describe how such investments are assessed for impairment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Disclosure of accounting policy for goodwill. This accounting policy also may address how an entity assesses and measures impairment of goodwill, how reporting units are determined, how goodwill is allocated to such units, and how the fair values of the reporting units are determined. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Disclosure of accounting policy for recognizing and measuring the impairment of long-lived assets. An entity also may disclose its accounting policy for long-lived assets to be sold. This policy excludes goodwill and intangible assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Disclosure of accounting policy for major classes of inventories, bases of stating inventories (for example, lower of cost or market), methods by which amounts are added and removed from inventory classes (for example, FIFO, LIFO, or average cost), loss recognition on impairment of inventories, and situations in which inventories are stated above cost. If inventory is carried at cost, this disclosure includes the nature of the cost elements included in inventory. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Disclosure of accounting policy for major customers. Major customers are those that the loss of such customers would have a material adverse effect on the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Disclosure of accounting policy for property, plant and equipment which may include the basis of such assets, depreciation methods used and estimated useful lives, the entity's capitalization policy, including its accounting treatment for costs incurred for repairs and maintenance activities, whether such asset balances include capitalized interest and the method by which such is calculated, how disposals of such assets are accounted for and how impairment of such assets is assessed and recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Disclosure of accounting policy for liabilities for remediation of environmental matters. The accounting policy may specify the conditions under which rate actions of a regulator provide reasonable assurance of the existence of an asset pertaining thereto. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Disclosure of accounting policy for revenue recognition. If the entity has different policies for different types of revenue transactions, the policy for each material type of transaction is generally disclosed. If a sales transaction has multiple element arrangements (for example, delivery of multiple products, services or the rights to use assets) the disclosure may indicate the accounting policy for each unit of accounting as well as how units of accounting are determined and valued. The disclosure may encompass important judgment as to appropriateness of principles related to recognition of revenue. The disclosure also may indicate the entity's treatment of any unearned or deferred revenue that arises from the transaction. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Summary of Significant Accounting Policies (Tables)
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Dec. 31, 2012
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| Schedule of Derivatives, Accounting Method and Presentation | For each derivative, the accounting method and presentation of gains and losses or revenue and expense in the consolidated statements of operations are as follows:
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- Definition
Schedule Of Derivatives Reporting Of Derivative Activity [Table Text Block] No definition available.
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Acquisitions (Tables)
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Dec. 31, 2012
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Crossroads System [Member]
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| Schedule of Preliminary Purchase Price Allocation | The following table summarizes the aggregate consideration and fair value of the identifiable assets acquired and liabilities assumed in the acquisition of Crossroads as of the acquisition date:
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| Schedule of Unaudited Pro Forma Information for Condensed Consolidated Statement of Operations | The following tables present unaudited supplemental pro forma information for the consolidated statement of operations for the years ended December 31, 2012 and 2011, as if the acquisition of Crossroads had occurred at the beginning of the earliest period presented.
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Income Statement [Member]
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| Schedule of Impact on Financial Statements Due to Acquisition | The following tables present the previously reported consolidated statements of operations for the years ended December 31, 2011 and 2010, adjusted for the acquisition of the remaining 66.67% interest in Southeast Texas from DCP Midstream, LLC: Year Ended December 31, 2011
Year Ended December 31, 2010
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Balance Sheet [Member]
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| Schedule of Impact on Financial Statements Due to Acquisition | The following table presents the previously reported December 31, 2011 consolidated balance sheet, adjusted for the acquisition of the remaining 66.67% interest in Southeast Texas from DCP Midstream, LLC: As of December 31, 2011
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- Definition
Impact Of Adjustments Related To Transaction Among Entities Under Common Control [Table Text Block] No definition available.
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- Definition
Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Tabular disclosure of all of the fair values of the purchase price and assets and liabilities acquired in a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Agreements and Transactions with Affiliates (Tables)
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Dec. 31, 2012
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| Schedule of Fees Incurred and Other Fees Paid | Following is a summary of the fees we incurred under the Omnibus Agreement as well as other fees paid to DCP Midstream, LLC:
|
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| Summary of Transactions with Affiliates | The following table summarizes the transactions with affiliates:
We had balances with affiliates as follows:
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| X | ||||||||||
|
- Definition
Schedule of fees paid to Parent. No definition available.
|
| X | ||||||||||
|
- Definition
Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. No definition available.
|
|
Inventories (Tables)
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12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2012
|
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| Schedule of Inventories | Inventories were as follows:
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| X | ||||||||||
|
- Definition
Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Property, Plant and Equipment (Tables)
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12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2012
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| Classification of Property, Plant and Equipment | A summary of property, plant and equipment by classification is as follows:
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| X | ||||||||||
|
- Definition
Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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|
Goodwill and Intangible Assets (Tables)
|
12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2012
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| Changes in Carrying Amount of Goodwill | The carrying amount of goodwill is as follows:
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| Schedule of Intangible Assets | transportation and processing contracts, and related relationships. The gross carrying amount and accumulated amortization of these intangible assets are included in the accompanying consolidated balance sheets as intangible assets, net, and are as follows:
|
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| Estimated Future Amortization for Intangible Assets | Estimated future amortization for these intangible assets is as follows:
|
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| X | ||||||||||
|
- Definition
Tabular disclosure of the estimated aggregate amortization expense for intangible assets subject to amortization for each of the five succeeding fiscal years. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Definition
Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Definition
Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Investments in Unconsolidated Affiliates (Tables)
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12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2012
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| Investments in Unconsolidated Affiliates | The following table summarizes our investments in unconsolidated affiliates:
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| Earnings from Investments in Unconsolidated Affiliates | Earnings from investments in unconsolidated affiliates were as follows:
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| Equity Method Investment Summarized Financial Information, Statement of Operations | The following summarizes combined financial information of our investments in unconsolidated affiliates:
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| Equity Method Investment Summarized Financial Information, Balance Sheet |
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| X | ||||||||||
|
- Definition
Equity Method Investment Summarized Financial Information, Balance Sheet [Table Text Block] No definition available.
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| X | ||||||||||
|
- Definition
Schedule of Earnings from Investment in Unconsolidated Affiliates [Table Text Block] No definition available.
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| X | ||||||||||
|
- Definition
Equity Method Investment Summarized Financial Information [Table Text Block] No definition available.
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| X | ||||||||||
|
- Definition
Tabular disclosure of equity method investments in common stock. The disclosure may include: (a) the name of each investee or group of investments for which combined disclosure is appropriate, (2) the percentage ownership of common stock, (3) the difference, if any, between the carrying amount of an investment and the value of the underlying equity in the net assets and the accounting treatment of difference, if any, and (4) the aggregate value of each identified investment based on its quoted market price, if available. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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|
Fair Value Measurement (Tables)
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12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2012
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| Financial Instruments Carried at Fair Value | The following table presents the financial instruments carried at fair value as of December 31, 2012 and 2011, by consolidated balance sheet caption and by valuation hierarchy, as described above:
|
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| Condensed Consolidated Balance Sheets for Derivative Financial Instruments |
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| Schedule Of Valuation Processes |
|
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| X | ||||||||||
|
- Definition
Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Definition
Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Definition
Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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|
Debt (Tables)
|
12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
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| Schedule of Long-Term Debt | Long-term debt was as follows:
|
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| Future Maturities of Long-Term Debt | The future maturities of long-term debt in the year indicated are as follows:
|
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| X | ||||||||||
|
- Definition
Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Risk Management and Hedging Activities (Tables)
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12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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|
Dec. 31, 2012
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| Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) | The following summarizes the balance within AOCI relative to our commodity, interest rate and foreign currency cash flow hedges:
|
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| Schedule of Designated and Non-Designated Derivative Instruments in Statement of Financial Position, Fair Value | The fair value of our derivative instruments that are designated as hedging instruments and those that are marked to market each period, as well as the location of each within our consolidated balance sheets, by major category, is summarized as follows:
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| Schedule of Derivatives Accounted for as Cash Flow Hedges | The following table summarizes the impact on our consolidated balance sheet and consolidated statements of operations of our derivative instruments that are accounted for using the cash flow hedge method of accounting for each of the years ended December 31, 2012 and 2011:
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| Schedule of Changes in Derivative Instruments Not Designated as Hedging Instruments | The following summarizes these amounts and the location within the consolidated statements of operations that such amounts are reflected:
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| Schedule of Net Long or Short Positions Expected to be Realized | The following tables represent, by commodity type, our net long or short positions that are expected to partially or entirely settle in each respective year. To the extent that we have long dated derivative positions that span multiple calendar years, the contract will appear in more than one line item in the tables below.
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| X | ||||||||||
|
- Definition
Schedule of Designated and Non-Designated Derivative Instruments in Statement Of Financial Position, Fair Value No definition available.
|
| X | ||||||||||
|
- Definition
Tabular disclosure of the components of accumulated other comprehensive income (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Tabular disclosure for cash flow hedging instruments of (a) the location and amount of gains and losses reported in the statement of financial performance and (b) the location and fair value amounts of the instruments reported in the statement of financial position. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Tabular disclosure of the notional amounts of outstanding derivative positions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Tabular disclosure for other derivative instruments not designated as hedging instruments of (a) the location and amount of gains and losses reported in the statement of financial performance and (b) the location and fair value amounts of the instruments reported in the statement of financial position. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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|
Partnership Equity and Distributions (Tables)
|
12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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|
Dec. 31, 2012
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| Cash Distribution | The following table presents our cash distributions paid in 2012, 2011 and 2010:
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| X | ||||||||||
|
- Definition
Tabular disclosure of payments of cash or stock or units made to members or limited partners of the LLC or LP during an accounting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Equity-Based Compensation (Tables)
|
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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|
Dec. 31, 2012
|
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| Total Compensation Cost for Equity-Based Arrangements | Total compensation cost for equity-based arrangements was as follows:
|
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|
Phantom Units [Member]
|
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| Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award | The following table presents information related to the Phantom Units:
|
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| Fair Value of Units Vested and the Unit-Based Liabilities Paid for Unit Based Awards | The following table presents the fair value of units vested related to Phantom Units:
|
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|
Restricted Phantom Units [Member]
|
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| Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award | The following table presents information
related to the RPUs:
|
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| Fair Value of Units Vested and the Unit-Based Liabilities Paid for Unit Based Awards | The following table presents the fair value of units vested and the unit-based liabilities paid for unit based awards related to Restricted Phantom Units:
|
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|
Performance Phantom Units [Member]
|
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| Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award | The following table presents information
related to the PPUs:
|
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| Fair Value of Units Vested and the Unit-Based Liabilities Paid for Unit Based Awards | The following table presents the fair value of units vested and the unit-based liabilities paid related to PPUs, including the related DERs:
|
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| X | ||||||||||
|
- Definition
Tabular disclosure of the fair value of units vested and the unit-based liabilities paid for unit based awards during the period. No definition available.
|
| X | ||||||||||
|
- Definition
Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Income Taxes (Tables)
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12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
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| Components of Income Tax Benefit (Expense) | Income tax expense consists of the following:
|
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| X | ||||||||||
|
- Definition
Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Commitments and Contingent Liabilities (Tables)
|
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
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| Schedule of Future Minimum Rental Payments for Various Operating Leases | Minimum rental payments under our various operating leases in the year indicated are as follows at December 31, 2012:
|
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| X | ||||||||||
|
- Definition
Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Business Segments (Tables)
|
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2012
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| Segment Information | The following tables set forth our segment information: Year Ended December 31, 2012:
Year Ended December 31, 2011:
Year Ended December 31, 2010:
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| X | ||||||||||
|
- Definition
Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Supplemental Cash Flow Information (Tables)
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12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2012
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| Summary of Supplemental Cash Flow Information |
|
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| X | ||||||||||
|
- Definition
Tabular disclosure of supplemental cash flow information for the periods presented. No definition available.
|
|
Quarterly Financial Data (Tables)
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12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2012
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| Schedule of Quarterly Consolidated Results of Operations | Our consolidated results of operations by quarter for the years ended December 31, 2012 and 2011 were as follows (millions, except per unit amounts):
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| X | ||||||||||
|
- Definition
Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and cumulative effect of a change in accounting principle and earnings per share data. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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|
Supplementary Information - Condensed Consolidating Financial Information (Tables)
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12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
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| Condensed Consolidating Balance Sheets |
|
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| Condensed Consolidating Statements of Operations |
|
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| Condensed Consolidating Statemement of Comprehensive Income |
|
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| Condensed Consolidating Statements of Cash Flows |
|
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| X | ||||||||||
|
- Definition
Condensed Consolidating Balance Sheets [Table Text Block] No definition available.
|
| X | ||||||||||
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- Definition
Condensed Consolidating Statements of Cash Flows [Table Text Block] No definition available.
|
| X | ||||||||||
|
- Definition
Condensed Consolidating Statements Of Comprehensive Income Loss Table [Text Block] No definition available.
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| X | ||||||||||
|
- Definition
Condensed Consolidating Statements of Operations [Table Text Block] No definition available.
|
|
Valuation and Qualifying Accounts and Reserves (Tables)
|
12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2012
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| Schedule of Valuation and Qualifying Accounts Reserves | Our valuation and qualifying accounts and reserves for the years ended December 31, 2012, 2011 and 2010 are as follows:
|
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| X | ||||||||||
|
- Definition
Schedule Of Valuation And Qualifying Accounts Reserves [Table Text Block] No definition available.
|
|
Description of Business and Basis of Presentation (Narrative) (Detail)
|
1 Months Ended | 3 Months Ended | 12 Months Ended | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Mar. 30, 2012
Southeast Texas [Member]
|
Sep. 30, 2012
Southeast Texas [Member]
|
Dec. 31, 2012
Southeast Texas [Member]
|
Dec. 31, 2011
Southeast Texas [Member]
|
Dec. 31, 2010
Southeast Texas [Member]
|
Mar. 31, 2012
Southeast Texas [Member]
|
Jan. 31, 2011
Southeast Texas [Member]
|
Dec. 31, 2012
Spectra Energy [Member]
|
Jan. 31, 2012
Spectra Energy [Member]
|
Dec. 31, 2012
ConocoPhillips [Member]
|
Dec. 31, 2012
DCP Midstream, LLC [Member]
|
Dec. 31, 2012
Discovery Producer Services LLC [Member]
|
Dec. 31, 2012
Black Lake [Member]
|
Dec. 31, 2010
Black Lake [Member]
|
Dec. 31, 2012
East Texas System [Member]
|
Jan. 31, 2012
East Texas System [Member]
|
Jan. 03, 2012
East Texas System [Member]
|
Dec. 31, 2012
Texas Express [Member]
|
Dec. 31, 2012
Eagle Ford System [Member]
|
Nov. 30, 2012
Eagle Ford System [Member]
|
Nov. 02, 2012
Eagle Ford System [Member]
|
Dec. 31, 2012
Investments In Greater Than 20% [Member]
|
Dec. 31, 2012
Investments In Less Than 20% [Member]
|
|
| Business Acquisition [Line Items] | |||||||||||||||||||||||
| Ownership interest percentage | 33.33% | 33.33% | 33.33% | 33.33% | 33.33% | 40.00% | 10.00% | 33.33% | 20.00% | 20.00% | |||||||||||||
| Ownership interest percentage by parent | 50.00% | 50.00% | 50.00% | 28.00% | 75.00% | 50.10% | |||||||||||||||||
| Ownership interest acquired | 66.67% | 66.67% | 66.67% | 66.67% | 33.33% | 46.67% | 5.00% | 49.90% | 49.90% | 49.90% | 46.67% | 33.33% | 33.33% | ||||||||||
| Ownership interest percentage in subsidiary | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | ||||||||||||||||||
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Percentage of voting equity interests acquired in the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The parent entity's interest in net assets of the subsidiary, expressed as a percentage. No definition available.
|
| X | ||||||||||
|
- Definition
The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Summary of Significant Accounting Policies (Narrative) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2012
Customer
|
Dec. 31, 2011
Customer
|
Dec. 31, 2010
Customer
|
|
| Summary Of Significant Accounting Policies [Line Items] | |||
| Customers that accounted for total operating revenues | 10.00% | ||
| Significant customers | 1 | 1 | 1 |
| Environmental liabilities, current | $ 0.8 | $ 0.8 | |
| Environmental liabilities, non-current | $ 1.0 | $ 1.2 | |
|
Wholesale Propane Logistics [Member]
|
|||
| Summary Of Significant Accounting Policies [Line Items] | |||
| Customers that accounted for total operating revenues | 20.00% | 17.00% | 17.00% |
|
Investments In Greater Than 20% [Member]
|
|||
| Summary Of Significant Accounting Policies [Line Items] | |||
| Ownership interest percentage | 20.00% | ||
|
Investments In Less Than 20% [Member]
|
|||
| Summary Of Significant Accounting Policies [Line Items] | |||
| Ownership interest percentage | 20.00% | ||
| X | ||||||||||
|
- Definition
Significant customers. No definition available.
|
| X | ||||||||||
|
- Definition
Significant customers, percentage accounted of total revenue. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable in twelve months or in the next operating cycle if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable after twelve months or beyond the next operating cycle if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Summary of Significant Accounting Policies (Schedule of Derivatives, Accounting Method and Presentation) (Detail)
|
12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
||||||||
|
Non-Trading Derivative Activity [Member]
|
||||||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||||||
| Classification of Contract | Non-Trading Derivative Activity | |||||||
| Accounting Method | Mark-to-market method | [1] | ||||||
| Presentation of Gains & Losses or Revenue & Expense | Net basis in gains and losses from commodity derivative activity | |||||||
|
Cash Flow Hedge [Member]
|
||||||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||||||
| Classification of Contract | Cash Flow Hedge | |||||||
| Accounting Method | Hedge method | [2] | ||||||
| Presentation of Gains & Losses or Revenue & Expense | Gross basis in the same consolidated statements of operations category as the related hedged item | |||||||
|
Fair Value Hedge [Member]
|
||||||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||||||
| Classification of Contract | Fair Value Hedge | |||||||
| Accounting Method | Hedge method | [2] | ||||||
| Presentation of Gains & Losses or Revenue & Expense | Gross basis in the same consolidated statements of operations category as the related hedged item | |||||||
|
Normal Purchases Or Normal Sales [Member]
|
||||||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||||||
| Classification of Contract | Normal Purchases or Normal Sales | |||||||
| Accounting Method | Accrual method | [3] | ||||||
| Presentation of Gains & Losses or Revenue & Expense | Gross basis upon settlement in the corresponding consolidated statements of operations category based on purchase or sale | |||||||
|
||||||||
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Describes the basis at which an entity records derivatives in its statements of financial position. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Describes each method an entity uses to account for its derivative financial instruments and derivative commodity instruments ("derivatives"). Also describes (separately addressing derivatives entered into for trading purposes and those entered into for purposes other than trading that is interest rate derivatives, risk management, commitments): (1) the types of derivatives accounted for under each method; (2) the criteria required to be met for each accounting method used, including a discussion of the criteria required to be met for hedge accounting (for example, whether and how risk reduction, correlation, designation, and effectiveness tests are applied); and (3) the accounting method used if the criteria for hedge accounting are not met. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Describes the types of derivatives and the accounting method used by the entity for each type. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Acquisitions (Narrative) (Detail) (USD $)
In Millions, except Share data, unless otherwise specified |
1 Months Ended | 3 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | 1 Months Ended | 3 Months Ended | 12 Months Ended | 1 Months Ended | 1 Months Ended | 1 Months Ended | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Mar. 30, 2012
|
Dec. 31, 2012
|
Sep. 30, 2012
|
Jun. 30, 2012
|
Mar. 31, 2012
|
Dec. 31, 2011
|
Sep. 30, 2011
|
Jun. 30, 2011
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Feb. 22, 2013
|
Nov. 30, 2012
|
Nov. 27, 2012
|
Mar. 13, 2012
|
Sep. 30, 2010
|
Dec. 31, 2012
Senior Notes, 4.95% Due 2022 [Member]
|
Mar. 31, 2012
Senior Notes, 4.95% Due 2022 [Member]
|
Jan. 03, 2012
Senior Notes, 4.95% Due 2022 [Member]
|
Apr. 12, 2012
Texas Express [Member]
mi
MBbls
in
|
Dec. 31, 2012
Texas Express [Member]
|
Apr. 12, 2012
Long Term Commitments [Member]
Texas Express [Member]
MBbls
|
Apr. 12, 2012
DCP Midstream, LLC [Member]
Texas Express [Member]
MBbls
|
Dec. 31, 2012
Eliminations [Member]
|
Dec. 31, 2011
Eliminations [Member]
|
Jul. 03, 2012
Crossroads System [Member]
MMcf
|
Dec. 31, 2012
Crossroads System [Member]
|
Dec. 31, 2011
Crossroads System [Member]
|
Jul. 03, 2012
Crossroads System [Member]
Gas Gathering Pipeline [Member]
mi
|
Jul. 03, 2012
Crossroads System [Member]
NGL Pipeline [Member]
mi
|
Jul. 03, 2012
Crossroads System [Member]
Residue Gas Pipeline [Member]
mi
|
Jan. 31, 2012
East Texas System [Member]
|
Jan. 03, 2012
East Texas System [Member]
|
Dec. 31, 2012
East Texas System [Member]
|
Mar. 30, 2012
Southeast Texas [Member]
|
Sep. 30, 2012
Southeast Texas [Member]
|
Dec. 31, 2012
Southeast Texas [Member]
|
Dec. 31, 2011
Southeast Texas [Member]
|
Dec. 31, 2010
Southeast Texas [Member]
|
Mar. 31, 2012
Southeast Texas [Member]
|
Jan. 31, 2011
Southeast Texas [Member]
|
Mar. 31, 2012
Southeast Texas [Member]
Senior Notes, 4.95% Due 2022 [Member]
|
Mar. 30, 2012
Southeast Texas [Member]
Termination of Fee Based Storage Arrangement [Member]
|
Mar. 30, 2012
Southeast Texas [Member]
Mitigate Gathering and Processing Commodity Price Risk [Member]
Senior Notes, 4.95% Due 2022 [Member]
|
Jul. 02, 2012
Mont Belvieu Enterprise Fractionator [Member]
|
Jul. 02, 2012
Mont Belvieu 1 Fractionator [Member]
|
Nov. 30, 2012
Eagle Ford System [Member]
|
Dec. 05, 2012
Eagle Ford System [Member]
MMcf
|
Nov. 02, 2012
Eagle Ford System [Member]
|
Dec. 31, 2012
Eagle Ford System [Member]
|
Dec. 05, 2012
Eagle Ford System [Member]
Goliad Plant [Member]
|
Dec. 05, 2012
DCP Midstream Partners, LP [Member]
|
Nov. 02, 2012
DCP Midstream Partners, LP [Member]
|
Dec. 31, 2012
DCP Midstream Partners, LP [Member]
|
Dec. 31, 2011
DCP Midstream Partners, LP [Member]
|
|||||||||||||||||||
| Business Acquisition [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ownership interest acquired | 10.00% | 50.00% | 49.90% | 49.90% | 49.90% | 66.67% | 66.67% | 66.67% | 66.67% | 33.33% | 66.67% | 33.33% | 66.67% | 33.33% | 33.33% | 46.67% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Aggregate consideration for acquisition | $ 85.0 | $ 63.0 | $ 63.0 | $ 165.0 | $ 240.0 | $ 200.0 | $ 438.3 | $ 626.0 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Term loan | 140.0 | 343.5 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Remaining consideration financed through issuance of common units, value | 33.0 | 48.0 | 60.0 | 87.7 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Issuance of common units | 1,000,417 | 727,520 | 727,520 | 1,000,417 | 1,536,098 | 1,912,663 | 1,912,663 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Excess purchase price over acquired assets | 35.7 | 9.3 | 7.3 | 156.4 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Customary purchase price adjustments | 7.1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Period of Term Loan Agreement | 2 years | 2 years | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Investments in unconsolidated affiliates | 558.0 | 107.1 | [1] | 558.0 | 107.1 | [1] | 6.1 | 97.0 | 43.2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Capacity of Goliad Plant | 200 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Contributed amount to project | 4.6 | 19.1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Incremental Amount Included In Contribution Made | 16.7 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Commodity price hedge period | 2 years | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Pipeline length | 580 | 8 | 20 | 11 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cryogenic processing plant | 80 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Total operating revenue | 1,720.7 | 2,358.4 | [1] | 2,108.4 | [2] | (0.2) | [3] | (2.2) | [3] | 27.0 | [4] | 114.3 | 788.6 | [5] | 838.9 | [5] | 1,720.7 | 2,358.4 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net income (loss) | 64.3 | 1.3 | 79.1 | 23.3 | 4.6 | 68.5 | 47.7 | 168.0 | 120.8 | [1] | 91.2 | [2] | 1.6 | [4] | 4.0 | 34.6 | [5] | 43.2 | [5] | 168.0 | 120.8 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Business Acquisition Cost of Acquired Entity Additional Consideration | 4.6 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Excess purchase price over acquired assets | 174.8 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Minority interests ownership percentage | 10.00% | 33.33% | 33.33% | 33.33% | 33.33% | 33.33% | 12.50% | 20.00% | 33.33% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Business acquisition, portion of purchase price paid in cash | 10.9 | 132.0 | 192.0 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Committed Construction Costs | 75.0 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Pipeline diameter in inches | 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Pipeline initial capacity | 280 | 252 | 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Senior notes interest rate percentage | 4.95% | 2.50% | 2.50% | 2.50% | 4.95% | 3.25% | 4.95% | 4.95% | 4.95% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Derivatives purchased in an acquisition | 39.5 | 24.6 | 14.9 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Deficit purchase price | $ 31.6 | $ 22.7 | $ 8.9 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ownership interest percentage in subsidiary | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ownership interest percentage by parent | 50.10% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| X | ||||||||||
|
- Definition
Business Acquisition Cost Of Acquired Entity Additional Consideration No definition available.
|
| X | ||||||||||
|
- Definition
The capacity of cryogenic processing plants measured in million cubic feet per day. No definition available.
|
| X | ||||||||||
|
- Definition
Committed Construction Costs No definition available.
|
| X | ||||||||||
|
- Definition
Commodity Price Hedge Period No definition available.
|
| X | ||||||||||
|
- Definition
Contributed Amount To Project No definition available.
|
| X | ||||||||||
|
- Definition
In a transfer between entities under common control, the amount of the purchase price in deficit of the seller's basis in the net assets acquired. No definition available.
|
| X | ||||||||||
|
- Definition
In a transfer between entities under common control, the amount of the purchase price in excess of the seller's basis in the net assets acquired. No definition available.
|
| X | ||||||||||
|
- Definition
Excess purchase price over acquired assets No definition available.
|
| X | ||||||||||
|
- Definition
Incremental Amount Included In Contribution Made No definition available.
|
| X | ||||||||||
|
- Definition
Ngl Hedge Acquired No definition available.
|
| X | ||||||||||
|
- Definition
Period Of Term Loan Agreement No definition available.
|
| X | ||||||||||
|
- Definition
Pipeline Capacity Barrels Per Day No definition available.
|
| X | ||||||||||
|
- Definition
Pipeline Diameter No definition available.
|
| X | ||||||||||
|
- Definition
Pipeline Length In Miles No definition available.
|
| X | ||||||||||
|
- Definition
Plant Gas Processing Capacity No definition available.
|
| X | ||||||||||
|
- Definition
Working Capital Purchase Price Adjustments No definition available.
|
| X | ||||||||||
|
- Definition
Amount of cash paid to acquire the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The acquisition-date fair value of the equity interests of the acquirer, including the number of instruments or interests issued or issuable in consideration for the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Number of shares of equity interests issued or issuable to acquire entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Percentage of voting equity interests acquired in the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Interest rate stated in the contractual debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The parent entity's interest in net assets of the subsidiary, expressed as a percentage. No definition available.
|
| X | ||||||||||
|
- Definition
Midstream refers to those gas industry activities that fall between exploration and production (upstream) and refining and marketing (downstream). It may be applied to the gathering, processing, transmission and storage of natural gas; including the treating of natural gas to remove impurities, along with the sale of by-products such as residue gas, natural gas liquids and condensate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Acquisitions (Schedule of Preliminary Purchase Price Allocation) (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2012
Crossroads System [Member]
|
Jul. 03, 2012
Crossroads System [Member]
|
|||
|---|---|---|---|---|---|---|---|
| Schedule Of Business Acquisitions Purchase Price Allocation [Line Items] | |||||||
| Aggregate consideration | $ 63.0 | ||||||
| Accounts receivable | 4.2 | ||||||
| Property, plant and equipment | 63.1 | ||||||
| Investments in unconsolidated affiliates | 558.0 | 107.1 | [1] | 6.1 | |||
| Other current liabilities | (4.1) | ||||||
| Other long-term liabilities | (6.3) | ||||||
| Total preliminary purchase price allocation | $ 63.0 | $ 63.0 | |||||
|
|||||||
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of potential cash payments that could result from the contingent consideration arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of acquisition cost of a business combination allocated to receivables. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of acquisition cost of a business combination allocated to other current liabilities of the acquired entity. Does not include amounts allocated to the current portion of long-term debt, accounts payable and accrued expenses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of acquisition cost of a business combination allocated to other liabilities not separately disclosed in the balance sheet. No definition available.
|
| X | ||||||||||
|
- Definition
The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Acquisitions (Schedule of Unaudited Pro Forma Information for Condensed Consolidated Statement of Operations) (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified |
3 Months Ended | 12 Months Ended | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Sep. 30, 2012
|
Jun. 30, 2012
|
Mar. 31, 2012
|
Dec. 31, 2011
|
Sep. 30, 2011
|
Jun. 30, 2011
|
Mar. 31, 2011
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
||||||||||
| Schedule Of Condensed Statements Of Operations [Line Items] | ||||||||||||||||||||
| Total operating revenues | $ 1,720.7 | $ 2,358.4 | [1] | $ 2,108.4 | [2] | |||||||||||||||
| Net income attributable to partners | 64.3 | 1.3 | 79.1 | 23.3 | 4.6 | 68.5 | 47.7 | 168.0 | 120.8 | [1] | 91.2 | [2] | ||||||||
| Net income attributable to predecessor operations | 2.6 | 20.4 | 43.2 | |||||||||||||||||
| General partner's interest in net income | (41.2) | (25.2) | (16.9) | |||||||||||||||||
| Net income allocable to limited partners | 52.5 | (9.5) | 68.9 | 12.3 | (8.2) | 59.5 | 35.3 | (11.4) | 124.2 | 75.2 | 31.1 | |||||||||
|
DCP Midstream Partners, LP [Member]
|
||||||||||||||||||||
| Schedule Of Condensed Statements Of Operations [Line Items] | ||||||||||||||||||||
| Total operating revenues | 1,720.7 | 2,358.4 | ||||||||||||||||||
| Net income attributable to partners | 168.0 | 120.8 | ||||||||||||||||||
| Net income attributable to predecessor operations | (2.6) | (20.4) | ||||||||||||||||||
| General partner's interest in net income | (41.2) | (25.2) | ||||||||||||||||||
| Net income allocable to limited partners | 124.2 | 75.2 | ||||||||||||||||||
| Net income per limited partner unit - basic | $ 1.73 | |||||||||||||||||||
| Net income per limited partner unit - basic and diluted | $ 2.28 | |||||||||||||||||||
| Net income per limited partner unit - diluted | $ 1.72 | |||||||||||||||||||
|
Crossroads System [Member]
|
||||||||||||||||||||
| Schedule Of Condensed Statements Of Operations [Line Items] | ||||||||||||||||||||
| Total operating revenues | 27.0 | [3] | 114.3 | |||||||||||||||||
| Net income attributable to partners | 1.6 | [3] | 4.0 | |||||||||||||||||
| Net income allocable to limited partners | 1.6 | [3] | 4.0 | |||||||||||||||||
| Net income per limited partner unit - basic | $ 0.09 | |||||||||||||||||||
| Net income per limited partner unit - basic and diluted | $ 0.03 | [3] | ||||||||||||||||||
| Net income per limited partner unit - diluted | $ 0.09 | |||||||||||||||||||
|
DCP Midstream Partners, LP Pro Forma [Member]
|
||||||||||||||||||||
| Schedule Of Condensed Statements Of Operations [Line Items] | ||||||||||||||||||||
| Total operating revenues | 1,747.7 | 2,472.7 | ||||||||||||||||||
| Net income attributable to partners | 169.6 | 124.8 | ||||||||||||||||||
| Net income attributable to predecessor operations | (2.6) | (20.4) | ||||||||||||||||||
| General partner's interest in net income | (41.2) | (25.2) | ||||||||||||||||||
| Net income allocable to limited partners | $ 125.8 | $ 79.2 | ||||||||||||||||||
| Net income per limited partner unit - basic | $ 1.82 | |||||||||||||||||||
| Net income per limited partner unit - basic and diluted | $ 2.31 | |||||||||||||||||||
| Net income per limited partner unit - diluted | $ 1.81 | |||||||||||||||||||
|
||||||||||||||||||||
| X | ||||||||||
|
- Definition
Business Acquisition Pro Forma Earnings Per Share Basic And Diluted No definition available.
|
| X | ||||||||||
|
- Definition
Amount of net (income) loss which is attributable to predecessor operations. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Midstream refers to those gas industry activities that fall between exploration and production (upstream) and refining and marketing (downstream). It may be applied to the gathering, processing, transmission and storage of natural gas; including the treating of natural gas to remove impurities, along with the sale of by-products such as residue gas, natural gas liquids and condensate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate amount of net income allocated to general partners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate amount of net income allocated to limited partners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Acquisitions (Schedule of Impact on Financial Statements Due to Acquisition, Balance Sheets) (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2009
|
|||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Condensed Financial Statements, Captions [Line Items] | |||||||||||||||||||
| Cash and cash equivalents | $ 1.3 | $ 7.6 | [1],[2] | $ 6.7 | [1],[3] | $ 2.1 | [3] | ||||||||||||
| Accounts receivable | 214.8 | ||||||||||||||||||
| Inventories | 74.7 | 87.9 | [2] | ||||||||||||||||
| Other | 51.8 | 43.4 | [2] | ||||||||||||||||
| Total current assets | 309.1 | 353.7 | [2] | 350.4 | |||||||||||||||
| Property, plant and equipment, net | 1,727.4 | 1,499.4 | [2] | ||||||||||||||||
| Goodwill and intangible assets, net | 290.7 | 299.1 | [2] | ||||||||||||||||
| Investments in unconsolidated affiliates | 558.0 | 107.1 | [2] | ||||||||||||||||
| Other non-current assets | 86.8 | 18.1 | [2] | ||||||||||||||||
| Total assets | 2,972.0 | 2,277.4 | [2] | 2,147.2 | |||||||||||||||
| Accounts payable and other current liabilities | 233.4 | 380.5 | |||||||||||||||||
| Long-term debt | 1,620.3 | 746.8 | [2] | ||||||||||||||||
| Other long-term liabilities | 35.1 | 51.8 | [2] | ||||||||||||||||
| Total liabilities | 1,888.8 | 1,179.1 | [2] | ||||||||||||||||
| Commitments and contingent liabilities | [2] | ||||||||||||||||||
| Net equity | 907.1 | ||||||||||||||||||
| Accumulated other comprehensive loss | (14.7) | (21.2) | [2] | ||||||||||||||||
| Total partners' equity | 1,047.8 | 885.9 | [2] | ||||||||||||||||
| Noncontrolling interests | 35.4 | 212.4 | [2] | ||||||||||||||||
| Total equity | 1,083.2 | 1,098.3 | [2] | 1,076.0 | 817.7 | ||||||||||||||
| Total liabilities and equity | 2,972.0 | 2,277.4 | [2] | ||||||||||||||||
|
DCP Midstream Partners, LP (As Previously Reported) [Member]
|
|||||||||||||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||||||||||||
| Cash and cash equivalents | 6.7 | [4] | |||||||||||||||||
| Accounts receivable | 161.4 | [4] | |||||||||||||||||
| Inventories | 64.7 | [4] | |||||||||||||||||
| Other | 7.1 | [4] | |||||||||||||||||
| Total current assets | 239.9 | [4] | |||||||||||||||||
| Property, plant and equipment, net | 1,181.8 | [4] | |||||||||||||||||
| Goodwill and intangible assets, net | 255.8 | [4] | |||||||||||||||||
| Investments in unconsolidated affiliates | 208.7 | [4] | |||||||||||||||||
| Other non-current assets | 17.4 | [4] | |||||||||||||||||
| Total assets | 1,903.6 | [4] | |||||||||||||||||
| Accounts payable and other current liabilities | 269.2 | [4] | |||||||||||||||||
| Long-term debt | 746.8 | [4] | |||||||||||||||||
| Other long-term liabilities | 46.7 | [4] | |||||||||||||||||
| Total liabilities | 1,062.7 | [4] | |||||||||||||||||
| Commitments and contingent liabilities | [4] | ||||||||||||||||||
| Net equity | 649.7 | [4] | |||||||||||||||||
| Accumulated other comprehensive loss | (21.2) | [4] | |||||||||||||||||
| Total partners' equity | 628.5 | [4] | |||||||||||||||||
| Noncontrolling interests | 212.4 | [4] | |||||||||||||||||
| Total equity | 840.9 | [4] | |||||||||||||||||
| Total liabilities and equity | 1,903.6 | [4] | |||||||||||||||||
|
Southeast Texas [Member]
|
|||||||||||||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||||||||||||
| Cash and cash equivalents | 0.9 | [5] | |||||||||||||||||
| Accounts receivable | 53.4 | [5] | |||||||||||||||||
| Inventories | 23.2 | [5] | |||||||||||||||||
| Other | 36.3 | [5] | |||||||||||||||||
| Total current assets | 113.8 | [5] | |||||||||||||||||
| Property, plant and equipment, net | 317.6 | [5] | |||||||||||||||||
| Goodwill and intangible assets, net | 43.3 | [5] | |||||||||||||||||
| Other non-current assets | 0.7 | [5] | |||||||||||||||||
| Total assets | 475.4 | [5] | |||||||||||||||||
| Accounts payable and other current liabilities | 111.3 | [5] | |||||||||||||||||
| Other long-term liabilities | 5.1 | [5] | |||||||||||||||||
| Total liabilities | 116.4 | [5] | |||||||||||||||||
| Commitments and contingent liabilities | [5] | ||||||||||||||||||
| Net equity | 360.8 | [5] | |||||||||||||||||
| Accumulated other comprehensive loss | (1.8) | [5] | |||||||||||||||||
| Total partners' equity | 359.0 | [5] | |||||||||||||||||
| Total equity | 359.0 | [5] | |||||||||||||||||
| Total liabilities and equity | 475.4 | [5] | |||||||||||||||||
|
Remove Southeast Texas Investment In Unconsolidated Affiliate [Member]
|
|||||||||||||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||||||||||||
| Investments in unconsolidated affiliates | (101.6) | [6] | |||||||||||||||||
| Total assets | (101.6) | [6] | |||||||||||||||||
| Commitments and contingent liabilities | [6] | ||||||||||||||||||
| Net equity | (103.4) | [6] | |||||||||||||||||
| Accumulated other comprehensive loss | 1.8 | [6] | |||||||||||||||||
| Total partners' equity | (101.6) | [6] | |||||||||||||||||
| Total equity | (101.6) | [6] | |||||||||||||||||
| Total liabilities and equity | $ (101.6) | [6] | |||||||||||||||||
|
|||||||||||||||||||
| X | ||||||||||
|
- Definition
Goodwill and Intangible Assets, Net No definition available.
|
| X | ||||||||||
|
- Definition
Net Equity No definition available.
|
| X | ||||||||||
|
- Definition
Other current assets, including unrealized gains on derivative instruments. No definition available.
|
| X | ||||||||||
|
- Definition
Other long term liabilities, including unrealized losses on derivative instruments. No definition available.
|
| X | ||||||||||
|
- Definition
Other long term assets, including unrealized gains on derivative instruments. No definition available.
|
| X | ||||||||||
|
- Definition
For an unclassified balance sheet, the amount due from customers or clients for goods or services that have been delivered or sold in the normal course of business, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total of all Liabilities and Stockholders' Equity items (or Partners' Capital, as applicable), including the portion of equity attributable to noncontrolling interests, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of ownership interest of different classes of partners in limited partnership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total of all Partners' Capital (deficit) items which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of partners' capital (deficit), including portions attributable to both the parent and noncontrolling interests. Excludes temporary equity and is sometimes called permanent equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Acquisitions (Schedule of Impact on Financial Statements Due to Acquisition, Balance Sheets) (Parenthetical) (Detail)
|
1 Months Ended | 3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
|
Mar. 30, 2012
|
Sep. 30, 2012
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Jan. 31, 2011
|
|
|
Southeast Texas [Member]
|
||||||
| Condensed Financial Statements, Captions [Line Items] | ||||||
| Ownership interest percentage | 33.33% | 33.33% | 33.33% | 33.33% | 33.33% | |
| Percentage of ownership | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | |
|
Remove Southeast Texas Investment In Unconsolidated Affiliate [Member]
|
||||||
| Condensed Financial Statements, Captions [Line Items] | ||||||
| Ownership interest percentage | 33.33% | |||||
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Acquisitions (Schedule of Impact on Financial Statements Due to Acquisition, Statement of Operations) (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 12 Months Ended | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Sep. 30, 2012
|
Jun. 30, 2012
|
Mar. 31, 2012
|
Dec. 31, 2011
|
Sep. 30, 2011
|
Jun. 30, 2011
|
Mar. 31, 2011
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
||||||||||||||||
| Condensed Financial Statements, Captions [Line Items] | ||||||||||||||||||||||||||
| Sales of natural gas, propane, NGLs and condensate | $ 1,465.9 | $ 2,178.5 | [1] | $ 1,975.1 | [2] | |||||||||||||||||||||
| Transportation, processing and other | 185.0 | 172.2 | [1] | 130.3 | [2] | |||||||||||||||||||||
| (Losses) gains from commodity derivative activity, net | 69.8 | 7.7 | [1] | 3.0 | [2] | |||||||||||||||||||||
| Total operating revenues | 1,720.7 | 2,358.4 | [1] | 2,108.4 | [2] | |||||||||||||||||||||
| Purchases of natural gas, propane and NGLs | 1,301.5 | 1,933.0 | [1] | 1,783.1 | [2] | |||||||||||||||||||||
| Operating and maintenance expense | 123.2 | 125.7 | [1] | 98.3 | [2] | |||||||||||||||||||||
| Depreciation and amortization expense | 63.4 | 100.6 | [1] | 88.1 | [2] | |||||||||||||||||||||
| General and administrative expense | 45.8 | 48.3 | [1] | 45.8 | [2] | |||||||||||||||||||||
| Other income | (0.5) | (0.5) | (2.0) | |||||||||||||||||||||||
| Total operating costs and expenses | 1,533.4 | 2,207.1 | [1] | 2,001.2 | [2] | |||||||||||||||||||||
| Operating income | 65.4 | 1.4 | 89.4 | 31.1 | 13.5 | 70.2 | 60.3 | 7.3 | 187.3 | 151.3 | [1] | 107.2 | [2] | |||||||||||||
| Interest expense, net | (42.2) | (33.9) | [1] | (29.1) | [2] | |||||||||||||||||||||
| Earnings from unconsolidated affiliates | 28.9 | 22.7 | [1] | 23.8 | [2] | |||||||||||||||||||||
| Income before income taxes | 174.0 | 140.1 | [1] | 101.9 | [2] | |||||||||||||||||||||
| Income tax (expense) benefit | (1.0) | [3] | (0.5) | [1],[3] | (1.5) | [2],[3] | ||||||||||||||||||||
| Net income | 67.3 | 1.9 | 79.8 | 24.0 | 10.6 | 68.1 | 57.4 | 3.5 | 173.0 | 139.6 | [1] | 100.4 | [2] | |||||||||||||
| Net income attributable to noncontrolling interests | (3.0) | (0.6) | (0.7) | (0.7) | (6.0) | 0.4 | (9.7) | (3.5) | (5.0) | (18.8) | [1] | (9.2) | [2] | |||||||||||||
| Net income attributable to partners | 64.3 | 1.3 | 79.1 | 23.3 | 4.6 | 68.5 | 47.7 | 168.0 | 120.8 | [1] | 91.2 | [2] | ||||||||||||||
| Gain on step acquisition | (9.1) | [2] | ||||||||||||||||||||||||
|
DCP Midstream Partners, LP (As Previously Reported) [Member]
|
||||||||||||||||||||||||||
| Condensed Financial Statements, Captions [Line Items] | ||||||||||||||||||||||||||
| Sales of natural gas, propane, NGLs and condensate | 1,413.3 | [4] | 1,162.7 | [4] | ||||||||||||||||||||||
| Transportation, processing and other | 163.2 | [4] | 115.3 | [4] | ||||||||||||||||||||||
| (Losses) gains from commodity derivative activity, net | (6.7) | [4] | (8.5) | [4] | ||||||||||||||||||||||
| Total operating revenues | 1,569.8 | [4] | 1,269.5 | [4] | ||||||||||||||||||||||
| Purchases of natural gas, propane and NGLs | 1,229.8 | [4] | 1,032.6 | [4] | ||||||||||||||||||||||
| Operating and maintenance expense | 105.4 | [4] | 79.8 | [4] | ||||||||||||||||||||||
| Depreciation and amortization expense | 81.0 | [4] | 73.7 | [4] | ||||||||||||||||||||||
| General and administrative expense | 37.3 | [4] | 33.7 | [4] | ||||||||||||||||||||||
| Other income | (0.5) | [4] | (4.0) | [4] | ||||||||||||||||||||||
| Total operating costs and expenses | 1,453.0 | [4] | 1,206.7 | [4] | ||||||||||||||||||||||
| Operating income | 116.8 | [4] | 62.8 | [4] | ||||||||||||||||||||||
| Interest expense, net | (33.9) | [4] | (29.1) | [4] | ||||||||||||||||||||||
| Earnings from unconsolidated affiliates | 36.9 | [4] | 38.2 | [4] | ||||||||||||||||||||||
| Income before income taxes | 119.8 | [4] | 71.9 | [4] | ||||||||||||||||||||||
| Income tax (expense) benefit | (0.6) | [4] | (0.3) | [4] | ||||||||||||||||||||||
| Net income | 119.2 | [4] | 71.6 | [4] | ||||||||||||||||||||||
| Net income attributable to noncontrolling interests | (18.8) | [4] | (9.2) | [4] | ||||||||||||||||||||||
| Net income attributable to partners | 100.4 | [4] | 62.4 | [4] | ||||||||||||||||||||||
| Gain on step acquisition | (9.1) | [4] | ||||||||||||||||||||||||
|
Southeast Texas [Member]
|
||||||||||||||||||||||||||
| Condensed Financial Statements, Captions [Line Items] | ||||||||||||||||||||||||||
| Sales of natural gas, propane, NGLs and condensate | 765.2 | [5] | 812.4 | [5] | ||||||||||||||||||||||
| Transportation, processing and other | 9.0 | [5] | 15.0 | [5] | ||||||||||||||||||||||
| (Losses) gains from commodity derivative activity, net | 14.4 | [5] | 11.5 | [5] | ||||||||||||||||||||||
| Total operating revenues | 788.6 | [5] | 838.9 | [5] | ||||||||||||||||||||||
| Purchases of natural gas, propane and NGLs | 703.2 | [5] | 750.5 | [5] | ||||||||||||||||||||||
| Operating and maintenance expense | 20.3 | [5] | 18.5 | [5] | ||||||||||||||||||||||
| Depreciation and amortization expense | 19.6 | [5] | 14.4 | [5] | ||||||||||||||||||||||
| General and administrative expense | 2.5 | 11.0 | [5] | 12.1 | [5] | |||||||||||||||||||||
| Other income | (1.0) | [5] | ||||||||||||||||||||||||
| Total operating costs and expenses | 754.1 | [5] | 794.5 | [5] | ||||||||||||||||||||||
| Operating income | 34.5 | [5] | 44.4 | [5] | ||||||||||||||||||||||
| Income before income taxes | 34.5 | [5] | 44.4 | [5] | ||||||||||||||||||||||
| Income tax (expense) benefit | 0.1 | [5] | (1.2) | [5] | ||||||||||||||||||||||
| Net income | 34.6 | [5] | 43.2 | [5] | ||||||||||||||||||||||
| Net income attributable to partners | 34.6 | [5] | 43.2 | [5] | ||||||||||||||||||||||
|
Remove Southeast Texas Equity Earnings [Member]
|
||||||||||||||||||||||||||
| Condensed Financial Statements, Captions [Line Items] | ||||||||||||||||||||||||||
| Earnings from unconsolidated affiliates | (14.2) | [6] | (14.4) | [6] | ||||||||||||||||||||||
| Income before income taxes | (14.2) | [6] | (14.4) | [6] | ||||||||||||||||||||||
| Net income | (14.2) | [6] | (14.4) | [6] | ||||||||||||||||||||||
| Net income attributable to partners | $ (14.2) | [6] | $ (14.4) | [6] | ||||||||||||||||||||||
|
||||||||||||||||||||||||||
| X | ||||||||||
|
- Definition
Gains (losses) from commodity derivative activity, net. No definition available.
|
| X | ||||||||||
|
- Definition
Natural gas, propane, NGLs and condensate purchases. No definition available.
|
| X | ||||||||||
|
- Definition
Sales of natural gas, propane, NGLs and condensate. No definition available.
|
| X | ||||||||||
|
- Definition
In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Total costs of sales and operating expenses for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Revenue related to midstream and downstream gas activities. May include the following: gathering from wells, processing to remove impurities, storage, transmission, and the sale of natural gas and related products. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cost of borrowed funds accounted for as interest that was charged against earnings during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Midstream refers to those gas industry activities that fall between exploration and production (upstream) and refining and marketing (downstream). It may be applied to the gathering, processing, transmission and storage of natural gas; including the treating of natural gas to remove impurities, along with the sale of by-products such as residue gas, natural gas liquids and condensate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The net result for the period of deducting operating expenses from operating revenues. No definition available.
|
| X | ||||||||||
|
- Definition
The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The total amount of other operating income, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Acquisitions (Schedule of Impact on Financial Statements Due to Acquisition, Statement of Operations) (Parenthetical) (Detail)
|
1 Months Ended | 3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
|
Mar. 30, 2012
|
Sep. 30, 2012
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Jan. 31, 2011
|
|
|
Southeast Texas [Member]
|
||||||
| Condensed Financial Statements, Captions [Line Items] | ||||||
| Ownership interest percentage | 33.33% | 33.33% | 33.33% | 33.33% | 33.33% | |
| Percentage of ownership | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | |
|
Remove Southeast Texas Equity Earnings [Member]
|
||||||
| Condensed Financial Statements, Captions [Line Items] | ||||||
| Ownership interest percentage | 33.33% | |||||
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Agreements and Transactions with Affiliates (Schedule of Fees Incurred and Other Fees Paid) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2013
DCP Midstream, LLC [Member]
|
Dec. 31, 2012
DCP Midstream, LLC [Member]
Affiliated Entity [Member]
|
Dec. 31, 2011
DCP Midstream, LLC [Member]
Affiliated Entity [Member]
|
Dec. 31, 2010
DCP Midstream, LLC [Member]
Affiliated Entity [Member]
|
|||||||
| Omnibus Agreement | $ 25.4 | $ 10.2 | $ 9.9 | $ 28.6 | |||||||||
| Other fees - DCP Midstream, LLC | 3.9 | 18.9 | 21.4 | ||||||||||
| Total - DCP Midstream, LLC | $ 45.8 | $ 48.3 | [1] | $ 45.8 | [2] | $ 29.3 | $ 29.1 | $ 31.3 | |||||
|
|||||||||||||
| X | ||||||||||
|
- Definition
Omnibus Agreement No definition available.
|
| X | ||||||||||
|
- Definition
Other Fees Paid To Parent No definition available.
|
| X | ||||||||||
|
- Definition
The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Agreements and Transactions with Affiliates (Narrative) (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | |||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Sep. 30, 2012
|
Jun. 30, 2012
|
Mar. 31, 2012
|
Dec. 31, 2011
|
Sep. 30, 2011
|
Jun. 30, 2011
|
Mar. 31, 2011
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2012
East Texas System [Member]
|
Dec. 31, 2011
East Texas System [Member]
|
Dec. 31, 2010
East Texas System [Member]
|
Jan. 31, 2012
East Texas System [Member]
|
Jan. 03, 2012
East Texas System [Member]
|
Dec. 31, 2012
Southeast Texas [Member]
|
Dec. 31, 2011
Southeast Texas [Member]
|
Dec. 31, 2010
Southeast Texas [Member]
|
Sep. 30, 2012
Southeast Texas [Member]
|
Mar. 31, 2012
Southeast Texas [Member]
|
Mar. 30, 2012
Southeast Texas [Member]
|
Jan. 31, 2011
Southeast Texas [Member]
|
Dec. 31, 2013
DCP Midstream, LLC [Member]
|
Dec. 31, 2011
DCP Midstream, LLC [Member]
|
Dec. 31, 2012
DCP Midstream, LLC [Member]
|
Dec. 31, 2012
DCP Midstream, LLC [Member]
Commodity Derivative [Member]
|
Dec. 31, 2012
Spectra Energy [Member]
gal
|
Jan. 31, 2012
Spectra Energy [Member]
|
Dec. 31, 2012
ConocoPhillips [Member]
|
Dec. 31, 2012
Phillips 66 [Member]
|
Dec. 31, 2012
Mont Belvieu Fractionators [Member]
|
Sep. 16, 2010
Collbran [Member]
|
Dec. 31, 2010
Collbran [Member]
|
Dec. 31, 2010
Noncontrolling Interests [Member]
|
Dec. 31, 2012
DJ Basin NGL Fractionators [Member]
|
Dec. 31, 2011
DJ Basin NGL Fractionators [Member]
|
|||||||||||
| Related Party Transaction [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||
| Omnibus Agreement | $ 25.4 | $ 10.2 | $ 9.9 | $ 17.6 | $ 10.3 | $ 28.6 | $ 0.2 | ||||||||||||||||||||||||||||||||||||||||
| Ownership interest percentage | 49.90% | 49.90% | 49.90% | 66.67% | 66.67% | 66.67% | 66.67% | 33.33% | 46.67% | ||||||||||||||||||||||||||||||||||||||
| General and administrative expenses incurred | 45.8 | 48.3 | [1] | 45.8 | [2] | 7.5 | 7.8 | 2.5 | 11.0 | [3] | 12.1 | [3] | |||||||||||||||||||||||||||||||||||
| Other expenses | 1.4 | 1.4 | 1.5 | ||||||||||||||||||||||||||||||||||||||||||||
| Natural gas, propane, NGLs and condensate to affiliates | 2.5 | ||||||||||||||||||||||||||||||||||||||||||||||
| Transportation, processing and other to affiliates | 0.2 | ||||||||||||||||||||||||||||||||||||||||||||||
| Contributions from DCP Midstream, LLC | 5.3 | 18.3 | 13.8 | 4.9 | |||||||||||||||||||||||||||||||||||||||||||
| Settlement receivable | 7.8 | 6.6 | |||||||||||||||||||||||||||||||||||||||||||||
| Net income attributable to noncontrolling interests | 3.0 | 0.6 | 0.7 | 0.7 | 6.0 | (0.4) | 9.7 | 3.5 | 5.0 | 18.8 | [1] | 9.2 | [2] | 4.6 | |||||||||||||||||||||||||||||||||
| Sell of certain surplus equipment net book value | 6.2 | ||||||||||||||||||||||||||||||||||||||||||||||
| Proceeds from sell of certain surplus equipment net | 3.6 | ||||||||||||||||||||||||||||||||||||||||||||||
| Ownership interest percentage | 50.10% | 28.00% | 50.00% | 50.00% | 50.00% | 50.00% | 75.00% | ||||||||||||||||||||||||||||||||||||||||
| Percentage of investment in affiliate | 25.00% | ||||||||||||||||||||||||||||||||||||||||||||||
| Distributions to DCP Midstream, LLC | 2.6 | ||||||||||||||||||||||||||||||||||||||||||||||
| Related Party Transaction, Terms and Manner of Settlement | 10 year | ||||||||||||||||||||||||||||||||||||||||||||||
| Operating and maintenance expense | 123.2 | 125.7 | [1] | 98.3 | [2] | 20.3 | [3] | 18.5 | [3] | 0.6 | 0.6 | ||||||||||||||||||||||||||||||||||||
| Parental guarantees issued | $ 25.0 | ||||||||||||||||||||||||||||||||||||||||||||||
| Annual interest on outstanding guarantees | 0.50% | ||||||||||||||||||||||||||||||||||||||||||||||
| Supply of propane annually in gallons | 185,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||||
| X | ||||||||||
|
- Definition
Annual interest on outstanding guarantees No definition available.
|
| X | ||||||||||
|
- Definition
Machinery And Equipment Net No definition available.
|
| X | ||||||||||
|
- Definition
Natural Gas Propane NGLs Condensate Revenue to Affiliates No definition available.
|
| X | ||||||||||
|
- Definition
Omnibus Agreement No definition available.
|
| X | ||||||||||
|
- Definition
Parental Guarantees Issued No definition available.
|
| X | ||||||||||
|
- Definition
Propane Supply No definition available.
|
| X | ||||||||||
|
- Definition
Settlement receivable No definition available.
|
| X | ||||||||||
|
- Definition
Transportation Processing And Other To Affiliates No definition available.
|
| X | ||||||||||
|
- Definition
Percentage of voting equity interests acquired in the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This element represents disclosure of the total aggregate cash dividends paid to the entity by consolidated subsidiaries, by unconsolidated subsidiaries, and by 50% or less owned persons accounted for using the equity method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. No definition available.
|
| X | ||||||||||
|
- Definition
The parent entity's interest in net assets of the subsidiary, expressed as a percentage. No definition available.
|
| X | ||||||||||
|
- Definition
Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This element represents a sum total of expenses not separately reflected on the income statement for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash inflow from parent as a source of financing that is recorded as additional paid in capital. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash inflow from sale of machinery and equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Description of the terms and manner of settlement of the related party transaction. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Agreements and Transactions with Affiliates (Transactions with Affiliates) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
||||||||||||
| Related Party Transaction [Line Items] | ||||||||||||||
| Sales of natural gas, propane, NGLs and condensate | $ 1,465.9 | $ 2,178.5 | [1] | $ 1,975.1 | [2] | |||||||||
| Transportation, processing and other | 185.0 | 172.2 | [1] | 130.3 | [2] | |||||||||
| Purchases of natural gas, propane and NGLs | 1,301.5 | 1,933.0 | [1] | 1,783.1 | [2] | |||||||||
| (Losses) gains from commodity derivative activity, net | 69.8 | 7.7 | [1] | 3.0 | [2] | |||||||||
| General and administrative expense | 45.8 | 48.3 | [1] | 45.8 | [2] | |||||||||
| Interest expense | 42.2 | 33.9 | [1] | 29.1 | [2] | |||||||||
| Other income | (3.0) | |||||||||||||
|
Affiliated Entity [Member] | DCP Midstream, LLC [Member]
|
||||||||||||||
| Related Party Transaction [Line Items] | ||||||||||||||
| Sales of natural gas, propane, NGLs and condensate | 721.4 | 1,058.7 | 881.2 | |||||||||||
| Transportation, processing and other | 35.5 | 26.0 | 12.1 | |||||||||||
| Purchases of natural gas, propane and NGLs | 134.4 | 185.8 | 183.9 | |||||||||||
| (Losses) gains from commodity derivative activity, net | 52.6 | 0.2 | (1.9) | |||||||||||
| Operating and maintenance expense | 0.6 | 0.6 | ||||||||||||
| General and administrative expense | 29.3 | 29.1 | 31.3 | |||||||||||
| Interest expense | 0.3 | 0.4 | 0.2 | |||||||||||
|
Affiliated Entity [Member] | Spectra Energy [Member]
|
||||||||||||||
| Related Party Transaction [Line Items] | ||||||||||||||
| Transportation, processing and other | 0.1 | 0.2 | ||||||||||||
| Purchases of natural gas, propane and NGLs | 113.1 | [3] | 249.6 | [3] | 82.1 | [3] | ||||||||
| Operating and maintenance expense | 0.1 | (0.3) | ||||||||||||
| Other income | 3.0 | |||||||||||||
|
Affiliated Entity [Member] | ConocoPhillips [Member]
|
||||||||||||||
| Related Party Transaction [Line Items] | ||||||||||||||
| Sales of natural gas, propane, NGLs and condensate | 9.0 | [4] | 52.2 | [4] | 43.0 | [4] | ||||||||
| Transportation, processing and other | 2.3 | [4] | 7.4 | [4] | 9.9 | [4] | ||||||||
| Purchases of natural gas, propane and NGLs | 1.3 | [4] | 5.8 | [4] | 7.4 | [4] | ||||||||
| (Losses) gains from commodity derivative activity, net | (0.4) | [4] | ||||||||||||
| General and administrative expense | 0.1 | [4] | 0.3 | [4] | 0.2 | [4] | ||||||||
|
Affiliated Entity [Member] | Phillips 66 [Member]
|
||||||||||||||
| Related Party Transaction [Line Items] | ||||||||||||||
| Sales of natural gas, propane, NGLs and condensate | 0.5 | [4] | ||||||||||||
| General and administrative expense | 0.2 | [4] | ||||||||||||
|
Affiliated Entity [Member] | Unconsolidated Affiliates [Member]
|
||||||||||||||
| Related Party Transaction [Line Items] | ||||||||||||||
| Purchases of natural gas, propane and NGLs | $ 2.4 | $ 6.0 | $ 4.8 | |||||||||||
|
||||||||||||||
| X | ||||||||||
|
- Definition
Gains (losses) from commodity derivative activity, net. No definition available.
|
| X | ||||||||||
|
- Definition
Natural gas, propane, NGLs and condensate purchases. No definition available.
|
| X | ||||||||||
|
- Definition
Sales of natural gas, propane, NGLs and condensate. No definition available.
|
| X | ||||||||||
|
- Definition
Other Income Affiliates No definition available.
|
| X | ||||||||||
|
- Definition
Revenue related to midstream and downstream gas activities. May include the following: gathering from wells, processing to remove impurities, storage, transmission, and the sale of natural gas and related products. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cost of borrowed funds accounted for as interest that was charged against earnings during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Discloses the amount of operating expense for the period for routine plant maintenance and repairs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Agreements and Transactions with Affiliates (Transactions with Affiliates) (Parenthetical) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended |
|---|---|
|
Dec. 31, 2010
|
|
| Related Party Transaction [Line Items] | |
| Damage reimburse payment | $ 17.0 |
| X | ||||||||||
|
- Definition
Damage reimburse payment. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Unrealized Gains On Derivative Instruments Related Parties Current No definition available.
|
| X | ||||||||||
|
- Definition
Unrealized gains on derivative instruments, related parties - noncurrent No definition available.
|
| X | ||||||||||
|
- Definition
Unrealized Losses On Derivative Instruments Related Parties Current No definition available.
|
| X | ||||||||||
|
- Definition
Unrealized losses on derivative instruments, related parties - noncurrent No definition available.
|
| X | ||||||||||
|
- Definition
Amount for accounts payable to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of receivables arising from transactions with related parties due within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Inventories (Schedule of Inventories) (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
|||
|---|---|---|---|---|---|
| Components Of Inventory [Line Items] | |||||
| Total inventories | $ 74.7 | $ 87.9 | [1] | ||
|
Natural Gas [Member]
|
|||||
| Components Of Inventory [Line Items] | |||||
| Total inventories | 22.1 | 25.6 | |||
|
Natural Gas Liquids [Member]
|
|||||
| Components Of Inventory [Line Items] | |||||
| Total inventories | $ 52.6 | $ 62.3 | |||
|
|||||
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Inventories (Narrative) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Inventories Net [Line Items] | ||
| Lower of cost or market adjustments | $ 19.3 | $ 6.4 |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Lower Of Cost Or Market Adjustment No definition available.
|
|
Property, Plant and Equipment (Classification of Property, Plant and Equipment) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | 12 Months Ended | 12 Months Ended | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2012
Gathering and Transmission Systems [Member]
|
Dec. 31, 2011
Gathering and Transmission Systems [Member]
|
Dec. 31, 2012
Gathering and Transmission Systems [Member]
Minimum [Member]
|
Dec. 31, 2011
Gathering and Transmission Systems [Member]
Maximum [Member]
|
Dec. 31, 2012
Processing, Storage, and Terminal Facilities [Member]
|
Dec. 31, 2011
Processing, Storage, and Terminal Facilities [Member]
|
Dec. 31, 2012
Processing, Storage, and Terminal Facilities [Member]
Minimum [Member]
|
Dec. 31, 2011
Processing, Storage, and Terminal Facilities [Member]
Maximum [Member]
|
Dec. 31, 2012
Other Energy Equipment [Member]
|
Dec. 31, 2011
Other Energy Equipment [Member]
|
Dec. 31, 2012
Other Energy Equipment [Member]
Minimum [Member]
|
Dec. 31, 2011
Other Energy Equipment [Member]
Maximum [Member]
|
Dec. 31, 2012
Construction Work In Progress [Member]
|
Dec. 31, 2011
Construction Work In Progress [Member]
|
||||
| Property, Plant and Equipment [Line Items] | |||||||||||||||||||
| Depreciable Life of Property, Plant and Equipment | 20 years | 50 years | 35 years | 60 years | 3 years | 30 years | |||||||||||||
| Property, plant and equipment | $ 2,479.1 | $ 2,196.1 | $ 1,325.1 | $ 1,211.9 | $ 822.6 | $ 742.8 | $ 26.4 | $ 23.1 | $ 305.0 | $ 218.3 | |||||||||
| Accumulated depreciation | (751.7) | (696.7) | |||||||||||||||||
| Property, plant and equipment, net | $ 1,727.4 | $ 1,499.4 | [1] | ||||||||||||||||
|
|||||||||||||||||||
| X | ||||||||||
|
- Definition
The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
|
|
Property, Plant and Equipment (Narrative) (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
|
Mar. 31, 2012
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
| Property, Plant and Equipment [Line Items] | ||||
| Interest capitalized on construction projects | $ 7.2 | $ 1.6 | $ 0.2 | |
| Basic Earnings Per Share Adjustment, Pro Forma | $ 0.66 | |||
| Depreciation expense | 55.0 | 92.2 | 83.2 | |
| Asset retirement obligations | 16.9 | 12.4 | ||
| Increase in asset retirement obligations | 4.3 | |||
| Accretion expense | 0.1 | 0.7 | 0.7 | |
|
Property and Equipment [Member]
|
||||
| Property, Plant and Equipment [Line Items] | ||||
| Reduction in depreciation expense | $ 35.7 | |||
| X | ||||||||||
|
- Definition
Depreciation Expenses No definition available.
|
| X | ||||||||||
|
- Definition
Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Pro Forma Basic Earnings Per Share Adjustment to reconcile between Net Income and Pro Forma. No definition available.
|
| X | ||||||||||
|
- Definition
The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The increase (decrease) during the reporting period in the carrying amount of asset retirement obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of interest capitalized during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Goodwill and Intangible Assets (Changes in Carrying Amount of Goodwill) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2011
|
Dec. 31, 2012
|
|
| Goodwill [Line Items] | ||
| Beginning of period | $ 151.2 | $ 153.8 |
| Acquisitions | 2.6 | |
| End of period | $ 153.8 | $ 153.8 |
| X | ||||||||||
|
- Definition
Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Goodwill and Intangible Assets (Narrative) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
| Goodwill [Line Items] | |||
| Goodwill | $ 153.8 | $ 153.8 | $ 151.2 |
| Amortization expense | 8.4 | 8.4 | 4.9 |
| Amortization period, weighted-average remaining period, in years | 18 years | ||
|
Minimum [Member]
|
|||
| Goodwill [Line Items] | |||
| Amortization period, weighted-average remaining period, in years | 9 years | ||
|
Maximum [Member]
|
|||
| Goodwill [Line Items] | |||
| Amortization period, weighted-average remaining period, in years | 23 years | ||
|
Natural Gas Services [Member]
|
|||
| Goodwill [Line Items] | |||
| Goodwill | 82.2 | 82.2 | |
|
Wholesale Propane Logistics [Member]
|
|||
| Goodwill [Line Items] | |||
| Goodwill | 36.9 | 36.9 | |
|
NGL Logistics [Member]
|
|||
| Goodwill [Line Items] | |||
| Goodwill | $ 34.7 | $ 34.7 | |
| X | ||||||||||
|
- Definition
The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
|
| X | ||||||||||
|
- Definition
Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Goodwill and Intangible Assets (Schedule of Intangible Assets) (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
|---|---|---|
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross carrying amount | $ 164.3 | $ 164.3 |
| Accumulated amortization | (27.4) | (19.0) |
| Intangible assets, net | $ 136.9 | $ 145.3 |
| X | ||||||||||
|
- Definition
Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Goodwill and Intangible Assets (Finite Lived Intangible Assets Future Amortization Expense) (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
|---|---|---|
| Finite-Lived Intangible Assets [Line Items] | ||
| 2013 | $ 8.4 | |
| 2014 | 8.4 | |
| 2015 | 8.4 | |
| 2016 | 8.4 | |
| 2017 | 8.4 | |
| Thereafter | 94.9 | |
| Intangible assets, net | $ 136.9 | $ 145.3 |
| X | ||||||||||
|
- Definition
Amount of amortization expense expected to be recognized after the fifth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. No definition available.
|
| X | ||||||||||
|
- Definition
Amount of amortization expense expected to be recognized during the next fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of amortization expense expected to be recognized during the fifth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of amortization expense expected to be recognized during the fourth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of amortization expense expected to be recognized during the third fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of amortization expense expected to be recognized during the second fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Investments In Unconsolidated Affiliates (Investments In Unconsolidated Affiliates) (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
|---|---|---|
| Investments in and Advances to Affiliates [Line Items] | ||
| Investments in unconsolidated affiliates | $ 558.0 | $ 107.1 |
|
Eagle Ford System [Member]
|
||
| Investments in and Advances to Affiliates [Line Items] | ||
| Ownership interest percentage | 33.33% | |
| Investments in unconsolidated affiliates | 255.2 | |
|
Discovery Producer Services LLC [Member]
|
||
| Investments in and Advances to Affiliates [Line Items] | ||
| Ownership interest percentage | 40.00% | |
| Investments in unconsolidated affiliates | 222.9 | 106.9 |
|
Texas Express [Member]
|
||
| Investments in and Advances to Affiliates [Line Items] | ||
| Ownership interest percentage | 10.00% | |
| Investments in unconsolidated affiliates | 40.8 | |
|
Mont Belvieu Enterprise Fractionator [Member]
|
||
| Investments in and Advances to Affiliates [Line Items] | ||
| Ownership interest percentage | 12.50% | |
| Investments in unconsolidated affiliates | 18.5 | |
|
Mont Belvieu 1 Fractionator [Member]
|
||
| Investments in and Advances to Affiliates [Line Items] | ||
| Ownership interest percentage | 20.00% | |
| Investments in unconsolidated affiliates | 14.3 | |
|
CrossPoint Pipeline, LLC [Member]
|
||
| Investments in and Advances to Affiliates [Line Items] | ||
| Ownership interest percentage | 50.00% | |
| Investments in unconsolidated affiliates | 6.2 | |
|
Other [Member]
|
||
| Investments in and Advances to Affiliates [Line Items] | ||
| Ownership interest percentage | 50.00% | |
| Investments in unconsolidated affiliates | $ 0.1 | $ 0.2 |
| X | ||||||||||
|
- Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Investments In Unconsolidated Affiliates (Narrative) (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
|---|---|---|
|
Discovery Producer Services LLC [Member]
|
||
| Investments in and Advances to Affiliates [Line Items] | ||
| Carrying amount of the investment and the underlying equity | $ 30.2 | $ 32.6 |
|
Mont Belvieu 1 Fractionator [Member]
|
||
| Investments in and Advances to Affiliates [Line Items] | ||
| Carrying amount of the investment and the underlying equity | $ 5.5 |
| X | ||||||||||
|
- Definition
Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Investments in Unconsolidated Affiliates (Earnings from Investments in Unconsolidated Affiliates) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|||||||||
| Investments in and Advances to Affiliates [Line Items] | |||||||||||
| Earnings from unconsolidated affiliates | $ 28.9 | $ 22.7 | [1] | $ 23.8 | [2] | ||||||
|
Eagle Ford System [Member]
|
|||||||||||
| Investments in and Advances to Affiliates [Line Items] | |||||||||||
| Earnings from unconsolidated affiliates | 2.8 | ||||||||||
|
Discovery Producer Services LLC [Member]
|
|||||||||||
| Investments in and Advances to Affiliates [Line Items] | |||||||||||
| Earnings from unconsolidated affiliates | 14.6 | 22.7 | 23.0 | ||||||||
|
Mont Belvieu Enterprise Fractionator [Member]
|
|||||||||||
| Investments in and Advances to Affiliates [Line Items] | |||||||||||
| Earnings from unconsolidated affiliates | 5.3 | ||||||||||
|
Mont Belvieu 1 Fractionator [Member]
|
|||||||||||
| Investments in and Advances to Affiliates [Line Items] | |||||||||||
| Earnings from unconsolidated affiliates | 6.0 | ||||||||||
|
CrossPoint Pipeline, LLC [Member]
|
|||||||||||
| Investments in and Advances to Affiliates [Line Items] | |||||||||||
| Earnings from unconsolidated affiliates | 0.2 | ||||||||||
|
Other [Member]
|
|||||||||||
| Investments in and Advances to Affiliates [Line Items] | |||||||||||
| Earnings from unconsolidated affiliates | $ 0.8 | [3] | |||||||||
|
|||||||||||
| X | ||||||||||
|
- Definition
This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Investments in Unconsolidated Affiliates (Earnings from Investments in Unconsolidated Affiliates) (Parenthetical) (Detail)
|
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2011
Black Lake [Member]
|
Jul. 30, 2010
BP PLC [Member]
Black Lake [Member]
|
Dec. 31, 2012
DCP Midstream, LLC [Member]
|
Jul. 27, 2010
DCP Midstream, LLC [Member]
Black Lake [Member]
|
|
| Investments in and Advances to Affiliates [Line Items] | ||||
| Previously acquired ownership interest | 50.00% | 46.67% | 5.00% | |
| Percentage of ownership | 100.00% |
| X | ||||||||||
|
- Definition
Percentage of voting equity interests acquired in the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Investments in Unconsolidated Affiliates (Equity Method Investment Summarized Financial Information, Statement of Operations) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |||||
|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
||||
| Operating revenue | $ 394.4 | $ 210.7 | $ 211.6 | [1] | ||
| Operating expenses | 284.1 | 159.9 | 156.7 | [1] | ||
| Net income | $ 110.0 | $ 50.8 | $ 52.7 | [1] | ||
|
||||||
| X | ||||||||||
|
- Definition
Equity Method Investment Summarized Financial Information Operating Expenses No definition available.
|
| X | ||||||||||
|
- Definition
The amount of net income (loss) reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an equity method investment of the entity. No definition available.
|
|
Investments In Unconsolidated Affiliates (Equity Method Investment Summarized Financial Information, Balance Sheet) (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
|---|---|---|
| Current assets | $ 187.1 | $ 38.1 |
| Long-term assets | 2,111.2 | 359.9 |
| Current liabilities | (185.8) | (20.4) |
| Long-term liabilities | (51.6) | (28.5) |
| Net assets | $ 2,060.9 | $ 349.1 |
| X | ||||||||||
|
- Definition
The amount of assets reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of current assets reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of current liabilities reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of noncurrent assets reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of noncurrent liabilities reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Fair Value Measurement (Financial Instruments Carried At Fair Value) (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Commodity Derivative [Member] | Current Assets [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Commodity derivatives | $ 49.4 | [1] | $ 41.2 | [1] | ||||||||
|
Commodity Derivative [Member] | Long-Term Assets [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Commodity derivatives | 69.8 | [2] | 6.4 | [2] | ||||||||
|
Commodity Derivative [Member] | Current Liabilities [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Commodity derivatives | (26.9) | [3] | (43.8) | [3] | ||||||||
|
Commodity Derivative [Member] | Long-Term Liabilities [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Commodity derivatives | (5.7) | [4] | (27.8) | [4] | ||||||||
|
Interest Rate Derivatives [Member] | Current Liabilities [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Interest rate derivatives | (4.1) | [3] | (16.1) | [3] | ||||||||
|
Interest Rate Derivatives [Member] | Long-Term Liabilities [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Interest rate derivatives | (2.0) | [4] | (5.0) | [4] | ||||||||
|
Fair Value, Inputs, Level 1 [Member] | Commodity Derivative [Member] | Current Assets [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Commodity derivatives | [1] | |||||||||||
|
Fair Value, Inputs, Level 1 [Member] | Commodity Derivative [Member] | Long-Term Assets [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Commodity derivatives | [2] | |||||||||||
|
Fair Value, Inputs, Level 1 [Member] | Commodity Derivative [Member] | Current Liabilities [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Commodity derivatives | [3] | |||||||||||
|
Fair Value, Inputs, Level 1 [Member] | Commodity Derivative [Member] | Long-Term Liabilities [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Commodity derivatives | [4] | |||||||||||
|
Fair Value, Inputs, Level 1 [Member] | Interest Rate Derivatives [Member] | Current Liabilities [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Interest rate derivatives | [3] | |||||||||||
|
Fair Value, Inputs, Level 1 [Member] | Interest Rate Derivatives [Member] | Long-Term Liabilities [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Interest rate derivatives | [4] | |||||||||||
|
Fair Value, Inputs, Level 2 [Member] | Commodity Derivative [Member] | Current Assets [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Commodity derivatives | 9.4 | [1] | 40.1 | [1] | ||||||||
|
Fair Value, Inputs, Level 2 [Member] | Commodity Derivative [Member] | Long-Term Assets [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Commodity derivatives | 5.1 | [2] | 5.4 | [2] | ||||||||
|
Fair Value, Inputs, Level 2 [Member] | Commodity Derivative [Member] | Current Liabilities [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Commodity derivatives | (26.7) | [3] | (43.1) | [3] | ||||||||
|
Fair Value, Inputs, Level 2 [Member] | Commodity Derivative [Member] | Long-Term Liabilities [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Commodity derivatives | (5.5) | [4] | (27.5) | [4] | ||||||||
|
Fair Value, Inputs, Level 2 [Member] | Interest Rate Derivatives [Member] | Current Liabilities [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Interest rate derivatives | (4.1) | [3] | (16.1) | [3] | ||||||||
|
Fair Value, Inputs, Level 2 [Member] | Interest Rate Derivatives [Member] | Long-Term Liabilities [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Interest rate derivatives | (2.0) | [4] | (5.0) | [4] | ||||||||
|
Fair Value, Inputs, Level 3 [Member] | Commodity Derivative [Member] | Current Assets [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Commodity derivatives | 40.0 | [1] | 1.1 | [1] | ||||||||
|
Fair Value, Inputs, Level 3 [Member] | Commodity Derivative [Member] | Long-Term Assets [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Commodity derivatives | 64.7 | [2] | 1.0 | [2] | ||||||||
|
Fair Value, Inputs, Level 3 [Member] | Commodity Derivative [Member] | Current Liabilities [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Commodity derivatives | (0.2) | [3] | (0.7) | [3] | ||||||||
|
Fair Value, Inputs, Level 3 [Member] | Commodity Derivative [Member] | Long-Term Liabilities [Member]
|
||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Commodity derivatives | $ (0.2) | [4] | $ (0.3) | [4] | ||||||||
|
||||||||||||
| X | ||||||||||
|
- Definition
Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Fair Value Measurement (Condensed Consolidated Balance Sheets For Derivative Financial Instruments) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
||||||||||||||
|
Current Liabilities [Member]
|
||||||||||||||||
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | ||||||||||||||||
| Beginning balance | $ (0.7) | [1],[2] | $ (0.1) | [1] | $ (1.6) | |||||||||||
| Net realized and unrealized gains (losses) included in earnings | (0.8) | [1],[3] | (0.3) | [3] | ||||||||||||
| Transfers into Level 3 | [2],[4] | [1],[4] | [4] | |||||||||||||
| Transfers out of Level 3 | [2],[4] | [1],[4] | 0.3 | [4] | ||||||||||||
| Settlements | 0.5 | [2] | 0.2 | [1] | ||||||||||||
| Purchases, Issuances and Settlements, net | 1.5 | |||||||||||||||
| Purchases | [2] | |||||||||||||||
| Ending balance | (0.2) | [2] | (0.7) | [1],[2] | (0.1) | [1] | ||||||||||
| Net unrealized gains (losses) still held included in earnings | (0.3) | [2],[3] | (0.7) | [1],[3] | (0.1) | [3] | ||||||||||
|
Long-Term Liabilities [Member]
|
||||||||||||||||
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | ||||||||||||||||
| Beginning balance | (0.3) | [1],[2] | (0.5) | [1] | (0.7) | |||||||||||
| Net realized and unrealized gains included in earnings | 0.1 | [2],[3] | ||||||||||||||
| Net realized and unrealized gains (losses) included in earnings | 0.2 | [1],[3] | 0.2 | [3] | ||||||||||||
| Transfers into Level 3 | [2],[4] | [1],[4] | [4] | |||||||||||||
| Transfers out of Level 3 | [2],[4] | [1],[4] | ||||||||||||||
| Purchases | [2] | |||||||||||||||
| Ending balance | (0.2) | [2] | (0.3) | [1],[2] | (0.5) | [1] | ||||||||||
| Net unrealized gains (losses) still held included in earnings | 0.2 | [2],[3] | 0.1 | [1],[3] | (0.1) | [3] | ||||||||||
|
Current Assets [Member]
|
||||||||||||||||
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | ||||||||||||||||
| Beginning balance | 1.1 | [1],[2],[5] | 0.3 | [1] | 1.2 | |||||||||||
| Net realized and unrealized gains included in earnings | 14.3 | [2],[3] | ||||||||||||||
| Net realized and unrealized gains (losses) included in earnings | 1.4 | [1],[3] | 2.1 | [3] | ||||||||||||
| Transfers into Level 3 | [2],[4] | [1],[4] | [4] | |||||||||||||
| Transfers out of Level 3 | [2],[4] | (0.5) | [4] | |||||||||||||
| Settlements | (2.3) | [2] | (0.6) | [1] | ||||||||||||
| Purchases, Issuances and Settlements, net | (2.5) | |||||||||||||||
| Purchases | 26.9 | [2],[5] | ||||||||||||||
| Ending balance | 40.0 | [2] | 1.1 | [1],[2],[5] | 0.3 | [1] | ||||||||||
| Net unrealized gains (losses) still held included in earnings | 13.2 | [2],[3] | 1.1 | [1],[3] | 0.3 | |||||||||||
|
Long-Term Assets [Member]
|
||||||||||||||||
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | ||||||||||||||||
| Beginning balance | 1.0 | [1],[2],[5] | 0.3 | [1] | 0.7 | |||||||||||
| Net realized and unrealized gains included in earnings | 2.2 | [2],[3] | ||||||||||||||
| Net realized and unrealized gains (losses) included in earnings | 0.8 | [1],[3] | 0.8 | [3] | ||||||||||||
| Transfers into Level 3 | [2],[4] | [1],[4] | [4] | |||||||||||||
| Transfers out of Level 3 | [2],[4] | (0.1) | [1],[4] | |||||||||||||
| Purchases, Issuances and Settlements, net | (1.2) | |||||||||||||||
| Purchases | 61.5 | [2],[5] | ||||||||||||||
| Ending balance | 64.7 | [2] | 1.0 | [1],[2],[5] | 0.3 | [1] | ||||||||||
| Net unrealized gains (losses) still held included in earnings | $ 2.2 | [2],[3] | $ 0.7 | [1],[3] | $ 0.1 | |||||||||||
|
||||||||||||||||
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
This item represents the amount of the total change in unrealized (holding) gains or losses for the period which are included in the statement of income (or changes in net assets) in trading revenue. Such unrealized (holding) gains or losses relate to those liabilities still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Transfers into liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy that have taken place during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Transfers out of liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy that have taken place during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of gain (loss) recognized in earnings, arising from assets measured at fair value on a recurring basis using unobservable inputs (level 3). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Purchases that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of gain (loss) recognized in earnings, arising from liabilities measured at fair value on a recurring basis using unobservable inputs (level 3). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of purchases, sales, issues, and settlements in relation to liabilities measured at fair value on a recurring basis using unobservable inputs (level 3). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Settlements that have taken place during the period in relation to liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This element represents a liability measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Fair Value Measurement (Schedule Of Valuation Processes) (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
|---|---|
|
Natural Gas Liquids [Member]
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | |
| Fair Value, Assets | $ 98.6 |
|
Natural Gas [Member]
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | |
| Fair Value, Assets | 6.1 |
| Fair Value, Liabilities | $ (0.4) |
|
Minimum [Member] | Natural Gas Liquids [Member]
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | |
| Forward Curve Range | 0.25 |
|
Minimum [Member] | Natural Gas [Member]
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | |
| Forward Curve Range | 3.69 |
|
Minimum [Member] | Natural Gas [Member]
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | |
| Forward Curve Range | 3.81 |
|
Maximum [Member] | Natural Gas Liquids [Member]
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | |
| Forward Curve Range | 2.13 |
|
Maximum [Member] | Natural Gas [Member]
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | |
| Forward Curve Range | 4.48 |
|
Maximum [Member] | Natural Gas [Member]
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | |
| Forward Curve Range | 4.27 |
| X | ||||||||||
|
- Definition
This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The forward price on the price risk forward or futures contract, such as a gas futures contract. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
This element represents the aggregate of the liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Fair Value Measurement (Narrative) (Detail) (USD $)
In Millions, unless otherwise specified |
Feb. 22, 2013
|
Nov. 30, 2012
|
Nov. 27, 2012
|
Mar. 30, 2012
|
Mar. 13, 2012
|
Sep. 30, 2010
|
Dec. 31, 2012
Senior Notes, 2.50% Due 2017 [Member]
|
Dec. 31, 2012
Senior Notes, 3.25% Due 2015 [Member]
|
Dec. 31, 2011
Senior Notes, 3.25% Due 2015 [Member]
|
Sep. 30, 2010
Senior Notes, 3.25% Due 2015 [Member]
|
Dec. 31, 2012
Senior Notes, 4.95% Due 2022 [Member]
|
Mar. 31, 2012
Senior Notes, 4.95% Due 2022 [Member]
|
Jan. 03, 2012
Senior Notes, 4.95% Due 2022 [Member]
|
Dec. 31, 2012
Credit Agreement [Member]
|
Dec. 31, 2011
Credit Agreement [Member]
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | |||||||||||||||
| Carrying value of outstanding balances | $ 525.0 | $ 497.0 | |||||||||||||
| Senior notes interest rate percentage | 2.50% | 2.50% | 2.50% | 4.95% | 4.95% | 3.25% | 2.50% | 3.25% | 3.25% | 4.95% | 4.95% | 4.95% | |||
| Debt Instrument, Face Amount | 500.0 | 500.0 | 250.0 | 250.0 | 250.0 | 350.0 | 350.0 | ||||||||
| Debt Instrument, Fair Value | $ 258.8 | $ 373.9 |
| X | ||||||||||
|
- Definition
The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Interest rate stated in the contractual debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Fair value of the amount outstanding under the credit facility. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Debt (Schedule of Long-Term Debt) (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Nov. 30, 2012
|
Dec. 31, 2011
|
Dec. 31, 2012
Senior Notes, 2.50% Due 2017 [Member]
|
Dec. 31, 2012
Senior Notes, 4.95% Due 2022 [Member]
|
Mar. 31, 2012
Senior Notes, 4.95% Due 2022 [Member]
|
Dec. 31, 2012
Senior Notes, 3.25% Due 2015 [Member]
|
Dec. 31, 2011
Senior Notes, 3.25% Due 2015 [Member]
|
Sep. 30, 2010
Senior Notes, 3.25% Due 2015 [Member]
|
Dec. 31, 2012
Minimum [Member]
|
Dec. 31, 2011
Minimum [Member]
|
Dec. 31, 2012
Maximum [Member]
|
Dec. 31, 2011
Maximum [Member]
|
Dec. 31, 2012
Credit Agreement [Member]
|
Dec. 31, 2011
Credit Agreement [Member]
|
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Line of Credit Facility [Line Items] | ||||||||||||||||||||||
| Fair value of outstanding balances | $ 525.0 | [1] | $ 497.0 | [1] | ||||||||||||||||||
| Debt Securities Issued March 13, 2012, interest at 4.95% payable semi-annually, due April 1, 2022 | 500.0 | 500.0 | 350.0 | 350.0 | 250.0 | 250.0 | 250.0 | |||||||||||||||
| Unamortized discount | (4.7) | (0.2) | ||||||||||||||||||||
| Total long-term debt | 1,620.3 | 746.8 | [2] | |||||||||||||||||||
| Net effective interest rate | 2.94% | 2.94% | 2.99% | 5.19% | 2.25% | 4.86% | ||||||||||||||||
| Derivative hedge amount | $ 150.0 | $ 450.0 | ||||||||||||||||||||
|
||||||||||||||||||||||
| X | ||||||||||
|
- Definition
The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount borrowed under the credit facility as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate notional amount of interest rate derivatives, which relates to the currency amount specified in the interest rate derivative instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Debt (Schedule of Long-Term Debt) (Parenthetical) (Detail)
|
1 Months Ended | 12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
|
Nov. 27, 2012
|
Nov. 30, 2012
|
Mar. 13, 2012
|
Sep. 30, 2010
|
Dec. 31, 2012
|
Feb. 22, 2013
|
Mar. 30, 2012
|
Dec. 31, 2011
|
|
| Line of Credit Facility [Line Items] | ||||||||
| Weighted-average variable interest rate | 1.47% | 1.69% | ||||||
| Interest payable semi-annually | 2.50% | 2.50% | 4.95% | 3.25% | 2.50% | 4.95% | ||
| Line of credit facility, maturity date | Nov. 10, 2016 | |||||||
| Maturity date | Dec. 01, 2017 | Dec. 01, 2017 | Apr. 01, 2022 | Oct. 01, 2015 | ||||
| X | ||||||||||
|
- Definition
Interest rate stated in the contractual debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Reflects the calculation as of the balance sheet date of the average interest rate weighted by the amount of debt outstanding by type or by instrument at that time. No definition available.
|
| X | ||||||||||
|
- Definition
Date the credit facility terminates, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Debt (Narrative) (Detail) (USD $)
|
1 Months Ended | 12 Months Ended | 1 Months Ended | 1 Months Ended | 12 Months Ended | 12 Months Ended | |||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Nov. 27, 2012
|
Nov. 30, 2012
|
Mar. 13, 2012
|
Sep. 30, 2010
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Feb. 22, 2013
|
Mar. 30, 2012
|
Dec. 31, 2012
East Texas System [Member]
|
Jan. 31, 2012
East Texas System [Member]
|
Jan. 03, 2012
East Texas System [Member]
|
Dec. 31, 2012
Southeast Texas [Member]
|
Sep. 30, 2012
Southeast Texas [Member]
|
Mar. 31, 2012
Southeast Texas [Member]
|
Mar. 30, 2012
Southeast Texas [Member]
|
Jan. 31, 2011
Southeast Texas [Member]
|
Mar. 31, 2012
Senior Notes, 4.95% Due 2022 [Member]
|
Dec. 31, 2012
Senior Notes, 4.95% Due 2022 [Member]
|
Jan. 03, 2012
Senior Notes, 4.95% Due 2022 [Member]
|
Mar. 31, 2012
Senior Notes, 4.95% Due 2022 [Member]
Southeast Texas [Member]
|
Sep. 30, 2010
Senior Notes, 3.25% Due 2015 [Member]
|
Dec. 31, 2012
Senior Notes, 3.25% Due 2015 [Member]
|
Dec. 31, 2011
Senior Notes, 3.25% Due 2015 [Member]
|
Dec. 31, 2012
343.5 million Term Loan [Member]
|
Dec. 31, 2012
Acquisition 1 [Member]
Numerator [Member]
|
Dec. 31, 2012
Acquisition 1 [Member]
Denominator [Member]
|
Dec. 31, 2012
Credit Agreement [Member]
|
Dec. 31, 2011
Credit Agreement [Member]
|
Dec. 31, 2012
Credit Agreement [Member]
Numerator [Member]
|
Dec. 31, 2012
Credit Agreement [Member]
Denominator [Member]
|
Jul. 02, 2012
Term Loan Agreement [Member]
|
Jan. 03, 2012
Term Loan Agreement [Member]
|
|||||||
| Debt Instrument [Line Items] | |||||||||||||||||||||||||||||||||||||||
| Revolving credit facility | $ 1,000,000,000 | ||||||||||||||||||||||||||||||||||||||
| Line of credit facility, maturity date | Nov. 10, 2016 | Nov. 10, 2016 | |||||||||||||||||||||||||||||||||||||
| Letters of credit issued | 1,000,000 | 1,100,000 | |||||||||||||||||||||||||||||||||||||
| Letters of credit outstanding | 1,000,000 | 1,100,000 | |||||||||||||||||||||||||||||||||||||
| Unused capacity under the credit agreement | 474,000,000 | ||||||||||||||||||||||||||||||||||||||
| Line of credit facility interest rate description | (1) LIBOR, plus an applicable margin of 1.25% based on our current credit rating; or (2) (a) the base rate which shall be the higher of Wells Fargo Bank N.A.'s prime rate, the Federal Funds rate plus 0.50% or the LIBOR Market Index rate plus 1%, plus (b) an applicable margin of 0.25% based on our current credit rating | ||||||||||||||||||||||||||||||||||||||
| Annual facility fee description | The revolving credit facility incurs an annual facility fee of 0.25% based on our current credit rating | ||||||||||||||||||||||||||||||||||||||
| Leverage ratio | 5.5 | 1.0 | 5.0 | 1.0 | |||||||||||||||||||||||||||||||||||
| Senior notes issued | 500,000,000 | 350,000,000 | 350,000,000 | 250,000,000 | 250,000,000 | 250,000,000 | |||||||||||||||||||||||||||||||||
| Senior notes interest rate percentage | 2.50% | 2.50% | 4.95% | 3.25% | 2.50% | 4.95% | 4.95% | 4.95% | 4.95% | 3.25% | 3.25% | ||||||||||||||||||||||||||||
| Maturity date | Dec. 01, 2017 | Dec. 01, 2017 | Apr. 01, 2022 | Oct. 01, 2015 | Apr. 01, 2022 | Oct. 01, 2015 | |||||||||||||||||||||||||||||||||
| Proceeds from debt | 493,600,000 | 2,664,800,000 | 1,524,000,000 | [1] | 868,200,000 | [2] | 345,800,000 | 247,700,000 | |||||||||||||||||||||||||||||||
| Underwriters' fees | 6,400,000 | 4,200,000 | 2,300,000 | ||||||||||||||||||||||||||||||||||||
| First payment date | Oct. 01, 2012 | Apr. 01, 2011 | |||||||||||||||||||||||||||||||||||||
| Acquisition of additional interest | 49.90% | 49.90% | 49.90% | 66.67% | 66.67% | 66.67% | 66.67% | 33.33% | 66.67% | ||||||||||||||||||||||||||||||
| Line of credit facility amount borrowed | $ 343,500,000 | $ 140,000,000 | $ 135,000,000 | ||||||||||||||||||||||||||||||||||||
| Ownership interest percentage owned by parent | 50.10% | 33.33% | |||||||||||||||||||||||||||||||||||||
| Term Loan period | 2 years | 2 years | |||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||
| X | ||||||||||
|
- Definition
The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. No definition available.
|
| X | ||||||||||
|
- Definition
Leverage Ratio No definition available.
|
| X | ||||||||||
|
- Definition
Term Loan Period No definition available.
|
| X | ||||||||||
|
- Definition
Percentage of voting equity interests acquired in the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Date the debt agreement requires the first payment to be made, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of the fee that accompanies borrowing money under the debt instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Interest rate stated in the contractual debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. No definition available.
|
| X | ||||||||||
|
- Definition
Description of the fees for amounts available, but unused under the credit facility. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Date the credit facility terminates, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The parent entity's interest in net assets of the subsidiary, expressed as a percentage. No definition available.
|
| X | ||||||||||
|
- Definition
The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Debt (Future Maturities of Long-Term Debt) (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
|||
|---|---|---|---|---|---|
| Schedule Of Long Term Debt Maturities [Line Items] | |||||
| 2013 | |||||
| 2014 | |||||
| 2015 | 250.0 | ||||
| 2016 | 525.0 | ||||
| Thereafter | 850.0 | ||||
| Principal, Total | 1,625.0 | ||||
| Unamortized discount | (4.7) | (0.2) | |||
| Total | $ 1,620.3 | $ 746.8 | [1] | ||
|
|||||
| X | ||||||||||
|
- Definition
Long Term Debt Maturities Repayments Of Principal Total No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Risk Management and Hedging Activities (Narrative) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | 1 Months Ended | 3 Months Ended | 1 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2012
Southeast Texas [Member]
|
Sep. 30, 2012
Southeast Texas [Member]
|
Mar. 31, 2012
Southeast Texas [Member]
|
Mar. 30, 2012
Southeast Texas [Member]
|
Jan. 31, 2011
Southeast Texas [Member]
|
Jun. 30, 2012
Interest Rate Derivatives [Member]
|
Mar. 31, 2012
Interest Rate Derivatives [Member]
|
Dec. 31, 2012
Interest Rate Derivatives [Member]
|
Dec. 31, 2011
Interest Rate Derivatives [Member]
|
Dec. 31, 2012
Interest Rate Derivatives [Member]
Minimum [Member]
|
Dec. 31, 2012
Interest Rate Derivatives [Member]
Maximum [Member]
|
Mar. 08, 2012
Forward Starting Interest Rate Swap [Member]
|
|
| Derivative [Line Items] | ||||||||||||||
| Ownership interest percentage | 66.67% | 66.67% | 66.67% | 66.67% | 33.33% | |||||||||
| 2011 Base Gas Hedge Fair Value | $ 3.3 | |||||||||||||
| Derivative maturity date | June, July and August 2013 | Q2 2012 | ||||||||||||
| Deferred loss recognized | 2.7 | 4.7 | ||||||||||||
| Derivative hedge amount | 150.0 | 450.0 | 150.0 | 450.0 | 195.0 | |||||||||
| Interest rate swap agreements reprice every thirty days | 150.0 | |||||||||||||
| Effective fixed-rates lower range | 2.94% | |||||||||||||
| Effective fixed-rates higher range | 2.99% | |||||||||||||
| Interest rate swap agreements designated as cash flow hedging instruments | 425.0 | |||||||||||||
| Mark-to-market interest rate swaps | 25.0 | |||||||||||||
| Discontinuation of cash flow hedge | 225.0 | |||||||||||||
| Derivative settlement amount | 300.0 | 6.6 | ||||||||||||
| Derivative net liability position | 22.2 | 150.0 | ||||||||||||
| Reduce in net liability due to offset of contract | 20.0 | |||||||||||||
| Liability on interest rate swap | 6.1 | |||||||||||||
| Outstanding parental guarantees | 25.0 | |||||||||||||
| Derivative, notional amount | $ 70.0 | $ 80.0 | ||||||||||||
| X | ||||||||||
|
- Definition
Deferred loss recognized in AOCI. No definition available.
|
| X | ||||||||||
|
- Definition
Derivative Settlement Amount No definition available.
|
| X | ||||||||||
|
- Definition
Derivatives Maturity Date No definition available.
|
| X | ||||||||||
|
- Definition
The amount of interest rate swap agreements that reprice prospectively approximately every 30 days No definition available.
|
| X | ||||||||||
|
- Definition
Liability On Interest Rate Swaps. No definition available.
|
| X | ||||||||||
|
- Definition
Parental guarantees issued and outstanding in favor of certain counterparties to commodity derivative instruments. No definition available.
|
| X | ||||||||||
|
- Definition
The fair value of 2011 base gas hedges as of December 31, 2012. No definition available.
|
| X | ||||||||||
|
- Definition
Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The aggregate fair value of assets needed to immediately settle the derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Percentage of voting equity interests acquired in the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
High end of the range of fixed interest rates when a range is presented for a group of interest rate derivatives. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Low end of the range of fixed interest rates when a range is presented for a group of interest rate derivatives. No definition available.
|
| X | ||||||||||
|
- Definition
The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Description of discontinued cash flow hedge relationships, including identification of hedged items and hedging instruments. Includes reasons for the discontinuation of the cash flow hedge and the effects of the discontinuation on the financial statements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate notional amount of all interest rate derivatives designated as hedging instruments in cash flow hedges. Notional amount refers to the monetary amount specified in the interest rate derivative contract. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate notional amount of all interest rate derivatives not designated as hedging instruments. Notional amount refers to the monetary amount specified in the interest rate derivative contract. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate notional amount of interest rate derivatives, which relates to the currency amount specified in the interest rate derivative instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Risk Management and Hedging Activities (Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)) (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
||||||
|---|---|---|---|---|---|---|---|---|
| Derivative [Line Items] | ||||||||
| Total AOCI | $ (14.7) | $ (21.2) | [1] | |||||
|
Commodity Derivatives [Member] | Cash Flow Hedge [Member]
|
||||||||
| Derivative [Line Items] | ||||||||
| Net deferred gain (losses) in AOCI | (5.9) | (1.8) | ||||||
|
Interest Rate Contract [Member] | Cash Flow Hedge [Member]
|
||||||||
| Derivative [Line Items] | ||||||||
| Net deferred gain (losses) in AOCI | (9.5) | (19.4) | ||||||
|
Foreign Currency [Member] | Cash Flow Hedge [Member]
|
||||||||
| Derivative [Line Items] | ||||||||
| Net deferred gain (losses) in AOCI | $ 0.7 | [2] | ||||||
|
||||||||
| X | ||||||||||
|
- Definition
Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Risk Management And Hedging Activities (Schedule Of Designated And Non-Designated Derivative Instruments In Statement Of Financial Position, Fair Value) (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
|---|---|---|
| Derivative [Line Items] | ||
| Unrealized gains on derivative instruments - current | $ 49.4 | $ 41.2 |
| Unrealized gains on derivative instruments - long-term | 69.8 | 6.4 |
| Unrealized losses on derivative instruments - current | 31.0 | 59.9 |
| Unrealized losses on derivative instruments - long-term | 7.7 | 32.8 |
|
Derivative Liabilities Designated as Hedging Instruments [Member] | Commodity Derivatives [Member]
|
||
| Derivative [Line Items] | ||
| Unrealized losses on derivative instruments - current | (3.3) | |
| Unrealized losses on derivative instruments - long-term | (2.6) | |
| Derivative liabilities, fair value, total | (3.3) | (2.6) |
|
Derivative Liabilities Designated as Hedging Instruments [Member] | Interest Rate Derivatives [Member]
|
||
| Derivative [Line Items] | ||
| Unrealized losses on derivative instruments - current | (4.1) | (15.7) |
| Unrealized losses on derivative instruments - long-term | (2.0) | (5.0) |
| Derivative liabilities, fair value, total | (6.1) | (20.7) |
|
Derivative Asset Designated as Hedging Instruments [Member] | Commodity Derivatives [Member]
|
||
| Derivative [Line Items] | ||
| Unrealized gains on derivative instruments - current | ||
| Unrealized gains on derivative instruments - long-term | ||
| Derivative assets, fair value, total | ||
|
Derivative Asset Designated as Hedging Instruments [Member] | Interest Rate Derivatives [Member]
|
||
| Derivative [Line Items] | ||
| Unrealized gains on derivative instruments - current | ||
| Unrealized gains on derivative instruments - long-term | ||
| Derivative assets, fair value, total | ||
|
Derivative Liabilities Not Designated As Hedging Instruments [Member] | Commodity Derivatives [Member]
|
||
| Derivative [Line Items] | ||
| Unrealized losses on derivative instruments - current | (23.6) | (43.8) |
| Unrealized losses on derivative instruments - long-term | (5.7) | (25.2) |
| Derivative liabilities, fair value, total | (29.3) | (69.0) |
|
Derivative Liabilities Not Designated As Hedging Instruments [Member] | Interest Rate Derivatives [Member]
|
||
| Derivative [Line Items] | ||
| Unrealized losses on derivative instruments - current | (0.4) | |
| Unrealized losses on derivative instruments - long-term | ||
| Derivative liabilities, fair value, total | (0.4) | |
|
Derivative Asset Not Designated As Hedging Instruments [Member] | Commodity Derivatives [Member]
|
||
| Derivative [Line Items] | ||
| Unrealized gains on derivative instruments - current | 49.4 | 41.2 |
| Unrealized gains on derivative instruments - long-term | 69.8 | 6.4 |
| Derivative assets, fair value, total | 119.2 | 47.6 |
|
Derivative Asset Not Designated As Hedging Instruments [Member] | Interest Rate Derivatives [Member]
|
||
| Derivative [Line Items] | ||
| Unrealized gains on derivative instruments - current | ||
| Unrealized gains on derivative instruments - long-term | ||
| Derivative assets, fair value, total |
| X | ||||||||||
|
- Definition
Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying amount as of the balance sheet date of the asset arising from derivative instruments and hedging activities, which are expected to be converted into cash or otherwise disposed of within a year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Sum as of the balance sheet date of the (a) fair values of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, and (b) the carrying amounts of the liabilities arising from financial instruments or contracts used to mitigate a specified risk (hedge), and which are expected to be extinguished or otherwise disposed of within a year or the normal operating cycle, if longer, net of the effects of master netting arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Fair value of liability arising from contracts that meet the criteria of being accounted for as derivative instruments, financial instrument or contract used to mitigate a specified risk (hedge), energy marketing activities (trading activities), expected to be settled after one year or beyond the normal operating cycle, if longer. Examples of energy marketing activities include, but are not limited to, trading of electricity, coal, natural gas and oil using financial instruments, including, but not limited to, forward contracts, options and swaps. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying amount as of the balance sheet date of the assets arising from derivative contracts and hedging activities, which are expected to be converted into cash or otherwise disposed of after a year or beyond the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate fair value of all derivative assets designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Risk Management and Hedging Activities (Schedule of Derivatives Accounted for as Cash Flow Hedges) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|||||||||||||
|
Interest Rate Derivatives [Member]
|
||||||||||||||
| Derivative [Line Items] | ||||||||||||||
| Gain (Loss) Recognized in AOCI on Derivatives - Effective Portion | $ (0.7) | $ (12.4) | ||||||||||||
| Gain (Loss) Reclassified From AOCI to Earnings-Effective Portion | (10.6) | (20.4) | [1] | |||||||||||
| Gain (Loss) Recognized in Income on Derivatives-Ineffective Portion and Amount Excluded From Effectiveness Testing | (2.1) | (0.2) | [1],[2] | |||||||||||
| Deferred Losses in AOCI Expected to be Reclassified into Earnings Over the Next 12 Months | (3.6) | |||||||||||||
| Gain/Loss Reclassified From AOCI to Earnings-Discontinuance | 0.6 | |||||||||||||
|
Commodity Derivatives [Member]
|
||||||||||||||
| Derivative [Line Items] | ||||||||||||||
| Gain (Loss) Recognized in AOCI on Derivatives - Effective Portion | (0.5) | (0.9) | ||||||||||||
| Gain (Loss) Reclassified From AOCI to Earnings-Effective Portion | (0.3) | [3] | ||||||||||||
| Gain (Loss) Recognized in Income on Derivatives-Ineffective Portion and Amount Excluded From Effectiveness Testing | (0.1) | [4] | ||||||||||||
| Deferred Losses in AOCI Expected to be Reclassified into Earnings Over the Next 12 Months | ||||||||||||||
| Gain/Loss Reclassified From AOCI to Earnings-Discontinuance | 0 | 0 | ||||||||||||
|
Foreign Currency Derivatives [Member]
|
||||||||||||||
| Derivative [Line Items] | ||||||||||||||
| Gain (Loss) Recognized in AOCI on Derivatives - Effective Portion | 0.7 | [5] | [5] | |||||||||||
| Gain (Loss) Reclassified From AOCI to Earnings-Effective Portion | [5] | [5] | ||||||||||||
| Gain (Loss) Recognized in Income on Derivatives-Ineffective Portion and Amount Excluded From Effectiveness Testing | [5] | [5] | ||||||||||||
| Deferred Losses in AOCI Expected to be Reclassified into Earnings Over the Next 12 Months | [5] | |||||||||||||
|
||||||||||||||
| X | ||||||||||
|
- Definition
The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The effective portion of losses on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The amount of loss reclassified into earnings in the period when cash flow hedge is discontinued because it is probable that the original forecasted transactions will not occur by the end of the original period or an additional two month time period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Risk Management and Hedging Activities (Schedule of Changes in Derivative Instruments not Designated as Hedging Instruments) (Detail) (Derivative Assets Not Designated As Hedging Instruments [Member], USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
|
Affiliates [Member] | Commodity Derivatives [Member]
|
|||
| Derivative [Line Items] | |||
| Realized | $ 44.4 | $ 1.7 | $ (1.2) |
| Unrealized | 8.3 | (0.8) | (1.1) |
| Gains (losses) from commodity derivative activity, net | 52.7 | 0.9 | (2.3) |
|
Third Party [Member] | Commodity Derivatives [Member]
|
|||
| Derivative [Line Items] | |||
| Realized | 4.1 | (36.4) | 15.9 |
| Unrealized | 13.1 | 43.2 | (10.6) |
| Gains (losses) from commodity derivative activity, net | 17.2 | 6.8 | 5.3 |
|
Third Party [Member] | Interest Rate Derivatives [Member]
|
|||
| Derivative [Line Items] | |||
| Realized | (7.5) | (4.6) | (1.5) |
| Unrealized | 7.4 | 5.2 | 3.1 |
| Gains (losses) from commodity derivative activity, net | $ (0.1) | $ 0.6 | $ 1.6 |
| X | ||||||||||
|
- Definition
Realized gains (losses) on derivatives. No definition available.
|
| X | ||||||||||
|
- Definition
The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Risk Management and Hedging Activities (Schedule of Net Long or Short Positions Expected to be Realized) (Detail)
|
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2012
bbl
|
Dec. 31, 2011
bbl
|
|
|
Crude Oil [Member]
|
||
| Derivative [Line Items] | ||
| 2012 | (695,792) | |
| 2013 | (943,379) | (941,323) |
| 2014 | (584,365) | (547,500) |
| 2015 | (401,865) | (365,000) |
| 2016 | (183,000) | (183,000) |
|
Natural Gas [Member]
|
||
| Derivative [Line Items] | ||
| 2012 | (17,766,000) | |
| 2013 | (8,887,980) | 1,635,000 |
| 2014 | (4,712,880) | (365,000) |
| 2015 | (5,127,155) | |
|
Natural Gas Liquids [Member]
|
||
| Derivative [Line Items] | ||
| 2012 | (478,236) | |
| 2013 | (2,593,955) | |
| 2014 | (2,584,930) | |
| 2015 | (2,491,250) | |
|
Natural Gas Basis Swaps [Member]
|
||
| Derivative [Line Items] | ||
| 2012 | 14,357,500 | |
| 2013 | 9,690,000 | 3,600,000 |
| 2014 | (1,350,000) | |
| X | ||||||||||
|
- Definition
Net Long or (Short) Positions Expected to be Realized Year Five. No definition available.
|
| X | ||||||||||
|
- Definition
Net Long or (Short) Positions Expected to be Realized Year Four. No definition available.
|
| X | ||||||||||
|
- Definition
Net Long or (Short) Positions Expected to be Realized Year One. No definition available.
|
| X | ||||||||||
|
- Definition
Net Long or (Short) Positions Expected to be Realized Year Three. No definition available.
|
| X | ||||||||||
|
- Definition
Net Long or (Short) Positions Expected to be Realized Year Two. No definition available.
|
| X | ||||||||||
|
- Details
|
|
Partnership Equity and Distributions (Narrative) (Detail) (USD $)
In Millions, except Share data, unless otherwise specified |
1 Months Ended | 12 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 1 Months Ended | 1 Months Ended | 1 Months Ended | 12 Months Ended | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jul. 02, 2012
|
Mar. 30, 2012
|
Dec. 31, 2012
D
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Feb. 22, 2013
|
Nov. 30, 2012
|
Nov. 27, 2012
|
Aug. 31, 2012
|
Mar. 31, 2012
|
Mar. 13, 2012
|
Feb. 29, 2012
|
Mar. 31, 2011
|
Feb. 28, 2011
|
Nov. 30, 2010
|
Sep. 30, 2010
|
Dec. 31, 2012
Distribution Stage First [Member]
|
Dec. 31, 2012
Distribution Stage Second [Member]
|
Dec. 31, 2012
Distribution Stage Third [Member]
|
Dec. 31, 2012
Distribution Stage Thereafter [Member]
|
Dec. 31, 2012
Equity Distribution Agreement [Member]
|
Dec. 31, 2012
Equity Distribution Agreement [Member]
|
Dec. 31, 2011
Equity Distribution Agreement [Member]
|
Aug. 31, 2011
Equity Distribution Agreement [Member]
|
Nov. 30, 2012
Eagle Ford System [Member]
|
Nov. 02, 2012
Eagle Ford System [Member]
|
Dec. 31, 2012
Eagle Ford System [Member]
|
Jul. 02, 2012
Mont Belvieu Fractionators [Member]
|
Mar. 30, 2012
Southeast Texas [Member]
|
Dec. 31, 2012
Southeast Texas [Member]
|
Sep. 30, 2012
Southeast Texas [Member]
|
Mar. 31, 2012
Southeast Texas [Member]
|
Jan. 31, 2011
Southeast Texas [Member]
|
Jan. 31, 2012
East Texas System [Member]
|
Jan. 03, 2012
East Texas System [Member]
|
Dec. 31, 2012
East Texas System [Member]
|
Dec. 31, 2012
General Partner [Member]
|
|||||||
| Partnership Equity And Distribution [Line Items] | |||||||||||||||||||||||||||||||||||||||||||
| Partnership deadline for distributions (in days) | 45 | ||||||||||||||||||||||||||||||||||||||||||
| Consideration financed through issuance of common units | 1,000,417 | 1,912,663 | 1,912,663 | 1,536,098 | 1,000,417 | 727,520 | 727,520 | ||||||||||||||||||||||||||||||||||||
| Ownership interest acquired | 33.33% | 33.33% | 46.67% | 66.67% | 66.67% | 66.67% | 66.67% | 33.33% | 49.90% | 49.90% | 49.90% | ||||||||||||||||||||||||||||||||
| Number of common units sold | 4,989,802 | ||||||||||||||||||||||||||||||||||||||||||
| Common units sold per unit | $ 35.55 | ||||||||||||||||||||||||||||||||||||||||||
| Net proceeds | $ 173.8 | ||||||||||||||||||||||||||||||||||||||||||
| Senior notes interest rate percentage | 4.95% | 2.50% | 2.50% | 2.50% | 4.95% | 3.25% | |||||||||||||||||||||||||||||||||||||
| Common unitholders, units issued | 61,346,058 | 44,848,703 | 2,990,000 | 5,148,500 | 30,701 | 3,596,636 | 8,399 | 2,875,000 | |||||||||||||||||||||||||||||||||||
| Common units, per unit | $ 32.57 | $ 47.42 | $ 40.55 | $ 34.96 | |||||||||||||||||||||||||||||||||||||||
| Net proceeds | 93.1 | 234.0 | 139.7 | 96.2 | |||||||||||||||||||||||||||||||||||||||
| Maximum aggregate offering price | 150.0 | ||||||||||||||||||||||||||||||||||||||||||
| Common unitholders, units issued | 254,265 | 1,147,654 | 761,285 | ||||||||||||||||||||||||||||||||||||||||
| Net proceeds | 455.2 | 169.7 | [1] | 189.3 | [2] | 10.0 | 47.4 | 30.2 | |||||||||||||||||||||||||||||||||||
| Commissions and offering costs | 0.7 | 1.6 | 1.2 | ||||||||||||||||||||||||||||||||||||||||
| Offer value of common stock remaining available for sale | $ 69.5 | $ 69.5 | |||||||||||||||||||||||||||||||||||||||||
| General partner ownership interest | 1.00% | ||||||||||||||||||||||||||||||||||||||||||
| Limited partner ownership interest | 1.00% | ||||||||||||||||||||||||||||||||||||||||||
| Limited Partner pro rata interest | $ 0.4025 | $ 0.4375 | $ 0.525 | ||||||||||||||||||||||||||||||||||||||||
| General Partner pro rata interest per unit | 13.00% | 23.00% | 48.00% | ||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||
| X | ||||||||||
|
- Definition
Commissions and offering costs No definition available.
|
| X | ||||||||||
|
- Definition
Deadline To Distribute Available Cash To Unitholders No definition available.
|
| X | ||||||||||
|
- Definition
General partner ownership interest No definition available.
|
| X | ||||||||||
|
- Definition
Incentive Distribution Payments Made And Minimum Distribution Level Percentage No definition available.
|
| X | ||||||||||
|
- Definition
Limited partner ownership interest No definition available.
|
| X | ||||||||||
|
- Definition
Limited Partners Capital Account Price Of Units Issued No definition available.
|
| X | ||||||||||
|
- Definition
Limited Partners Capital Account Units Issued During Period No definition available.
|
| X | ||||||||||
|
- Definition
Offer Value Of Common Stock Unit Remaining Available For Sale No definition available.
|
| X | ||||||||||
|
- Definition
Partners Capital Account Max Aggregate Offering Price No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Units Sold Under Private Placement Price Per Unit No definition available.
|
| X | ||||||||||
|
- Definition
Number of shares of equity interests issued or issuable to acquire entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Percentage of voting equity interests acquired in the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Interest rate stated in the contractual debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Per-share or per-unit cash distributions paid to a common shareholder or unit-holder by an LLC or LP. No definition available.
|
| X | ||||||||||
|
- Definition
The number of limited partner units issued. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of capital contributed by the limited partners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of units sold in a private placement of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash inflow from the issuance of common limited partners units during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Partnership Equity and Distributions (Cash Distribution) (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified |
12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|||||||
| Partnership Equity And Distribution [Line Items] | |||||||||
| Total Cash Distribution (Millions) | $ 181.3 | $ 132.4 | [1] | $ 101.9 | [2] | ||||
|
November 14, 2012 [Member]
|
|||||||||
| Partnership Equity And Distribution [Line Items] | |||||||||
| Per Unit Distribution | $ 0.6800 | ||||||||
| Total Cash Distribution (Millions) | 52.6 | ||||||||
|
August 14, 2012 [Member]
|
|||||||||
| Partnership Equity And Distribution [Line Items] | |||||||||
| Per Unit Distribution | $ 0.6700 | ||||||||
| Total Cash Distribution (Millions) | 49.4 | ||||||||
|
May 15, 2012 [Member]
|
|||||||||
| Partnership Equity And Distribution [Line Items] | |||||||||
| Per Unit Distribution | $ 0.6600 | ||||||||
| Total Cash Distribution (Millions) | 42.6 | ||||||||
|
February 14, 2012 [Member]
|
|||||||||
| Partnership Equity And Distribution [Line Items] | |||||||||
| Per Unit Distribution | $ 0.6500 | ||||||||
| Total Cash Distribution (Millions) | 36.7 | ||||||||
|
November 14, 2011 [Member]
|
|||||||||
| Partnership Equity And Distribution [Line Items] | |||||||||
| Per Unit Distribution | $ 0.6400 | ||||||||
| Total Cash Distribution (Millions) | 34.9 | ||||||||
|
August 12, 2011 [Member]
|
|||||||||
| Partnership Equity And Distribution [Line Items] | |||||||||
| Per Unit Distribution | $ 0.6325 | ||||||||
| Total Cash Distribution (Millions) | 34.0 | ||||||||
|
May 13, 2011 [Member]
|
|||||||||
| Partnership Equity And Distribution [Line Items] | |||||||||
| Per Unit Distribution | $ 0.6250 | ||||||||
| Total Cash Distribution (Millions) | 33.4 | ||||||||
|
February 14, 2011 [Member]
|
|||||||||
| Partnership Equity And Distribution [Line Items] | |||||||||
| Per Unit Distribution | $ 0.6175 | ||||||||
| Total Cash Distribution (Millions) | 30.0 | ||||||||
|
November 12, 2010 [Member]
|
|||||||||
| Partnership Equity And Distribution [Line Items] | |||||||||
| Per Unit Distribution | $ 0.6100 | ||||||||
| Total Cash Distribution (Millions) | 27.4 | ||||||||
|
August 13, 2010 [Member]
|
|||||||||
| Partnership Equity And Distribution [Line Items] | |||||||||
| Per Unit Distribution | $ 0.6100 | ||||||||
| Total Cash Distribution (Millions) | 25.3 | ||||||||
|
May 14, 2010 [Member]
|
|||||||||
| Partnership Equity And Distribution [Line Items] | |||||||||
| Per Unit Distribution | $ 0.6000 | ||||||||
| Total Cash Distribution (Millions) | 24.6 | ||||||||
|
February 12, 2010 [Member]
|
|||||||||
| Partnership Equity And Distribution [Line Items] | |||||||||
| Per Unit Distribution | $ 0.6000 | ||||||||
| Total Cash Distribution (Millions) | $ 24.6 | ||||||||
|
|||||||||
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Total distributions to each class of partners (i.e., general, limited and preferred partners). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The distribution amount per share for all classes of units. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Equity-Based Compensation (Total Compensation Cost for Equity-Based Arrangements) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Compensation cost | $ 1.6 | $ 6.6 | $ 2.8 |
|
Performance Phantom Units [Member]
|
|||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Compensation cost | 0.7 | 4.2 | 1.2 |
|
Phantom Units [Member]
|
|||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Compensation cost | 0.2 | 0.2 | 0.2 |
|
Restricted Phantom Units [Member]
|
|||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Compensation cost | $ 0.7 | $ 2.2 | $ 1.4 |
| X | ||||||||||
|
- Definition
Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Equity-Based Compensation (Narrative) (Detail) (USD $)
In Millions, except Share data, unless otherwise specified |
12 Months Ended | 12 Months Ended | 12 Months Ended | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Feb. 18, 2011
|
Dec. 31, 2012
Restricted Phantom Units [Member]
|
Dec. 31, 2011
Restricted Phantom Units [Member]
|
Dec. 31, 2010
Restricted Phantom Units [Member]
|
Dec. 31, 2013
Restricted Phantom Units [Member]
Subsequent Event [Member]
Expected To Vest 2013 [Member]
|
Dec. 31, 2014
Restricted Phantom Units [Member]
Subsequent Event [Member]
Expected To Vest 2014 [Member]
|
Dec. 31, 2012
Performance Units [Member]
|
Dec. 31, 2011
Performance Units [Member]
|
Dec. 31, 2010
Performance Units [Member]
|
Dec. 31, 2013
Performance Units [Member]
Subsequent Event [Member]
Expected To Vest 2013 [Member]
|
Dec. 31, 2014
Performance Units [Member]
Subsequent Event [Member]
Expected To Vest 2014 [Member]
|
Dec. 31, 2012
Performance Units [Member]
Maximum [Member]
Subsequent Event [Member]
|
Dec. 31, 2012
Phantom Units [Member]
|
Dec. 31, 2011
Phantom Units [Member]
|
Dec. 31, 2010
Phantom Units [Member]
|
|||||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||||||||||||||||||||
| Maximum limited partner units that may be issued pursuant to awards under the 2005 LTIP | 850,000 | |||||||||||||||||||||
| Reclassification of share-based compensation liability to additional paid-in capital | $ 1.9 | |||||||||||||||||||||
| Number of Performance Units to be vested over three years. | 200.00% | |||||||||||||||||||||
| Expected to vest | 3,170 | 1,560 | 1,610 | 10,010 | [1] | 3,633 | 6,377 | |||||||||||||||
| Unrecognized compensation expense | $ 0.1 | $ 0.2 | ||||||||||||||||||||
| Weighted average period for the recognition of the unrecognized compensation costs, in years | 2 years | 2 years | ||||||||||||||||||||
| Granted, Units | 11,740 | [2] | 10,580 | 16,630 | 11,740 | [2] | 10,580 | 16,630 | 4,000 | 4,000 | 5,200 | |||||||||||
| Estimated Forfeiture Rate | 30.00% | 20.00% | 10.00% | 10.00% | ||||||||||||||||||
|
||||||||||||||||||||||
| X | ||||||||||
|
- Definition
The estimated forfeiture rate used to arrive at the total units expected to vest. No definition available.
|
| X | ||||||||||
|
- Definition
The amount previously recorded as a share-based compensation liability that is reclassified to additional paid-in capital as a result of a modification that changed the award's classification from a liability to equity. No definition available.
|
| X | ||||||||||
|
- Definition
The number of non-vested equity-based payment instruments outstanding as of the balance sheet date that is expected to vest. No definition available.
|
| X | ||||||||||
|
- Definition
The range of the number of units that will ultimately vest depending on the achievement of specified performance targets over the the performance period. No definition available.
|
| X | ||||||||||
|
- Definition
As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Equity-Based Compensation (Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award) (Detail) (USD $)
|
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
||||||||
|
Performance Units [Member]
|
||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||||||||
| Outstanding Units, Beginning Balance | 27,210 | 67,350 | 67,140 | |||||||
| Granted, Units | 11,740 | [1] | 10,580 | 16,630 | ||||||
| Vested, Units | (20,100) | [2] | (50,720) | (14,215) | ||||||
| Forfeited, Units | (7,760) | (2,205) | ||||||||
| Outstanding, Units, Ending Balance | 11,090 | 27,210 | 67,350 | |||||||
| Expected to vest | 10,010 | [3] | ||||||||
| Outstanding, Grant Date Weighted Average Price Per Unit, Beginning Balance | $ 35.69 | $ 15.42 | $ 15.18 | |||||||
| Granted, Grant Date Weighted Average Price Per Unit | $ 39.31 | [1] | $ 41.80 | $ 31.80 | ||||||
| Vested, Grant Date Weighted Average Price Per Unit | $ 34.57 | [2] | $ 10.05 | $ 33.44 | ||||||
| Forfeited, Grant Date Weighted Average Price Per Unit | $ 38.97 | $ 15.61 | ||||||||
| Outstanding, Grant Date Weighted Average Price Per Unit, Ending Balance | $ 39.24 | $ 35.69 | $ 15.42 | |||||||
| Expected To Vest, Grant Date Weighted Average Price Per Unit | $ 39.24 | [3] | ||||||||
| Outstanding, Measurement Date Price Per Unit | 41.24 | |||||||||
| Expected to vest, Measurement Date Price Per Unit | $ 41.24 | [3] | ||||||||
|
Phantom Units [Member]
|
||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||||||||
| Outstanding Units, Beginning Balance | ||||||||||
| Granted, Units | 4,000 | 4,000 | 5,200 | |||||||
| Vested, Units | (4,000) | (4,000) | (5,200) | |||||||
| Outstanding, Units, Ending Balance | ||||||||||
| Granted, Grant Date Weighted Average Price Per Unit | $ 48.03 | $ 41.80 | $ 24.05 | |||||||
| Vested, Grant Date Weighted Average Price Per Unit | $ 48.03 | $ 41.80 | $ 31.80 | |||||||
| Outstanding, Measurement Date Price Per Unit | 0 | |||||||||
|
Restricted Phantom Units [Member]
|
||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||||||||
| Outstanding Units, Beginning Balance | 19,330 | 67,350 | 67,140 | |||||||
| Granted, Units | 11,740 | [1] | 10,580 | 16,630 | ||||||
| Vested, Units | (19,060) | (58,600) | (14,215) | |||||||
| Forfeited, Units | (7,760) | (2,205) | ||||||||
| Outstanding, Units, Ending Balance | 4,250 | 19,330 | 67,350 | |||||||
| Expected to vest | 3,170 | |||||||||
| Outstanding, Grant Date Weighted Average Price Per Unit, Beginning Balance | $ 37.27 | $ 15.42 | $ 15.18 | |||||||
| Granted, Grant Date Weighted Average Price Per Unit | $ 39.31 | [1] | $ 41.80 | $ 31.80 | ||||||
| Vested, Grant Date Weighted Average Price Per Unit | $ 37.31 | $ 12.97 | $ 33.44 | |||||||
| Forfeited, Grant Date Weighted Average Price Per Unit | $ 43.27 | $ 15.61 | ||||||||
| Outstanding, Grant Date Weighted Average Price Per Unit, Ending Balance | $ 39.63 | $ 37.27 | $ 15.42 | |||||||
| Expected To Vest, Grant Date Weighted Average Price Per Unit | $ 39.76 | |||||||||
| Outstanding, Measurement Date Price Per Unit | 41.31 | |||||||||
| Expected to vest, Measurement Date Price Per Unit | $ 41.34 | |||||||||
|
||||||||||
| X | ||||||||||
|
- Definition
The number of non-vested equity-based payment instruments outstanding as of the balance sheet date that is expected to vest. No definition available.
|
| X | ||||||||||
|
- Definition
Share based compensation arrangement by share based payment award equity instruments other than options expected to vest measurement date price. No definition available.
|
| X | ||||||||||
|
- Definition
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Expected To Vest Weighted Average Grant Date Fair Value No definition available.
|
| X | ||||||||||
|
- Definition
Share based compensation arrangement by share based payment award equity instruments other than options measurement date price. No definition available.
|
| X | ||||||||||
|
- Definition
The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Equity-Based Compensation (Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award) (Parenthetical) (Detail) (Performance Units [Member])
|
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
|
Performance Units [Member]
|
||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Percentage of Units Vested | 121.00% | |
| Performance estimate for units granted | 100.00% | 100.00% |
| Estimated Forfeiture Rate | 10.00% | 10.00% |
| X | ||||||||||
|
- Definition
The estimated forfeiture rate used to arrive at the total units expected to vest. No definition available.
|
| X | ||||||||||
|
- Definition
Percentage of units vested. No definition available.
|
| X | ||||||||||
|
- Definition
The estimated percentage of units that will meet specified performance targets used to calculate the total units expected to vest No definition available.
|
| X | ||||||||||
|
- Details
|
|
Equity-Based Compensation (Fair Value of Units Vested and Unit-Based Liabilities Paid for Unit Based Awards) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
|
Performance Units [Member]
|
|||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Fair value of units vested | $ 1.0 | $ 5.3 | |
| Unit-based liabilities paid | 4.5 | 0.8 | |
|
Phantom Units [Member]
|
|||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Fair value of units vested | 0.2 | 0.2 | 0.2 |
|
Restricted Phantom Units [Member]
|
|||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Fair value of units vested | 1.2 | 2.5 | 0.5 |
| Unit-based liabilities paid | $ 2.4 | $ 0.6 | |
| X | ||||||||||
|
- Definition
The liabilities paid during the accounting period for equity-based compensation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The total fair value of equity-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Income Taxes (Narrative) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2011
Texas Express NGL [Member]
|
Dec. 31, 2011
Taxable Income [Member]
Michigan [Member]
|
Dec. 31, 2011
Tax Surcharge [Member]
Michigan [Member]
|
Dec. 31, 2011
Gross Receipts [Member]
Michigan [Member]
|
Dec. 31, 2011
Marysville Acquisition [Member]
|
Jan. 04, 2011
Marysville Acquisition [Member]
|
Dec. 30, 2010
Marysville Acquisition [Member]
|
|
| Income Taxes [Line Items] | ||||||||||
| Deferred tax balance | $ 0 | $ 0 | $ 0 | |||||||
| Deferred tax liabilities from acquisition | 35.0 | |||||||||
| Taxes Payable, Current | 5.4 | 35.0 | ||||||||
| Income Taxes Paid | 29.3 | |||||||||
| Current, state income tax expense | (1.0) | (1.3) | (1.1) | 0.3 | ||||||
| Texas Margin Tax Rate | 1.00% | |||||||||
| Michigan Business Tax | 4.95% | 21.99% | 0.80% | |||||||
| Net long-term deferred tax liabilities | $ 3.4 | $ 3.4 | ||||||||
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Income Tax Expense Benefit Percentage No definition available.
|
| X | ||||||||||
|
- Definition
State Gross Margin Tax Rate No definition available.
|
| X | ||||||||||
|
- Definition
The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted state and local tax law to relevant amounts of taxable Income or Loss from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed after one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of deferred tax liability attributable to taxable temporary differences not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Income Taxes (Components of Income Tax Benefit (Expense)) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
| Income Taxes [Line Items] | |||
| Current, federal income tax expense | $ 0 | $ (29.3) | $ 0 |
| Current, state income tax expense | (1.0) | (1.3) | (1.1) |
| Deferred, federal income tax benefit expense | 0 | 29.3 | 0 |
| Deferred, state income tax (expense) benefit | 0 | 0.8 | (0.4) |
| Total income tax expense | $ (1.0) | $ (0.5) | $ (1.5) |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted federal tax law to the domestic taxable Income or Loss from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted state and local tax law to relevant amounts of taxable Income or Loss from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The component of total income tax expense for the period comprised of the increase (decrease) during the period in the entity's domestic deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of the federally enacted tax law. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The component of total income tax expense for the period comprised of the increase (decrease) in the entity's state and local deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of the applicable enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to pretax Income or Loss from continuing operations; income tax expense or benefit may include interest and penalties on tax uncertainties based on the entity's accounting policy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Net Income or Loss per Limited Partner Unit (Narrative) (Detail)
|
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Operating Partnership Earnings Per Share [Line Items] | ||
| Dilutive effect of unit-based awards, equivalent units | 33,043 | 64,286 |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Commitments And Contingent Liabilities (Narrative) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
| Contingencies And Commitments [Line Items] | |||
| Consolidated rental expense | $ 12.9 | $ 13.1 | $ 12.8 |
|
Dart Energy Corporation [Member]
|
|||
| Contingencies And Commitments [Line Items] | |||
| Percentage of equity interest acquired | 90.00% | ||
|
Prospect Street Energy, LLC [Member]
|
|||
| Contingencies And Commitments [Line Items] | |||
| Percentage of equity interest acquired | 5.00% | ||
|
EE Group, LLC [Member]
|
|||
| Contingencies And Commitments [Line Items] | |||
| Percentage of equity interest acquired | 100.00% | ||
|
Marysville Acquisition [Member]
|
|||
| Contingencies And Commitments [Line Items] | |||
| Percentage of equity interest acquired | 5.00% | ||
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Percentage of voting equity interests acquired in the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Commitments And Contingent Liabilities (Schedule of Future Minimum Rental Payments for Various Operating Leases) (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
|---|---|
| Schedule Of Future Minimum Rental Payments For Operating Leases [Line Items] | |
| 2013 | $ 10.8 |
| 2014 | 5.6 |
| 2015 | 3.5 |
| 2016 | 2.4 |
| 2017 | 1.1 |
| Thereafter | 0.9 |
| Total minimum rental payments | $ 24.3 |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of required minimum rental payments maturing in the next fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of required minimum rental payments maturing in the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of required minimum rental payments maturing in the forth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of required minimum rental payments maturing after the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Business Segments (Narrative) (Detail)
|
12 Months Ended |
|---|---|
|
Dec. 31, 2012
Project
|
|
| Number of owned and operated rail terminals | 6 |
| Number of owned marine import terminals | 1 |
| Number of leased marine terminals | 1 |
| Number of pipeline and several open access pipeline terminals | 1 |
|
Texas Express [Member]
|
|
| Equity ownership percentage | 10.00% |
|
Mont Belvieu Enterprise Fractionator [Member]
|
|
| Equity ownership percentage | 12.50% |
|
Mont Belvieu 1 Fractionator [Member]
|
|
| Equity ownership percentage | 20.00% |
|
Colorado [Member]
|
|
| Ownership interest percentage | 75.00% |
|
Discovery Producer Services LLC [Member]
|
|
| Equity ownership percentage | 40.00% |
|
Eagle Ford System [Member]
|
|
| Equity ownership percentage | 33.33% |
| X | ||||||||||
|
- Definition
Leased Marine Terminals No definition available.
|
| X | ||||||||||
|
- Definition
Owned And Operated Rail Terminals No definition available.
|
| X | ||||||||||
|
- Definition
Owned Marine Import Terminals No definition available.
|
| X | ||||||||||
|
- Definition
Pipeline Terminals No definition available.
|
| X | ||||||||||
|
- Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The parent entity's interest in net assets of the subsidiary, expressed as a percentage. No definition available.
|
|
Business Segments (Business Segments) (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 12 Months Ended | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Sep. 30, 2012
|
Jun. 30, 2012
|
Mar. 31, 2012
|
Dec. 31, 2011
|
Sep. 30, 2011
|
Jun. 30, 2011
|
Mar. 31, 2011
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
||||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||||||||||||||
| Total operating revenue | $ 1,720.7 | $ 2,358.4 | [1] | $ 2,108.4 | [2] | |||||||||||||||||||||||||||||
| Gross margin | 419.2 | [3] | 425.4 | [3] | 325.3 | [3] | ||||||||||||||||||||||||||||
| Operating and maintenance expense | (123.2) | (125.7) | [1] | (98.3) | [2] | |||||||||||||||||||||||||||||
| Depreciation and amortization expense | (63.4) | (100.6) | [1] | (88.1) | [2] | |||||||||||||||||||||||||||||
| General and administrative expense | (45.8) | (48.3) | [1] | (45.8) | [2] | |||||||||||||||||||||||||||||
| Earnings from unconsolidated affiliates | 28.9 | 22.7 | [1] | 23.8 | [2] | |||||||||||||||||||||||||||||
| Other operating income | 0.5 | 0.5 | [1] | 5.0 | [2] | |||||||||||||||||||||||||||||
| Interest expense | (42.2) | (33.9) | [1] | (29.1) | [2] | |||||||||||||||||||||||||||||
| Income tax expense | (1.0) | [4] | (0.5) | [1],[4] | (1.5) | [2],[4] | ||||||||||||||||||||||||||||
| Net income | 67.3 | 1.9 | 79.8 | 24.0 | 10.6 | 68.1 | 57.4 | 3.5 | 173.0 | 139.6 | [1] | 100.4 | [2] | |||||||||||||||||||||
| Net income attributable to noncontrolling interests | (3.0) | (0.6) | (0.7) | (0.7) | (6.0) | 0.4 | (9.7) | (3.5) | (5.0) | (18.8) | [1] | (9.2) | [2] | |||||||||||||||||||||
| Net income (loss) attributable to partners | 64.3 | 1.3 | 79.1 | 23.3 | 4.6 | 68.5 | 47.7 | 168.0 | 120.8 | [1] | 91.2 | [2] | ||||||||||||||||||||||
| Net unrealized gains on derivative instruments | 21.3 | [5] | 39.9 | [5] | (8.4) | [5] | ||||||||||||||||||||||||||||
| Capital expenditures | 200.4 | 165.7 | [6] | 75.9 | [2] | |||||||||||||||||||||||||||||
| Acquisitions net of cash acquired | 687.4 | 174.8 | 282.1 | |||||||||||||||||||||||||||||||
| Investments in unconsolidated affiliates | 184.0 | 7.0 | [6] | 2.3 | [2] | |||||||||||||||||||||||||||||
| Step acquisition - equity interest re-measurement gain | 9.1 | [2] | ||||||||||||||||||||||||||||||||
| Total long-term assets | 2,662.9 | 1,923.7 | 2,662.9 | 1,923.7 | 1,796.8 | |||||||||||||||||||||||||||||
| Total current assets | 309.1 | 353.7 | [1] | 309.1 | 353.7 | [1] | 350.4 | |||||||||||||||||||||||||||
| Total assets | 2,972.0 | 2,277.4 | [1] | 2,972.0 | 2,277.4 | [1] | 2,147.2 | |||||||||||||||||||||||||||
|
Natural Gas Services [Member]
|
||||||||||||||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||||||||||||||
| Total operating revenue | 1,242.7 | 1,670.4 | 1,617.6 | |||||||||||||||||||||||||||||||
| Gross margin | 314.0 | [3] | 322.3 | [3] | 283.5 | [3] | ||||||||||||||||||||||||||||
| Operating and maintenance expense | (92.4) | (94.7) | (82.0) | |||||||||||||||||||||||||||||||
| Depreciation and amortization expense | (54.7) | (89.5) | (83.5) | |||||||||||||||||||||||||||||||
| Earnings from unconsolidated affiliates | 17.6 | 22.7 | 23.0 | |||||||||||||||||||||||||||||||
| Other operating income | 2.0 | |||||||||||||||||||||||||||||||||
| Net income | 184.5 | 160.8 | 143.0 | |||||||||||||||||||||||||||||||
| Net income attributable to noncontrolling interests | (5.0) | (18.8) | (9.2) | |||||||||||||||||||||||||||||||
| Net income (loss) attributable to partners | 179.5 | 142.0 | 133.8 | |||||||||||||||||||||||||||||||
| Net unrealized gains on derivative instruments | 19.8 | [5] | 41.8 | [5] | (8.8) | [5] | ||||||||||||||||||||||||||||
| Capital expenditures | 185.0 | 151.8 | 63.8 | |||||||||||||||||||||||||||||||
| Acquisitions net of cash acquired | 657.6 | 145.2 | 78.8 | |||||||||||||||||||||||||||||||
| Investments in unconsolidated affiliates | 141.3 | 7.0 | 2.3 | |||||||||||||||||||||||||||||||
| Total long-term assets | 2,133.9 | 1,555.4 | 2,133.9 | 1,555.4 | 1,469.3 | |||||||||||||||||||||||||||||
|
NGL Logistics [Member]
|
||||||||||||||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||||||||||||||
| Total operating revenue | 63.5 | 56.6 | 17.6 | |||||||||||||||||||||||||||||||
| Gross margin | 63.5 | [3] | 52.0 | [3] | 12.9 | [3] | ||||||||||||||||||||||||||||
| Operating and maintenance expense | (16.1) | (15.9) | (3.7) | |||||||||||||||||||||||||||||||
| Depreciation and amortization expense | (6.2) | (8.2) | (2.6) | |||||||||||||||||||||||||||||||
| Earnings from unconsolidated affiliates | 11.3 | 0.8 | ||||||||||||||||||||||||||||||||
| Other operating income | 0.5 | 0.5 | ||||||||||||||||||||||||||||||||
| Net income | 53.0 | 28.4 | 16.5 | |||||||||||||||||||||||||||||||
| Net income (loss) attributable to partners | 53.0 | 28.4 | 16.5 | |||||||||||||||||||||||||||||||
| Capital expenditures | 11.8 | 9.3 | 11.5 | |||||||||||||||||||||||||||||||
| Acquisitions net of cash acquired | 29.8 | 29.6 | 135.5 | |||||||||||||||||||||||||||||||
| Investments in unconsolidated affiliates | 42.7 | |||||||||||||||||||||||||||||||||
| Step acquisition - equity interest re-measurement gain | 9.1 | |||||||||||||||||||||||||||||||||
| Total long-term assets | 339.7 | [7] | 250.1 | [7] | 339.7 | [7] | 250.1 | [7] | 221.7 | [7] | ||||||||||||||||||||||||
|
Wholesale Propane Logistics [Member]
|
||||||||||||||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||||||||||||||
| Total operating revenue | 414.7 | 633.6 | 473.2 | |||||||||||||||||||||||||||||||
| Gross margin | 41.7 | [3] | 51.1 | [3] | 28.9 | [3] | ||||||||||||||||||||||||||||
| Operating and maintenance expense | (14.7) | (15.1) | (12.6) | |||||||||||||||||||||||||||||||
| Depreciation and amortization expense | (2.5) | (2.9) | (1.9) | |||||||||||||||||||||||||||||||
| Other operating income | 3.0 | |||||||||||||||||||||||||||||||||
| Net income | 24.5 | 33.1 | 17.4 | |||||||||||||||||||||||||||||||
| Net income (loss) attributable to partners | 24.5 | 33.1 | 17.4 | |||||||||||||||||||||||||||||||
| Net unrealized gains on derivative instruments | 1.5 | [5] | 0.3 | [5] | (1.0) | [5] | ||||||||||||||||||||||||||||
| Capital expenditures | 3.6 | 4.6 | 0.6 | |||||||||||||||||||||||||||||||
| Acquisitions net of cash acquired | 67.8 | |||||||||||||||||||||||||||||||||
| Total long-term assets | 105.0 | 104.2 | 105.0 | 104.2 | 101.7 | |||||||||||||||||||||||||||||
|
Other [Member]
|
||||||||||||||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||||||||||||||
| Depreciation and amortization expense | (0.1) | |||||||||||||||||||||||||||||||||
| General and administrative expense | (45.8) | (48.3) | (45.8) | |||||||||||||||||||||||||||||||
| Interest expense | (42.2) | (33.9) | (29.1) | |||||||||||||||||||||||||||||||
| Income tax expense | (1.0) | [4] | (0.5) | [4] | (1.5) | [4] | ||||||||||||||||||||||||||||
| Net income | (89.0) | (82.7) | (76.5) | |||||||||||||||||||||||||||||||
| Net income (loss) attributable to partners | (89.0) | (82.7) | (76.5) | |||||||||||||||||||||||||||||||
| Net unrealized gains on derivative instruments | (2.2) | [5] | 1.4 | [5] | ||||||||||||||||||||||||||||||
| Total long-term assets | 84.3 | [8] | 14.0 | [8] | 84.3 | [8] | 14.0 | [8] | 4.1 | [8] | ||||||||||||||||||||||||
|
Eliminations [Member]
|
||||||||||||||||||||||||||||||||||
| Segment Reporting Information [Line Items] | ||||||||||||||||||||||||||||||||||
| Total operating revenue | $ (0.2) | [9] | $ (2.2) | [9] | ||||||||||||||||||||||||||||||
|
||||||||||||||||||||||||||||||||||
| X | ||||||||||
|
- Definition
Advances To Equity Method Investments No definition available.
|
| X | ||||||||||
|
- Definition
Payment To Acquire Businesses, Net Of Cash Acquired No definition available.
|
| X | ||||||||||
|
- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cost of borrowed funds accounted for as interest that was charged against earnings during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Midstream refers to those gas industry activities that fall between exploration and production (upstream) and refining and marketing (downstream). It may be applied to the gathering, processing, transmission and storage of natural gas; including the treating of natural gas to remove impurities, along with the sale of by-products such as residue gas, natural gas liquids and condensate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The net amount of other operating income and expenses, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operations. No definition available.
|
| X | ||||||||||
|
- Definition
The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of open derivatives, commodity, or energy contracts, held at each balance sheet date, that was included in earnings for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Business Segments (Business Segments) (Parenthetical) (Detail) (Black Lake [Member])
|
Dec. 31, 2011
|
|---|---|
| Segment Reporting Information [Line Items] | |
| Ownership interest percentage | 50.00% |
|
Affiliated Entity [Member]
|
|
| Segment Reporting Information [Line Items] | |
| Ownership interest percentage | 100.00% |
| X | ||||||||||
|
- Definition
The parent entity's interest in net assets of the subsidiary, expressed as a percentage. No definition available.
|
| X | ||||||||||
|
- Details
|
|
Supplemental Cash Flow Information (Schedule of Supplemental Cash Flow Information) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
| Schedule Of Supplemental Cash Flow [Line Items] | |||
| Cash paid for interest, net of amounts capitalized | $ 22.8 | $ 17.2 | $ 7.8 |
| Cash paid for income taxes, net of income tax refunds | 0.7 | 29.9 | 0.9 |
| Property, plant and equipment acquired with accounts payable | 18.3 | 14.2 | 6.3 |
| Other non-cash additions of property, plant and equipment | 5.8 | 3.0 | 12.1 |
| Accounts payable related to equity issuance costs | 0.2 | (0.2) | 0.2 |
| Acquisition related contingent consideration | 3.1 | ||
| Non-cash contribution from noncontrolling interests | 0.3 | 0.5 | |
| Non-cash contribution from DCP Midstream, LLC | 0.3 | 0.5 | |
| Non-cash change in parent advances | $ 4.4 | ||
| X | ||||||||||
|
- Definition
Accounts payable related to equity issuance costs in non cash investing and financing activities. No definition available.
|
| X | ||||||||||
|
- Definition
Business Acquisition Contingent Consideration No definition available.
|
| X | ||||||||||
|
- Definition
Non-Cash Change In Parent Advances No definition available.
|
| X | ||||||||||
|
- Definition
Non-cash contribution from noncontrolling interests. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Future cash outflow to pay for purchases of fixed assets that have occurred. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The fair value of assets acquired in noncash investing or financing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of cash paid for interest during the period net of cash paid for interest that is capitalized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Quarterly Financial Data (Schedule of Quarterly Consolidated Results of Operations) (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Sep. 30, 2012
|
Jun. 30, 2012
|
Mar. 31, 2012
|
Dec. 31, 2011
|
Sep. 30, 2011
|
Jun. 30, 2011
|
Mar. 31, 2011
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|||||||
| Schedule Of Quarterly Financial Data [Line Items] | |||||||||||||||||
| Total operating revenues | $ 450.5 | $ 330.9 | $ 413.7 | $ 525.6 | $ 555.3 | $ 593.6 | $ 575.6 | $ 633.9 | $ 1,720.7 | $ 2,358.4 | |||||||
| Operating income | 65.4 | 1.4 | 89.4 | 31.1 | 13.5 | 70.2 | 60.3 | 7.3 | 187.3 | 151.3 | [1] | 107.2 | [2] | ||||
| Net income | 67.3 | 1.9 | 79.8 | 24.0 | 10.6 | 68.1 | 57.4 | 3.5 | 173.0 | 139.6 | [1] | 100.4 | [2] | ||||
| Net income attributable to noncontrolling interests | (3.0) | (0.6) | (0.7) | (0.7) | (6.0) | 0.4 | (9.7) | (3.5) | (5.0) | (18.8) | [1] | (9.2) | [2] | ||||
| Net income attributable to partners | 64.3 | 1.3 | 79.1 | 23.3 | 4.6 | 68.5 | 47.7 | 168.0 | 120.8 | [1] | 91.2 | [2] | |||||
| Net income (loss) allocable to limited partners | $ 52.5 | $ (9.5) | $ 68.9 | $ 12.3 | $ (8.2) | $ 59.5 | $ 35.3 | $ (11.4) | $ 124.2 | $ 75.2 | $ 31.1 | ||||||
| Basic net income (loss) per limited partner unit | 0.87 | (0.16) | 1.33 | 0.26 | (0.19) | 1.35 | 0.80 | (0.28) | 2.28 | 1.73 | 0.86 | ||||||
|
|||||||||||||||||
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate amount of net income allocated to limited partners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Net income (loss) allocated to each outstanding limited partnership unit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The net result for the period of deducting operating expenses from operating revenues. No definition available.
|
| X | ||||||||||
|
- Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Supplementary Information - Condensed Consolidating Financial Information (Narrative) (Detail) (Subsidiary Issuer [Member])
|
12 Months Ended |
|---|---|
|
Dec. 31, 2012
|
|
|
Subsidiary Issuer [Member]
|
|
| Ownership percentage | 100.00% |
| X | ||||||||||
|
- Definition
The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Supplementary Information - Condensed Consolidating Financial Information (Condensed Consolidating Balance Sheets) (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2009
|
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ASSETS | |||||||||||||
| Cash and cash equivalents | $ 1.3 | $ 7.6 | [1],[2] | $ 6.7 | [1],[3] | $ 2.1 | [3] | ||||||
| Accounts receivable, net | 181.3 | 214.8 | [2] | ||||||||||
| Inventories | 74.7 | 87.9 | [2] | ||||||||||
| Other | 51.8 | 43.4 | [2] | ||||||||||
| Total current assets | 309.1 | 353.7 | [2] | 350.4 | |||||||||
| Property, plant and equipment, net | 1,727.4 | 1,499.4 | [2] | ||||||||||
| Goodwill and intangible assets, net | 290.7 | 299.1 | [2] | ||||||||||
| Investments in unconsolidated affiliates | 558.0 | 107.1 | [2] | ||||||||||
| Other long-term assets | 86.8 | 18.1 | [2] | ||||||||||
| Total assets | 2,972.0 | 2,277.4 | [2] | 2,147.2 | |||||||||
| Accounts payable and other current liabilities | 233.4 | 380.5 | [2] | ||||||||||
| Long-term debt | 1,620.3 | 746.8 | [2] | ||||||||||
| Other long-term liabilities | 35.1 | 51.8 | [2] | ||||||||||
| Total liabilities | 1,888.8 | 1,179.1 | [2] | ||||||||||
| Commitments and contingent liabilities | [2] | ||||||||||||
| Predecessor equity | 257.4 | [2] | |||||||||||
| Net equity | 1,062.5 | 649.7 | [2] | ||||||||||
| Accumulated other comprehensive loss | (14.7) | (21.2) | [2] | ||||||||||
| Total partners' equity | 1,047.8 | 885.9 | [2] | ||||||||||
| Noncontrolling interests | 35.4 | 212.4 | [2] | ||||||||||
| Total equity | 1,083.2 | 1,098.3 | [2] | 1,076.0 | 817.7 | ||||||||
| Total liabilities and equity | 2,972.0 | 2,277.4 | [2] | ||||||||||
|
DCP Midstream Partners, LP [Member]
|
|||||||||||||
| ASSETS | |||||||||||||
| Advances receivable - consolidated subsidiaries | 873.2 | 370.7 | [2] | ||||||||||
| Investments in consolidated subsidiaries | 174.8 | 515.2 | [2] | ||||||||||
| Total assets | 1,048.0 | 885.9 | [2] | ||||||||||
| Accounts payable and other current liabilities | 0.2 | ||||||||||||
| Total liabilities | 0.2 | ||||||||||||
| Commitments and contingent liabilities | [2] | ||||||||||||
| Net equity | 1,047.8 | 885.9 | [2] | ||||||||||
| Total partners' equity | 1,047.8 | 885.9 | [2] | ||||||||||
| Total equity | 1,047.8 | 885.9 | [2] | ||||||||||
| Total liabilities and equity | 1,048.0 | 885.9 | [2] | ||||||||||
|
Subsidiary Issuer [Member]
|
|||||||||||||
| ASSETS | |||||||||||||
| Cash and cash equivalents | 3.4 | 3.6 | [1],[2] | 1.5 | [1],[3] | 1.6 | [3] | ||||||
| Total current assets | 3.4 | 3.6 | [2] | ||||||||||
| Advances receivable - consolidated subsidiaries | 1,424.2 | 597.2 | [2] | ||||||||||
| Investments in consolidated subsidiaries | 370.6 | 679.3 | [2] | ||||||||||
| Other long-term assets | 10.6 | 5.6 | [2] | ||||||||||
| Total assets | 1,808.8 | 1,285.7 | [2] | ||||||||||
| Accounts payable and other current liabilities | 11.8 | 18.7 | [2] | ||||||||||
| Long-term debt | 1,620.3 | 746.8 | [2] | ||||||||||
| Other long-term liabilities | 1.9 | 5.0 | [2] | ||||||||||
| Total liabilities | 1,634.0 | 770.5 | [2] | ||||||||||
| Commitments and contingent liabilities | [2] | ||||||||||||
| Net equity | 184.3 | 534.6 | [2] | ||||||||||
| Accumulated other comprehensive loss | (9.5) | (19.4) | [2] | ||||||||||
| Total partners' equity | 174.8 | 515.2 | [2] | ||||||||||
| Total equity | 174.8 | 515.2 | [2] | ||||||||||
| Total liabilities and equity | 1,808.8 | 1,285.7 | [2] | ||||||||||
|
Non-Guarantor Subsidiaries [Member]
|
|||||||||||||
| ASSETS | |||||||||||||
| Cash and cash equivalents | 0.9 | 6.4 | [1],[2] | 6.7 | [1],[3] | 1.3 | [3] | ||||||
| Accounts receivable, net | 181.3 | 214.8 | [2] | ||||||||||
| Inventories | 74.7 | 87.9 | [2] | ||||||||||
| Other | 51.8 | 43.4 | [2] | ||||||||||
| Total current assets | 308.7 | 352.5 | [2] | ||||||||||
| Property, plant and equipment, net | 1,727.4 | 1,499.4 | [2] | ||||||||||
| Goodwill and intangible assets, net | 290.7 | 299.1 | [2] | ||||||||||
| Investments in unconsolidated affiliates | 558.0 | 107.1 | [2] | ||||||||||
| Other long-term assets | 76.2 | 12.5 | [2] | ||||||||||
| Total assets | 2,961.0 | 2,270.6 | [2] | ||||||||||
| Accounts payable and other current liabilities | 224.4 | 364.2 | [2] | ||||||||||
| Advances payable - consolidated subsidiaries | 2,297.4 | 967.9 | [2] | ||||||||||
| Other long-term liabilities | 33.2 | 46.8 | [2] | ||||||||||
| Total liabilities | 2,555.0 | 1,378.9 | [2] | ||||||||||
| Commitments and contingent liabilities | [2] | ||||||||||||
| Predecessor equity | 257.4 | [2] | |||||||||||
| Net equity | 375.8 | 423.7 | [2] | ||||||||||
| Accumulated other comprehensive loss | (5.2) | (1.8) | [2] | ||||||||||
| Total partners' equity | 370.6 | 679.3 | [2] | ||||||||||
| Noncontrolling interests | 35.4 | 212.4 | [2] | ||||||||||
| Total equity | 406.0 | 891.7 | [2] | ||||||||||
| Total liabilities and equity | 2,961.0 | 2,270.6 | [2] | ||||||||||
|
Consolidating Adjustments [Member]
|
|||||||||||||
| ASSETS | |||||||||||||
| Cash and cash equivalents | (3.0) | (2.4) | [1],[2] | (1.5) | [1],[3] | (0.8) | [3] | ||||||
| Total current assets | (3.0) | (2.4) | [2] | ||||||||||
| Advances receivable - consolidated subsidiaries | (2,297.4) | (967.9) | [2] | ||||||||||
| Investments in consolidated subsidiaries | (545.4) | (1,194.5) | [2] | ||||||||||
| Total assets | (2,845.8) | (2,164.8) | [2] | ||||||||||
| Accounts payable and other current liabilities | (3.0) | (2.4) | [2] | ||||||||||
| Advances payable - consolidated subsidiaries | (2,297.4) | (967.9) | [2] | ||||||||||
| Total liabilities | (2,300.4) | (970.3) | [2] | ||||||||||
| Commitments and contingent liabilities | [2] | ||||||||||||
| Net equity | (545.4) | (1,194.5) | [2] | ||||||||||
| Total partners' equity | (545.4) | (1,194.5) | [2] | ||||||||||
| Total equity | (545.4) | (1,194.5) | [2] | ||||||||||
| Total liabilities and equity | $ (2,845.8) | $ (2,164.8) | [2] | ||||||||||
|
|||||||||||||
| X | ||||||||||
|
- Definition
Goodwill and Intangible Assets, Net No definition available.
|
| X | ||||||||||
|
- Definition
Investments In Consolidated Subsidiaries No definition available.
|
| X | ||||||||||
|
- Definition
Other current assets, including unrealized gains on derivative instruments. No definition available.
|
| X | ||||||||||
|
- Definition
Other long term liabilities, including unrealized losses on derivative instruments. No definition available.
|
| X | ||||||||||
|
- Definition
Other long term assets, including unrealized gains on derivative instruments. No definition available.
|
| X | ||||||||||
|
- Definition
Partners' Equity Net No definition available.
|
| X | ||||||||||
|
- Definition
Our interest, prior to our acquisition, in transfers of net assets between entities under common control that represent a change in reporting entity. No definition available.
|
| X | ||||||||||
|
- Definition
The aggregate of amounts due from customers or clients, within one year of the balance sheet date (or one operating cycle, if longer), for goods or services that have been delivered or sold in the normal course of business and an amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date within one year of the balance sheet, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection and net of any write-downs taken for collection uncertainty on the part of the holder, respectively. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, and other costs not separately disclosed in the balance sheet that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. No definition available.
|
| X | ||||||||||
|
- Definition
Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due after one year (or one business cycle). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total of all Liabilities and Stockholders' Equity items (or Partners' Capital, as applicable), including the portion of equity attributable to noncontrolling interests, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of ownership interest of different classes of partners in limited partnership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total of all Partners' Capital (deficit) items which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of partners' capital (deficit), including portions attributable to both the parent and noncontrolling interests. Excludes temporary equity and is sometimes called permanent equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Supplementary Information - Condensed Consolidating Financial Information (Condensed Consolidating Statements of Operations) (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 12 Months Ended | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Sep. 30, 2012
|
Jun. 30, 2012
|
Mar. 31, 2012
|
Dec. 31, 2011
|
Sep. 30, 2011
|
Jun. 30, 2011
|
Mar. 31, 2011
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
||||||||||
| Sales of natural gas, propane, NGLs and condensate | $ 1,465.9 | $ 2,178.5 | [1] | $ 1,975.1 | [2] | |||||||||||||||
| Transportation, processing and other | 185.0 | 172.2 | [1] | 130.3 | [2] | |||||||||||||||
| Gains from commodity derivative activity, net | 69.8 | 7.7 | [1] | 3.0 | [2] | |||||||||||||||
| Total operating revenues | 1,720.7 | 2,358.4 | [1] | 2,108.4 | [2] | |||||||||||||||
| Purchases of natural gas, propane and NGLs | 1,301.5 | 1,933.0 | [1] | 1,783.1 | [2] | |||||||||||||||
| Operating and maintenance expense | 123.2 | 125.7 | [1] | 98.3 | [2] | |||||||||||||||
| Depreciation and amortization expense | 63.4 | 100.6 | [1] | 88.1 | [2] | |||||||||||||||
| General and administrative expense | 45.8 | 48.3 | [1] | 45.8 | [2] | |||||||||||||||
| Step acquisition - equity interest re-measurement gain | (9.1) | [2] | ||||||||||||||||||
| Other income | (0.5) | (0.5) | [1] | (5.0) | [2] | |||||||||||||||
| Total operating costs and expenses | 1,533.4 | 2,207.1 | [1] | 2,001.2 | [2] | |||||||||||||||
| Operating (loss) income | 65.4 | 1.4 | 89.4 | 31.1 | 13.5 | 70.2 | 60.3 | 7.3 | 187.3 | 151.3 | [1] | 107.2 | [2] | |||||||
| Interest expense, net | (42.2) | (33.9) | [1] | (29.1) | [2] | |||||||||||||||
| Earnings from unconsolidated affiliates | 28.9 | 22.7 | [1] | 23.8 | [2] | |||||||||||||||
| Income before income taxes | 174.0 | 140.1 | [1] | 101.9 | [2] | |||||||||||||||
| Income tax expense | (1.0) | [3] | (0.5) | [1],[3] | (1.5) | [2],[3] | ||||||||||||||
| Net income | 67.3 | 1.9 | 79.8 | 24.0 | 10.6 | 68.1 | 57.4 | 3.5 | 173.0 | 139.6 | [1] | 100.4 | [2] | |||||||
| Net income attributable to noncontrolling interests | (3.0) | (0.6) | (0.7) | (0.7) | (6.0) | 0.4 | (9.7) | (3.5) | (5.0) | (18.8) | [1] | (9.2) | [2] | |||||||
| Net income attributable to partners | 64.3 | 1.3 | 79.1 | 23.3 | 4.6 | 68.5 | 47.7 | 168.0 | 120.8 | [1] | 91.2 | [2] | ||||||||
|
DCP Midstream Partners, LP [Member]
|
||||||||||||||||||||
| Earnings from consolidated subsidiaries | 168.0 | 120.8 | [1] | 91.2 | [2] | |||||||||||||||
| Income before income taxes | 168.0 | 120.8 | [1] | 91.2 | [2] | |||||||||||||||
| Net income | 168.0 | 120.8 | [1] | 91.2 | [2] | |||||||||||||||
| Net income attributable to partners | 168.0 | 120.8 | [1] | 91.2 | [2] | |||||||||||||||
|
Subsidiary Issuer [Member]
|
||||||||||||||||||||
| General and administrative expense | 0.2 | [2] | ||||||||||||||||||
| Total operating costs and expenses | 0.2 | [2] | ||||||||||||||||||
| Operating (loss) income | (0.2) | [2] | ||||||||||||||||||
| Interest expense, net | (41.9) | (33.5) | [1] | (28.8) | [2] | |||||||||||||||
| Earnings from consolidated subsidiaries | 209.9 | 154.3 | [1] | 120.2 | [2] | |||||||||||||||
| Income before income taxes | 168.0 | 120.8 | [1] | 91.2 | [2] | |||||||||||||||
| Net income | 168.0 | 120.8 | [1] | 91.2 | [2] | |||||||||||||||
| Net income attributable to partners | 168.0 | 120.8 | [1] | 91.2 | [2] | |||||||||||||||
|
Non-Guarantor Subsidiaries [Member]
|
||||||||||||||||||||
| Sales of natural gas, propane, NGLs and condensate | 1,465.9 | 2,178.5 | [1] | 1,975.1 | [2] | |||||||||||||||
| Transportation, processing and other | 185.0 | 172.2 | [1] | 130.3 | [2] | |||||||||||||||
| Gains from commodity derivative activity, net | 69.8 | 7.7 | [1] | 3.0 | [2] | |||||||||||||||
| Total operating revenues | 1,720.7 | 2,358.4 | [1] | 2,108.4 | [2] | |||||||||||||||
| Purchases of natural gas, propane and NGLs | 1,301.5 | 1,933.0 | [1] | 1,783.1 | [2] | |||||||||||||||
| Operating and maintenance expense | 123.2 | 125.7 | [1] | 98.3 | [2] | |||||||||||||||
| Depreciation and amortization expense | 63.4 | 100.6 | [1] | 88.1 | [2] | |||||||||||||||
| General and administrative expense | 45.8 | 48.3 | [1] | 45.6 | [2] | |||||||||||||||
| Step acquisition - equity interest re-measurement gain | (9.1) | [2] | ||||||||||||||||||
| Other income | (0.5) | (0.5) | [1] | (5.0) | [2] | |||||||||||||||
| Total operating costs and expenses | 1,533.4 | 2,207.1 | [1] | 2,001.0 | [2] | |||||||||||||||
| Operating (loss) income | 187.3 | 151.3 | [1] | 107.4 | [2] | |||||||||||||||
| Interest expense, net | (0.3) | (0.4) | [1] | (0.3) | [2] | |||||||||||||||
| Earnings from unconsolidated affiliates | 28.9 | 22.7 | [1] | 23.8 | [2] | |||||||||||||||
| Income before income taxes | 215.9 | 173.6 | [1] | 130.9 | [2] | |||||||||||||||
| Income tax expense | (1.0) | (0.5) | [1] | (1.5) | [2] | |||||||||||||||
| Net income | 214.9 | 173.1 | [1] | 129.4 | [2] | |||||||||||||||
| Net income attributable to noncontrolling interests | (5.0) | (18.8) | [1] | (9.2) | [2] | |||||||||||||||
| Net income attributable to partners | 209.9 | 154.3 | [1] | 120.2 | [2] | |||||||||||||||
|
Consolidating Adjustments [Member]
|
||||||||||||||||||||
| Earnings from consolidated subsidiaries | (377.9) | (275.1) | [1] | (211.4) | [2] | |||||||||||||||
| Income before income taxes | (275.1) | [1] | (211.4) | [2] | ||||||||||||||||
| Net income | (377.9) | (275.1) | [1] | (211.4) | [2] | |||||||||||||||
| Net income attributable to partners | $ (377.9) | $ (275.1) | [1] | $ (211.4) | [2] | |||||||||||||||
|
||||||||||||||||||||
| X | ||||||||||
|
- Definition
Gains (losses) from commodity derivative activity, net. No definition available.
|
| X | ||||||||||
|
- Definition
Income (Loss) from Consolidated Subsidiaries No definition available.
|
| X | ||||||||||
|
- Definition
Natural gas, propane, NGLs and condensate purchases. No definition available.
|
| X | ||||||||||
|
- Definition
Sales of natural gas, propane, NGLs and condensate. No definition available.
|
| X | ||||||||||
|
- Definition
In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total costs of sales and operating expenses for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Revenue related to midstream and downstream gas activities. May include the following: gathering from wells, processing to remove impurities, storage, transmission, and the sale of natural gas and related products. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cost of borrowed funds accounted for as interest that was charged against earnings during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Midstream refers to those gas industry activities that fall between exploration and production (upstream) and refining and marketing (downstream). It may be applied to the gathering, processing, transmission and storage of natural gas; including the treating of natural gas to remove impurities, along with the sale of by-products such as residue gas, natural gas liquids and condensate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The net result for the period of deducting operating expenses from operating revenues. No definition available.
|
| X | ||||||||||
|
- Definition
The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The net amount of other operating income and expenses, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operations. No definition available.
|
| X | ||||||||||
|
- Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Supplementary Information - Condensed Consolidating Financial Information (Condensed Consolidating Statement of Comprehensive Income) (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Sep. 30, 2012
|
Jun. 30, 2012
|
Mar. 31, 2012
|
Dec. 31, 2011
|
Sep. 30, 2011
|
Jun. 30, 2011
|
Mar. 31, 2011
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|||||||
| Net income | $ 67.3 | $ 1.9 | $ 79.8 | $ 24.0 | $ 10.6 | $ 68.1 | $ 57.4 | $ 3.5 | $ 173.0 | $ 139.6 | [1] | $ 100.4 | [2] | ||||
| Other comprehensive income (loss): | |||||||||||||||||
| Reclassification of cash flow hedge losses into earnings | 10.6 | 20.7 | [1] | 22.9 | [2] | ||||||||||||
| Net unrealized (losses) gains on cash flow hedges | 0.1 | (13.3) | [1] | (18.7) | [2] | ||||||||||||
| Total other comprehensive income | 10.1 | 5.6 | [1] | 4.2 | [2] | ||||||||||||
| Total comprehensive income | 183.1 | 145.2 | [1] | 104.6 | [2] | ||||||||||||
| Total comprehensive income attributable to noncontrolling interests | (5.0) | (18.8) | [1] | (9.2) | [2] | ||||||||||||
| Total comprehensive income attributable to partners | 178.1 | 126.4 | [1] | 95.4 | [2] | ||||||||||||
|
Predecessor Equity [Member]
|
|||||||||||||||||
| Net income | 2.6 | 20.4 | 43.2 | ||||||||||||||
| Other comprehensive income (loss): | |||||||||||||||||
| Net unrealized (losses) gains on cash flow hedges | (0.6) | (1.8) | |||||||||||||||
| Net unrealized (losses) gains on cash flow hedges - predecessor operations | (0.6) | (1.8) | [1] | ||||||||||||||
| Total other comprehensive income | (0.6) | (1.8) | |||||||||||||||
|
DCP Midstream Partners, LP [Member]
|
|||||||||||||||||
| Net income | 168.0 | 120.8 | [1] | 91.2 | [2] | ||||||||||||
| Other comprehensive income (loss): | |||||||||||||||||
| Other comprehensive income (loss) from consolidated subsidiaries | 10.1 | 5.6 | [1] | 4.2 | [2] | ||||||||||||
| Total other comprehensive income | 10.1 | 5.6 | [1] | 4.2 | [2] | ||||||||||||
| Total comprehensive income | 178.1 | 126.4 | [1] | 95.4 | [2] | ||||||||||||
| Total comprehensive income attributable to partners | 178.1 | 126.4 | [1] | 95.4 | [2] | ||||||||||||
|
Subsidiary Issuer [Member]
|
|||||||||||||||||
| Net income | 168.0 | 120.8 | [1] | 91.2 | [2] | ||||||||||||
| Other comprehensive income (loss): | |||||||||||||||||
| Reclassification of cash flow hedge losses into earnings | 10.6 | 20.4 | [1] | 22.4 | [2] | ||||||||||||
| Net unrealized (losses) gains on cash flow hedges | (0.7) | (12.4) | [1] | (18.7) | [2] | ||||||||||||
| Other comprehensive income (loss) from consolidated subsidiaries | 0.2 | (2.4) | [1] | 0.5 | [2] | ||||||||||||
| Total other comprehensive income | 10.1 | 5.6 | [1] | 4.2 | [2] | ||||||||||||
| Total comprehensive income | 178.1 | 126.4 | [1] | 95.4 | [2] | ||||||||||||
| Total comprehensive income attributable to partners | 178.1 | 126.4 | [1] | 95.4 | [2] | ||||||||||||
|
Non-Guarantor Subsidiaries [Member]
|
|||||||||||||||||
| Net income | 214.9 | 173.1 | [1] | 129.4 | [2] | ||||||||||||
| Other comprehensive income (loss): | |||||||||||||||||
| Reclassification of cash flow hedge losses into earnings | 0.3 | [1] | 0.5 | [2] | |||||||||||||
| Net unrealized (losses) gains on cash flow hedges | 0.8 | (0.9) | [1] | ||||||||||||||
| Total other comprehensive income | 0.2 | (2.4) | [1] | 0.5 | [2] | ||||||||||||
| Total comprehensive income | 215.1 | 170.7 | [1] | 129.9 | [2] | ||||||||||||
| Total comprehensive income attributable to noncontrolling interests | (5.0) | (18.8) | [1] | (9.2) | [2] | ||||||||||||
| Total comprehensive income attributable to partners | 210.1 | 151.9 | [1] | 120.7 | [2] | ||||||||||||
|
Non-Guarantor Subsidiaries [Member] | Predecessor Equity [Member]
|
|||||||||||||||||
| Other comprehensive income (loss): | |||||||||||||||||
| Net unrealized (losses) gains on cash flow hedges - predecessor operations | (0.6) | (1.8) | [1] | ||||||||||||||
|
Consolidating Adjustments [Member]
|
|||||||||||||||||
| Net income | (377.9) | (275.1) | [1] | (211.4) | [2] | ||||||||||||
| Other comprehensive income (loss): | |||||||||||||||||
| Other comprehensive income (loss) from consolidated subsidiaries | (10.3) | (3.2) | [1] | (4.7) | [2] | ||||||||||||
| Total other comprehensive income | (10.3) | (3.2) | [1] | (4.7) | [2] | ||||||||||||
| Total comprehensive income | (388.2) | (278.3) | [1] | (216.1) | [2] | ||||||||||||
| Total comprehensive income attributable to partners | $ (388.2) | $ (278.3) | [1] | $ (216.1) | [2] | ||||||||||||
|
|||||||||||||||||
| X | ||||||||||
|
- Definition
The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Net of tax amount of other comprehensive income (loss) attributable to both parent entity and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Net of tax amount of other comprehensive income (loss) attributable to noncontrolling interests. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Net of tax amount of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income. Also includes reclassification adjustments of an entity's share of an equity investee's deferred hedging gain (loss) realized in net income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Before tax amount of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Net of tax amount, before reclassification adjustments, of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Supplementary Information - Condensed Consolidating Financial Information (Condensed Consolidating Statement of Comprehensive Income) (Parenthetical) (Detail) (Southeast Texas [Member])
|
1 Months Ended | 3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
|
Mar. 30, 2012
|
Sep. 30, 2012
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
|
Southeast Texas [Member]
|
|||||
| Ownership interest percentage in subsidiary | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% |
| X | ||||||||||
|
- Definition
The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Supplementary Information - Condensed Consolidating Financial Information (Condensed Consolidating Statements of Cash Flows) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
||||||||||
| OPERATING ACTIVITIES | ||||||||||||
| Net cash (used in) provided by operating activities | $ 124.9 | $ 260.8 | [1] | $ 162.4 | [2] | |||||||
| INVESTING ACTIVITIES: | ||||||||||||
| Capital expenditures | (200.4) | (165.7) | [1] | (75.9) | [2] | |||||||
| Acquisitions, net of cash acquired | (687.4) | (174.8) | [1] | (282.1) | [2] | |||||||
| Investments in unconsolidated affiliates | (184.0) | (7.0) | [1] | (2.3) | [2] | |||||||
| Return of investment from unconsolidated affiliate | 1.0 | 1.6 | [1] | 1.2 | [2] | |||||||
| Proceeds from sale of assets | 0.3 | 5.2 | [1] | 3.5 | [2] | |||||||
| Proceeds from sales of available-for-sale securities | 10.1 | [2] | ||||||||||
| Net cash provided by (used in) investing activities | (1,070.5) | (340.7) | [1] | (345.5) | [2] | |||||||
| FINANCING ACTIVITIES: | ||||||||||||
| Proceeds from debt | 2,664.8 | 1,524.0 | [1] | 868.2 | [2] | |||||||
| Payments of debt | (1,791.5) | (1,425.0) | [1] | (833.4) | [2] | |||||||
| Payment of deferred financing costs | (7.7) | (4.2) | [1] | (2.1) | [2] | |||||||
| Proceeds from issuance of common units, net of offering costs | 455.2 | 169.7 | [1] | 189.3 | [2] | |||||||
| Net change in advances to predecessor from DCP Midstream LLC | (11.5) | 10.9 | [1] | 82.3 | [2] | |||||||
| Distributions to common unitholders and general partner | (181.3) | (132.4) | [1] | (101.9) | [2] | |||||||
| Distributions to noncontrolling interests | (6.2) | (44.8) | [1] | (25.6) | [2] | |||||||
| Contributions from DCP Midstream, LLC | 10.3 | 18.3 | [1] | 14.3 | [2] | |||||||
| Purchase of additional interest in a subsidiary | (3.5) | [2] | ||||||||||
| Net cash provided by (used in) financing activities | 939.3 | 80.8 | [1] | 187.7 | [2] | |||||||
| Net change in cash and cash equivalents | (6.3) | 0.9 | [1] | 4.6 | [2] | |||||||
| Cash and cash equivalents, beginning of year | 7.6 | [1],[3] | 6.7 | [1],[2] | 2.1 | [2] | ||||||
| Cash and cash equivalents, end of year | 1.3 | 7.6 | [1],[3] | 6.7 | [1],[2] | |||||||
|
Cash Portion [Member]
|
||||||||||||
| FINANCING ACTIVITIES: | ||||||||||||
| Excess purchase price over acquired unconsolidated affiliates | (192.8) | (35.7) | [1] | |||||||||
| Contributions from DCP Midstream, LLC | 10.3 | 18.3 | 0.6 | [2] | ||||||||
|
DCP Midstream Partners, LP [Member]
|
||||||||||||
| OPERATING ACTIVITIES | ||||||||||||
| Net cash (used in) provided by operating activities | (273.9) | (37.3) | [1] | (87.4) | [2] | |||||||
| FINANCING ACTIVITIES: | ||||||||||||
| Proceeds from issuance of common units, net of offering costs | 455.2 | 169.7 | [1] | 189.3 | [2] | |||||||
| Distributions to common unitholders and general partner | (181.3) | (132.4) | [1] | (101.9) | [2] | |||||||
| Net cash provided by (used in) financing activities | 273.9 | 37.3 | [1] | 87.4 | [2] | |||||||
|
Subsidiary Issuer [Member]
|
||||||||||||
| OPERATING ACTIVITIES | ||||||||||||
| Net cash (used in) provided by operating activities | (865.8) | (92.7) | [1] | (42.9) | [2] | |||||||
| INVESTING ACTIVITIES: | ||||||||||||
| Proceeds from sales of available-for-sale securities | 10.1 | [2] | ||||||||||
| Net cash provided by (used in) investing activities | 10.1 | [2] | ||||||||||
| FINANCING ACTIVITIES: | ||||||||||||
| Proceeds from debt | 2,664.8 | 1,524.0 | [1] | 868.2 | [2] | |||||||
| Payments of debt | (1,791.5) | (1,425.0) | [1] | (833.4) | [2] | |||||||
| Payment of deferred financing costs | (7.7) | (4.2) | [1] | (2.1) | [2] | |||||||
| Net cash provided by (used in) financing activities | 865.6 | 94.8 | [1] | 32.7 | [2] | |||||||
| Net change in cash and cash equivalents | (0.2) | 2.1 | [1] | (0.1) | [2] | |||||||
| Cash and cash equivalents, beginning of year | 3.6 | [1],[3] | 1.5 | [1],[2] | 1.6 | [2] | ||||||
| Cash and cash equivalents, end of year | 3.4 | 3.6 | [1],[3] | 1.5 | [1],[2] | |||||||
|
Non-Guarantor Subsidiaries [Member]
|
||||||||||||
| OPERATING ACTIVITIES | ||||||||||||
| Net cash (used in) provided by operating activities | 1,265.2 | 391.7 | [1] | 293.4 | [2] | |||||||
| INVESTING ACTIVITIES: | ||||||||||||
| Capital expenditures | (200.4) | (165.7) | [1] | (75.9) | [2] | |||||||
| Acquisitions, net of cash acquired | (687.4) | (174.8) | [1] | (282.1) | [2] | |||||||
| Investments in unconsolidated affiliates | (184.0) | (7.0) | [1] | (2.3) | [2] | |||||||
| Return of investment from unconsolidated affiliate | 1.0 | 1.6 | [1] | 1.2 | [2] | |||||||
| Proceeds from sale of assets | 0.3 | 5.2 | [1] | 3.5 | [2] | |||||||
| Net cash provided by (used in) investing activities | (1,070.5) | (340.7) | [1] | (355.6) | [2] | |||||||
| FINANCING ACTIVITIES: | ||||||||||||
| Net change in advances to predecessor from DCP Midstream LLC | (11.5) | 10.9 | [1] | 82.3 | [2] | |||||||
| Distributions to noncontrolling interests | (6.2) | (44.8) | [1] | (25.6) | [2] | |||||||
| Contributions from DCP Midstream, LLC | 10.3 | 18.3 | [1] | 13.8 | [2] | |||||||
| Purchase of additional interest in a subsidiary | (3.5) | [2] | ||||||||||
| Net cash provided by (used in) financing activities | (200.2) | (51.3) | [1] | 67.6 | [2] | |||||||
| Net change in cash and cash equivalents | (5.5) | (0.3) | [1] | 5.4 | [2] | |||||||
| Cash and cash equivalents, beginning of year | 6.4 | [1],[3] | 6.7 | [1],[2] | 1.3 | [2] | ||||||
| Cash and cash equivalents, end of year | 0.9 | 6.4 | [1],[3] | 6.7 | [1],[2] | |||||||
|
Non-Guarantor Subsidiaries [Member] | Cash Portion [Member]
|
||||||||||||
| FINANCING ACTIVITIES: | ||||||||||||
| Excess purchase price over acquired unconsolidated affiliates | (192.8) | (35.7) | [1] | |||||||||
| Contributions from DCP Midstream, LLC | 0.6 | [2] | ||||||||||
|
Consolidating Adjustments [Member]
|
||||||||||||
| OPERATING ACTIVITIES | ||||||||||||
| Net cash (used in) provided by operating activities | (0.6) | (0.9) | [1] | (0.7) | [2] | |||||||
| FINANCING ACTIVITIES: | ||||||||||||
| Net change in cash and cash equivalents | (0.6) | (0.9) | [1] | (0.7) | [2] | |||||||
| Cash and cash equivalents, beginning of year | (2.4) | [1],[3] | (1.5) | [1],[2] | (0.8) | [2] | ||||||
| Cash and cash equivalents, end of year | $ (3.0) | $ (2.4) | [1],[3] | $ (1.5) | [1],[2] | |||||||
|
||||||||||||
| X | ||||||||||
|
- Definition
Advances To Equity Method Investments No definition available.
|
| X | ||||||||||
|
- Definition
Excess purchase price over acquired assets No definition available.
|
| X | ||||||||||
|
- Definition
Net Change In Advances To Predecessor No definition available.
|
| X | ||||||||||
|
- Definition
Payments To Acquire Businesses And Unconsolidated Affiliates Net Of Cash Acquired No definition available.
|
| X | ||||||||||
|
- Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The net cash inflow or outflow from financing activity for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The net cash inflow or outflow from investing activity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Total distributions to each class of partners (i.e., general, limited and preferred partners). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Cash outflow in the form of ordinary dividends to noncontrolling interests, generally out of earnings. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash outflow for loan and debt issuance costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash outflow associated with the purchase of noncontrolling interest during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash inflow from parent as a source of financing that is recorded as additional paid in capital. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Cash dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations that are returns of capital. Excludes dividends or distributions from equity method investments classified as operating activities. No definition available.
|
| X | ||||||||||
|
- Definition
The cash inflow from the issuance of common limited partners units during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash inflow contributed by noncontrolled interest that purchase additional shares or otherwise increase their ownership stake in a subsidiary of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Supplementary Information - Condensed Consolidating Financial Information (Condensed Consolidating Statements of Cash Flows) (Parenthetical) (Detail) (Southeast Texas [Member])
|
1 Months Ended | 3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
|
Mar. 30, 2012
|
Sep. 30, 2012
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
|
Southeast Texas [Member]
|
|||||
| Ownership interest percentage in subsidiary | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% |
| X | ||||||||||
|
- Definition
The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Valuation and Qualifying Accounts and Reserves (Schedule of Valuation and Qualifying Accounts Reserves) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | 12 Months Ended | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2011
Allowance for Doubtful Accounts [Member]
|
Dec. 31, 2012
Allowance for Doubtful Accounts [Member]
|
Dec. 31, 2009
Allowance for Doubtful Accounts [Member]
|
Dec. 31, 2012
Environmental [Member]
|
Dec. 31, 2011
Environmental [Member]
|
Dec. 31, 2010
Environmental [Member]
|
Dec. 31, 2011
Litigation [Member]
|
Dec. 31, 2010
Litigation [Member]
|
Dec. 31, 2012
Reserve Other [Member]
|
Dec. 31, 2011
Reserve Other [Member]
|
Dec. 31, 2010
Reserve Other [Member]
|
||||||
| Valuation and Qualifying Accounts Disclosure [Line Items] | |||||||||||||||||||
| Balance at Beginning of Period | $ 2.8 | $ 2.6 | $ 4.1 | $ 0.5 | $ 0.3 | $ 0.5 | $ 2.0 | $ 1.9 | $ 1.1 | $ 0.2 | $ 2.4 | $ 0.5 | [1] | $ 0.1 | [1] | ||||
| Charged to Consolidated Statements of Operations | 0.1 | 1.0 | 1.3 | 0.1 | 0.4 | 1.0 | 0.1 | 0.3 | 0.5 | [1] | |||||||||
| Charged to Other Accounts | 1.0 | 1.0 | [1] | ||||||||||||||||
| Deductions/ Other | (0.5) | (0.8) | (3.8) | (0.2) | (0.2) | (0.3) | (0.2) | (0.3) | (2.5) | (0.3) | [1] | (1.1) | [1] | ||||||
| Balance at End of Period | $ 2.4 | $ 2.8 | $ 2.6 | $ 0.3 | $ 0.3 | $ 0.5 | $ 1.9 | $ 2.0 | $ 1.9 | $ 0.2 | $ 0.2 | [1] | $ 0.5 | [1] | |||||
|
|||||||||||||||||||
| X | ||||||||||
|
- Definition
Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, charged to costs and expenses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, charged to accounts other than costs and expenses in a given period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
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- Details
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Subsequent Events (Narrative) (Detail) (USD $)
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12 Months Ended | 12 Months Ended | |||||
|---|---|---|---|---|---|---|---|
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2012
Eagle Ford System [Member]
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Nov. 30, 2012
Eagle Ford System [Member]
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Nov. 02, 2012
Eagle Ford System [Member]
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Dec. 31, 2012
DCP Midstream, LLC [Member]
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| Subsequent Event [Line Items] | |||||||
| Ownership interest acquired | 46.67% | 33.33% | 33.33% | 46.67% | |||
| Fixed price commodity derivative hedge maturity period | 3 years | ||||||
| Aggregate consideration for acquisition | $ 626,000,000 | $ 438,300,000 | |||||
| Direct commodity price hedge maturity period | 27 months | ||||||
| Net working capital and other adjustments | 23,300,000 | ||||||
| Distribution of dividend | $ 29,300,000 | $ 25,300,000 | $ 30,000,000 | $ 0.69 | |||
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- Definition
Business Acquisition Cost Of Acquired Entity Other Adjustments No definition available.
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- Definition
Direct Commodity Price Hedge Maturity Period No definition available.
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- Definition
Fixed Price Commodity Derivative Hedge Maturity Period No definition available.
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- Definition
The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Percentage of voting equity interests acquired in the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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