v3.25.2
Allowance for Credit Losses - Schedule of Activity in the Allowance for Credit Losses by Loan Portfolio (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
Allowance for credit losses at beginning of period $ 447,941 $ 427,175 $ 436,603 $ 427,265
Other adjustments 180 (19) 184 (50)
Charge-offs (18,495) (34,756) (35,944) (58,597)
Recoveries 5,155 4,770 9,964 6,861
Provision for credit losses - Other 22,282   46,256  
Provision for credit losses 22,300 39,899 46,300 61,590
Allowance for credit losses at period end 457,063 437,069 457,063 437,069
Individually measured 43,363 37,290 43,363 37,290
Collectively measured 413,700 399,779 413,700 399,779
Individually measured 143,486 118,286 143,486 118,286
Collectively measured 50,761,309 44,421,411 50,761,309 44,421,411
Loans held at fair value 136,884 135,834 136,884 135,834
Commercial        
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
Allowance for credit losses at beginning of period 201,183 166,518 175,837 169,604
Other adjustments 0 0 0 0
Charge-offs (6,148) (9,584) (15,870) (20,799)
Recoveries 1,746 950 2,675 1,429
Provision for credit losses - Other (2,213)   31,926  
Provision for credit losses   24,107   31,757
Allowance for credit losses at period end 194,568 181,991 194,568 181,991
Individually measured 35,129 30,927 35,129 30,927
Collectively measured 159,439 151,064 159,439 151,064
Individually measured 80,877 51,087 80,877 51,087
Collectively measured 16,306,554 14,103,375 16,306,554 14,103,375
Loans held at fair value 0 0 0 0
Commercial real estate        
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
Allowance for credit losses at beginning of period 210,010 226,052 222,856 223,853
Other adjustments 0 0 0 0
Charge-offs (5,711) (15,526) (6,165) (20,995)
Recoveries 10 90 22 121
Provision for credit losses - Other 20,049   7,645  
Provision for credit losses   13,112   20,749
Allowance for credit losses at period end 224,358 223,728 224,358 223,728
Individually measured 8,127 6,330 8,127 6,330
Collectively measured 216,231 217,398 216,231 217,398
Individually measured 32,828 48,289 32,828 48,289
Collectively measured 13,259,182 11,898,908 13,259,182 11,898,908
Loans held at fair value 0 0 0 0
Home  Equity        
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
Allowance for credit losses at beginning of period 9,139 7,191 8,943 7,116
Other adjustments 0 0 0 0
Charge-offs (111) 0 (111) (74)
Recoveries 30 35 246 64
Provision for credit losses - Other 163   143  
Provision for credit losses   16   136
Allowance for credit losses at period end 9,221 7,242 9,221 7,242
Individually measured 0 0 0 0
Collectively measured 9,221 7,242 9,221 7,242
Individually measured 1,780 1,100 1,780 1,100
Collectively measured 465,035 355,213 465,035 355,213
Loans held at fair value 0 0 0 0
Residential Real Estate        
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
Allowance for credit losses at beginning of period 10,652 13,701 10,335 13,133
Other adjustments 0 0 0 0
Charge-offs 0 (23) 0 (61)
Recoveries 2 8 138 10
Provision for credit losses - Other 801   982  
Provision for credit losses   (4,913)   (4,309)
Allowance for credit losses at period end 11,455 8,773 11,455 8,773
Individually measured 103 32 103 32
Collectively measured 11,352 8,741 11,352 8,741
Individually measured 27,960 17,807 27,960 17,807
Collectively measured 3,783,938 2,913,694 3,783,938 2,913,694
Loans held at fair value 136,884 135,834 136,884 135,834
Premium Finance Receivables        
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
Allowance for credit losses at beginning of period 16,039 13,330 17,820 13,069
Other adjustments 180 (19) 184 (50)
Charge-offs (6,346) (9,486) (13,472) (16,424)
Recoveries 3,335 3,663 6,822 5,190
Provision for credit losses - Other 3,404   5,258  
Provision for credit losses   7,258   12,961
Allowance for credit losses at period end 16,612 14,746 16,612 14,746
Individually measured 0 0 0 0
Collectively measured 16,612 14,746 16,612 14,746
Individually measured 0 0 0 0
Collectively measured 16,830,136 15,062,868 16,830,136 15,062,868
Loans held at fair value 0 0 0 0
Consumer and Other        
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
Allowance for credit losses at beginning of period 918 383 812 490
Other adjustments 0 0 0 0
Charge-offs (179) (137) (326) (244)
Recoveries 32 24 61 47
Provision for credit losses - Other 78   302  
Provision for credit losses   319   296
Allowance for credit losses at period end 849 589 849 589
Individually measured 4 1 4 1
Collectively measured 845 588 845 588
Individually measured 41 3 41 3
Collectively measured 116,464 87,353 116,464 87,353
Loans held at fair value $ 0 $ 0