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Credit Quality And Allowance For Credit Losses (Financial Effect of Loan Modifications) (Details) | 3 Months Ended | 6 Months Ended
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Jun. 30, 2023 | Jun. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Weighted-Average Term Extension (in months) | 11 months 15 days | 1 year 1 month 24 days
Weighted-Average Interest Rate Reduction | (1.92%) | (0.67%)
Business loans: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Weighted-Average Term Extension (in months) | 11 months 15 days | 1 year 1 month 24 days
Weighted-Average Interest Rate Reduction | (1.92%) | (0.67%)
Business loans: | Commercial |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Weighted-Average Term Extension (in months) | 6 months 18 days | 9 months 6 days
Weighted-Average Interest Rate Reduction | 0.00% | (0.44%)
Commercial mortgage: | Business loans: | Commercial |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Weighted-Average Term Extension (in months) | 5 years 3 days | 2 years 5 months 15 days
Weighted-Average Interest Rate Reduction | (1.92%) | (0.71%)
Commercial mortgage: | Business loans: | Commercial | Commercial |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Weighted-Average Term Extension (in months) |  | 6 months
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) | 5 years 3 days | 2 years 7 months 27 days
Weighted-Average Interest Rate Reduction | (1.92%) | (0.71%)

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