v3.26.3
ALLOWANCE FOR CREDIT LOSSES - Narrative (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2026
Jun. 30, 2026
Dec. 31, 2025
Sep. 30, 2025
Jun. 30, 2025
Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]            
ACL balance, end of period $ 3,358     $ 2,562    
ACL, period increase (decrease) 615          
Allowance for loan and lease losses 3,222 $ 3,249 $ 2,537 2,374 $ 2,331 $ 2,244
Commercial            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
ACL balance, end of period 2,456     1,693    
ACL, period increase (decrease) 580          
Allowance for loan and lease losses 2,357 2,339 1,731 1,568 1,548 1,484
Commercial | Cadence            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Allowance for loan and lease losses 438          
Consumer            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
ACL balance, end of period 902     869    
ACL, period increase (decrease) 35          
Allowance for loan and lease losses 865 $ 910 $ 806 $ 806 $ 783 $ 760
Consumer | Cadence            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Allowance for loan and lease losses $ 129