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Hedges and Derivative Financial Instruments - Schedule of Outstanding Derivative Contracts (Details) - USD ($)
$ in Millions
 9 Months Ended 12 Months Ended
Sep. 30, 2016
Dec. 31, 2015
Derivatives, Fair Value [Line Items]    
Fair value of hedged assets $ 62 $ 54
Fair value of hedged liabilities 43 96
Derivative asset at fair value, current 55 54
Derivative asset at fair value, noncurrent 7 0
Total derivatives, hedge assets at fair value 62 54
Derivative liability at fair value, current 40 79
Derivative liability at fair value, noncurrent 3 17
Total derivatives, hedge liabilities at fair value 43 96
Derivatives accounted for as hedges    
Derivatives, Fair Value [Line Items]    
Fair value of hedged assets 42 32
Fair value of hedged liabilities 29 74
Derivatives accounted for as hedges | Foreign exchange forwards/options    
Derivatives, Fair Value [Line Items]    
Notional Amount 860 886
Fair value of hedged assets 24 31
Fair value of hedged liabilities $ 12 $ 8
Maximum term of foreign exchange forwards/options 15 months 12 months
Derivatives accounted for as hedges | Commodity swaps/options    
Derivatives, Fair Value [Line Items]    
Notional Amount $ 283 $ 322
Fair value of hedged assets 18 1
Fair value of hedged liabilities $ 17 $ 66
Maximum term of commodity swaps/options 31 months 33 months
Derivatives not accounted for as hedges    
Derivatives, Fair Value [Line Items]    
Fair value of hedged assets $ 20 $ 22
Fair value of hedged liabilities 14 22
Derivatives not accounted for as hedges | Foreign exchange forwards/options    
Derivatives, Fair Value [Line Items]    
Notional Amount 2,140 2,886
Fair value of hedged assets 20 22
Fair value of hedged liabilities $ 14 $ 21
Maximum term of foreign exchange forwards/options 10 months 11 months
Derivatives not accounted for as hedges | Commodity swaps/options    
Derivatives, Fair Value [Line Items]    
Notional Amount $ 1 $ 7
Fair value of hedged assets 0 0
Fair value of hedged liabilities $ 0 $ 1
Maximum term of commodity swaps/options 5 months 6 months