Pipeline Production Capacity

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of assets acquired at the acquisition date.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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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.

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The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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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.

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The cash outflow to purchase of mineral interests in oil and gas properties for use in the normal oil and gas operations and not intended for resale.

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The cash inflow from the capital received in cash from a partner in a partnership during the period.

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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.

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ACQUISITIONS AND DIVESTITURES - 2018 Activity (Details) $ in Millions		1 Months Ended		12 Months Ended
	Feb. 01, 2019 USD ($) MBbls / d	Dec. 31, 2018 USD ($) Bcf / d	Nov. 30, 2018 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Business Acquisition [Line Items]
Leasehold and property acquisitions					$ (133)	$ (178)	$ (181)
Payments to acquire equity method investments					$ 91	0	0
ALTM
Business Acquisition [Line Items]
Ownership percentage by Parent		79.00%			79.00%
Ownership percentage by noncontrolling owners		21.00%			21.00%
North Sea and Premian Regions
Business Acquisition [Line Items]
Proceeds from sale of certain non-core assets					$ 138
Gain on sale of non-core assets					23
North America Onshore Regions
Business Acquisition [Line Items]
Leasehold and property acquisitions					(133)	(188)	$ (181)
Altus Midstream LP \| KAAC
Business Acquisition [Line Items]
Proceeds from contribution			$ 628
Assets contributed			1,100
Noncontrolling Interest, Altus
Business Acquisition [Line Items]
Noncontrolling interest		$ 407	$ 406		$ 407	$ 0
Gulf Coast Express Pipeline LLC
Business Acquisition [Line Items]
Pipeline production capacity \| Bcf / d		2.0
Gulf Coast Express Pipeline LLC \| Altus Midstream LP
Business Acquisition [Line Items]
Equity method investment, ownership percentage		15.00%			15.00%
Payments to acquire equity method investments		$ 91
EPIC Pipeline LP \| Subsequent Event
Business Acquisition [Line Items]
Pipeline production capacity \| MBbls / d	590
EPIC Pipeline LP \| Subsequent Event \| Altus Midstream LP
Business Acquisition [Line Items]
Equity method investment, ownership percentage	15.00%
Equity method investments	$ 52
Scenario, Forecast \| Gulf Coast Express Pipeline LLC \| Subsequent Event \| Altus Midstream LP
Business Acquisition [Line Items]
Payments to acquire equity method investments				$ 175