v3.26.3
ALLOWANCE FOR CREDIT LOSSES - Allowance Roll-forward (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
ALLL balance, beginning of period $ 3,249 $ 2,331 $ 2,537 $ 2,244
Loan and lease charge-offs (200) (137) (564) (381)
Recoveries of loans and leases previously charged-off 54 62 188 154
Provision for loan and lease losses 119 118 494 357
Allowance on PCD loans and leases at acquisition     322  
Allowance on purchased seasoned loans and leases at acquisition     245  
ALLL balance, end of period 3,222 2,374 3,222 2,374
AULC balance, beginning of period 132 184 206 202
Provision (benefit) for unfunded lending commitments 4 4 (81) (14)
Allowance for unfunded lending commitments at acquisition     11  
AULC balance, end of period 136 188 136 188
ACL balance, end of period 3,358 2,562 3,358 2,562
Commercial        
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
ALLL balance, beginning of period 2,339 1,548 1,731 1,484
Loan and lease charge-offs (114) (80) (328) (210)
Recoveries of loans and leases previously charged-off 33 44 125 99
Provision for loan and lease losses 99 56 391 195
Allowance on PCD loans and leases at acquisition     268  
Allowance on purchased seasoned loans and leases at acquisition     170  
ALLL balance, end of period 2,357 1,568 2,357 1,568
AULC balance, beginning of period 102 124 145 144
Provision (benefit) for unfunded lending commitments (3) 1 (49) (19)
Allowance for unfunded lending commitments at acquisition     3  
AULC balance, end of period 99 125 99 125
ACL balance, end of period 2,456 1,693 2,456 1,693
Commercial | Cadence        
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
Loan and lease charge-offs     (23)  
ALLL balance, end of period 438   438  
Consumer        
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
ALLL balance, beginning of period 910 783 806 760
Loan and lease charge-offs (86) (57) (236) (171)
Recoveries of loans and leases previously charged-off 21 18 63 55
Provision for loan and lease losses 20 62 103 162
Allowance on PCD loans and leases at acquisition     54  
Allowance on purchased seasoned loans and leases at acquisition     75  
ALLL balance, end of period 865 806 865 806
AULC balance, beginning of period 30 60 61 58
Provision (benefit) for unfunded lending commitments 7 3 (32) 5
Allowance for unfunded lending commitments at acquisition     8  
AULC balance, end of period 37 63 37 63
ACL balance, end of period 902 $ 869 902 $ 869
Consumer | Cadence        
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
ALLL balance, end of period $ 129   $ 129