Derivatives - Not Designated (Details) - Derivatives not designated as hedging instruments - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Derivatives not designated as hedging instruments | |||
| Gain (Loss) on Derivative Recognized in Income | $ (96) | $ (130) | $ (5) |
| Foreign currency forward/option contracts | Cost of sales | |||
| Derivatives not designated as hedging instruments | |||
| Gain (Loss) on Derivative Recognized in Income | 13 | 11 | (14) |
| Foreign currency forward contracts | Interest expense. | |||
| Derivatives not designated as hedging instruments | |||
| Gain (Loss) on Derivative Recognized in Income | $ (109) | $ (141) | $ 9 |