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v3.26.1

Business Segment Reporting - Schedule of Business Segment Financial Results (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2026 | Mar. 31, 2025
Segment Reporting Information [Line Items] |  |
Net interest income | $ 534,366 | $ 397,639
Provision for credit losses | 27,000 | 86,000
Noninterest income | 204,793 | 166,198
Salaries and employee benefits | 219,681 | 221,398
Processing fees | 42,059 | 40,850
Bankcard | 11,841 | 12,795
Amortization of other intangible assets | 23,460 | 17,482
Noninterest expense | 380,883 | 384,787
Income before income taxes | 331,276 | 93,050
Income tax expense (benefit) | 69,838 | 11,717
Net Income (Loss) | 261,438 | 81,333
Operating Segments [Member] |  |
Segment Reporting Information [Line Items] |  |
Net interest income | 534,366 | 397,639
Provision for credit losses | 27,000 | 86,000
Noninterest income | 204,793 | 166,198
Salaries and employee benefits | 146,987 | 136,771
Processing fees | 19,080 | 18,756
Bankcard | 11,870 | 12,795
Amortization of other intangible assets | 2,047 | 1,889
Allocated technology, service, overhead | 163,916 | 185,834
Other segment items | 36,983 | 28,742
Noninterest expense | 380,883 | 384,787
Income before income taxes | 331,276 | 93,050
Income tax expense (benefit) | 69,838 | 11,717
Net Income (Loss) | 261,438 | 81,333
Average assets | 70,428,000 | 59,977,000
Commercial Banking [Member] | Operating Segments [Member] |  |
Segment Reporting Information [Line Items] |  |
Net interest income | 365,342 | 273,916
Provision for credit losses | 23,777 | 66,751
Noninterest income | 46,289 | 37,218
Salaries and employee benefits | 56,426 | 53,586
Processing fees | 4,028 | 3,664
Bankcard | 2,848 | 3,173
Allocated technology, service, overhead | 85,636 | 101,125
Other segment items | 16,514 | 11,463
Noninterest expense | 165,452 | 173,011
Income before income taxes | 222,402 | 71,372
Income tax expense (benefit) | 46,886 | 8,987
Net Income (Loss) | 175,516 | 62,385
Average assets | 34,938,000 | 30,029,000
Institutional Banking [Member] | Operating Segments [Member] |  |
Segment Reporting Information [Line Items] |  |
Net interest income | 77,287 | 61,159
Provision for credit losses | 497 | 435
Noninterest income | 121,829 | 103,797
Salaries and employee benefits | 50,637 | 47,186
Processing fees | 10,670 | 10,649
Bankcard | 6,512 | 6,037
Amortization of other intangible assets | 1,972 | 1,786
Allocated technology, service, overhead | 33,876 | 32,245
Other segment items | 9,264 | 9,365
Noninterest expense | 112,931 | 107,268
Income before income taxes | 85,688 | 57,253
Income tax expense (benefit) | 18,064 | 7,210
Net Income (Loss) | 67,624 | 50,043
Average assets | 21,498,000 | 18,324,000
Personal Banking [Member] | Operating Segments [Member] |  |
Segment Reporting Information [Line Items] |  |
Net interest income | 91,737 | 62,564
Provision for credit losses | 2,726 | 18,814
Noninterest income | 36,675 | 25,183
Salaries and employee benefits | 39,924 | 35,999
Processing fees | 4,382 | 4,443
Bankcard | 2,510 | 3,585
Amortization of other intangible assets | 75 | 103
Allocated technology, service, overhead | 44,404 | 52,464
Other segment items | 11,205 | 7,914
Noninterest expense | 102,500 | 104,508
Income before income taxes | 23,186 | (35,575)
Income tax expense (benefit) | 4,888 | (4,480)
Net Income (Loss) | 18,298 | (31,095)
Average assets | $ 13,992,000 | $ 11,624,000

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