Financial Instruments - Summary of Derivative Instruments Fair Value (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Net Derivative (Liability) Asset	$ (5)	$ 11
Other Assets
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative instruments - assets	3	15
Other Liabilities
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative instruments - liabilities	(8)	(4)
Derivatives Designated as Hedging Instruments | Other Assets
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Net Derivative (Liability) Asset	(3)
Derivatives Designated as Hedging Instruments | Other Liabilities
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Net Derivative (Liability) Asset		5
Foreign exchange contracts – forwards | Derivatives Designated as Hedging Instruments
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Net Derivative (Liability) Asset	(4)	8
Foreign exchange contracts – forwards | Derivatives Designated as Hedging Instruments | Other current assets
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative instruments - assets	1	7
Foreign exchange contracts – forwards | Derivatives Designated as Hedging Instruments | Accrued expensed and other current liabilities
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative instruments - liabilities	(5)	0
Foreign exchange contracts – forwards | Derivatives NOT Designated as Hedging Instruments | Other current assets
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative instruments - assets	1	7
Foreign exchange contracts – forwards | Derivatives NOT Designated as Hedging Instruments | Accrued expensed and other current liabilities
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative instruments - liabilities	(3)	(1)
Foreign exchange contracts – forwards | Derivatives NOT Designated as Hedging Instruments | Other Assets
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Net Derivative (Liability) Asset	(2)
Foreign exchange contracts – forwards | Derivatives NOT Designated as Hedging Instruments | Other Liabilities
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Net Derivative (Liability) Asset		6
Foreign currency options | Derivatives Designated as Hedging Instruments | Other current assets
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative instruments - assets	0	1
Interest rate swaps | Derivatives Designated as Hedging Instruments | Other long-term assets
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative instruments - assets	1	0
Interest rate swaps | Derivatives Designated as Hedging Instruments | Other long-term liabilities
Summary Of Derivative Instruments By Hedge Designation [Abstract]
Derivative instruments - liabilities	$ 0	$ 3