Commitments and Guarantees - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |
|---|---|---|---|
Mar. 31, 2025 |
Sep. 30, 2025 |
Dec. 31, 2024 |
|
| Commitments and Contingencies Disclosure [Abstract] | |||
| Unfunded commitments to extend credit, short term | 70.00% | 75.00% | |
| Term of unfunded commitment | 1 year | 1 year | |
| Cash collateral provided for securities lending | $ 42,060 | $ 37,450 | |
| Cash collateral received in connection to securities finance activities | $ 16,380 | $ 14,330 |