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Loans, Loans by Past Due Status (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 29,768,586 | $ 29,216,218
Financing Receivable, Nonaccrual | 123,260 | 148,997
Nonaccrual Loans, Current Portion | $ 52,000 | $ 80,000
Percent of current nonaccrual loans | 42.00% | 53.00%
Financing Receivable, Nonaccrual, Interest Income | $ 0 | $ 0
Financing Receivable, Nonaccrual, No Allowance | 24,000 | 23,000
Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 29,565,335 | 28,983,708
Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 40,961 | 38,113
Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 35,841 | 23,712
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 3,189 | 21,689
Commercial and Industrial Sector [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 10,573,741 | 9,731,555
Financing Receivable, Nonaccrual | 19,084 | 62,022
Commercial and Industrial Sector [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 10,552,756 | 9,663,587
Commercial and Industrial Sector [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 899 | 5,374
Commercial and Industrial Sector [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 361 | 191
Commercial and Industrial Sector [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 642 | 380
Commercial Real Estate Owner Occupied Portfolio [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 1,143,741 | 1,061,700
Financing Receivable, Nonaccrual | 1,501 | 1,394
Commercial Real Estate Owner Occupied Portfolio [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 1,140,607 | 1,059,948
Commercial Real Estate Owner Occupied Portfolio [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 1,533 | 0
Commercial Real Estate Owner Occupied Portfolio [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 101 | 358
Commercial Real Estate Owner Occupied Portfolio [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 0 | 0
Commercial And Business Lending [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 11,717,483 | 10,793,255
Financing Receivable, Nonaccrual | 20,585 | 63,416
Commercial And Business Lending [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 11,693,363 | 10,723,536
Commercial And Business Lending [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 2,432 | 5,374
Commercial And Business Lending [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 462 | 549
Commercial And Business Lending [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 642 | 380
Commercial Real Estate Investor Portfolio Segment [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 5,227,975 | 5,124,245
Financing Receivable, Nonaccrual | 16,705 | 0
Commercial Real Estate Investor Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 5,174,879 | 5,086,117
Commercial Real Estate Investor Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 5,117 | 0
Commercial Real Estate Investor Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 31,274 | 18,697
Commercial Real Estate Investor Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 0 | 19,432
Construction Loans [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 1,982,632 | 2,271,398
Financing Receivable, Nonaccrual | 30 | 6
Construction Loans [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 1,982,581 | 2,271,392
Construction Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 21 | 0
Construction Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 0 | 0
Construction Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 0 | 0
Commercial Real Estate Portfolio Segment [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 7,210,607 | 7,395,644
Financing Receivable, Nonaccrual | 16,735 | 6
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 7,157,460 | 7,357,509
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 5,138 | 0
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 31,274 | 18,697
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 0 | 19,432
Commercial Portfolio Segment [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 18,928,090 | 18,188,898
Financing Receivable, Nonaccrual | 37,320 | 63,422
Commercial Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 18,850,823 | 18,081,044
Commercial Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 7,570 | 5,374
Commercial Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 31,736 | 19,246
Commercial Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 642 | 19,812
Residential Mortgage [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 7,047,541 | 7,864,891
Financing Receivable, Nonaccrual | 70,038 | 71,142
Residential Mortgage [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 6,962,610 | 7,780,304
Residential Mortgage [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 14,731 | 13,294
Residential Mortgage [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 162 | 152
Residential Mortgage [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 0 | 0
Automobile Loan [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 2,810,220 | 2,256,162
Financing Receivable, Nonaccrual | 7,402 | 5,797
Automobile Loan [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 2,787,967 | 2,232,906
Automobile Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 12,588 | 14,712
Automobile Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 2,262 | 2,674
Automobile Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 0 | 73
Home Equity Line of Credit [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 664,252 | 628,526
Financing Receivable, Nonaccrual | 8,378 | 8,508
Home Equity Line of Credit [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 651,248 | 615,810
Home Equity Line of Credit [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 4,181 | 3,500
Home Equity Line of Credit [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 445 | 708
Home Equity Line of Credit [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 0 | 0
Other Consumer [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 318,483 | 277,740
Financing Receivable, Nonaccrual | 122 | 128
Other Consumer [Member] | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 312,687 | 273,644
Other Consumer [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 1,892 | 1,233
Other Consumer [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 1,236 | 932
Other Consumer [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 2,547 | 1,803
Total consumer |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 10,840,496 | 11,027,319
Financing Receivable, Nonaccrual | 85,941 | 85,574
Total consumer | Financial Asset, Not Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 10,714,512 | 10,902,664
Total consumer | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 33,391 | 32,739
Total consumer | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | 4,105 | 4,467
Total consumer | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans and Leases Receivable, Net of Deferred Income | $ 2,547 | $ 1,876

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