v3.26.1
Allowance for Credit Losses - Schedule of Rollforward of Allowance for Credit Losses (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Allowance for loan and lease losses:        
Beginning balance $ 730 $ 822 $ 738 $ 815
Charge-offs (41) (43) (86) (84)
Recoveries 8 9 25 21
Provision (benefit) for loan and lease losses 12 26 32 62
Ending balance 709 814 709 814
Reserve for remaining unfunded commitments:        
Beginning balance 96 83 101 79
Provision (benefit) for remaining unfunded commitments 3 4 (2) 8
Ending balance 99 87 99 87
Allowance for credit losses 808 901 808 901
Commercial | Commercial, Financial, and Industrial        
Allowance for loan and lease losses:        
Beginning balance 353 345 335 345
Charge-offs (32) (28) (68) (62)
Recoveries 5 6 19 12
Provision (benefit) for loan and lease losses 24 24 64 52
Ending balance 350 347 350 347
Reserve for remaining unfunded commitments:        
Beginning balance 80 63 81 57
Provision (benefit) for remaining unfunded commitments 4 5 3 11
Ending balance 84 68 84 68
Allowance for credit losses 434 415 434 415
Commercial | Commercial Real Estate        
Allowance for loan and lease losses:        
Beginning balance 156 225 177 227
Charge-offs (3) (7) (7) (10)
Recoveries 0 0 0 3
Provision (benefit) for loan and lease losses (3) (5) (20) (7)
Ending balance 150 213 150 213
Reserve for remaining unfunded commitments:        
Beginning balance 7 9 11 11
Provision (benefit) for remaining unfunded commitments 0 1 (4) (1)
Ending balance 7 10 7 10
Allowance for credit losses 157 223 157 223
Consumer | Consumer Real Estate        
Allowance for loan and lease losses:        
Beginning balance 201 230 206 221
Charge-offs (1) (2) (2) (2)
Recoveries 2 1 4 3
Provision (benefit) for loan and lease losses (12) 4 (18) 11
Ending balance 190 233 190 233
Reserve for remaining unfunded commitments:        
Beginning balance 9 11 9 11
Provision (benefit) for remaining unfunded commitments (1) (2) (1) (2)
Ending balance 8 9 8 9
Allowance for credit losses 198 242 198 242
Consumer | Credit Card and Other        
Allowance for loan and lease losses:        
Beginning balance 20 22 20 22
Charge-offs (5) (6) (9) (10)
Recoveries 1 2 2 3
Provision (benefit) for loan and lease losses 3 3 6 6
Ending balance 19 21 19 21
Reserve for remaining unfunded commitments:        
Beginning balance 0 0 0 0
Provision (benefit) for remaining unfunded commitments 0 0 0 0
Ending balance 0 0 0 0
Allowance for credit losses $ 19 $ 21 $ 19 $ 21