v3.26.1
Loans And The Allowance For Credit Losses(Aging and Non-Accrual Performance for Modifications to Troubled Borrowers (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Jun. 30, 2025
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period $ 367 $ 553
Commercial    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 146 127
Investor Real Estate    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 27 200
Consumer    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 194 226
Current    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 219 364
Current | Commercial    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 54 81
Current | Investor Real Estate    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 27 111
Current | Consumer    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 138 172
Financial Asset, 30 to 89 Days Past Due    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 28 33
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 27 33
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 20 11
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 20 11
Non-performing [Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 100 145
Non-performing [Member] | Commercial    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 91 46
Non-performing [Member] | Investor Real Estate    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 0 89
Non-performing [Member] | Consumer    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 9 10
Commercial And Industrial [Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 118 124
Commercial And Industrial [Member] | Current    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 31 79
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 86 45
Commercial Real Estate Mortgage - Owner-Occupied [Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 28 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 23 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 5 1
Commercial investor real estate mortgage [Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 27 200
Commercial investor real estate mortgage [Member] | Current    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 27 111
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 0 89
Residential First Mortgage [Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 179 204
Residential First Mortgage [Member] | Current    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 127 155
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 26 32
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 20 11
Residential First Mortgage [Member] | Non-performing [Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 6 6
Home Equity Lines of Credit[Member]    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 6 11
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 1
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 9 11
Home Equity Loan [Member] | Current    
Financing Receivable, Modifications [Line Items]    
Modifications to Troubled Borrowers, modified in the previous 12-month period 6 8
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 1 0
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 $ 3