STATEMENT OF CONSOLIDATED CHANGES IN EQUITY (DEFICIT) AND NONCONTROLLING INTERESTS (Unaudited) - USD ($) $ in Millions		Total		Redeemable Noncontrolling Interest - Altus Preferred Unit Limited Partners		Noncontrolling interests, Egypt	Noncontrolling interests, Altus	APA SHAREHOLDERS’ EQUITY (DEFICIT)	Common Stock	Paid-In Capital	Accumulated Deficit	Treasury Stock	Accumulated Other Comprehensive Income	Noncontrolling Interests		Noncontrolling Interests Noncontrolling interests, Egypt		Noncontrolling Interests Noncontrolling interests, Altus
Beginning balance at Dec. 31, 2020	[1]			$ 608
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income attributable to Altus Preferred Unit holders	[1]			43
Cash distributions to Altus Preferred Unit limited partners				(23)	[1]	$ (60)										$ (60)
Distributions payable to Altus Preferred Unit limited partners	[1]			(11)
Ending balance at Jun. 30, 2021	[1]			617
Beginning balance at Dec. 31, 2020		$ (645)						$ (1,639)	$ 262	$ 11,735	$ (10,461)	$ (3,189)	$ 14	$ 994
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to common stock		704						704			704
Net income attributable to noncontrolling interest						83	$ 28									83		$ 28
Distributions to noncontrolling interest				(23)	[1]	(60)										(60)
Common dividends declared		(19)						(19)		(19)
Other		(15)						(10)	0	(12)		1	1	(5)
Ending balance at Jun. 30, 2021		76						(964)	262	11,704	(9,757)	(3,188)	15	1,040	[2]
Beginning balance at Dec. 31, 2020	[1]			608
Ending balance at Dec. 31, 2021		712	[3]	712	[1]
Beginning balance at Dec. 31, 2020		(645)						(1,639)	262	11,735	(10,461)	(3,189)	14	994
Ending balance at Dec. 31, 2021		(717)	[3]					(1,595)	262	11,645	(9,488)	(4,036)	22	878
Beginning balance at Mar. 31, 2021	[2]			605
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income attributable to Altus Preferred Unit holders	[2]			24
Cash distributions to Altus Preferred Unit limited partners						(20)										(20)	[2]
Distributions payable to Altus Preferred Unit limited partners	[2]			(12)
Ending balance at Jun. 30, 2021	[1]			617
Beginning balance at Mar. 31, 2021		(261)						(1,258)	262	11,727	(10,073)	(3,189)	15	997	[2]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to common stock		316						316			316
Net income attributable to noncontrolling interest						41	27									41	[2]	27	[2]
Distributions to noncontrolling interest						(20)										(20)	[2]
Common dividends declared		(10)						(10)		(10)
Other		(17)						(12)		(13)		1		(5)
Ending balance at Jun. 30, 2021		76						(964)	262	11,704	(9,757)	(3,188)	15	1,040	[2]
Beginning balance at Dec. 31, 2021		712	[3]	712	[1]
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income attributable to Altus Preferred Unit holders	[1]			(70)
Cash distributions to Altus Preferred Unit limited partners						(159)										(159)
Deconsolidation of Altus	[1]			(642)
Ending balance at Jun. 30, 2022		0	[3]	0	[2]
Beginning balance at Dec. 31, 2021		(717)	[3]					(1,595)	262	11,645	(9,488)	(4,036)	22	878
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to common stock		2,809						2,809			2,809
Net income attributable to noncontrolling interest						260	14									260		14
Distributions to noncontrolling interest						(159)										(159)
Common dividends declared		(85)						(85)		(85)
Treasury stock activity, net		(551)						(551)				(551)
Deconsolidation of Altus	[1]			(642)
Other		6						6		7
Ending balance at Jun. 30, 2022		1,505	[3]					584	262	11,567	(6,679)	(4,587)	21	921	[2]
Beginning balance at Mar. 31, 2022	[2]			0
Increase (Decrease) in Temporary Equity [Roll Forward]
Cash distributions to Altus Preferred Unit limited partners						(90)										(90)	[2]
Deconsolidation of Altus							(72)											(72)	[2]
Ending balance at Jun. 30, 2022		0	[3]	$ 0	[2]
Beginning balance at Mar. 31, 2022		852						(18)	262	11,600	(7,605)	(4,296)	21	870	[2]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to common stock		926						926			926
Net income attributable to noncontrolling interest						141	0									141	[2]
Distributions to noncontrolling interest						$ (90)										$ (90)	[2]
Common dividends declared		(42)						(42)		(42)
Treasury stock activity, net		(291)						(291)				(291)
Deconsolidation of Altus							$ (72)											$ (72)	[2]
Other		9						9		9			(1)
Ending balance at Jun. 30, 2022		$ 1,505	[3]					$ 584	$ 262	$ 11,567	$ (6,679)	$ (4,587)	$ 21	$ 921	[2]

[1] As a result of the BCP Business Combination, the Company deconsolidated Altus on February 22, 2022. Refer to Note 1—Summary of Significant Accounting Policies and Note 2—Acquisitions and Divestitures for further detail.

[2] As a result of the BCP Business Combination, the Company deconsolidated Altus on February 22, 2022. Refer to Note 1—Summary of Significant Accounting Policies and Note 2—Acquisitions and Divestitures for further detail.

[3] 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 2—Acquisitions and Divestitures for further detail.