OTHER CURRENT ASSETS (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Inventories	$ 475	$ 401
Drilling advances	161	218
Assets held for sale	18	0
Prepaid assets and other	84	160
Total other current assets	$ 738	$ 779