v3.26.1
Loans and Allowance for Credit Losses - Schedule of Shows the Age Analysis of Past Due Loans (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Financing Receivable, Past Due [Line Items]    
Total $ 23,281,401 $ 23,085,065
Total Past Due    
Financing Receivable, Past Due [Line Items]    
Total 119,223 130,116
30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Total 47,713 64,739
60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Total 29,548 17,304
90 or More Days Past Due    
Financing Receivable, Past Due [Line Items]    
Total 41,962 48,073
Current    
Financing Receivable, Past Due [Line Items]    
Total 23,162,178 22,954,949
Commercial and industrial | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 4,672,023 4,295,702
Commercial and industrial | Total Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 7,515 7,123
Commercial and industrial | 30-59 Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 4,381 5,368
Commercial and industrial | 60-89 Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 0 164
Commercial and industrial | 90 or More Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 3,134 1,591
Commercial and industrial | Current | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 4,664,508 4,288,579
Commercial real estate | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 9,300,751 9,414,361
Commercial real estate | Total Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 21,033 21,160
Commercial real estate | 30-59 Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 3,572 5,992
Commercial real estate | 60-89 Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 13,984 994
Commercial real estate | 90 or More Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 3,477 14,174
Commercial real estate | Current | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 9,279,718 9,393,201
Commercial construction | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 543,558 563,485
Commercial construction | Total Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 0 1,033
Commercial construction | 30-59 Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 0 0
Commercial construction | 60-89 Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 0 0
Commercial construction | 90 or More Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 0 1,033
Commercial construction | Current | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 543,558 562,452
Business banking | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 1,553,957 1,593,694
Business banking | Total Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 22,199 29,197
Business banking | 30-59 Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 8,830 16,673
Business banking | 60-89 Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 4,268 3,530
Business banking | 90 or More Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 9,101 8,994
Business banking | Current | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 1,531,758 1,564,497
Residential real estate | Residential Real Estate    
Financing Receivable, Past Due [Line Items]    
Total 5,171,167 5,232,180
Residential real estate | Total Past Due | Residential Real Estate    
Financing Receivable, Past Due [Line Items]    
Total 47,429 53,397
Residential real estate | 30-59 Days Past Due | Residential Real Estate    
Financing Receivable, Past Due [Line Items]    
Total 19,622 26,493
Residential real estate | 60-89 Days Past Due | Residential Real Estate    
Financing Receivable, Past Due [Line Items]    
Total 7,516 10,361
Residential real estate | 90 or More Days Past Due | Residential Real Estate    
Financing Receivable, Past Due [Line Items]    
Total 20,291 16,543
Residential real estate | Current | Residential Real Estate    
Financing Receivable, Past Due [Line Items]    
Total 5,123,738 5,178,783
Consumer home equity | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 1,821,988 1,753,610
Consumer home equity | Total Past Due | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 20,222 17,391
Consumer home equity | 30-59 Days Past Due | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 10,837 9,929
Consumer home equity | 60-89 Days Past Due | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 3,569 2,141
Consumer home equity | 90 or More Days Past Due | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 5,816 5,321
Consumer home equity | Current | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 1,801,766 1,736,219
Other Consumer | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 217,957 232,033
Other Consumer | Total Past Due | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 825 815
Other Consumer | 30-59 Days Past Due | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 471 284
Other Consumer | 60-89 Days Past Due | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 211 114
Other Consumer | 90 or More Days Past Due | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 143 417
Other Consumer | Current | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total $ 217,132 $ 231,218