v3.25.2
Segment Reporting - Schedule of Segment Reporting Information, by Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Income Statement Related Disclosures        
Net interest income (expense) $ 459,561 $ 434,998 $ 913,945 $ 853,844
Provision for (reversal of) credit losses 3,245 26,404 14,166 80,384
Net interest income after provision for (reversal of) credit losses 456,316 408,594 899,779 773,460
Non-interest revenue:        
Service charges on deposit accounts 25,258 22,907 48,372 44,720
Fiduciary and asset management fees 20,332 19,728 40,249 38,741
Card fees 20,132 19,418 41,359 38,904
Brokerage revenue 20,748 20,457 41,107 43,164
Mortgage banking income 4,435 3,944 7,773 7,362
Capital markets income 12,960 15,077 19,901 21,704
Other non-interest revenue 30,270 (230,382) 51,840 (204,558)
Total non-interest revenue 134,135 (128,851) 250,601 (9,963)
Non-interest expense:        
Salaries and other personnel expense 192,182 179,407 377,692 367,928
Other operating expense 123,519 122,394 246,043 256,614
Total non-interest expense 315,701 301,801 623,735 624,542
Income (loss) before income taxes 274,750 (22,058) 526,645 138,955
Investment securities gains (losses), net 0 (256,660) 0 (256,660)
Operating Segments | Wholesale Banking        
Income Statement Related Disclosures        
Net interest income (expense) 174,780 181,574 353,245 365,240
Provision for (reversal of) credit losses 30,390 31,133 62,315 60,303
Net interest income after provision for (reversal of) credit losses 144,390 150,441 290,930 304,937
Non-interest revenue:        
Service charges on deposit accounts 5,910 5,225 11,568 10,360
Fiduciary and asset management fees 0 0 0 0
Card fees 3 3 6 6
Brokerage revenue 0 0 0 0
Mortgage banking income 0 0 0 0
Capital markets income 6,870 8,075 10,847 11,270
Other non-interest revenue 4,082 2,642 7,251 5,634
Total non-interest revenue 16,865 15,945 29,672 27,270
Non-interest expense:        
Salaries and other personnel expense 23,529 21,902 49,288 47,754
Other operating expense 8,418 12,673 16,600 22,131
Total non-interest expense 31,947 34,575 65,888 69,885
Income (loss) before income taxes 129,308 131,811 254,714 262,322
Operating Segments | Community Banking        
Income Statement Related Disclosures        
Net interest income (expense) 100,496 98,097 198,172 197,120
Provision for (reversal of) credit losses 11,164 9,733 21,878 19,281
Net interest income after provision for (reversal of) credit losses 89,332 88,364 176,294 177,839
Non-interest revenue:        
Service charges on deposit accounts 7,673 6,836 15,011 13,449
Fiduciary and asset management fees 0 0 0 0
Card fees 8,843 8,038 19,112 16,248
Brokerage revenue 0 0 0 0
Mortgage banking income 0 0 0 0
Capital markets income 1,394 2,588 2,630 3,490
Other non-interest revenue 933 689 1,844 1,643
Total non-interest revenue 18,843 18,151 38,597 34,830
Non-interest expense:        
Salaries and other personnel expense 26,545 26,811 54,898 55,064
Other operating expense 10,637 10,975 21,825 23,715
Total non-interest expense 37,182 37,786 76,723 78,779
Income (loss) before income taxes 70,993 68,729 138,168 133,890
Operating Segments | Consumer Banking        
Income Statement Related Disclosures        
Net interest income (expense) 134,210 135,550 263,868 274,176
Provision for (reversal of) credit losses 5,249 5,033 10,648 10,076
Net interest income after provision for (reversal of) credit losses 128,961 130,517 253,220 264,100
Non-interest revenue:        
Service charges on deposit accounts 10,590 10,488 20,673 20,440
Fiduciary and asset management fees 0 0 0 0
Card fees 6,842 6,923 13,225 13,063
Brokerage revenue 0 0 0 0
Mortgage banking income 0 0 0 0
Capital markets income 145 0 371 0
Other non-interest revenue 1,711 1,896 3,431 3,751
Total non-interest revenue 19,288 19,307 37,700 37,254
Non-interest expense:        
Salaries and other personnel expense 30,550 29,378 59,937 59,061
Other operating expense 17,948 21,626 35,808 44,067
Total non-interest expense 48,498 51,004 95,745 103,128
Income (loss) before income taxes 99,751 98,820 195,175 198,226
Operating Segments | Financial Management Services        
Income Statement Related Disclosures        
Net interest income (expense) 21,816 25,250 42,829 48,470
Provision for (reversal of) credit losses 3,966 3,991 8,041 7,787
Net interest income after provision for (reversal of) credit losses 17,850 21,259 34,788 40,683
Non-interest revenue:        
Service charges on deposit accounts 4 5 8 9
Fiduciary and asset management fees 20,332 19,728 40,249 38,741
Card fees 0 0 0 0
Brokerage revenue 20,748 20,457 41,107 43,164
Mortgage banking income 4,435 3,944 7,773 7,362
Capital markets income 0 0 361 553
Other non-interest revenue 1,714 1,705 3,346 2,880
Total non-interest revenue 47,233 45,839 92,844 92,709
Non-interest expense:        
Salaries and other personnel expense 31,407 30,639 62,744 63,558
Other operating expense 8,582 7,707 16,136 14,471
Total non-interest expense 39,989 38,346 78,880 78,029
Income (loss) before income taxes 25,094 28,752 48,752 55,363
Treasury and Corporate Other        
Income Statement Related Disclosures        
Net interest income (expense) 28,259 (5,473) 55,831 (31,162)
Provision for (reversal of) credit losses (47,524) (23,486) (88,716) (17,063)
Net interest income after provision for (reversal of) credit losses 75,783 18,013 144,547 (14,099)
Non-interest revenue:        
Service charges on deposit accounts 1,081 353 1,112 462
Fiduciary and asset management fees 0 0 0 0
Card fees 4,444 4,454 9,016 9,587
Brokerage revenue 0 0 0 0
Mortgage banking income 0 0 0 0
Capital markets income 4,551 4,414 5,692 6,391
Other non-interest revenue 21,830 (237,314) 35,968 (218,466)
Total non-interest revenue 31,906 (228,093) 51,788 (202,026)
Non-interest expense:        
Salaries and other personnel expense 80,151 70,677 150,825 142,491
Other operating expense 77,934 69,413 155,674 152,230
Total non-interest expense 158,085 140,090 306,499 294,721
Income (loss) before income taxes $ (50,396) (350,170) $ (110,164) (510,846)
Investment securities gains (losses), net   $ (256,700)   $ (256,700)