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Loans And The Allowance For Credit Losses (Loans by Segment) (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | $ 95,733 | $ 96,727
Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 54,044 | 54,845
Investor Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 8,833 | 8,710
Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 32,856 | 33,172
Commercial And Industrial [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 48,879 | 49,671
Commercial Real Estate Mortgage - Owner-Occupied [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 4,849 | 4,841
Commercial Real Estate Construction - Owner-Occupied [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 316 | 333
Commercial Investor Real Estate Mortgage [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 6,376 | 6,567
Commercial Investor Real Estate Construction [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 2,457 | 2,143
Residential First Mortgage [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 20,000 | 20,094
Home Equity Lines of Credit[Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 3,130 | 3,150
Home Equity Loan [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 2,371 | 2,390
Consumer Credit Card Financing Receivable [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 1,384 | 1,445
Other Consumer [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | $ 5,971 | $ 6,093

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