Investments - Summary of Carrying Value of Total Investments (Detail) - USD ($) $ in Millions |
Dec. 31, 2021 |
Dec. 31, 2020 |
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|---|---|---|---|---|
| Schedule of Investments [Line Items] | ||||
| Held-to-maturity investments | $ 430 | $ 310 | ||
| Trading securities (including $1,140 trading debt securities of CIPs) | 1,186 | 1,964 | ||
| Total debt securities | 1,616 | 2,274 | ||
| Equity securities at FVTNI (including $1,485 equity securities at FVTNI of CIPs) | 1,738 | 2,317 | ||
| Total investments | [1] | 7,262 | 6,919 | |
| Bank loans | 284 | 248 | ||
| Other Investments [Member] | ||||
| Schedule of Investments [Line Items] | ||||
| Total investments | 279 | 278 | ||
| Equity Method Investments [Member] | ||||
| Schedule of Investments [Line Items] | ||||
| Total investments | 1,694 | 1,081 | ||
| Federal Reserve Bank Stock [Member] | ||||
| Schedule of Investments [Line Items] | ||||
| Total investments | 96 | 94 | ||
| Consolidated Entities [Member] | Carried Interest [Member] | ||||
| Schedule of Investments [Line Items] | ||||
| Total investments | $ 1,555 | $ 627 | ||
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