Derivatives and Hedging - Additional Information (Detail) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Derivative [Line Items] | ||
| Derivative maximum risk of loss | $ 17 | $ 17 |
| Forward Foreign Currency Exchange Contracts [Member] | ||
| Derivative [Line Items] | ||
| Notional value | $ 1,800 | $ 2,800 |
| Derivative Expiration Dates | 2022-01 | 2021-01 |
| Total Return Swaps [Member] | ||
| Derivative [Line Items] | ||
| Notional value | $ 720 | $ 833 |