v3.26.3
Allowance for Credit Losses (Allowance for Credit Losses Methodology) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Allowance for credit losses on loans and leases            
Balance, beginning of period $ 458 $ 473 $ 421 $ 466 $ 425 $ 425
Initial ACL on PCD loans acquired during the period     5 5    
Provision (recapture) for credit losses on loans and leases 32   69 89 124  
Charge-offs (36)   (27) (111) (96)  
Recoveries 8   5 18 15  
Net charge-offs (28)   (22) (93) (81)  
Balance, end of period 462 466 473 462 473 466
Reserve for unfunded commitments            
Balance, beginning of period 17 19 18 19 16 16
Provision (recapture) for credit losses on unfunded commitments 1   1 (1) 3  
Balance, end of period 18 19 19 18 19 19
Total allowance for credit losses 480 485 492 480 492 485
Commercial real estate            
Allowance for credit losses on loans and leases            
Balance, beginning of period 217 205 160 198 154 154
Initial ACL on PCD loans acquired during the period     4 4    
Provision (recapture) for credit losses on loans and leases 2   44 22 50  
Charge-offs 0   (3) (1) (3)  
Recoveries 1   0 1 0  
Net charge-offs 1   (3) 0 (3)  
Balance, end of period 220 198 205 220 205 198
Reserve for unfunded commitments            
Balance, beginning of period 9 10 8 10 6 6
Provision (recapture) for credit losses on unfunded commitments 1   2 0 4  
Balance, end of period 10 10 10 10 10 10
Total allowance for credit losses 230   215 230 215  
Commercial            
Allowance for credit losses on loans and leases            
Balance, beginning of period 214 225 220 226 219 219
Initial ACL on PCD loans acquired during the period     1 1    
Provision (recapture) for credit losses on loans and leases 28   22 79 80  
Charge-offs (33)   (22) (104) (88)  
Recoveries 7   4 15 13  
Net charge-offs (26)   (18) (89) (75)  
Balance, end of period 216 226 225 216 225 226
Reserve for unfunded commitments            
Balance, beginning of period 6 7 8 7 7 7
Provision (recapture) for credit losses on unfunded commitments 0   (1) (1) 0  
Balance, end of period 6 7 7 6 7 7
Total allowance for credit losses 222   232 222 232  
Residential            
Allowance for credit losses on loans and leases            
Balance, beginning of period 21 36 34 34 45 45
Initial ACL on PCD loans acquired during the period     0 0    
Provision (recapture) for credit losses on loans and leases (1)   2 (14) (8)  
Charge-offs 0   0 0 (1)  
Recoveries 0   0 0 0  
Net charge-offs 0   0 0 (1)  
Balance, end of period 20 34 36 20 36 34
Reserve for unfunded commitments            
Balance, beginning of period 1 1 1 1 2 2
Provision (recapture) for credit losses on unfunded commitments 0   0 0 (1)  
Balance, end of period 1 1 1 1 1 1
Total allowance for credit losses 21   37 21 37  
Consumer & other            
Allowance for credit losses on loans and leases            
Balance, beginning of period 6 7 7 8 7 7
Initial ACL on PCD loans acquired during the period     0 0    
Provision (recapture) for credit losses on loans and leases 3   1 2 2  
Charge-offs (3)   (2) (6) (4) (5)
Recoveries 0   1 2 2  
Net charge-offs (3)   (1) (4) (2)  
Balance, end of period 6 8 7 6 7 8
Reserve for unfunded commitments            
Balance, beginning of period 1 1 1 1 1 1
Provision (recapture) for credit losses on unfunded commitments 0   0 0 0  
Balance, end of period 1 $ 1 1 1 1 $ 1
Total allowance for credit losses $ 7   $ 8 $ 7 $ 8