Financial Instruments - Summary of Derivative Instruments Fair Value (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative assets	$ 5	$ 7
Derivative liabilities	(9)	(5)
Net derivative asset (liability)	(4)	2
Derivatives Designated as Hedging Instruments
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Net derivative asset (liability)	(4)	2
Derivatives Designated as Hedging Instruments | Other current assets | Foreign exchange contracts - forwards
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative assets	3	3
Derivatives Designated as Hedging Instruments | Other current assets | Foreign currency options
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative assets	0	1
Derivatives Designated as Hedging Instruments | Accrued expenses and other current liabilities | Foreign exchange contracts - forwards
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative liabilities	(7)	(2)
Not Designated as Hedging Instrument | Foreign exchange contracts - forwards
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Net derivative asset (liability)	0	0
Not Designated as Hedging Instrument | Other current assets | Foreign exchange contracts - forwards
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative assets	2	3
Not Designated as Hedging Instrument | Accrued expenses and other current liabilities | Foreign exchange contracts - forwards
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative liabilities	$ (2)	$ (3)