Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
NET INCOME (LOSS)	$ 110	$ 40	$ (3,475)	$ 102
OTHER COMPREHENSIVE LOSS:
Foreign currency translation adjustment, net of $3, $44, $2, $30 tax	(8)	(235)	(5)	(163)
Other comprehensive loss, net of tax	(8)	(235)	(5)	(163)
COMPREHENSIVE INCOME (LOSS)	$ 102	$ (195)	$ (3,480)	$ (61)