Changes in Accumulated Other Comprehensive Income (Details) - Summary of Changes in Accumulated Other Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Changes in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	$ (31)	$ (58)	$ (27)	$ (1)
Other comprehensive income before reclassifications, net of tax	0	3	(4)	(54)
Ending Balance	(31)	(55)	(31)	(55)
Beginning Balance Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	(20)	(45)	(11)	(3)
Foreign currency translation adjustments	0	6	(9)	(36)
Ending Balance Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	(20)	(39)	(20)	(39)
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	(11)	(13)	(16)	2
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax, Parent	0	(3)	5	(18)
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	$ (11)	$ (16)	$ (11)	$ (16)