Quarterly report pursuant to Section 13 or 15(d)

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

v3.2.0.727
Location on the Balance Sheet of Derivative Assets and Liabilities (Detail) - Fair Value, Inputs, Level 2 - USD ($)
$ in Millions
Jun. 30, 2015
Dec. 31, 2014
Asset Derivatives    
Asset Derivatives $ 792 $ 721
Derivative Asset, Fair Value, Net 756 686
Derivative Liabilities [Abstract]    
Liability Derivatives 54 77
Derivative Liability, Fair Value, Amount Offset Against Collateral 18 42
Designated as Hedging Instrument | Foreign Exchange Contracts | Other current assets    
Asset Derivatives    
Asset Derivatives 337 204
Derivative Asset, Fair Value, Net 337 204
Designated as Hedging Instrument | Foreign Exchange Contracts | Other noncurrent assets    
Asset Derivatives    
Asset Derivatives 161 229
Derivative Asset, Fair Value, Net 161 229
Designated as Hedging Instrument | Foreign Exchange Contracts | Other non-current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 0 34
Derivative Liability, Fair Value, Amount Offset Against Collateral 0 34
Designated as Hedging Instrument | Interest Rate Contracts | Other noncurrent assets    
Asset Derivatives    
Asset Derivatives 218 227
Derivative Asset, Fair Value, Net 185 194
Designated as Hedging Instrument | Interest Rate Contracts | Other non-current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 34 35
Derivative Liability, Fair Value, Amount Offset Against Collateral 1 2
Not Designated as Hedging Instrument | Foreign Exchange Contracts | Other current assets    
Asset Derivatives    
Asset Derivatives 19 2
Derivative Asset, Fair Value, Net 19 2
Not Designated as Hedging Instrument | Foreign Exchange Contracts | Other current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 2 0
Derivative Liability, Fair Value, Amount Offset Against Collateral 2 0
Not Designated as Hedging Instrument | Price Risk Derivative [Member] | Other current assets    
Asset Derivatives    
Asset Derivatives 1 0
Derivative Asset, Fair Value, Net 0 0
Not Designated as Hedging Instrument | Price Risk Derivative [Member] | Other current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 10 0
Derivative Liability, Fair Value, Amount Offset Against Collateral 9 0
Not Designated as Hedging Instrument | Interest Rate Contracts | Other noncurrent assets    
Asset Derivatives    
Asset Derivatives 56 59
Derivative Asset, Fair Value, Net 54 57
Not Designated as Hedging Instrument | Interest Rate Contracts | Other current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 0 1
Derivative Liability, Fair Value, Amount Offset Against Collateral 0 1
Not Designated as Hedging Instrument | Interest Rate Contracts | Other non-current liabilities    
Derivative Liabilities [Abstract]    
Liability Derivatives 8 7
Derivative Liability, Fair Value, Amount Offset Against Collateral $ 6 $ 5