v3.26.1
ALLOWANCE FOR CREDIT LOSSES - Narrative (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Dec. 31, 2025
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]            
ACL balance, end of period $ 3,381     $ 2,515    
ACL, period increase (decrease) 638          
Allowance for loan and lease losses 3,249 $ 3,243 $ 2,537 2,331 $ 2,263 $ 2,244
Commercial            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
ACL balance, end of period 2,441     1,672    
ACL, period increase (decrease) 565          
Allowance for loan and lease losses 2,339 2,305 1,731 1,548 1,520 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 940     843    
ACL, period increase (decrease) 73          
Allowance for loan and lease losses 910 $ 938 $ 806 $ 783 $ 743 $ 760
Consumer | Cadence            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Allowance for loan and lease losses $ 129