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Loans and Leases - Modifications to Borrowers Experiencing Financial Difficulty (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Interest Rate Reduction |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Balance | $ 0.0 | $ 0.0
% of Total Class | 0.00% | 0.00%
Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Balance | $ 83.0 | $ 96.0
% of Total Class | 0.10% | 0.20%
Principal Forgiveness |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Balance | $ 0.0 | $ 0.0
% of Total Class | 0.00% | 0.00%
Payment Deferrals |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Balance | $ 0.0 | $ 4.0
% of Total Class | 0.00% | 0.00%
Combination - Term Extension and Interest Rate Reduction |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Balance | $ 1.0 | $ 2.0
% of Total Class | 0.00% | 0.00%
Combination - Principal Forgiveness and Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Balance | $ 0.0 | $ 18.0
% of Total Class | 0.00% | 0.00%
Commercial: | Commercial and industrial | Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Balance | $ 64.0 | $ 63.0
% of Total Class | 0.20% | 0.20%
Weighted average life of loans | 1 year 4 months 24 days | 1 year
Commercial: | Commercial and industrial | Combination - Principal Forgiveness and Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Balance | $ 0.0 | $ 18.0
% of Total Class | 0.00% | 0.10%
Weighted average life of loans |  | 6 years 2 months 12 days
Decrease from loan modification |  | $ 2.0
Commercial: | Commercial real estate | Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Balance | $ 19.0 | $ 32.0
% of Total Class | 0.10% | 0.20%
Weighted average life of loans | 9 months 18 days | 7 months 6 days
Consumer: | Consumer Real Estate | Interest Rate Reduction |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Balance | $ 0.0 | $ 0.0
% of Total Class | 0.00% | 0.00%
Consumer: | Consumer Real Estate | Interest Rate Reduction | Maximum |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Weighted average interest rate of loans | 9.95% |
Consumer: | Consumer Real Estate | Interest Rate Reduction | Minimum |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Weighted average interest rate of loans | 6.75% |
Consumer: | Consumer Real Estate | Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Balance | $ 0.0 | $ 1.0
% of Total Class | 0.00% | 0.00%
Weighted average life of loans |  | 14 years 10 months 24 days
Consumer: | Consumer Real Estate | Principal Forgiveness |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Balance | $ 0.0 | $ 0.0
% of Total Class | 0.00% | 0.00%
Decrease from loan modification | $ 1.0 |
Consumer: | Consumer Real Estate | Payment Deferrals |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Balance | $ 0.0 | $ 4.0
% of Total Class | 0.00% | 0.00%
Weighted average life of loans |  | 11 months
Consumer: | Consumer Real Estate | Combination - Term Extension and Interest Rate Reduction |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Balance | $ 1.0 | $ 2.0
% of Total Class | 0.00% | 0.00%
Weighted average life of loans | 18 years 9 months 18 days | 8 years 9 months 18 days
Consumer: | Consumer Real Estate | Combination - Term Extension and Interest Rate Reduction | Maximum |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Weighted average interest rate of loans | 6.43% | 5.00%
Consumer: | Consumer Real Estate | Combination - Term Extension and Interest Rate Reduction | Minimum |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Weighted average interest rate of loans | 3.69% | 4.90%
Consumer: | Credit Card and Other | Interest Rate Reduction |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Balance | $ 0.0 | $ 0.0
% of Total Class | 0.00% | 0.00%
Consumer: | Credit Card and Other | Interest Rate Reduction | Maximum |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Weighted average interest rate of loans | 20.50% |
Consumer: | Credit Card and Other | Interest Rate Reduction | Minimum |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Weighted average interest rate of loans | 0.00% |

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