Acquisitions Purchase Price Allocation Table (Detail) (USD $) In Millions	May 31, 2011
Business Combinations [Abstract]
Properties and equipment	$ 298
Intangible assets	165
Deferred income taxes	31
Other assets	4
Other liabilities	(21)
Goodwill	362
Total assets acquired and liabilities assumed	839
Less: Fair value of Anadarko's pre-acquisition 7% equity interest in the Wattenberg Plant	37
Acquisition of midstream businesses	802
Loss on Anadarko's preexisting contracts with the previous Wattenberg Plant owner	76
Total consideration paid	$ 878

Represents the fair value of the assets acquired and liabilities assumed from a business combination.

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The amount of acquisition cost of a business combination allocated to other assets of the acquired entity.

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Amount of cash paid to acquire the entity.

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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.

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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.

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Income (expense) and gain (loss) recognized from the settlement of a preexisting relationship between the acquirer and the acquiree.

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The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

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Amount of deferred tax assets or liabilities for the differences between the values assigned and the tax bases of assets and liabilities in a business combination, net of any valuation allowance for deferred tax assets.

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Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations.

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