v3.26.1
LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Past Due Loans (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income $ 50,772,584 $ 48,764,162
Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 50,772,584 48,764,162
Commercial    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 16,112,685 14,983,861
Commercial | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 15,861,629 14,763,451
Commercial real estate    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 22,535,229 22,050,007
Commercial real estate | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 22,349,800 21,874,337
BBCC | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 436,485 396,080
Residential    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 8,760,832 8,467,496
Residential | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 8,760,832 8,467,496
Indirect    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 1,183,585 1,075,235
Indirect | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 1,183,585 1,075,235
Direct    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 597,607 649,297
Direct | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 597,607 649,297
Home equity    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 1,582,646 1,538,266
Home equity | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 1,582,646 1,538,266
Total Past Due | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 354,283 393,022
Total Past Due | Commercial | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 86,926 99,678
Total Past Due | Commercial real estate | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 98,722 151,802
Total Past Due | BBCC | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 1,844 3,119
Total Past Due | Residential | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 120,975 99,979
Total Past Due | Indirect | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 12,129 12,984
Total Past Due | Direct | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 15,755 7,011
Total Past Due | Home equity | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 17,932 18,449
30-59 Days Past Due | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 113,664 111,360
30-59 Days Past Due | Commercial | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 8,864 23,702
30-59 Days Past Due | Commercial real estate | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 14,771 20,870
30-59 Days Past Due | BBCC | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 802 1,297
30-59 Days Past Due | Residential | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 61,821 45,817
30-59 Days Past Due | Indirect | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 8,345 8,844
30-59 Days Past Due | Direct | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 11,900 3,644
30-59 Days Past Due | Home equity | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 7,161 7,186
60-89 Days Past Due | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 59,089 37,184
60-89 Days Past Due | Commercial | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 9,604 7,200
60-89 Days Past Due | Commercial real estate | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 26,215 8,151
60-89 Days Past Due | BBCC | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 303 1,359
60-89 Days Past Due | Residential | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 16,778 13,650
60-89 Days Past Due | Indirect | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 2,122 2,263
60-89 Days Past Due | Direct | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 1,077 1,605
60-89 Days Past Due | Home equity | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 2,990 2,956
Past Due 90 Days or More | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 181,530 244,478
Past Due 90 Days or More | Commercial | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 68,458 68,776
Past Due 90 Days or More | Commercial real estate | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 57,736 122,781
Past Due 90 Days or More | BBCC | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 739 463
Past Due 90 Days or More | Residential | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 42,376 40,512
Past Due 90 Days or More | Indirect | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 1,662 1,877
Past Due 90 Days or More | Direct | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 2,778 1,762
Past Due 90 Days or More | Home equity | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 7,781 8,307
Current | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 50,418,301 48,371,140
Current | Commercial | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 15,774,703 14,663,773
Current | Commercial real estate | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 22,251,078 21,722,535
Current | BBCC | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 434,641 392,961
Current | Residential | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 8,639,857 8,367,517
Current | Indirect | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 1,171,456 1,062,251
Current | Direct | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income 581,852 642,286
Current | Home equity | Portfolio Segment After Reclassifications    
Financing Receivable, Past Due [Line Items]    
Total loans, net of unearned income $ 1,564,714 $ 1,519,817