v3.25.2
Loans and Allowance for Loan Losses - Schedule of Current, Accruing Past Due, and Non-Accrual Loans by Portfolio Class (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs $ 43,536,716 $ 42,609,028
Non-accrual with an ALL 215,356 271,174
Non-accrual without an ALL 42,059 37,990
Accrued interest receivable $ 220,400 $ 217,100
Financing receivable, accrued interest, after allowance for credit loss, statement of financial position [extensible enumeration] Other assets Other assets
Deferred loan costs (fees) $ (36,600) $ (34,100)
Total commercial and industrial    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 23,098,344 22,331,129
Non-accrual with an ALL 111,648 119,264
Non-accrual without an ALL 17,661 37,990
Total commercial and industrial | Commercial, financial and agricultural    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 15,238,812 14,498,992
Non-accrual with an ALL 100,571 98,145
Non-accrual without an ALL 9,610 24,729
Total commercial and industrial | Owner-occupied    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 7,859,532 7,832,137
Non-accrual with an ALL 11,077 21,119
Non-accrual without an ALL 8,051 13,261
Total commercial real estate    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 12,139,690 12,014,619
Non-accrual with an ALL 39,141 77,804
Non-accrual without an ALL 22,122 0
Total commercial real estate | Investment properties    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 11,309,520 11,181,204
Non-accrual with an ALL 35,401 74,030
Non-accrual without an ALL 22,122 0
Total commercial real estate | 1-4 family properties    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 536,878 545,918
Non-accrual with an ALL 2,386 2,385
Non-accrual without an ALL 0 0
Total commercial real estate | Land and development    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 293,292 287,497
Non-accrual with an ALL 1,354 1,389
Non-accrual without an ALL 0 0
Total consumer    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 8,298,682 8,263,280
Non-accrual with an ALL 64,567 74,106
Non-accrual without an ALL 2,276 0
Total consumer | Consumer mortgages    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 5,246,940 5,288,776
Non-accrual with an ALL 41,849 50,834
Non-accrual without an ALL 1,627 0
Total consumer | Home equity    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 1,852,884 1,831,287
Non-accrual with an ALL 17,098 17,365
Non-accrual without an ALL 615 0
Total consumer | Credit cards    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 194,630 185,871
Non-accrual with an ALL 0 0
Non-accrual without an ALL 0 0
Total consumer | Other consumer loans    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 1,004,228 957,346
Non-accrual with an ALL 5,620 5,907
Non-accrual without an ALL 34 0
Current    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 43,175,034 42,190,986
Current | Total commercial and industrial    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 22,910,880 22,106,891
Current | Total commercial and industrial | Commercial, financial and agricultural    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 15,113,723 14,352,839
Current | Total commercial and industrial | Owner-occupied    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 7,797,157 7,754,052
Current | Total commercial real estate    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 12,075,474 11,931,858
Current | Total commercial real estate | Investment properties    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 11,250,988 11,105,168
Current | Total commercial real estate | 1-4 family properties    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 533,156 541,897
Current | Total commercial real estate | Land and development    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 291,330 284,793
Current | Total consumer    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 8,188,680 8,152,237
Current | Total consumer | Consumer mortgages    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 5,192,882 5,228,580
Current | Total consumer | Home equity    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 1,815,612 1,800,614
Current | Total consumer | Credit cards    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 191,172 182,435
Current | Total consumer | Other consumer loans    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 989,014 940,608
Accruing 30-89 Days Past Due    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 64,202 60,286
Accruing 30-89 Days Past Due | Total commercial and industrial    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 19,978 20,647
Accruing 30-89 Days Past Due | Total commercial and industrial | Commercial, financial and agricultural    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 12,810 12,947
Accruing 30-89 Days Past Due | Total commercial and industrial | Owner-occupied    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 7,168 7,700
Accruing 30-89 Days Past Due | Total commercial real estate    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 2,953 4,755
Accruing 30-89 Days Past Due | Total commercial real estate | Investment properties    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 1,009 2,006
Accruing 30-89 Days Past Due | Total commercial real estate | 1-4 family properties    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 1,336 1,636
Accruing 30-89 Days Past Due | Total commercial real estate | Land and development    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 608 1,113
Accruing 30-89 Days Past Due | Total consumer    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 41,271 34,884
Accruing 30-89 Days Past Due | Total consumer | Consumer mortgages    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 10,582 9,362
Accruing 30-89 Days Past Due | Total consumer | Home equity    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 19,559 13,131
Accruing 30-89 Days Past Due | Total consumer | Credit cards    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 1,656 1,573
Accruing 30-89 Days Past Due | Total consumer | Other consumer loans    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 9,474 10,818
Accruing 90 Days or Greater Past Due    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 40,065 48,592
Accruing 90 Days or Greater Past Due | Total commercial and industrial    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 38,177 46,337
Accruing 90 Days or Greater Past Due | Total commercial and industrial | Commercial, financial and agricultural    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 2,098 10,332
Accruing 90 Days or Greater Past Due | Total commercial and industrial | Owner-occupied    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 36,079 36,005
Accruing 90 Days or Greater Past Due | Total commercial real estate    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 0 202
Accruing 90 Days or Greater Past Due | Total commercial real estate | Investment properties    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 0 0
Accruing 90 Days or Greater Past Due | Total commercial real estate | 1-4 family properties    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 0 0
Accruing 90 Days or Greater Past Due | Total commercial real estate | Land and development    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 0 202
Accruing 90 Days or Greater Past Due | Total consumer    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 1,888 2,053
Accruing 90 Days or Greater Past Due | Total consumer | Consumer mortgages    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 0 0
Accruing 90 Days or Greater Past Due | Total consumer | Home equity    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 0 177
Accruing 90 Days or Greater Past Due | Total consumer | Credit cards    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 1,802 1,863
Accruing 90 Days or Greater Past Due | Total consumer | Other consumer loans    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 86 13
Total Accruing Past Due    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 104,267 108,878
Total Accruing Past Due | Total commercial and industrial    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 58,155 66,984
Total Accruing Past Due | Total commercial and industrial | Commercial, financial and agricultural    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 14,908 23,279
Total Accruing Past Due | Total commercial and industrial | Owner-occupied    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 43,247 43,705
Total Accruing Past Due | Total commercial real estate    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 2,953 4,957
Total Accruing Past Due | Total commercial real estate | Investment properties    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 1,009 2,006
Total Accruing Past Due | Total commercial real estate | 1-4 family properties    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 1,336 1,636
Total Accruing Past Due | Total commercial real estate | Land and development    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 608 1,315
Total Accruing Past Due | Total consumer    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 43,159 36,937
Total Accruing Past Due | Total consumer | Consumer mortgages    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 10,582 9,362
Total Accruing Past Due | Total consumer | Home equity    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 19,559 13,308
Total Accruing Past Due | Total consumer | Credit cards    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs 3,458 3,436
Total Accruing Past Due | Total consumer | Other consumer loans    
Financing Receivable, Nonaccrual [Line Items]    
Loans, net of deferred fees and costs $ 9,560 $ 10,831