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Allowance for Credit Losses (Collateral Dependent Loans and Leases) (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | $ 37,637,013 | $ 37,680,901
Commercial real estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 19,600,480 | 19,567,672
Commercial real estate | Non-owner occupied term |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 6,189,992 | 6,278,154
Commercial real estate | Owner occupied term |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 5,319,529 | 5,270,294
Commercial |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 9,944,830 | 9,968,096
Commercial | Term |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 5,352,598 | 5,537,618
Commercial | Lines of credit & other |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 2,950,782 | 2,769,643
Commercial | Leases & equipment finance |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 1,641,450 | 1,660,835
Residential |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 7,912,599 | 7,965,005
Residential | Mortgage |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 5,829,833 | 5,933,352
Residential | Home equity loans & lines |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 2,082,766 | 2,031,653
Residential Real Estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 70,570 | 84,104
Residential Real Estate | Commercial real estate | Non-owner occupied term |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 0 | 0
Residential Real Estate | Commercial real estate | Owner occupied term |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 0 | 0
Residential Real Estate | Commercial | Term |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 972 | 2,273
Residential Real Estate | Commercial | Lines of credit & other |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 0 | 0
Residential Real Estate | Commercial | Leases & equipment finance |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 0 | 0
Residential Real Estate | Residential | Mortgage |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 67,495 | 79,440
Residential Real Estate | Residential | Home equity loans & lines |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 2,103 | 2,391
Commercial Real Estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 27,904 | 37,671
Commercial Real Estate | Commercial real estate | Non-owner occupied term |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 14,507 | 13,116
Commercial Real Estate | Commercial real estate | Owner occupied term |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 9,347 | 20,198
Commercial Real Estate | Commercial | Term |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 1,341 | 2,856
Commercial Real Estate | Commercial | Lines of credit & other |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 2,709 | 1,501
Commercial Real Estate | Commercial | Leases & equipment finance |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 0 | 0
Commercial Real Estate | Residential | Mortgage |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 0 | 0
Commercial Real Estate | Residential | Home equity loans & lines |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 0 | 0
General Business Assets |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 53,297 | 40,442
General Business Assets | Commercial real estate | Non-owner occupied term |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 0 | 0
General Business Assets | Commercial real estate | Owner occupied term |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 0 | 0
General Business Assets | Commercial | Term |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 13,988 | 15,800
General Business Assets | Commercial | Lines of credit & other |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 19,861 | 3,645
General Business Assets | Commercial | Leases & equipment finance |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 19,448 | 20,997
General Business Assets | Residential | Mortgage |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 0 | 0
General Business Assets | Residential | Home equity loans & lines |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 0 | 0
Total |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 151,771 | 162,217
Total | Commercial real estate | Non-owner occupied term |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 14,507 | 13,116
Total | Commercial real estate | Owner occupied term |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 9,347 | 20,198
Total | Commercial | Term |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 16,301 | 20,929
Total | Commercial | Lines of credit & other |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 22,570 | 5,146
Total | Commercial | Leases & equipment finance |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 19,448 | 20,997
Total | Residential | Mortgage |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | 67,495 | 79,440
Total | Residential | Home equity loans & lines |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Loans and leases | $ 2,103 | $ 2,391

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