Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
NET INCOME (LOSS)	$ 114	$ 88	$ (3,361)	$ 190
OTHER COMPREHENSIVE LOSS:
Foreign currency translation adjustments, net of $22, $(1), $24 and $29 tax	(110)	(1)	(115)	(164)
Other comprehensive loss, net of tax	(110)	(1)	(115)	(164)
COMPREHENSIVE INCOME (LOSS)	$ 4	$ 87	$ (3,476)	$ 26