Statement of Consolidated Changes in Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock [Member]	Paid-In Capital [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Loss [Member]	Apache Shareholders' Equity [Member]	Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2015	$ 9,490	$ 257	$ 12,619	$ (1,980)	$ (2,889)	$ (119)	$ 7,888	$ 1,602
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(371)			(372)			(372)	1
Distributions to noncontrolling interest	(54)							(54)
Common dividends	(95)		(95)				(95)
Other	30	0	29		1		30
Ending Balance at Mar. 31, 2016	9,000	257	12,553	(2,352)	(2,888)	(119)	7,451	1,549
Beginning Balance at Dec. 31, 2016	7,679	258	12,364	(3,385)	(2,887)	(112)	6,238	1,441
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	267			213			213	54
Distributions to noncontrolling interest	(57)							(57)
Common dividends	(95)		(95)				(95)
Other	29	0	36	(7)			29
Ending Balance at Mar. 31, 2017	$ 7,823	$ 258	$ 12,305	$ (3,179)	$ (2,887)	$ (112)	$ 6,385	$ 1,438