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-Name Accounting Standards Codification

-Topic 210

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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-Name Regulation S-X (SX)

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-SubTopic 10

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Debt Debt - Spin-Off of Oilfield Services Business (Details) - USD ($) $ in Millions		9 Months Ended
	Jun. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Commitment Period		10 years
Proceeds from issuance of senior notes, net of discount and offering costs			$ 3,460
Seven Seven Energy Inc. [Member] \| Seven Seven Energy Inc. Revolving Credit Facility [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Borrowing capacity			275
Seven Seven Energy Inc. [Member] \| Secured Debt [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Long-term Debt, Gross			400
Seven Seven Energy Inc. [Member] \| Senior Notes [Member] \| 6.5% Senior Notes Due 2022 [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Long-term Debt, Gross			$ 500
Debt Instrument, Interest Rate, Stated Percentage			6.50%
General Partner Distributions	$ 391
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Spinoff [Member] \| Seven Seven Energy Inc. [Member] \| Seven Seven Energy Inc. Revolving Credit Facility [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Commitment Period			5 years
Borrowing capacity			$ 275
Payments of Financing Costs			$ 3
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Spinoff [Member] \| Seven Seven Energy Inc. [Member] \| Secured Debt [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Commitment Period			7 years
Long-term Debt, Gross			$ 400
Proceeds from Issuance of Secured Debt			394
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Spinoff [Member] \| Seven Seven Energy Inc. [Member] \| Senior Notes [Member] \| 6.5% Senior Notes Due 2022 [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Long-term Debt, Gross			$ 500
Debt Instrument, Interest Rate, Stated Percentage			6.50%
Proceeds from issuance of senior notes, net of discount and offering costs			$ 494
General Partner Distributions			$ 391