Derivative Instruments - Narrative (Details) - Foreign exchange forward contracts - USD ($) $ in Millions |
3 Months Ended | |
---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
|
Fair Value Hedging | Not Designated as Hedging Instrument | ||
Derivative [Line Items] | ||
Aggregate notional value | $ 156 | |
Net loss on derivative | 1 | |
Cash Flow Hedging | Designated as Hedging Instrument | ||
Derivative [Line Items] | ||
Aggregate notional value | $ 275 | $ 255 |
Maturity of derivatives | 12 months | |
Net gains related to derivatives recorded in other comprehensive income (loss) expected to be reclassified into earnings | $ 3 |