INTERIM CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (58)	$ (7)	$ (225)	$ 66
Other comprehensive income (loss):
Foreign currency translation adjustments	5	(4)	(9)	(5)
Derivative instrument adjustment, net of tax	3	(4)	(22)	(20)
OTHER COMPREHENSIVE GAIN (LOSS), NET OF TAX	8	(8)	(31)	(25)
Net income attributable to noncontrolling interests	(4)	(2)	(13)	(2)
Other comprehensive income attributable to noncontrolling interests	0	0	0	0
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(4)	(2)	(13)	(2)
COMPREHENSIVE (LOSS) INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ (54)	$ (17)	$ (269)	$ 39