Quarterly report pursuant to Section 13 or 15(d)

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

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COMMITMENTS AND CONTINGENT LIABILITIES - Commitments to Extend Credit (Details) - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Commercial and industrial    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Contract amount represents credit risk $ 35,731 $ 32,344
Consumer loan portfolio    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Contract amount represents credit risk 19,983 19,270
Commercial real estate    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Contract amount represents credit risk 1,865 2,543
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 743 814
Commercial | Commercial letters of credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Contract amount represents credit risk $ 24 $ 9