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Reportable Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Segment Reporting Information [Line Items] |  |  |  |
Net interest income from external sources | $ 308,119 | $ 300,896 | $ 897,712 | $ 975,505
Net interest income (expense) from internal sources | 0 | 0 | 0 | 0
Net interest income | 308,119 | 300,896 | 897,712 | 975,505
Net loans charged off and provisions for credit losses | 2,000 | 7,000 | 18,000 | 40,000
Net interest income after provision for credit losses | 306,119 | 293,896 | 879,712 | 935,505
Other operating revenue | 208,192 | 198,152 | 629,597 | 585,066
Other operating expense | 341,025 | 324,313 | 1,018,099 | 948,798
Net direct contribution | 173,286 | 167,735 | 491,210 | 571,773
Gain (loss) on financial instruments, net | 0 | 0 | 0 | 0
Change in fair value of mortgage servicing rights | 0 | 0 | 0 | 0
Gain (loss) on repossessed assets, net | 0 | 0 | 0 | 0
Corporate expense allocations | 0 | 0 | 0 | 0
Net income before taxes | 173,286 | 167,735 | 491,210 | 571,773
Federal and state income taxes | 33,313 | 33,256 | 103,811 | 123,162
Net income | 139,973 | 134,479 | 387,399 | 448,611
Net income attributable to non-controlling interests | (26) | (16) | (16) | 440
Net income attributable to BOK Financial Corp. shareholders | 139,999 | 134,495 | 387,415 | 448,171
Average assets | 51,157,035 | 49,319,552 | 50,794,596 | 47,748,933
Operating Segments [Member] | Commercial [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income from external sources | 277,777 | 298,313 | 843,882 | 886,283
Net interest income (expense) from internal sources | (70,167) | (84,170) | (228,521) | (223,305)
Net interest income | 207,610 | 214,143 | 615,361 | 662,978
Net loans charged off and provisions for credit losses | (1,329) | 4,904 | 8,965 | 10,980
Net interest income after provision for credit losses | 208,939 | 209,239 | 606,396 | 651,998
Other operating revenue | 59,320 | 59,153 | 163,862 | 184,826
Other operating expense | 78,387 | 83,256 | 224,596 | 233,949
Net direct contribution | 189,872 | 185,136 | 545,662 | 602,875
Gain (loss) on financial instruments, net | 162 | (11) | 497 | 162
Change in fair value of mortgage servicing rights | 0 | 0 | 0 | 0
Gain (loss) on repossessed assets, net | 0 | (268) | 0 | 999
Corporate expense allocations | 17,371 | 17,838 | 53,149 | 56,960
Net income before taxes | 172,663 | 167,019 | 493,010 | 547,076
Federal and state income taxes | 42,809 | 41,081 | 121,780 | 133,691
Net income | 129,854 | 125,938 | 371,230 | 413,385
Net income attributable to non-controlling interests | 0 | 0 | 0 | 0
Net income attributable to BOK Financial Corp. shareholders | 129,854 | 125,938 | 371,230 | 413,385
Average assets | 30,657,285 | 28,867,129 | 30,258,034 | 28,402,890
Operating Segments [Member] | Consumer [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income from external sources | 5,955 | 11,386 | 19,497 | 50,360
Net interest income (expense) from internal sources | 59,308 | 54,992 | 175,065 | 151,315
Net interest income | 65,263 | 66,378 | 194,562 | 201,675
Net loans charged off and provisions for credit losses | 1,779 | (73) | 4,834 | 2,240
Net interest income after provision for credit losses | 63,484 | 66,451 | 189,728 | 199,435
Other operating revenue | 36,699 | 30,716 | 109,158 | 93,603
Other operating expense | 57,779 | 54,497 | 166,354 | 157,035
Net direct contribution | 42,404 | 42,670 | 132,532 | 136,003
Gain (loss) on financial instruments, net | 12,121 | (9,183) | (1,119) | (24,113)
Change in fair value of mortgage servicing rights | (16,453) | 8,039 | (2,023) | 11,241
Gain (loss) on repossessed assets, net | 0 | 11 | 116 | 25
Corporate expense allocations | 13,298 | 11,920 | 40,862 | 35,860
Net income before taxes | 24,774 | 29,617 | 88,644 | 87,296
Federal and state income taxes | 5,826 | 6,966 | 20,848 | 20,532
Net income | 18,948 | 22,651 | 67,796 | 66,764
Net income attributable to non-controlling interests | 0 | 0 | 0 | 0
Net income attributable to BOK Financial Corp. shareholders | 18,948 | 22,651 | 67,796 | 66,764
Average assets | 9,804,990 | 9,379,478 | 9,609,862 | 9,635,204
Operating Segments [Member] | Wealth Management [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income from external sources | 10,640 | 7,622 | 20,251 | 32,977
Net interest income (expense) from internal sources | 22,545 | 15,045 | 70,833 | 59,131
Net interest income | 33,185 | 22,667 | 91,084 | 92,108
Net loans charged off and provisions for credit losses | (159) | 9 | (174) | (60)
Net interest income after provision for credit losses | 33,344 | 22,658 | 91,258 | 92,168
Other operating revenue | 112,457 | 123,614 | 344,369 | 355,568
Other operating expense | 93,539 | 89,108 | 283,041 | 255,450
Net direct contribution | 52,262 | 57,164 | 152,586 | 192,286
Gain (loss) on financial instruments, net | 0 | 0 | 0 | 0
Change in fair value of mortgage servicing rights | 0 | 0 | 0 | 0
Gain (loss) on repossessed assets, net | 0 | 0 | 0 | 0
Corporate expense allocations | 13,458 | 14,562 | 44,721 | 39,871
Net income before taxes | 38,804 | 42,602 | 107,865 | 152,415
Federal and state income taxes | 9,188 | 10,083 | 25,524 | 36,010
Net income | 29,616 | 32,519 | 82,341 | 116,405
Net income attributable to non-controlling interests | 0 | 0 | 0 | 0
Net income attributable to BOK Financial Corp. shareholders | 29,616 | 32,519 | 82,341 | 116,405
Average assets | 16,344,623 | 14,740,641 | 16,185,931 | 13,128,925
Funds Management and Other [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income from external sources | 13,747 | (16,425) | 14,082 | 5,885
Net interest income (expense) from internal sources | (11,686) | 14,133 | (17,377) | 12,859
Net interest income | 2,061 | (2,292) | (3,295) | 18,744
Net loans charged off and provisions for credit losses | 1,709 | 2,160 | 4,375 | 26,840
Net interest income after provision for credit losses | 352 | (4,452) | (7,670) | (8,096)
Other operating revenue | (284) | (15,331) | 12,208 | (48,931)
Other operating expense | 111,320 | 97,452 | 344,108 | 302,364
Net direct contribution | (111,252) | (117,235) | (339,570) | (359,391)
Gain (loss) on financial instruments, net | (12,283) | 9,194 | 622 | 23,951
Change in fair value of mortgage servicing rights | 16,453 | (8,039) | 2,023 | (11,241)
Gain (loss) on repossessed assets, net | 0 | 257 | (116) | (1,024)
Corporate expense allocations | (44,127) | (44,320) | (138,732) | (132,691)
Net income before taxes | (62,955) | (71,503) | (198,309) | (215,014)
Federal and state income taxes | (24,510) | (24,874) | (64,341) | (67,071)
Net income | (38,445) | (46,629) | (133,968) | (147,943)
Net income attributable to non-controlling interests | (26) | (16) | (16) | 440
Net income attributable to BOK Financial Corp. shareholders | (38,419) | (46,613) | (133,952) | (148,383)
Average assets | $ (5,649,863) | $ (3,667,696) | $ (5,259,231) | $ (3,418,086)

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