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
Mar. 31, 2018
Dec. 31, 2017
Asset Derivatives    
Asset Derivatives $ 90 $ 107
Net Amounts if Right of Offset had been Applied 58 87
Derivative Liabilities [Abstract]    
Liability Derivatives 466 332
Net Amounts if Right of Offset had been Applied 434 312
Designated as Hedging Instrument | Foreign exchange contracts | Other current assets    
Asset Derivatives    
Asset Derivatives 4 2
Net Amounts if Right of Offset had been Applied 0 0
Designated as Hedging Instrument | Foreign exchange contracts | Other non-current assets    
Asset Derivatives    
Asset Derivatives 9 1
Net Amounts if Right of Offset had been Applied 0 0
Designated as Hedging Instrument | Foreign exchange contracts | Other current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 144 93
Net Amounts if Right of Offset had been Applied 140 91
Designated as Hedging Instrument | Foreign exchange contracts | Other non-current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 249 194
Net Amounts if Right of Offset had been Applied 240 193
Designated as Hedging Instrument | Interest rate contracts | Other current assets    
Asset Derivatives    
Asset Derivatives 0 1
Net Amounts if Right of Offset had been Applied 0 1
Designated as Hedging Instrument | Interest rate contracts | Other non-current assets    
Asset Derivatives    
Asset Derivatives 31 59
Net Amounts if Right of Offset had been Applied 10 43
Designated as Hedging Instrument | Interest rate contracts | Other current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 0 0
Net Amounts if Right of Offset had been Applied 0 0
Designated as Hedging Instrument | Interest rate contracts | Other non-current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 51 28
Net Amounts if Right of Offset had been Applied 30 12
Not Designated as Hedging Instrument | Foreign exchange contracts | Other current assets    
Asset Derivatives    
Asset Derivatives 14 18
Net Amounts if Right of Offset had been Applied 16 17
Not Designated as Hedging Instrument | Foreign exchange contracts | Other non-current assets    
Asset Derivatives    
Asset Derivatives 8 0
Net Amounts if Right of Offset had been Applied 8 0
Not Designated as Hedging Instrument | Foreign exchange contracts | Other current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 15 1
Net Amounts if Right of Offset had been Applied 17 0
Not Designated as Hedging Instrument | Foreign exchange contracts | Other non-current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 7 0
Net Amounts if Right of Offset had been Applied 7 0
Not Designated as Hedging Instrument | Interest rate contracts | Other non-current assets    
Asset Derivatives    
Asset Derivatives 24 26
Net Amounts if Right of Offset had been Applied 24 26
Not Designated as Hedging Instrument | Interest rate contracts | Other non-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 | Investment market price contracts | Other current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 0 16
Net Amounts if Right of Offset had been Applied $ 0 $ 16