OTHER CURRENT LIABILITIES (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Payables and Accruals [Abstract]
Accrued operating expenses	$ 76	$ 72
Accrued exploration and development	603	680
Accrued gathering, transmission, and processing	70	122
Accrued compensation and benefits	90	115
Accrued interest	141	145
Accrued income taxes	110	55
Current asset retirement obligation	38	43
Other	102	141
Total other current liabilities	$ 1,230	$ 1,373