Pledged Assets and Collateral, Collateral Accepted (Details) - USD ($) $ in Billions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Financial Instruments Pledged as Collateral [Abstract] | ||
| Fair value of securities received as collateral that can be resold or repledged | $ 469.2 | $ 288.7 |
| Fair value of securities received as collateral that have been resold or repledged | $ 309.3 | $ 142.2 |