Derivatives and Hedging Activities - Summary of Information About CVA and FVA (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Derivative Instruments and Hedging Activities Disclosure [Abstract] | |||
| CVA, net of hedges | $ 25 | $ (143) | $ (289) |
| FVA, net of hedges | 60 | 173 | 485 |
| Total | $ 85 | $ 30 | $ 196 |