v3.26.3
Allowance for Credit Losses (Non-Accrual Loans and Leases and Loans and Leases Past Due) (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Financing Receivable, Past Due [Line Items]    
Loans and leases $ 46,915 $ 47,776
Non-Accrual 157 116
Loans Insured or Guaranteed by US Government Authorities [Member]    
Financing Receivable, Past Due [Line Items]    
Non-Accrual 32 38
Greater than 30 to 59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans and leases 54 39
60 to 89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans and leases 41 55
90 Days or More and Accruing (2)    
Financing Receivable, Past Due [Line Items]    
Loans and leases 97 85
90 Days or More and Accruing (2) | Loans Insured or Guaranteed by US Government Authorities [Member]    
Financing Receivable, Past Due [Line Items]    
Loans and leases 39 41
Total Past Due    
Financing Receivable, Past Due [Line Items]    
Loans and leases 192 179
Current and Other    
Financing Receivable, Past Due [Line Items]    
Loans and leases 46,566 47,481
Commercial real estate    
Financing Receivable, Past Due [Line Items]    
Loans and leases 26,497 27,870
Commercial real estate | Non-owner occupied term    
Financing Receivable, Past Due [Line Items]    
Loans and leases 7,338 8,206
Non-Accrual 28 29
Commercial real estate | Owner occupied term    
Financing Receivable, Past Due [Line Items]    
Loans and leases 7,219 7,314
Non-Accrual 56 21
Commercial real estate | Multifamily    
Financing Receivable, Past Due [Line Items]    
Loans and leases 9,937 10,281
Non-Accrual 0 0
Commercial real estate | Construction & development    
Financing Receivable, Past Due [Line Items]    
Loans and leases 1,642 1,707
Non-Accrual 0 0
Commercial real estate | Residential development    
Financing Receivable, Past Due [Line Items]    
Loans and leases 361 362
Non-Accrual 0 0
Commercial real estate | Greater than 30 to 59 Days Past Due | Non-owner occupied term    
Financing Receivable, Past Due [Line Items]    
Loans and leases 8 2
Commercial real estate | Greater than 30 to 59 Days Past Due | Owner occupied term    
Financing Receivable, Past Due [Line Items]    
Loans and leases 10 6
Commercial real estate | Greater than 30 to 59 Days Past Due | Multifamily    
Financing Receivable, Past Due [Line Items]    
Loans and leases 2 0
Commercial real estate | Greater than 30 to 59 Days Past Due | Construction & development    
Financing Receivable, Past Due [Line Items]    
Loans and leases 0 0
Commercial real estate | Greater than 30 to 59 Days Past Due | Residential development    
Financing Receivable, Past Due [Line Items]    
Loans and leases 0 0
Commercial real estate | 60 to 89 Days Past Due | Non-owner occupied term    
Financing Receivable, Past Due [Line Items]    
Loans and leases 0 0
Commercial real estate | 60 to 89 Days Past Due | Owner occupied term    
Financing Receivable, Past Due [Line Items]    
Loans and leases 1 5
Commercial real estate | 60 to 89 Days Past Due | Multifamily    
Financing Receivable, Past Due [Line Items]    
Loans and leases 4 1
Commercial real estate | 60 to 89 Days Past Due | Construction & development    
Financing Receivable, Past Due [Line Items]    
Loans and leases 0 0
Commercial real estate | 60 to 89 Days Past Due | Residential development    
Financing Receivable, Past Due [Line Items]    
Loans and leases 0 0
Commercial real estate | 90 Days or More and Accruing (2) | Non-owner occupied term    
Financing Receivable, Past Due [Line Items]    
Loans and leases 0 0
Commercial real estate | 90 Days or More and Accruing (2) | Owner occupied term    
Financing Receivable, Past Due [Line Items]    
Loans and leases 1 1
Commercial real estate | 90 Days or More and Accruing (2) | Multifamily    
Financing Receivable, Past Due [Line Items]    
Loans and leases 0 1
Commercial real estate | 90 Days or More and Accruing (2) | Construction & development    
Financing Receivable, Past Due [Line Items]    
Loans and leases 0 0
Commercial real estate | 90 Days or More and Accruing (2) | Residential development    
Financing Receivable, Past Due [Line Items]    
Loans and leases 0 0
Commercial real estate | Total Past Due | Non-owner occupied term    
Financing Receivable, Past Due [Line Items]    
Loans and leases 8 2
Commercial real estate | Total Past Due | Owner occupied term    
Financing Receivable, Past Due [Line Items]    
Loans and leases 12 12
Commercial real estate | Total Past Due | Multifamily    
Financing Receivable, Past Due [Line Items]    
Loans and leases 6 2
Commercial real estate | Total Past Due | Construction & development    
Financing Receivable, Past Due [Line Items]    
Loans and leases 0 0
Commercial real estate | Total Past Due | Residential development    
Financing Receivable, Past Due [Line Items]    
Loans and leases 0 0
Commercial real estate | Current and Other | Non-owner occupied term    
Financing Receivable, Past Due [Line Items]    
Loans and leases 7,302 8,175
Commercial real estate | Current and Other | Owner occupied term    
Financing Receivable, Past Due [Line Items]    
Loans and leases 7,151 7,281
Commercial real estate | Current and Other | Multifamily    
Financing Receivable, Past Due [Line Items]    
Loans and leases 9,931 10,279
Commercial real estate | Current and Other | Construction & development    
Financing Receivable, Past Due [Line Items]    
Loans and leases 1,642 1,707
Commercial real estate | Current and Other | Residential development    
Financing Receivable, Past Due [Line Items]    
Loans and leases 361 362
Commercial    
Financing Receivable, Past Due [Line Items]    
Loans and leases 12,770 11,955
Commercial | Term    
Financing Receivable, Past Due [Line Items]    
Loans and leases 7,097 6,713
Non-Accrual 25 25
Commercial | Lines of credit & other    
Financing Receivable, Past Due [Line Items]    
Loans and leases 4,055 3,643
Non-Accrual 30 22
Commercial | Leases & equipment finance    
Financing Receivable, Past Due [Line Items]    
Loans and leases 1,618 1,599
Non-Accrual 18 19
Commercial | Greater than 30 to 59 Days Past Due | Term    
Financing Receivable, Past Due [Line Items]    
Loans and leases 2 2
Commercial | Greater than 30 to 59 Days Past Due | Lines of credit & other    
Financing Receivable, Past Due [Line Items]    
Loans and leases 8 4
Commercial | Greater than 30 to 59 Days Past Due | Leases & equipment finance    
Financing Receivable, Past Due [Line Items]    
Loans and leases 14 17
Commercial | 60 to 89 Days Past Due | Term    
Financing Receivable, Past Due [Line Items]    
Loans and leases 2 7
Commercial | 60 to 89 Days Past Due | Lines of credit & other    
Financing Receivable, Past Due [Line Items]    
Loans and leases 2 3
Commercial | 60 to 89 Days Past Due | Leases & equipment finance    
Financing Receivable, Past Due [Line Items]    
Loans and leases 15 18
Commercial | 90 Days or More and Accruing (2) | Term    
Financing Receivable, Past Due [Line Items]    
Loans and leases 0 2
Commercial | 90 Days or More and Accruing (2) | Lines of credit & other    
Financing Receivable, Past Due [Line Items]    
Loans and leases 13 1
Commercial | 90 Days or More and Accruing (2) | Leases & equipment finance    
Financing Receivable, Past Due [Line Items]    
Loans and leases 3 5
Commercial | Total Past Due | Term    
Financing Receivable, Past Due [Line Items]    
Loans and leases 4 11
Commercial | Total Past Due | Lines of credit & other    
Financing Receivable, Past Due [Line Items]    
Loans and leases 23 8
Commercial | Total Past Due | Leases & equipment finance    
Financing Receivable, Past Due [Line Items]    
Loans and leases 32 40
Commercial | Current and Other | Term    
Financing Receivable, Past Due [Line Items]    
Loans and leases 7,068 6,677
Commercial | Current and Other | Lines of credit & other    
Financing Receivable, Past Due [Line Items]    
Loans and leases 4,002 3,613
Commercial | Current and Other | Leases & equipment finance    
Financing Receivable, Past Due [Line Items]    
Loans and leases 1,568 1,540
Residential    
Financing Receivable, Past Due [Line Items]    
Loans and leases 7,492 7,773
Residential | Mortgage    
Financing Receivable, Past Due [Line Items]    
Loans and leases 5,313 5,624
Non-Accrual 0 0
Residential | Home equity loans & lines    
Financing Receivable, Past Due [Line Items]    
Loans and leases 2,179 2,149
Non-Accrual 0 0
Residential | Greater than 30 to 59 Days Past Due | Mortgage    
Financing Receivable, Past Due [Line Items]    
Loans and leases 0 0
Residential | Greater than 30 to 59 Days Past Due | Home equity loans & lines    
Financing Receivable, Past Due [Line Items]    
Loans and leases 9 8
Residential | 60 to 89 Days Past Due | Mortgage    
Financing Receivable, Past Due [Line Items]    
Loans and leases 14 16
Residential | 60 to 89 Days Past Due | Home equity loans & lines    
Financing Receivable, Past Due [Line Items]    
Loans and leases 3 5
Residential | 90 Days or More and Accruing (2) | Mortgage    
Financing Receivable, Past Due [Line Items]    
Loans and leases 72 66
Residential | 90 Days or More and Accruing (2) | Mortgage | GNMA Loans    
Financing Receivable, Past Due [Line Items]    
GNMA Loans past due by 90 days, but not yet repurchased 4 3
Residential | 90 Days or More and Accruing (2) | Home equity loans & lines    
Financing Receivable, Past Due [Line Items]    
Loans and leases 8 9
Residential | Total Past Due | Mortgage    
Financing Receivable, Past Due [Line Items]    
Loans and leases 86 82
Residential | Total Past Due | Home equity loans & lines    
Financing Receivable, Past Due [Line Items]    
Loans and leases 20 22
Residential | Current and Other | Mortgage    
Financing Receivable, Past Due [Line Items]    
Loans and leases 5,227 5,542
Residential | Current and Other | Home equity loans & lines    
Financing Receivable, Past Due [Line Items]    
Loans and leases 2,159 2,127
Consumer & other    
Financing Receivable, Past Due [Line Items]    
Loans and leases 156 178
Non-Accrual 0 0
Consumer & other | Greater than 30 to 59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans and leases 1 0
Consumer & other | 60 to 89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans and leases 0 0
Consumer & other | 90 Days or More and Accruing (2)    
Financing Receivable, Past Due [Line Items]    
Loans and leases 0 0
Consumer & other | Total Past Due    
Financing Receivable, Past Due [Line Items]    
Loans and leases 1 0
Consumer & other | Current and Other    
Financing Receivable, Past Due [Line Items]    
Loans and leases $ 155 $ 178