Derivative Financial Instruments - Derivative Instruments and their Balance Sheet Classifications (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 46	$ 18
Liability Derivatives	15	26
Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	29	9
Liability Derivatives	11	20
Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	17	9
Liability Derivatives	4	6
Foreign Exchange Contracts [Member] | Designated as Hedging Instruments [Member] | Accrued liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	11	18
Foreign Exchange Contracts [Member] | Not Designated as Hedging Instruments [Member] | Accrued liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	4	6
Foreign Exchange Contracts [Member] | Prepaid and Other Current Assets [Member] | Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	17	5
Foreign Exchange Contracts [Member] | Prepaid and Other Current Assets [Member] | Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	17	8
Foreign Exchange Contracts [Member] | Other Assets [Member] | Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 12	4
Foreign Exchange Contracts [Member] | Other Assets [Member] | Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives		1
Foreign Exchange Contracts [Member] | Other Liabilities [Member] | Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives		$ 2