Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income		$ 824,858	$ 503,472	$ 449,986
Other comprehensive income/(loss), net of tax:
Changes in unrealized gains/(losses) on available-for-sale securities, net of tax	[1],[2]	(19,385)	33,133	60,288
Changes in unrealized losses on cash flow hedging instruments, net of tax	[2]		(651)	(4,402)
Foreign currency translation adjustment, net of tax	[2]	(3,536)	6,862	4,932
Total other comprehensive income/(loss), net of tax	[2]	(22,921)	39,344	60,818
Comprehensive income		801,937	542,816	510,804
Net income applicable to non-controlling interest				1,590
Comprehensive income applicable to Stifel Financial Corp.		$ 801,937	$ 542,816	$ 509,214

[1] As part of the adoption of ASU 2019-04, in the third quarter of 2019, the Company made a one-time election to transfer a portion of its held-to-maturity securities to available-for-sale. The transfer resulted in a net of tax increase to comprehensive income of $17.9 million.

[2] Net of a tax benefit of $6.7 million, tax expense of $11.5 million, and tax expense of $20.2 million for the years ended December 31, 2021, 2020, and 2019, respectively.