Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 520,293	$ 616,325	$ 435,071
Other comprehensive income (loss), before income taxes: [Abstract]
Net change in unrealized gain (loss)	(1,227,414)	(341,369)	313,796
Reclassification adjustments included in earnings: [Abstract]
Interest revenue, Investment securities	42,514	0	0
Operating expense, Personnel	(3,483)	0	0
Loss (gain) on available for sale securities, net	971	(3,704)	(9,910)
Other comprehensive gain (loss), before income taxes	(1,187,412)	(345,073)	303,886
Federal and state income taxes	(278,086)	(81,576)	72,941
Other comprehensive gain (loss), net of income taxes	(909,326)	(263,497)	230,945
Comprehensive income (loss)	(389,033)	352,828	666,016
Comprehensive income (loss) attributable to non-controlling interests	20	(1,796)	41
Comprehensive income (loss) attributable to BOK Financial Corp. shareholders	$ (389,053)	$ 354,624	$ 665,975