Derivatives - Not Designated (Details) - Derivatives not designated as hedging instruments - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Derivatives not designated as hedging instruments | |||
| Gain (Loss) on Derivative Recognized in income | $ (130) | $ (5) | $ 84 |
| Foreign currency forward/option contracts | Cost of sales | |||
| Derivatives not designated as hedging instruments | |||
| Gain (Loss) on Derivative Recognized in income | 11 | (14) | 5 |
| Foreign currency forward contracts | Interest expense | |||
| Derivatives not designated as hedging instruments | |||
| Gain (Loss) on Derivative Recognized in income | $ (141) | $ 9 | 82 |
| Commodity price swap contracts | Cost of sales | |||
| Derivatives not designated as hedging instruments | |||
| Gain (Loss) on Derivative Recognized in income | $ (3) | ||