v3.26.3
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