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Summary of Gains and Losses on Derivative Instruments (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (loss) recognized in income, fair value hedges $ 1 $ (22)
Other expense (income), net | Not Designated as Hedging Instrument    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (loss) recognized in income, undesignated derivative instruments   6
Cash Flow Hedges    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (loss) recognized in OCI (8) (4)
Gains (losses) on hedging activities reclassified from AOCI to net income, before tax 2 5
Cash Flow Hedges | Interest rate contract | Other expense (income), net    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) on hedging activities reclassified from AOCI to net income, before tax   4
Cash Flow Hedges | Foreign exchange contract    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (loss) recognized in OCI (8) (4)
Cash Flow Hedges | Foreign exchange contract | Cost of sales    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) on hedging activities reclassified from AOCI to net income, before tax 2 1
Fair value hedges | Net Interest Expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (loss) recognized in income, fair value hedges $ (1) $ 22