Parent Company - Group Statement of Balance Sheets (Parenthetical) (Detail) - USD ($) $ in Millions |
Dec. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Condensed Balance Sheet Statements, Captions [Line Items] | ||
| Investment at fair value | $ 83,427 | $ 82,778 |
| Group Inc. [Member] | ||
| Condensed Balance Sheet Statements, Captions [Line Items] | ||
| Loans to and receivables from Nonbank subsidiaries, at fair value | 7,638 | 7,242 |
| Unsecured short-term borrowings, including the current portion of unsecured long-term borrowings, at fair value | 1,215 | 1,723 |
| Unsecured long-term borrowings at fair value | 17,690 | 11,145 |
| Investment at fair value | 22,525 | 16,642 |
| Derivative contracts with subsidiaries included in Trading Assets | 1,380 | 843 |
| Derivative contracts with subsidiaries included in Trading Liabilities | 1,120 | $ 320 |
| 2023 | 38,850 | |
| 2024 | 324 | |
| 2025 | 385 | |
| 2026 | 45 | |
| 2027-thereafter | $ 798 |