Accumulated Other Comprehensive Income (Loss) - Summary of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	$ (2,308)	$ (2,133)
Total other comprehensive income, net of tax	111	39
Ending balance	(2,300)	(2,046)
Foreign Exchange Translation Adjustment
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(81)	153
Other comprehensive income (loss) before reclassifications	110	39
Total other comprehensive income, net of tax	110	39
Ending balance	29	192
Changes in Fair Value of Effective Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(3)	4
Amounts reclassified from accumulated other comprehensive income (loss)	1
Total other comprehensive income, net of tax	1
Ending balance	(2)	4
Pension Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(45)	(27)
Ending balance	(45)	(27)
Total Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(129)	130
Other comprehensive income (loss) before reclassifications	110	39
Amounts reclassified from accumulated other comprehensive income (loss)	1
Total other comprehensive income, net of tax	111	39
Ending balance	$ (18)	$ 169