SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) - USD ($)			3 Months Ended		9 Months Ended	12 Months Ended
		Dec. 27, 2021	Dec. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Feb. 22, 2022
Schedule Of Significant Accounting Policies [Line Items]
Asset impairments						$ 0	$ 208,000,000	$ 4,501,000,000
Equity method investment impairment			$ 160,000,000			0	160,000,000	0
Inventory and other						0	48,000,000	27,000,000
Impairments						0	208,000,000	4,501,000,000
Goodwill impairment						0	0	87,000,000
Goodwill			0		$ 0	0	0	0
Impairment for early termination of drilling rig leases					13,000,000
Inventory write-downs					5,000,000
Other asset impairments					9,000,000
PSC, percentage of gross acreage consolidated		98.00%
PSC, percentage of gross production consolidated		90.00%
PSC, development lease term		20 years
PSC, exploration lease term		5 years
PSC, cost recovery limit		40.00%
PSC, fixed profit-sharing rate		30.00%
Receivables from contracts with customers, net of allowance for doubtful accounts			1,300,000,000			1,300,000,000	1,300,000,000
Cash and cash equivalent	[1]		279,000,000			185,000,000	279,000,000
Restricted cash			0			0	0
Oil and gas property impaired, fair value					1,900,000,000			1,900,000,000
Gathering, processing, and transmission facilities ($209 related to Altus VIE)	[1]		673,000,000			449,000,000	673,000,000
GPT facilities, accumulated depreciation			386,000,000			367,000,000	386,000,000
Deconsolidated assets									$ 183,000,000
Other property and equipment			225,000,000			206,000,000	225,000,000
Restructuring cumulative cost incurred to date					79,000,000			79,000,000
Transaction, reorganization, and separation						26,000,000	22,000,000	54,000,000
Egypt
Schedule Of Significant Accounting Policies [Line Items]
Goodwill impairment				$ 87,000,000
Reorganization Activities
Schedule Of Significant Accounting Policies [Line Items]
Transaction, reorganization, and separation						15,000,000	17,000,000
Consulting Fees
Schedule Of Significant Accounting Policies [Line Items]
Transaction, reorganization, and separation						9,000,000	11,000,000	2,000,000
Separation costs
Schedule Of Significant Accounting Policies [Line Items]
Transaction, reorganization, and separation						6,000,000	6,000,000	51,000,000
Business Combination Costs
Schedule Of Significant Accounting Policies [Line Items]
Transaction, reorganization, and separation						11,000,000	5,000,000
Office closure
Schedule Of Significant Accounting Policies [Line Items]
Transaction, reorganization, and separation								1,000,000
Oil and gas proved property
Schedule Of Significant Accounting Policies [Line Items]
Impairments						0	0	4,319,000,000
Tangible asset impairment charges					$ 20,000,000	0	0	$ 4,319,000,000
Oil and gas proved property | Significant Unobservable Inputs (Level 3) | Measurement Input, Discount Rate
Schedule Of Significant Accounting Policies [Line Items]
Oil and gas properties, measurement inputs					10.00%			10.00%
Gathering, processing, and transmission facilities
Schedule Of Significant Accounting Policies [Line Items]
Oil and gas property impaired, fair value				46,000,000
Tangible asset impairment charges				68,000,000		$ 0	0	$ 68,000,000
Other Property and Equipment | Minimum
Schedule Of Significant Accounting Policies [Line Items]
Useful lives of gas gathering, transmission and processing facilities						3 years
Other Property and Equipment | Maximum
Schedule Of Significant Accounting Policies [Line Items]
Useful lives of gas gathering, transmission and processing facilities						20 years
Altus
Schedule Of Significant Accounting Policies [Line Items]
Equity method investment impairment							160,000,000
Cash and cash equivalent			$ 132,000,000				132,000,000
United States | Oil and gas proved property
Schedule Of Significant Accounting Policies [Line Items]
Impairments				3,900,000,000		$ 0	0	3,938,000,000
Egypt
Schedule Of Significant Accounting Policies [Line Items]
Inventory and other							26,000,000
Egypt | Oil and gas proved property
Schedule Of Significant Accounting Policies [Line Items]
Impairments				354,000,000		0	0	374,000,000
North Sea
Schedule Of Significant Accounting Policies [Line Items]
Inventory and other							22,000,000
North Sea | Oil and gas proved property
Schedule Of Significant Accounting Policies [Line Items]
Impairments				$ 7,000,000		$ 0	$ 0	$ 7,000,000
Apache Egypt
Schedule Of Significant Accounting Policies [Line Items]
Noncontrolling interest, ownership percentage by parent		66.67%
Apache Egypt | Sinopec
Schedule Of Significant Accounting Policies [Line Items]
Ownership percentage						33.33%
Altus | Third-party investors
Schedule Of Significant Accounting Policies [Line Items]
Ownership percentage						21.00%
Kinetik
Schedule Of Significant Accounting Policies [Line Items]
Ownership percentage						10.00%

[1] (1)    The Altus VIE amounts are disclosed as of December 31, 2021. All Altus balances were deconsolidated as of February 22, 2022. Refer to Note 1—Summary of Significant Accounting Policies and Note 3—Acquisitions and Divestitures for further detail.