Derivatives and Hedging - Interest Rate Management Risk Narrative (Details) - Foreign exchange contracts - USD ($) $ in Millions |
3 Months Ended | |
---|---|---|
Mar. 31, 2020 |
Mar. 31, 2019 |
|
Derivative [Line Items] | ||
Estimated pretax losses currently included within Accumulated Other Comprehensive Loss that will be reclassified to earnings in next twelve months | $ 14 | |
Not Designated as Hedging Instrument | ||
Derivative [Line Items] | ||
Derivative gain (loss) | $ (35) | $ 5 |