INCOME TAXES (Detail) - USD ($) $ in Millions		3 Months Ended			9 Months Ended		12 Months Ended
	Jan. 01, 2016	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2015
Income Tax Contingency [Line Items]
Deferred income tax expense (benefit)		$ (111)		$ (529)	$ (758)	$ (755)
Current tax benefit		30
North Sea
Income Tax Contingency [Line Items]
Deferred income tax expense (benefit)				$ (235)
Effective income tax rate	40.00%						50.00%
Apache Canada Ltd. (ACL) | Disposed of by sale
Income Tax Contingency [Line Items]
Deferred income tax expense (benefit)		$ 2	$ (674)