STATEMENT OF CONSOLIDATED CHANGES IN EQUITY AND NONCONTROLLING INTEREST(Unaudited) - USD ($) $ in Millions	Total	Common Stock	Paid-In Capital	Accumulated Deficit	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	APACHE SHAREHOLDERS’ EQUITY	Noncontrolling Interests	Noncontrolling interests, Egypt	Noncontrolling interests, Altus	Altus Preferred Unit limited partners
Beginning balance at Dec. 31, 2017	$ 8,791	$ 259	$ 12,128	$ (2,088)	$ (2,887)	$ 4	$ 7,416	$ 1,375
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to common stock	421			421			421
Net income (loss) attributable to noncontrolling interest	215								$ 215	$ 0	$ 0
Distributions to noncontrolling interest - Egypt	(256)							(256)
Common dividends	(287)		(287)				(287)
Other	62	1	104		(43)		62
Ending balance at Sep. 30, 2018	8,946	260	11,945	(1,667)	(2,930)	4	7,612	1,334
Beginning balance at Dec. 31, 2017											0
Ending balance at Sep. 30, 2018											0
Beginning balance at Jun. 30, 2018	8,995	260	12,011	(1,748)	(2,887)	4	7,640	1,355
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to common stock	81			81			81
Net income (loss) attributable to noncontrolling interest									80	0	0
Distributions to noncontrolling interest - Egypt	(101)							(101)
Common dividends	(96)		(96)				(96)
Other	(13)		30		(43)		(13)
Ending balance at Sep. 30, 2018	8,946	260	11,945	(1,667)	(2,930)	4	7,612	1,334
Beginning balance at Jun. 30, 2018											0
Ending balance at Sep. 30, 2018											0
Beginning balance at Dec. 31, 2018	8,812	260	12,106	(2,048)	(3,192)	4	7,130	1,682
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to common stock	(577)			(577)			(577)
Net income (loss) attributable to noncontrolling interest									125	(5)	22
Distributions to noncontrolling interest - Egypt	(235)							(235)
Common dividends	(282)		(282)				(282)
Other	30	1	28		2	(1)	30
Ending balance at Sep. 30, 2019	7,868	261	11,852	(2,625)	(3,190)	3	6,301	1,567
Beginning balance at Dec. 31, 2018	0										0
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of Altus Preferred Units											517
Net income attributable to Altus Preferred Unit limited partners											22
Ending balance at Sep. 30, 2019	539										539
Beginning balance at Jun. 30, 2019	8,154	261	11,931	(2,455)	(3,190)	4	6,551	1,603
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to common stock	(170)			(170)			(170)
Net income (loss) attributable to noncontrolling interest									$ 38	$ (3)	18
Distributions to noncontrolling interest - Egypt	(71)							(71)
Common dividends	(94)		(94)				(94)
Other	14		15			(1)	14
Ending balance at Sep. 30, 2019	7,868	$ 261	$ 11,852	$ (2,625)	$ (3,190)	$ 3	$ 6,301	$ 1,567
Beginning balance at Jun. 30, 2019											521
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income attributable to Altus Preferred Unit limited partners											18
Ending balance at Sep. 30, 2019	$ 539										$ 539