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Derivative Financial Instruments - Derivative Instruments and their Balance Sheet Classifications (Detail) - USD ($)
$ in Millions
Sep. 30, 2019
Dec. 31, 2018
Derivatives, Fair Value [Line Items]    
Asset Derivatives $ 5 $ 6
Liability Derivatives 47 36
Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Asset Derivatives 3 2
Liability Derivatives 38 28
Not Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Asset Derivatives 2 4
Liability Derivatives 9 8
Foreign Exchange Contracts [Member] | Designated as Hedging Instruments [Member] | Accrued liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Liability Derivatives 29 17
Foreign Exchange Contracts [Member] | Not Designated as Hedging Instruments [Member] | Accrued liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Liability Derivatives 9 6
Foreign Exchange Contracts [Member] | Prepaid and Other Current Assets [Member] | Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Asset Derivatives 3 2
Foreign Exchange Contracts [Member] | Prepaid and Other Current Assets [Member] | Not Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Asset Derivatives 1 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 $ 9 11
Foreign Exchange Contracts [Member] | Other Liabilities [Member] | Not Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Liability Derivatives   $ 2