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Loans and Leases and the Allowance for Credit Losses - Schedule of Loan and Lease Portfolio (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Accounts Notes And Loans Receivable [Line Items] |  |
Loans and Leases | $ 14,002,178 | $ 14,075,980
Commercial |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans and Leases | 6,104,126 | 6,125,409
Commercial | Commercial Mortgage |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans and Leases | 4,038,956 | 4,020,622
Commercial | Commercial and Industrial |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans and Leases | 1,597,560 | 1,705,133
Commercial | Construction |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans and Leases | 374,768 | 308,898
Commercial | Lease Financing |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans and Leases | 92,842 | 90,756
Consumer |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans and Leases | 7,898,052 | 7,950,571
Consumer | Residential Mortgage |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans and Leases | 4,637,014 | 4,628,283
Consumer | Home Equity |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans and Leases | 2,139,025 | 2,165,514
Consumer | Automobile |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans and Leases | 715,688 | 764,146
Consumer | Other |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Loans and Leases | $ 406,325 | $ 392,628

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