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Summary of Gains and Losses on Derivative Instruments (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Derivative Instruments, Gain (Loss) [Line Items]      
Gains (losses) on hedging activities reclassified from AOCI to net income, before tax [1] $ 6 $ 47  
Other (income) expense, net | Not Designated as Hedging Instrument      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (loss) recognized in income, undesignated derivative instruments 4 (13) $ 49
Interest rate contract | Other (income) expense, net      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains (losses) on hedging activities reclassified from AOCI to net income, before tax [1] 9    
Cash Flow Hedges      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (loss) recognized in OCI 1 3 52
Gains (losses) on hedging activities reclassified from AOCI to net income, before tax 6 47 13
Cash Flow Hedges | Interest rate contract | Other (income) expense, net      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains (losses) on hedging activities reclassified from AOCI to net income, before tax 9   (1)
Cash Flow Hedges | Foreign Exchange Contracts One      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (loss) recognized in OCI   (1) 1
Cash Flow Hedges | Foreign Exchange Contracts One | Net Sales      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains (losses) on hedging activities reclassified from AOCI to net income, before tax     1
Cash Flow Hedges | Foreign Exchange Contracts Two      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (loss) recognized in OCI 1 4 51
Cash Flow Hedges | Foreign Exchange Contracts Two | Cost of Sales      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains (losses) on hedging activities reclassified from AOCI to net income, before tax (3) 47 13
Fair value hedges | Net Interest Expense      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (loss) recognized in income, fair value hedges $ 9 $ (43) $ 68
[1] Amounts in parentheses indicate reductions to net income.