Supplemental Cash Flow Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash paid (received)
Interest	$ 627	$ 684	$ 806
Income taxes	169	(300)	262
Non-cash investing activities
Fair value of properties and equipment exchanged in non-cash transactions	62	65	19
Non-cash investing and financing activities
Capital lease obligation	8	0
Floating production, storage, and offloading vessel construction period obligation	17	0	0
Capital Lease Obligation [Member]
Other Significant Noncash Transactions [Line Items]
Capital lease obligation			(118)
Wattenberg Natural-Gas Processing Plant [Member]
Business Acquisition [Line Items]
Gain related to the fair-value remeasurement of Anadarko’s pre-acquisition 7% equity interest in the Wattenberg Plant	$ 0	$ 0	$ 21
Business combination, equity interest in acquiree, percentage			7.00%

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Percentage of equity in the acquiree held by the acquirer immediately before the acquisition date in a business combination.

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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.

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The increase during the period in capital lease obligations due to entering into new capital leases.

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Future cash outflow to pay for construction in progress expenditures that have occurred.

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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.

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The value of the noncash (or part noncash) consideration given (for example, liability, equity) in a transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of a transaction not resulting in cash receipts or cash payments in the period.

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