Derivative Instruments - Designation (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Derivatives, Fair Value
Total asset derivatives	$ 5	$ 15	$ 10
Total liability derivatives	9	5	2
Derivatives not designated as hedging instruments | Foreign exchange contracts | Receivables
Derivatives, Fair Value
Total asset derivatives	2	9	8
Derivatives not designated as hedging instruments | Foreign exchange contracts | Other liabilities (current)
Derivatives, Fair Value
Total liability derivatives	3	5	2
Derivatives not designated as hedging instruments | Interest rate swaps | Receivables
Derivatives, Fair Value
Total asset derivatives	2
Derivatives designated as hedging instruments | Commodity futures contracts | Receivables
Derivatives, Fair Value
Total asset derivatives	1	$ 6	$ 2
Derivatives designated as hedging instruments | Commodity futures contracts | Other liabilities (current)
Derivatives, Fair Value
Total liability derivatives	1
Derivatives designated as hedging instruments | Interest rate swaps | Other liabilities (noncurrent)
Derivatives, Fair Value
Total liability derivatives	$ 5