Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 44	$ (43)	$ 97	$ 125
Other comprehensive income (loss):
Foreign currency translation adjustments	7	2	(1)	(17)
Derivatives:
Unrealized gain (loss) on derivatives, before tax	3	1	7	(13)
Unrealized gain (loss) on derivatives, tax portion	(1)	0	(2)	3
Unrealized gain on derivatives, net of tax	2	1	5	(10)
Defined benefit plans:
Defined benefit plan adjustment, before tax	3	1	5	4
Defined benefit plan adjustment, tax portion	(1)	0	(1)	(1)
Defined benefit plan adjustment, net of tax	2	1	4	3
Other comprehensive income (loss)	11	4	8	(24)
Comprehensive income (loss)	$ 55	$ (39)	$ 105	$ 101