Financial Instruments - Summary of Derivative Instruments Fair Value (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative Assets	$ 7	$ 3
Derivative Liabilities	(3)	(8)
Net derivative asset (liability)	4	(5)
Derivatives Designated as Hedging Instruments
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Net derivative asset (liability)	1	(3)
Derivatives Designated as Hedging Instruments | Other current assets | Foreign exchange contracts - forwards
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative Assets	3	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	(2)	(5)
Derivatives Designated as Hedging Instruments | Other long-term assets | Interest rate swaps
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative Assets	0	1
Not Designated as Hedging Instrument | Foreign exchange contracts - forwards
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Net derivative asset (liability)	3	(2)
Not Designated as Hedging Instrument | Other current assets | Foreign exchange contracts - forwards
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative Assets	4	1
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	$ (1)	$ (3)