Disposal Group, Including Discontinued Operation, Assets Held-for-Sale, Fair Value Adjustment

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Disposal Group Including Discontinued Operation Costs And Other Deductions [Abstract]

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Disposal Group, Including Discontinued Operation, Costs And Other Deductions, Net

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Disposal Group Including Discontinued Operation Revenue And Other Income [Abstract]

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Disposal Group, Including Discontinued Operation, Taxes Other Than On Income

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Disposal Group, Including Discontinued Operation, Transportation And Marketing Expense

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Amount before tax of income (loss) from a discontinued operation. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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Amount of costs of goods sold attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of general and administrative expense attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of other expense attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of revenue attributable to disposal group, including, but not limited to, discontinued operation.

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Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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Acquisitions, Dispositions, and Other Transactions - Summary of Revenues and Costs from Discontinued Operations (Details) - USD ($) $ in Millions	2 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
COSTS AND OTHER DEDUCTIONS
Discontinued operations, net of tax		$ (15)	$ 0	$ (15)	$ 0
Anadarko's Africa Assets \| Discontinued Operations, Disposed of by Sale
REVENUES AND OTHER INCOME
Net sales	$ 228
COSTS AND OTHER DEDUCTIONS
Oil and gas operating expense	32
Transportation and marketing expense	4
Taxes other than on income	46
Fair value adjustment on assets held for sale	65
Selling, general and administrative	8
Other	4
Costs and other deductions, net	159
Income before income taxes	69
Income tax expense	(84)
Discontinued operations, net of tax	$ (15)