Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 151,636	$ 132,858	$ 314,132	$ 195,310
Other Comprehensive Income (Loss), before Tax [Abstract]
Net change in unrealized gain (loss)	(160,408)	(242,536)	(36,363)	(881,577)
Reclassification Adjustments Included in Earnings [Abstract]
Interest revenue, Investment securities	16,033	2,455	32,084	2,455
Loss (gain) on available for sale securities, net	3,010	(1,188)	3,010	(2,125)
Other comprehensive income (loss) before income taxes	(141,365)	(241,269)	(1,269)	(881,247)
Federal and state income taxes	(33,247)	(56,467)	(1,552)	(206,248)
Other comprehensive income (loss), net of income taxes	(108,118)	(184,802)	283	(674,999)
Comprehensive income (loss)	43,518	(51,944)	314,415	(479,689)
Comprehensive income (loss) attributable to non-controlling interests	328	12	456	(24)
Comprehensive income (loss) attributable to BOK Financial Corp. shareholders	$ 43,190	$ (51,956)	$ 313,959	$ (479,665)