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Reportable Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net interest income from external sources | $ 337,646 |  | $ 308,119 |  | $ 982,063 |  | $ 897,712 |
Net interest income (expense) from internal sources | 0 |  | 0 |  | 0 |  | 0 |
Net interest income | 337,646 |  | 308,119 |  | 982,063 |  | 897,712 |
Provision for credit losses | 2,000 |  | 2,000 |  | 2,000 |  | 18,000 |
Net interest income after provision for credit losses | 335,646 |  | 306,119 |  | 980,063 |  | 879,712 |
Noninterest Income | 210,709 |  | 208,192 |  | 603,848 |  | 629,597 |
Personnel | 226,347 |  | 206,821 |  | 655,243 |  | 600,564 |
Other Cost and Expense, Operating | 143,423 | [1] | 134,204 | [2] | 416,559 | [3] | 417,535 | [4]
Noninterest Expense | 369,770 |  | 341,025 |  | 1,071,802 |  | 1,018,099 |
Corporate Expense Allocations | 0 | [5] | 0 | [6] | 0 | [7] | 0 | [8]
Net income before taxes | 176,585 |  | 173,286 |  | 512,109 |  | 491,210 |
Assets, Average Outstanding | 51,692,076 |  | 51,157,035 |  | 51,657,894 |  | 50,794,596 |
Operating Segments [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net interest income from external sources | 272,232 |  | 285,582 |  | 801,219 |  | 858,137 |
Net interest income (expense) from internal sources | 9,042 |  | 20,476 |  | 38,851 |  | 42,870 |
Net interest income | 281,274 |  | 306,058 |  | 840,070 |  | 901,007 |
Provision for credit losses | 4,019 |  | 291 |  | 6,716 |  | 13,625 |
Net interest income after provision for credit losses | 277,255 |  | 305,767 |  | 833,354 |  | 887,382 |
Noninterest Income | 209,081 |  | 204,306 |  | 606,243 |  | 614,860 |
Personnel | 150,351 |  | 139,880 |  | 434,252 |  | 409,011 |
Other Cost and Expense, Operating | 97,901 | [1] | 90,668 | [2] | 271,540 | [3] | 267,530 | [4]
Noninterest Expense | 248,252 |  | 230,548 |  | 705,792 |  | 676,541 |
Corporate Expense Allocations | 47,171 | [5] | 43,766 | [6] | 142,185 | [7] | 138,102 | [8]
Net income before taxes | 190,913 |  | 235,759 |  | 591,620 |  | 687,599 |
Assets, Average Outstanding | 41,360,101 |  | 40,620,333 |  | 41,178,228 |  | 40,672,641 |
Operating Segments [Member] | Commercial [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net interest income from external sources | 239,835 |  | 273,934 |  | 707,023 |  | 834,275 |
Net interest income (expense) from internal sources | (60,638) |  | (66,324) |  | (173,742) |  | (218,914) |
Net interest income | 179,197 |  | 207,610 |  | 533,281 |  | 615,361 |
Provision for credit losses | 2,609 |  | (1,329) |  | 2,786 |  | 8,965 |
Net interest income after provision for credit losses | 176,588 |  | 208,939 |  | 530,495 |  | 606,396 |
Noninterest Income | 61,745 |  | 59,482 |  | 181,698 |  | 164,359 |
Personnel | 51,638 |  | 48,740 |  | 150,621 |  | 141,401 |
Other Cost and Expense, Operating | 29,601 | [1] | 30,490 | [2] | 87,899 | [3] | 85,745 | [4]
Noninterest Expense | 81,239 |  | 79,230 |  | 238,520 |  | 227,146 |
Corporate Expense Allocations | 17,277 | [5] | 17,010 | [6] | 53,492 | [7] | 52,519 | [8]
Net income before taxes | 139,817 |  | 172,181 |  | 420,181 |  | 491,090 |
Assets, Average Outstanding | 21,722,491 |  | 21,881,574 |  | 21,481,669 |  | 21,831,765 |
Operating Segments [Member] | Consumer [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net interest income from external sources | 16,141 |  | 5,955 |  | 38,344 |  | 19,291 |
Net interest income (expense) from internal sources | 42,310 |  | 59,308 |  | 135,473 |  | 175,271 |
Net interest income | 58,451 |  | 65,263 |  | 173,817 |  | 194,562 |
Provision for credit losses | 1,413 |  | 1,779 |  | 3,948 |  | 4,834 |
Net interest income after provision for credit losses | 57,038 |  | 63,484 |  | 169,869 |  | 189,728 |
Noninterest Income | 35,820 |  | 32,367 |  | 113,043 |  | 106,132 |
Personnel | 25,681 |  | 24,616 |  | 77,045 |  | 73,868 |
Other Cost and Expense, Operating | 38,361 | [1] | 33,163 | [2] | 99,709 | [3] | 92,486 | [4]
Noninterest Expense | 64,042 |  | 57,779 |  | 176,754 |  | 166,354 |
Corporate Expense Allocations | 14,326 | [5] | 13,298 | [6] | 44,800 | [7] | 40,862 | [8]
Net income before taxes | 14,490 |  | 24,774 |  | 61,358 |  | 88,644 |
Assets, Average Outstanding | 8,372,125 |  | 8,172,256 |  | 8,295,564 |  | 8,069,881 |
Operating Segments [Member] | Wealth Management [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net interest income from external sources | 16,256 |  | 5,693 |  | 55,852 |  | 4,571 |
Net interest income (expense) from internal sources | 27,370 |  | 27,492 |  | 77,120 |  | 86,513 |
Net interest income | 43,626 |  | 33,185 |  | 132,972 |  | 91,084 |
Provision for credit losses | (3) |  | (159) |  | (18) |  | (174) |
Net interest income after provision for credit losses | 43,629 |  | 33,344 |  | 132,990 |  | 91,258 |
Noninterest Income | 111,516 |  | 112,457 |  | 311,502 |  | 344,369 |
Personnel | 73,032 |  | 66,524 |  | 206,586 |  | 193,742 |
Other Cost and Expense, Operating | 29,939 | [1] | 27,015 | [2] | 83,932 | [3] | 89,299 | [4]
Noninterest Expense | 102,971 |  | 93,539 |  | 290,518 |  | 283,041 |
Corporate Expense Allocations | 15,568 | [5] | 13,458 | [6] | 43,893 | [7] | 44,721 | [8]
Net income before taxes | 36,606 |  | 38,804 |  | 110,081 |  | 107,865 |
Assets, Average Outstanding | 11,265,485 |  | 10,566,503 |  | 11,400,995 |  | 10,770,995 |
Funds Management and Other [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net interest income from external sources | 65,414 |  | 22,537 |  | 180,844 |  | 39,575 |
Net interest income (expense) from internal sources | (9,042) |  | (20,476) |  | (38,851) |  | (42,870) |
Net interest income | 56,372 |  | 2,061 |  | 141,993 |  | (3,295) |
Provision for credit losses | (2,019) |  | 1,709 |  | (4,716) |  | 4,375 |
Net interest income after provision for credit losses | 58,391 |  | 352 |  | 146,709 |  | (7,670) |
Noninterest Income | 1,628 |  | 3,886 |  | (2,395) |  | 14,737 |
Personnel | 75,996 |  | 66,941 |  | 220,991 |  | 191,553 |
Other Cost and Expense, Operating | 45,522 | [1] | 43,536 | [2] | 145,019 | [3] | 150,005 | [4]
Noninterest Expense | 121,518 |  | 110,477 |  | 366,010 |  | 341,558 |
Corporate Expense Allocations | (47,171) | [5] | (43,766) | [6] | (142,185) | [7] | (138,102) | [8]
Net income before taxes | (14,328) |  | (62,473) |  | (79,511) |  | (196,389) |
Assets, Average Outstanding | $ 10,331,975 |  | $ 10,536,702 |  | $ 10,479,666 |  | $ 10,121,955 |
[1] | Non-personnel expense includes other segment items comprised of Business promotion, Charitable contributions to BOKF Foundation, Professional fees and services, Net occupancy and equipment, FDIC and other insurance, Data processing and communications, Printing, postage, and supplies, Amortization of intangible assets, Mortgage banking costs, and other miscellaneous expenses.
[2] | Non-personnel expense includes other segment items comprised of Business promotion, Charitable contributions to BOKF Foundation, Professional fees and services, Net occupancy and equipment, FDIC and other insurance, Data processing and communications, Printing, postage, and supplies, Amortization of intangible assets, Mortgage banking costs, and other miscellaneous expenses.
[3] | Non-personnel expense includes other segment items comprised of Business promotion, Charitable contributions to BOKF Foundation, Professional fees and services, Net occupancy and equipment, FDIC and other insurance, Data processing and communications, Printing, postage, and supplies, Amortization of intangible assets, Mortgage banking costs, and other miscellaneous expenses.
[4] | Non-personnel expense includes other segment items comprised of Business promotion, Charitable contributions to BOKF Foundation, Professional fees and services, Net occupancy and equipment, FDIC and other insurance, Data processing and communications, Printing, postage, and supplies, Amortization of intangible assets, Mortgage banking costs, and other miscellaneous expenses.
[5] | Corporate allocations include centrally managed operational and administrative expenses that are allocated to segments.
[6] | Corporate allocations include centrally managed operational and administrative expenses that are allocated to segments. Reportable segments reconciliation to the Consolidated Financial Statements for the nine months ended September 30, 2024 is as follows (in thousands):
[7] | Corporate allocations include centrally managed operational and administrative expenses that are allocated to segments.
[8] | Corporate allocations include centrally managed operational and administrative expenses that are allocated to segments.

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