Commitments and Guarantees - Contractual Amounts of Credit-Related Off-Balance Sheet Financial Instruments (Details) - USD ($) $ in Millions |
Jun. 30, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Commitments and Contingencies Disclosure [Abstract] | ||
| Unfunded credit facilities | $ 35,127 | $ 34,191 |
| Indemnified securities financing | 366,337 | 310,814 |
| Standby letters of credit | $ 780 | $ 908 |