STATEMENT OF CONSOLIDATED CHANGES IN EQUITY (Unaudited) - USD ($) $ in Millions	Total	Common Stock [Member]	Additional 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)	(571)			(616)			(616)	45
Distributions to noncontrolling interest	(93)							(93)
Common dividends ($0.50 per share)	(189)		(189)				(189)
Other	59	1	57		1		59
Ending Balance at Jun. 30, 2016	8,696	258	12,487	(2,596)	(2,888)	(119)	7,142	1,554
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)	880			785			785	95
Distributions to noncontrolling interest	(170)							(170)
Common dividends ($0.50 per share)	(190)		(190)				(190)
Other	66	1	72	(7)			66
Ending Balance at Jun. 30, 2017	$ 8,265	$ 259	$ 12,246	$ (2,607)	$ (2,887)	$ (112)	$ 6,899	$ 1,366