Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 48	$ 66	$ 152	$ 220
Other comprehensive income (loss), net of income taxes:
Currency translation adjustment	(2)		(2)
Employee benefit plans			(1)
Interest rate derivatives	24		35	2
Other comprehensive income, net of income taxes	22		32	2
Comprehensive income	$ 70	$ 66	$ 184	$ 222