INTERIM CONSOLIDATED STATEMENTS OF COMPREHENSIVE 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	$ 49	$ 11	$ 73	$ 47
Other comprehensive income (loss):
Foreign currency translation adjustments	(2)	(7)	(1)	(1)
Derivative instrument adjustment, net of tax	(13)	0	(16)	0
OTHER COMPREHENSIVE LOSS, NET OF TAX	(15)	(7)	(17)	(1)
Net income attributable to noncontrolling interests	0	0	0	0
Other comprehensive income attributable to noncontrolling interests	0	0	0	0
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	0	0	0	0
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 34	$ 4	$ 56	$ 46