Quarterly report [Sections 13 or 15(d)]

COMMITMENTS AND CONTINGENT LIABILITIES - Commitments to Extend Credit (Details)

v3.25.1
COMMITMENTS AND CONTINGENT LIABILITIES - Commitments to Extend Credit (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Commercial and industrial    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Contract amount represents credit risk $ 39,113 $ 37,422
Consumer loan portfolio    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Contract amount represents credit risk 20,493 19,993
Commercial real estate    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Contract amount represents credit risk 2,145 2,089
Standby letters of credit and guarantees on industrial revenue bonds    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Contract amount represents credit risk 760 725
Commercial | Commercial letters of credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Contract amount represents credit risk $ 10 $ 17