TRANSACTIONS WITH PARENT AFFILIATE (Details) $ in Millions			1 Months Ended	3 Months Ended		12 Months Ended
		Mar. 01, 2021 USD ($) subsidiary	Aug. 31, 2021 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Feb. 28, 2022 USD ($)	Dec. 31, 2021 USD ($)
Related Party Transaction [Line Items]
Interest income from APA Corporation, net				$ 15	$ 5
Interest accrued						$ 61
Distributions to APA Corporation				(346)
Reimbursable costs charged to Parent				5
Note payable to APA Corporation	[1]			174			$ 195
Payments on note payable to APA Corporation, net				$ (305)	0
Apache Egypt | Sinopec
Related Party Transaction [Line Items]
Ownership percentage by noncontrolling owners				33.33%
Net Income And Distributable Cash Flow For Egyptian Operations | Sinopec
Related Party Transaction [Line Items]
Ownership percentage by noncontrolling owners				30.00%
Noncontrolling Interests
Related Party Transaction [Line Items]
Distributions to APA Corporation				$ (41)
Paid-In Capital
Related Party Transaction [Line Items]
Distributions to APA Corporation				(305)
Noncontrolling interest, APA Corporation
Related Party Transaction [Line Items]
Net income attributable to noncontrolling interest				71	$ 0
Noncontrolling interest, APA Corporation | Noncontrolling Interests
Related Party Transaction [Line Items]
Net income attributable to noncontrolling interest				$ 71
Affiliated Entity | Promissory Note
Related Party Transaction [Line Items]
Debt face amount			$ 250
Debt instrument term			1 year
Affiliated Entity | Holding Company Reorganization
Related Party Transaction [Line Items]
Number of subsidiaries | subsidiary		3
Note receivable, term		7 years
Note receivable, interest rate		4.50%
Note receivable, accrued interest converted to principal, term		5 years 6 months
Affiliated Entity | Holding Company Reorganization | Disposed of by Sale | Three Apache Subsidiaries
Related Party Transaction [Line Items]
Net assets transferred		$ 483
Cash and cash equivalents transferred		292
Oil and gas properties, and working capital items transferred		$ 163

[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.