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Reportable Segments (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Segment Reporting Information [Line Items] |  |
Net interest revenue from external sources | $ 293,572 | $ 352,348
Net interest revenue (expense) from internal sources | 0 | 0
Net interest revenue | 293,572 | 352,348
Net loans charged off and provisions for credit losses | 8,000 | 16,000
Net interest revenue after provision for credit losses | 285,572 | 336,348
Other operating revenue | 161,701 | 177,865
Other operating expense | 340,384 | 305,812
Net direct contribution | 106,889 | 208,401
Gain (loss) on financial instruments, net | 0 | 0
Change in fair value of mortgage servicing rights | 0 | 0
Gain (loss) on repossessed assets, net | 0 | 0
Corporate expense allocations | 0 | 0
Net income before taxes | 106,889 | 208,401
Federal and state income taxes | 23,195 | 45,905
Net income | 83,694 | 162,496
Net income (loss) attributable to non-controlling interests | (9) | 128
Net income attributable to BOK Financial Corp. shareholders | 83,703 | 162,368
Average assets | 50,027,572 | 45,982,468
Operating Segments [Member] | Commercial [Member] |  |
Segment Reporting Information [Line Items] |  |
Net interest revenue from external sources | 282,447 | 287,988
Net interest revenue (expense) from internal sources | (37,326) | (3,932)
Net interest revenue | 245,121 | 284,056
Net loans charged off and provisions for credit losses | 4,160 | 76
Net interest revenue after provision for credit losses | 240,961 | 283,980
Other operating revenue | 50,006 | 56,845
Other operating expense | 70,095 | 73,134
Net direct contribution | 220,872 | 267,691
Gain (loss) on financial instruments, net | 167 | (58)
Change in fair value of mortgage servicing rights | 0 | 0
Gain (loss) on repossessed assets, net | 0 | 859
Corporate expense allocations | 18,397 | 17,718
Net income before taxes | 202,642 | 250,774
Federal and state income taxes | 49,392 | 60,543
Net income | 153,250 | 190,231
Net income (loss) attributable to non-controlling interests | 0 | 0
Net income attributable to BOK Financial Corp. shareholders | 153,250 | 190,231
Average assets | 29,806,817 | 28,162,934
Operating Segments [Member] | Consumer [Member] |  |
Segment Reporting Information [Line Items] |  |
Net interest revenue from external sources | 7,350 | 21,146
Net interest revenue (expense) from internal sources | 94,799 | 88,235
Net interest revenue | 102,149 | 109,381
Net loans charged off and provisions for credit losses | 1,808 | 1,184
Net interest revenue after provision for credit losses | 100,341 | 108,197
Other operating revenue | 36,207 | 30,610
Other operating expense | 53,447 | 50,198
Net direct contribution | 83,101 | 88,609
Gain (loss) on financial instruments, net | (9,663) | (4,673)
Change in fair value of mortgage servicing rights | 10,977 | (6,059)
Gain (loss) on repossessed assets, net | 107 | 14
Corporate expense allocations | 14,172 | 11,622
Net income before taxes | 70,350 | 66,269
Federal and state income taxes | 16,546 | 15,586
Net income | 53,804 | 50,683
Net income (loss) attributable to non-controlling interests | 0 | 0
Net income attributable to BOK Financial Corp. shareholders | 53,804 | 50,683
Average assets | 9,391,981 | 9,934,511
Operating Segments [Member] | Wealth Management [Member] |  |
Segment Reporting Information [Line Items] |  |
Net interest revenue from external sources | 6,999 | 20,940
Net interest revenue (expense) from internal sources | 33,110 | 33,166
Net interest revenue | 40,109 | 54,106
Net loans charged off and provisions for credit losses | (15) | (24)
Net interest revenue after provision for credit losses | 40,124 | 54,130
Other operating revenue | 118,704 | 108,911
Other operating expense | 99,535 | 82,039
Net direct contribution | 59,293 | 81,002
Gain (loss) on financial instruments, net | 0 | 0
Change in fair value of mortgage servicing rights | 0 | 0
Gain (loss) on repossessed assets, net | 0 | 0
Corporate expense allocations | 14,558 | 12,360
Net income before taxes | 44,735 | 68,642
Federal and state income taxes | 10,570 | 16,195
Net income | 34,165 | 52,447
Net income (loss) attributable to non-controlling interests | 0 | 0
Net income attributable to BOK Financial Corp. shareholders | 34,165 | 52,447
Average assets | 15,759,328 | 11,663,096
Funds Management and Other [Member] |  |
Segment Reporting Information [Line Items] |  |
Net interest revenue from external sources | (3,224) | 22,274
Net interest revenue (expense) from internal sources | (90,583) | (117,469)
Net interest revenue | (93,807) | (95,195)
Net loans charged off and provisions for credit losses | 2,047 | 14,764
Net interest revenue after provision for credit losses | (95,854) | (109,959)
Other operating revenue | (43,216) | (18,501)
Other operating expense | 117,307 | 100,441
Net direct contribution | (256,377) | (228,901)
Gain (loss) on financial instruments, net | 9,496 | 4,731
Change in fair value of mortgage servicing rights | (10,977) | 6,059
Gain (loss) on repossessed assets, net | (107) | (873)
Corporate expense allocations | (47,127) | (41,700)
Net income before taxes | (210,838) | (177,284)
Federal and state income taxes | (53,313) | (46,419)
Net income | (157,525) | (130,865)
Net income (loss) attributable to non-controlling interests | (9) | 128
Net income attributable to BOK Financial Corp. shareholders | (157,516) | (130,993)
Average assets | $ (4,930,554) | $ (3,778,073)

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