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Loans and Allowance for Credit Losses (Disaggregation of Credit Quality Disclosures) (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Total Commercial [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Term Loans, Amortized Cost Basis by Origination Year, 2022 | $ 4,954,258 | $ 5,076,311
Term Loans, Amortized Cost Basis by Origination Year, 2021 | 3,700,837 | 3,073,804
Term Loans, Amortized Cost Basis by Origination Year, 2020 | 2,145,461 | 2,114,506
Term Loans, Amortized Cost Basis by Origination Year, 2019 | 1,411,421 | 1,285,226
Term Loans, Amortized Cost Basis by Origination Year, 2018 | 834,697 | 1,003,833
Term Loans, Amortized Cost Basis by Origination Year, Prior | 1,626,992 | 1,385,473
Revolving Loans | 3,615,992 | 3,084,875
Revolving Loans Converted to Term Loans | 154,436 | 102,974
Notes Receivable Gross | 18,444,094 | 17,127,002
Total Commercial [Member] | Pass [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Term Loans, Amortized Cost Basis by Origination Year, 2022 | 4,789,035 | 4,946,459
Term Loans, Amortized Cost Basis by Origination Year, 2021 | 3,608,540 | 3,008,160
Term Loans, Amortized Cost Basis by Origination Year, 2020 | 2,026,017 | 2,035,849
Term Loans, Amortized Cost Basis by Origination Year, 2019 | 1,327,839 | 1,212,306
Term Loans, Amortized Cost Basis by Origination Year, 2018 | 779,966 | 937,639
Term Loans, Amortized Cost Basis by Origination Year, Prior | 1,539,131 | 1,296,382
Revolving Loans | 3,482,828 | 3,002,064
Revolving Loans Converted to Term Loans | 131,222 | 80,535
Notes Receivable Gross | 17,684,578 | 16,519,394
Total Commercial [Member] | Pass-Watch [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Term Loans, Amortized Cost Basis by Origination Year, 2022 | 84,696 | 68,421
Term Loans, Amortized Cost Basis by Origination Year, 2021 | 64,263 | 19,467
Term Loans, Amortized Cost Basis by Origination Year, 2020 | 94,484 | 31,598
Term Loans, Amortized Cost Basis by Origination Year, 2019 | 46,483 | 45,846
Term Loans, Amortized Cost Basis by Origination Year, 2018 | 31,375 | 27,188
Term Loans, Amortized Cost Basis by Origination Year, Prior | 58,567 | 69,310
Revolving Loans | 67,767 | 52,850
Revolving Loans Converted to Term Loans | 9,985 | 5,714
Notes Receivable Gross | 457,620 | 320,394
Total Commercial [Member] | Special Mention [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Term Loans, Amortized Cost Basis by Origination Year, 2022 | 30,511 | 17,536
Term Loans, Amortized Cost Basis by Origination Year, 2021 | 13,625 | 2,683
Term Loans, Amortized Cost Basis by Origination Year, 2020 | 3,694 | 10,296
Term Loans, Amortized Cost Basis by Origination Year, 2019 | 7,749 | 12,410
Term Loans, Amortized Cost Basis by Origination Year, 2018 | 1,719 | 10,669
Term Loans, Amortized Cost Basis by Origination Year, Prior | 5,701 | 3,656
Revolving Loans | 25,184 | 9,603
Revolving Loans Converted to Term Loans | 2,070 | 6,243
Notes Receivable Gross | 90,253 | 73,096
Total Commercial [Member] | Substandard [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Term Loans, Amortized Cost Basis by Origination Year, 2022 | 50,016 | 43,895
Term Loans, Amortized Cost Basis by Origination Year, 2021 | 14,409 | 43,494
Term Loans, Amortized Cost Basis by Origination Year, 2020 | 21,266 | 36,763
Term Loans, Amortized Cost Basis by Origination Year, 2019 | 29,350 | 14,664
Term Loans, Amortized Cost Basis by Origination Year, 2018 | 21,637 | 28,337
Term Loans, Amortized Cost Basis by Origination Year, Prior | 23,593 | 16,125
Revolving Loans | 40,213 | 20,358
Revolving Loans Converted to Term Loans | 11,159 | 10,482
Notes Receivable Gross | 211,643 | 214,118
Residential Mortgage and Consumer [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Term Loans, Amortized Cost Basis by Origination Year, 2022 | 736,331 | 581,378
Term Loans, Amortized Cost Basis by Origination Year, 2021 | 754,984 | 468,448
Term Loans, Amortized Cost Basis by Origination Year, 2020 | 565,289 | 357,851
Term Loans, Amortized Cost Basis by Origination Year, 2019 | 257,100 | 227,959
Term Loans, Amortized Cost Basis by Origination Year, 2018 | 151,695 | 325,063
Term Loans, Amortized Cost Basis by Origination Year, Prior | 981,552 | 916,726
Revolving Loans | 1,216,564 | 1,121,893
Revolving Loans Converted to Term Loans | 6,437 | 7,962
Notes Receivable Gross | 4,669,952 | 4,007,280
Residential Mortgage and Consumer [Member] | Performing [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Term Loans, Amortized Cost Basis by Origination Year, 2022 | 735,080 | 580,813
Term Loans, Amortized Cost Basis by Origination Year, 2021 | 752,352 | 467,497
Term Loans, Amortized Cost Basis by Origination Year, 2020 | 564,345 | 355,833
Term Loans, Amortized Cost Basis by Origination Year, 2019 | 255,146 | 223,494
Term Loans, Amortized Cost Basis by Origination Year, 2018 | 149,234 | 320,344
Term Loans, Amortized Cost Basis by Origination Year, Prior | 959,409 | 892,361
Revolving Loans | 1,216,105 | 1,120,461
Revolving Loans Converted to Term Loans | 4,834 | 5,995
Notes Receivable Gross | 4,636,505 | 3,966,798
Residential Mortgage and Consumer [Member] | Nonperforming [Member] |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Term Loans, Amortized Cost Basis by Origination Year, 2022 | 1,251 | 565
Term Loans, Amortized Cost Basis by Origination Year, 2021 | 2,632 | 951
Term Loans, Amortized Cost Basis by Origination Year, 2020 | 944 | 2,018
Term Loans, Amortized Cost Basis by Origination Year, 2019 | 1,954 | 4,465
Term Loans, Amortized Cost Basis by Origination Year, 2018 | 2,461 | 4,719
Term Loans, Amortized Cost Basis by Origination Year, Prior | 22,143 | 24,365
Revolving Loans | 459 | 1,432
Revolving Loans Converted to Term Loans | 1,603 | 1,967
Notes Receivable Gross | $ 33,447 | $ 40,482

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