Derivative Instruments - Location and Amounts of Pre-Tax Gains (Losses) on Cash Flow Hedges (Details) - Foreign exchange forward contracts - Designated as Hedging Instrument - Cash Flow Hedging - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
---|---|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2017 |
Sep. 30, 2016 |
|
Derivative Instruments, Gain (Loss) [Line Items] | ||||
Gain (Loss) Recognized in Accumulated Other Comprehensive Loss (effective portion) | $ 3 | $ 1 | $ 2 | $ 3 |
Selling and general expenses | ||||
Derivative Instruments, Gain (Loss) [Line Items] | ||||
Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income (effective portion) | $ 2 | $ 1 | $ 6 | $ 3 |