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Loans and Allowance for Credit Losses - Schedule of Past Due Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
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Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | $ 48,764,162 | $ 36,285,887
Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 48,764,162 | 36,285,887
Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 14,983,861 | 10,288,560
Commercial | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 14,763,451 | 10,056,259
Commercial real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 22,050,007 | 16,307,486
Commercial real estate | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 21,874,337 | 16,133,048
BBCC | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 396,080 | 406,739
Residential real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 8,467,496 | 6,797,586
Residential real estate | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 8,467,496 | 6,797,586
Indirect |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 1,075,235 | 1,096,778
Indirect | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 1,075,235 | 1,096,778
Direct |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 649,297 | 514,144
Direct | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 649,297 | 514,144
Home equity |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 1,538,266 | 1,281,333
Home equity | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 1,538,266 | 1,281,333
Total Past Due | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 393,022 | 283,006
Total Past Due | Commercial | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 99,678 | 65,248
Total Past Due | Commercial real estate | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 151,802 | 92,113
Total Past Due | BBCC | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 3,119 | 3,518
Total Past Due | Residential real estate | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 99,979 | 88,114
Total Past Due | Indirect | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 12,984 | 13,838
Total Past Due | Direct | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 7,011 | 4,444
Total Past Due | Home equity | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 18,449 | 15,731
30-59 Days Past Due | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 111,360 | 92,237
30-59 Days Past Due | Commercial | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 23,702 | 5,970
30-59 Days Past Due | Commercial real estate | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 20,870 | 19,240
30-59 Days Past Due | BBCC | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 1,297 | 1,227
30-59 Days Past Due | Residential real estate | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 45,817 | 49,331
30-59 Days Past Due | Indirect | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 8,844 | 9,700
30-59 Days Past Due | Direct | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 3,644 | 2,004
30-59 Days Past Due | Home equity | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 7,186 | 4,765
60-89 Days Past Due | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 37,184 | 44,739
60-89 Days Past Due | Commercial | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 7,200 | 12,021
60-89 Days Past Due | Commercial real estate | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 8,151 | 12,728
60-89 Days Past Due | BBCC | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 1,359 | 861
60-89 Days Past Due | Residential real estate | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 13,650 | 12,085
60-89 Days Past Due | Indirect | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 2,263 | 2,675
60-89 Days Past Due | Direct | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 1,605 | 970
60-89 Days Past Due | Home equity | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 2,956 | 3,399
Past Due 90 Days or More | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 244,478 | 146,030
Past Due 90 Days or More | Commercial | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 68,776 | 47,257
Past Due 90 Days or More | Commercial real estate | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 122,781 | 60,145
Past Due 90 Days or More | BBCC | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 463 | 1,430
Past Due 90 Days or More | Residential real estate | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 40,512 | 26,698
Past Due 90 Days or More | Indirect | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 1,877 | 1,463
Past Due 90 Days or More | Direct | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 1,762 | 1,470
Past Due 90 Days or More | Home equity | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 8,307 | 7,567
Current | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 48,371,140 | 36,002,881
Current | Commercial | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 14,663,773 | 9,991,011
Current | Commercial real estate | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 21,722,535 | 16,040,935
Current | BBCC | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 392,961 | 403,221
Current | Residential real estate | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 8,367,517 | 6,709,472
Current | Indirect | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 1,062,251 | 1,082,940
Current | Direct | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 642,286 | 509,700
Current | Home equity | Portfolio Segment After Reclassifications |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | $ 1,519,817 | $ 1,265,602

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