v3.26.1
Operating Segments - Schedule of Financial Data for Business Segments (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting [Line Items]        
Average interest earning assets $ 61,057,362 $ 57,553,624 $ 60,391,821 $ 57,224,486
Interest income 829,375 805,012 1,632,099 1,589,764
Interest expense 342,351 372,604 673,550 737,251
Net interest income 487,024 432,408 958,549 852,513
Provision (credit) for credit losses 29,164 37,799 50,420 100,460
Net interest income after provision for credit losses 457,860 394,609 908,129 752,053
Non-interest income 73,711 62,604 142,547 120,898
Salary and employee benefits expense 150,432 145,422 306,147 288,040
Net occupancy expense 27,179 25,483 54,361 51,371
Technology, furniture and equipment expense 33,247 30,667 65,125 60,563
FDIC insurance assessment 11,691 12,192 22,167 25,059
Professional and legal fees 29,533 19,970 54,675 35,640
Loss on extinguishment of debt 0 922 0 922
Other segment items 59,041 49,466 118,574 99,145
Non-interest expense 311,123 284,122 621,049 560,740
Income Before Income Taxes $ 220,448 $ 173,091 $ 429,627 $ 312,211
Return on average interest earning assets (pre-tax) 1.44% 1.20% 1.42% 1.09%
Net interest margin 3.19% 3.01% 3.17% 2.98%
Treasury and Corporate Other        
Segment Reporting [Line Items]        
Average interest earning assets $ 9,173,189 $ 8,520,987 $ 9,312,571 $ 8,379,663
Interest income 94,657 85,974 189,995 168,367
Interest expense 51,435 55,165 103,863 107,960
Net interest income 43,222 30,809 86,132 60,407
Provision (credit) for credit losses (2) 4 10 (10)
Net interest income after provision for credit losses 43,224 30,805 86,122 60,417
Non-interest income 5,730 5,413 12,150 10,351
Salary and employee benefits expense 15,945 13,955 36,122 21,609
Net occupancy expense 4,049 3,751 8,330 7,477
Technology, furniture and equipment expense 4,308 3,932 8,655 7,738
FDIC insurance assessment 0 0 0 0
Professional and legal fees 4,126 2,435 8,589 4,263
Loss on extinguishment of debt   922   922
Other segment items 21,774 20,108 45,026 40,058
Non-interest expense 50,202 45,103 106,722 82,067
Income Before Income Taxes $ (1,248) $ (8,885) $ (8,450) $ (11,299)
Return on average interest earning assets (pre-tax) (0.05%) (0.42%) (0.18%) (0.27%)
Net interest margin 1.89% 1.45% 1.85% 1.44%
Consumer Banking | Operating Segments        
Segment Reporting [Line Items]        
Average interest earning assets $ 11,449,774 $ 10,428,625 $ 11,358,861 $ 10,428,621
Interest income 138,739 130,616 274,302 253,079
Interest expense 64,199 68,915 126,685 134,357
Net interest income 74,540 61,701 147,617 118,722
Provision (credit) for credit losses 1,291 717 2,497 (8,016)
Net interest income after provision for credit losses 73,249 60,984 145,120 126,738
Non-interest income 34,409 32,192 65,602 66,546
Salary and employee benefits expense 33,216 32,294 65,925 64,268
Net occupancy expense 5,178 4,772 10,371 9,477
Technology, furniture and equipment expense 6,884 6,266 13,677 12,503
FDIC insurance assessment 2,581 2,650 4,929 5,350
Professional and legal fees 5,791 3,344 10,373 6,243
Loss on extinguishment of debt   0   0
Other segment items 22,274 12,021 36,261 26,307
Non-interest expense 75,924 61,347 141,536 124,148
Income Before Income Taxes $ 31,734 $ 31,829 $ 69,186 $ 69,136
Return on average interest earning assets (pre-tax) 1.11% 1.22% 1.22% 1.33%
Net interest margin 2.61% 2.37% 2.60% 2.27%
Commercial Banking | Operating Segments        
Segment Reporting [Line Items]        
Average interest earning assets $ 40,434,399 $ 38,604,012 $ 39,720,389 $ 38,416,202
Interest income 595,979 588,422 1,167,802 1,168,318
Interest expense 226,717 248,524 443,002 494,934
Net interest income 369,262 339,898 724,800 673,384
Provision (credit) for credit losses 27,875 37,078 47,913 108,486
Net interest income after provision for credit losses 341,387 302,820 676,887 564,898
Non-interest income 33,572 24,999 64,795 44,001
Salary and employee benefits expense 101,271 99,173 204,100 202,163
Net occupancy expense 17,952 16,960 35,660 34,417
Technology, furniture and equipment expense 22,055 20,469 42,793 40,322
FDIC insurance assessment 9,110 9,542 17,238 19,709
Professional and legal fees 19,616 14,191 35,713 25,134
Loss on extinguishment of debt   0   0
Other segment items 14,993 17,337 37,287 32,780
Non-interest expense 184,997 177,672 372,791 354,525
Income Before Income Taxes $ 189,962 $ 150,147 $ 368,891 $ 254,374
Return on average interest earning assets (pre-tax) 1.88% 1.56% 1.86% 1.32%
Net interest margin 3.66% 3.52% 3.65% 3.50%