Quarterly report pursuant to Section 13 or 15(d)

Location on the Balance Sheet of Derivative Assets and Liabilities (Detail)

v3.8.0.1
Location on the Balance Sheet of Derivative Assets and Liabilities (Detail) - Fair Value, Inputs, Level 2 - USD ($)
$ in Millions
Sep. 30, 2017
Dec. 31, 2016
Asset Derivatives    
Asset Derivatives $ 150 $ 487
Net Amounts if Right of Offset had been Applied 127 462
Derivative Liabilities [Abstract]    
Liability Derivatives 287 45
Net Amounts if Right of Offset had been Applied 264 20
Designated as Hedging Instrument | Foreign exchange contracts | Other current assets    
Asset Derivatives    
Asset Derivatives 21 176
Net Amounts if Right of Offset had been Applied 15 176
Designated as Hedging Instrument | Foreign exchange contracts | Other non-current assets    
Asset Derivatives    
Asset Derivatives 3 131
Net Amounts if Right of Offset had been Applied 0 126
Designated as Hedging Instrument | Foreign exchange contracts | Other current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 62 0
Net Amounts if Right of Offset had been Applied 56 0
Designated as Hedging Instrument | Foreign exchange contracts | Other non-current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 155 6
Net Amounts if Right of Offset had been Applied 152 1
Designated as Hedging Instrument | Interest rate contracts | Other current assets    
Asset Derivatives    
Asset Derivatives 4 0
Net Amounts if Right of Offset had been Applied 4 0
Designated as Hedging Instrument | Interest rate contracts | Other non-current assets    
Asset Derivatives    
Asset Derivatives 88 137
Net Amounts if Right of Offset had been Applied 75 119
Designated as Hedging Instrument | Interest rate contracts | Other current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 0 (1)
Net Amounts if Right of Offset had been Applied 0 1
Designated as Hedging Instrument | Interest rate contracts | Other non-current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 18 21
Net Amounts if Right of Offset had been Applied 5 3
Not Designated as Hedging Instrument | Foreign exchange contracts | Other current assets    
Asset Derivatives    
Asset Derivatives 0 1
Net Amounts if Right of Offset had been Applied 0 1
Not Designated as Hedging Instrument | Foreign exchange contracts | Other current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 0 0
Net Amounts if Right of Offset had been Applied 0 0
Not Designated as Hedging Instrument | Interest rate contracts | Other non-current assets    
Asset Derivatives    
Asset Derivatives 34 42
Net Amounts if Right of Offset had been Applied 33 40
Not Designated as Hedging Instrument | Interest rate contracts | Other non-current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 5 7
Net Amounts if Right of Offset had been Applied 4 5
Not Designated as Hedging Instrument | Investment market price contracts | Other current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 47 10
Net Amounts if Right of Offset had been Applied $ 47 $ 10