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Credit Quality And Allowance For Credit Losses (Financial Effect of Loan Modifications) (Details) | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Weighted-Average Term Extension (in months) |  | 1 year 6 months 4 days | 11 months 5 days
Weighted-Average Interest Rate Reduction |  | (3.24%) | 1.40%
Business loans: |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Weighted-Average Term Extension (in months) |  | 1 year 6 months 4 days | 9 months 29 days
Weighted-Average Interest Rate Reduction |  | 0.00% | 1.11%
Business loans: | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Weighted-Average Term Extension (in months) |  | 1 year 4 months 2 days | 9 months 26 days
Weighted-Average Interest Rate Reduction |  | 0.00% | 1.11%
Retail loans: | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Weighted-Average Term Extension (in months) |  |  | 9 years 9 months 15 days
Weighted-Average Interest Rate Reduction |  | 3.24% | 3.11%
Commercial mortgage: | Business loans: | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Weighted-Average Term Extension (in months) |  | 1 year 8 months 5 days | 1 year 11 days
Weighted-Average Interest Rate Reduction |  | 0.00% | 0.00%
Commercial mortgage: | Business loans: | Commercial | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Weighted-Average Interest Rate Reduction |  | 0.00% |
Commercial mortgage: | Business loans: | Commercial | Other business lines |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Weighted-Average Term Extension (in months) | [1] | 1 year 5 months 12 days | 1 year 11 days
Weighted-Average Interest Rate Reduction | [1] | 0.00% | 0.00%
Home equity | Retail loans: | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Weighted-Average Term Extension (in months) |  |  | 9 years 9 months 15 days
Weighted-Average Interest Rate Reduction |  | (3.24%) | (3.11%)
Consumer Loan | Retail loans: | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Weighted-Average Term Extension (in months) |  |  | 9 years 9 months 15 days
Weighted-Average Interest Rate Reduction |  | 3.24% | 3.11%
[1] | Primarily loans secured by owner-occupied real estate.

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