INTERIM CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (62)	$ 49	$ (167)	$ 73
Other comprehensive income (loss):
Foreign currency translation adjustments	3	(2)	(14)	(1)
Derivative instrument adjustment, net of tax	(1)	(13)	(25)	(16)
OTHER COMPREHENSIVE GAIN (LOSS), NET OF TAX	2	(15)	(39)	(17)
Net income attributable to noncontrolling interests	(8)	0	(9)	0
Other comprehensive income attributable to noncontrolling interests	0	0	0	0
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(8)	0	(9)	0
COMPREHENSIVE (LOSS) INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ (68)	$ 34	$ (215)	$ 56