Offsetting Arrangements - Narrative (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Offsetting [Abstract] | ||
| Fair value of securities received as collateral that can be resold or repledged | $ 20,100 | $ 19,210 |
| Fair value of securities received as collateral that have been resold or repledged | $ 7,500 | $ 12,110 |