Consolidated Statements of Comprehensive Income - 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	$ 89	$ 26	$ 365	$ 130
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	(37)	10	(44)	(68)
Other comprehensive income (loss)	(37)	10	(44)	(68)
Comprehensive income	$ 52	$ 36	$ 321	$ 62