INTERIM CONSOLIDATED STATEMENTS OF COMPREHENSIVE 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 (loss) income	$ (7)	$ (36)	$ 66	$ 11
Other comprehensive income (loss):
Foreign currency translation adjustments	(4)	1	(5)	0
Derivative instrument adjustment, net of tax	(4)		(20)
Derivative instrument adjustment, net of tax		(1)		(1)
OTHER COMPREHENSIVE LOSS, NET OF TAX	(8)	0	(25)	(1)
Net income attributable to noncontrolling interests	(2)	0	(2)	0
Other comprehensive income attributable to noncontrolling interests	0	0	0	0
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(2)	0	(2)	0
COMPREHENSIVE (LOSS) INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ (17)	$ (36)	$ 39	$ 10