Consolidated Statements of Comprehensive Income - 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	$ 136	$ 82	$ 276	$ 104
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	2	59	(7)	(78)
Other comprehensive income (loss)	2	59	(7)	(78)
Comprehensive income	$ 138	$ 141	$ 269	$ 26