OTHER CURRENT LIABILITIES (Detail) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Accrued operating expenses	$ 78	$ 65
Accrued exploration and development	535	667
Accrued gathering, processing, and transmission - Altus	34	81
Accrued compensation and benefits	135	177
Accrued interest	117	137
Accrued income taxes	126	58
Current asset retirement obligation	66	66
Current operating lease liability	172
Liabilities held for sale	49	0
Other	131	90
Total other current liabilities	$ 1,443	$ 1,341