v3.25.4
Loans And The Allowance For Credit Losses(Aging and Non-Accrual Performance for Modifications to Troubled Borrowers (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period $ 494 $ 411
Commercial    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 164 53
Investor Real Estate    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 100 172
Consumer    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 230 186
Current    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 311 233
Current | Commercial    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 87 36
Current | Investor Real Estate    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 74 66
Current | Consumer    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 150 131
Financial Asset, 30 to 89 Days Past Due    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 42 32
Financial Asset, 30 to 89 Days Past Due | Commercial    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 1 0
Financial Asset, 30 to 89 Days Past Due | Investor Real Estate    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 0 0
Financial Asset, 30 to 89 Days Past Due | Consumer    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 41 32
Financial Asset, Equal to or Greater than 90 Days Past Due    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 29 13
Financial Asset, Equal to or Greater than 90 Days Past Due | Commercial    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 0 0
Financial Asset, Equal to or Greater than 90 Days Past Due | Investor Real Estate    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 0 0
Financial Asset, Equal to or Greater than 90 Days Past Due | Consumer    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 29 13
Non-performing [Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 112 133
Non-performing [Member] | Commercial    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 76 17
Non-performing [Member] | Investor Real Estate    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 26 106
Non-performing [Member] | Consumer    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 10 10
Commercial And Industrial [Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 162 50
Commercial And Industrial [Member] | Current    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 85 34
Commercial And Industrial [Member] | Financial Asset, 30 to 89 Days Past Due    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 1 0
Commercial And Industrial [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 0 0
Commercial And Industrial [Member] | Non-performing [Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 76 16
Commercial Real Estate Mortgage - Owner-Occupied [Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 2 3
Commercial Real Estate Mortgage - Owner-Occupied [Member] | Current    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 2 2
Commercial Real Estate Mortgage - Owner-Occupied [Member] | Financial Asset, 30 to 89 Days Past Due    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 0 0
Commercial Real Estate Mortgage - Owner-Occupied [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 0 0
Commercial Real Estate Mortgage - Owner-Occupied [Member] | Non-performing [Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 0 1
Commercial investor real estate mortgage [Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 100 172
Commercial investor real estate mortgage [Member] | Current    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 74 66
Commercial investor real estate mortgage [Member] | Financial Asset, 30 to 89 Days Past Due    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 0 0
Commercial investor real estate mortgage [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 0 0
Commercial investor real estate mortgage [Member] | Non-performing [Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 26 106
Residential First Mortgage [Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 214 164
Residential First Mortgage [Member] | Current    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 137 113
Residential First Mortgage [Member] | Financial Asset, 30 to 89 Days Past Due    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 41 31
Residential First Mortgage [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 29 13
Residential First Mortgage [Member] | Non-performing [Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 7 7
Home Equity Lines of Credit[Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 6 10
Home Equity Lines of Credit[Member] | Current    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 5 9
Home Equity Lines of Credit[Member] | Financial Asset, 30 to 89 Days Past Due    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 0 0
Home Equity Lines of Credit[Member] | Financial Asset, Equal to or Greater than 90 Days Past Due    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 0 0
Home Equity Lines of Credit[Member] | Non-performing [Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 1 1
Home Equity Loan [Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 10 12
Home Equity Loan [Member] | Current    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 8 9
Home Equity Loan [Member] | Financial Asset, 30 to 89 Days Past Due    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 0 1
Home Equity Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 0 0
Home Equity Loan [Member] | Non-performing [Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period $ 2 $ 2