Derivatives and Hedging Activities - Gains and Losses on Net Investment Hedges (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Derivative [Line Items] | |||
| Gain (Loss) Recognized On Foreign Currency Denominated Debt Designated As Foreign Currency Hedge | $ 386 | $ (297) | $ (19) |
| Foreign Exchange Contract [Member] | Net Investment Hedging [Member] | |||
| Derivative [Line Items] | |||
| Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income, Effective Portion, Net | $ 755 | $ (126) | $ 6 |