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Derivative Financial Instruments - Derivative Instruments and their Balance Sheet Classifications (Detail) - USD ($)
$ in Millions
Mar. 31, 2017
Dec. 31, 2016
Derivatives, Fair Value [Line Items]    
Derivative Assets $ 80 $ 62
Derivative Liabilities 55 77
Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Assets 4 30
Derivative Liabilities 31 48
Not Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Assets 76 32
Derivative Liabilities 24 29
Foreign Exchange Contracts [Member] | Prepaid and Other Current Assets [Member] | Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Assets 3 24
Foreign Exchange Contracts [Member] | Prepaid and Other Current Assets [Member] | Designated as Hedging Instruments [Member] | Accrued liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Liabilities 29 37
Foreign Exchange Contracts [Member] | Prepaid and Other Current Assets [Member] | Not Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Assets 76 32
Foreign Exchange Contracts [Member] | Prepaid and Other Current Assets [Member] | Not Designated as Hedging Instruments [Member] | Accrued liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Liabilities 24 29
Foreign Exchange Contracts [Member] | Other Liabilities [Member] | Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Liabilities 2 11
Foreign Exchange Contracts [Member] | Other Assets [Member] | Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Assets $ 1 $ 6