OTHER CURRENT LIABILITIES (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Accrued operating expenses	$ 143	$ 65
Accrued exploration and development	319	667
Accrued gathering, processing, and transmission - Altus	17	81
Accrued compensation and benefits	212	177
Accrued interest	135	137
Accrued income taxes	51	58
Current asset retirement obligation	47	66
Current operating lease liability	169	0
Other	56	90
Total Other current liabilities	$ 1,149	$ 1,341