v3.26.1
Loans and Allowance for Credit Losses - Schedule of Shows the Age Analysis of Past Due Loans (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Financing Receivable, Past Due [Line Items]    
Total $ 22,924,044 $ 23,085,065
Total Past Due    
Financing Receivable, Past Due [Line Items]    
Total 138,686 130,116
30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Total 71,156 64,739
60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Total 17,687 17,304
90 or More Days Past Due    
Financing Receivable, Past Due [Line Items]    
Total 49,843 48,073
Current    
Financing Receivable, Past Due [Line Items]    
Total 22,785,358 22,954,949
Commercial and industrial | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 4,346,612 4,295,702
Commercial and industrial | Total Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 6,533 7,123
Commercial and industrial | 30-59 Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 2,357 5,368
Commercial and industrial | 60-89 Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 60 164
Commercial and industrial | 90 or More Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 4,116 1,591
Commercial and industrial | Current | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 4,340,079 4,288,579
Commercial real estate | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 9,373,476 9,414,361
Commercial real estate | Total Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 21,824 21,160
Commercial real estate | 30-59 Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 11,613 5,992
Commercial real estate | 60-89 Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 821 994
Commercial real estate | 90 or More Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 9,390 14,174
Commercial real estate | Current | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 9,351,652 9,393,201
Commercial construction | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 502,037 563,485
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 502,037 562,452
Business banking | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 1,536,838 1,593,694
Business banking | Total Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 25,798 29,197
Business banking | 30-59 Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 11,154 16,673
Business banking | 60-89 Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 3,698 3,530
Business banking | 90 or More Days Past Due | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 10,946 8,994
Business banking | Current | Commercial Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 1,511,040 1,564,497
Residential real estate | Residential Real Estate    
Financing Receivable, Past Due [Line Items]    
Total 5,188,044 5,232,180
Residential real estate | Total Past Due | Residential Real Estate    
Financing Receivable, Past Due [Line Items]    
Total 67,731 53,397
Residential real estate | 30-59 Days Past Due | Residential Real Estate    
Financing Receivable, Past Due [Line Items]    
Total 38,995 26,493
Residential real estate | 60-89 Days Past Due | Residential Real Estate    
Financing Receivable, Past Due [Line Items]    
Total 8,506 10,361
Residential real estate | 90 or More Days Past Due | Residential Real Estate    
Financing Receivable, Past Due [Line Items]    
Total 20,230 16,543
Residential real estate | Current | Residential Real Estate    
Financing Receivable, Past Due [Line Items]    
Total 5,120,313 5,178,783
Consumer home equity | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 1,761,573 1,753,610
Consumer home equity | Total Past Due | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 16,029 17,391
Consumer home equity | 30-59 Days Past Due | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 6,520 9,929
Consumer home equity | 60-89 Days Past Due | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 4,438 2,141
Consumer home equity | 90 or More Days Past Due | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 5,071 5,321
Consumer home equity | Current | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 1,745,544 1,736,219
Other Consumer | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 215,464 232,033
Other Consumer | Total Past Due | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 771 815
Other Consumer | 30-59 Days Past Due | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 517 284
Other Consumer | 60-89 Days Past Due | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 164 114
Other Consumer | 90 or More Days Past Due | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total 90 417
Other Consumer | Current | Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Total $ 214,693 $ 231,218