Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 17	$ (1)	$ 114	$ 124
Other comprehensive income (loss):
Foreign currency translation adjustments	(10)	6	(11)	(11)
Derivatives:
Unrealized gain (loss) on derivatives, before tax	3	3	10	(10)
Unrealized gain (loss) on derivatives, tax portion	(1)	(1)	(3)	2
Unrealized gain (loss) on derivatives, net of tax	2	2	7	(8)
Defined benefit plans:
Defined benefit plan adjustment, before tax	3	3	8	7
Defined benefit plan adjustment, tax portion	(1)	(1)	(2)	(2)
Defined benefit plan adjustment, net of tax	2	2	6	5
Other comprehensive (loss) income	(6)	10	2	(14)
Comprehensive income	$ 11	$ 9	$ 116	$ 110