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Loans And Allowance For Loan Losses - Schedule Of Current, Accruing Past Due And Nonaccrual Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | $ 43,716,353 | $ 39,311,958
Non-accrual with an ALL | 113,519 | 100,518
Non-accrual without an ALL | 14,542 | 30,524
Commercial And Industrial |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 22,066,656 | 19,622,924
Non-accrual with an ALL | 57,507 | 45,064
Non-accrual without an ALL | 11,904 | 27,919
Commercial And Industrial | Commercial, financial, and agricultural |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 13,874,416 | 12,147,858
Non-accrual with an ALL | 48,008 | 37,918
Non-accrual without an ALL | 11,299 | 23,869
Commercial And Industrial | Owner-occupied |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 8,192,240 | 7,475,066
Non-accrual with an ALL | 9,499 | 7,146
Non-accrual without an ALL | 605 | 4,050
Commercial Real Estate |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 12,650,313 | 11,015,111
Non-accrual with an ALL | 5,115 | 9,726
Non-accrual without an ALL | 2,638 | 2,605
Commercial Real Estate | Investment properties |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 11,644,047 | 9,902,776
Non-accrual with an ALL | 1,785 | 3,273
Non-accrual without an ALL | 1,688 | 2,577
Commercial Real Estate | 1-4 family properties |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 616,933 | 645,469
Non-accrual with an ALL | 2,172 | 4,535
Non-accrual without an ALL | 950 | 28
Commercial Real Estate | Land and development |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 389,333 | 466,866
Non-accrual with an ALL | 1,158 | 1,918
Non-accrual without an ALL | 0 | 0
Consumer |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 8,999,384 | 8,673,923
Non-accrual with an ALL | 50,897 | 45,728
Non-accrual without an ALL | 0 | 0
Consumer | Consumer mortgages |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 5,214,443 | 5,068,998
Non-accrual with an ALL | 36,847 | 29,078
Non-accrual without an ALL | 0 | 0
Consumer | Home equity |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 1,757,038 | 1,361,419
Non-accrual with an ALL | 6,830 | 9,773
Non-accrual without an ALL | 0 | 0
Consumer | Credit cards |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 203,612 | 204,172
Non-accrual with an ALL | 0 | 0
Non-accrual without an ALL | 0 | 0
Consumer | Other consumer loans |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 1,824,291 | 2,039,334
Non-accrual with an ALL | 7,220 | 6,877
Non-accrual without an ALL | 0 | 0
Current |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 43,522,724 | 39,123,351
Current | Commercial And Industrial |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 21,980,288 | 19,528,924
Current | Commercial And Industrial | Commercial, financial, and agricultural |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 13,798,639 | 12,068,740
Current | Commercial And Industrial | Owner-occupied |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 8,181,649 | 7,460,184
Current | Commercial Real Estate |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 12,640,761 | 10,998,504
Current | Commercial Real Estate | Investment properties |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 11,639,614 | 9,894,924
Current | Commercial Real Estate | 1-4 family properties |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 613,049 | 639,631
Current | Commercial Real Estate | Land and development |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 388,098 | 463,949
Current | Consumer |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 8,901,675 | 8,595,923
Current | Consumer | Consumer mortgages |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 5,163,417 | 5,033,537
Current | Consumer | Home equity |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 1,742,412 | 1,349,027
Current | Consumer | Credit cards |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 200,047 | 201,929
Current | Consumer | Other consumer loans |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 1,795,799 | 2,011,430
Accruing 30-89 Days Past Due |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 62,195 | 50,795
Accruing 30-89 Days Past Due | Commercial And Industrial |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 15,520 | 17,005
Accruing 30-89 Days Past Due | Commercial And Industrial | Commercial, financial, and agricultural |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 15,033 | 13,378
Accruing 30-89 Days Past Due | Commercial And Industrial | Owner-occupied |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 487 | 3,627
Accruing 30-89 Days Past Due | Commercial Real Estate |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 1,799 | 3,312
Accruing 30-89 Days Past Due | Commercial Real Estate | Investment properties |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 960 | 1,285
Accruing 30-89 Days Past Due | Commercial Real Estate | 1-4 family properties |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 762 | 1,182
Accruing 30-89 Days Past Due | Commercial Real Estate | Land and development |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 77 | 845
Accruing 30-89 Days Past Due | Consumer |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 44,876 | 30,478
Accruing 30-89 Days Past Due | Consumer | Consumer mortgages |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 13,969 | 6,257
Accruing 30-89 Days Past Due | Consumer | Home equity |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 7,795 | 2,619
Accruing 30-89 Days Past Due | Consumer | Credit cards |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 1,843 | 1,233
Accruing 30-89 Days Past Due | Consumer | Other consumer loans |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 21,269 | 20,369
Accruing 90 Days or Greater Past Due |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 3,373 | 6,770
Accruing 90 Days or Greater Past Due | Commercial And Industrial |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 1,437 | 4,012
Accruing 90 Days or Greater Past Due | Commercial And Industrial | Commercial, financial, and agricultural |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 1,437 | 3,953
Accruing 90 Days or Greater Past Due | Commercial And Industrial | Owner-occupied |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 0 | 59
Accruing 90 Days or Greater Past Due | Commercial Real Estate |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 0 | 964
Accruing 90 Days or Greater Past Due | Commercial Real Estate | Investment properties |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 0 | 717
Accruing 90 Days or Greater Past Due | Commercial Real Estate | 1-4 family properties |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 0 | 93
Accruing 90 Days or Greater Past Due | Commercial Real Estate | Land and development |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 0 | 154
Accruing 90 Days or Greater Past Due | Consumer |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 1,936 | 1,794
Accruing 90 Days or Greater Past Due | Consumer | Consumer mortgages |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 210 | 126
Accruing 90 Days or Greater Past Due | Consumer | Home equity |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 1 | 0
Accruing 90 Days or Greater Past Due | Consumer | Credit cards |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 1,722 | 1,010
Accruing 90 Days or Greater Past Due | Consumer | Other consumer loans |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 3 | 658
Total Accruing Past Due |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 65,568 | 57,565
Total Accruing Past Due | Commercial And Industrial |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 16,957 | 21,017
Total Accruing Past Due | Commercial And Industrial | Commercial, financial, and agricultural |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 16,470 | 17,331
Total Accruing Past Due | Commercial And Industrial | Owner-occupied |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 487 | 3,686
Total Accruing Past Due | Commercial Real Estate |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 1,799 | 4,276
Total Accruing Past Due | Commercial Real Estate | Investment properties |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 960 | 2,002
Total Accruing Past Due | Commercial Real Estate | 1-4 family properties |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 762 | 1,275
Total Accruing Past Due | Commercial Real Estate | Land and development |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 77 | 999
Total Accruing Past Due | Consumer |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 46,812 | 32,272
Total Accruing Past Due | Consumer | Consumer mortgages |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 14,179 | 6,383
Total Accruing Past Due | Consumer | Home equity |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 7,796 | 2,619
Total Accruing Past Due | Consumer | Credit cards |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | 3,565 | 2,243
Total Accruing Past Due | Consumer | Other consumer loans |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Loans, net of deferred fees and costs | $ 21,272 | $ 21,027

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