COMMITMENTS, CONTINGENCIES, AND GUARANTEES - Commitments to Extend Credit (Narrative) (Details) - USD ($) $ in Billions |
Sep. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Commitments to extend credit | ||
| Other Commitments [Line Items] | ||
| Commitments that can be canceled without notice | $ 5.7 | $ 3.7 |