Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 62,452	$ 144,308
Other Comprehensive Income (Loss), before Tax [Abstract]
Net change in unrealized gain (loss)	(639,041)	(150,131)
Reclassification Adjustments Included in Earnings [Abstract]
Gain on available for sale securities, net	(937)	(467)
Other comprehensive loss before income taxes	(639,978)	(150,598)
Federal and state income taxes	(149,781)	(36,139)
Other comprehensive loss, net of income taxes	(490,197)	(114,459)
Comprehensive income (loss)	(427,745)	29,849
Comprehensive loss attributable to non-controlling interests	(36)	(1,752)
Comprehensive income (loss) attributable to BOK Financial Corp. shareholders	$ (427,709)	$ 31,601