Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues:
Revenue from contracts with customers		$ 3,615,636	$ 2,678,888
Principal transactions		581,164	588,303	$ 404,751
Interest		548,400	523,832	724,882
Other income		72,125	75,345	52,378
Total revenues		4,783,086	3,817,839	3,514,961
Interest expense		45,998	65,778	177,931
Net revenues	[1]	4,737,088	3,752,061	3,337,030
Non-interest expenses:
Compensation and benefits		2,820,301	2,279,335	1,978,116
Occupancy and equipment rental		290,243	274,664	242,893
Communications and office supplies		165,490	164,736	147,428
Commissions and floor brokerage		59,681	55,960	44,011
Provision for credit losses		(11,502)	33,925	9,977
Other operating expenses		345,794	292,281	315,467
Total non-interest expenses		3,670,007	3,100,901	2,737,892
Income before income tax expense		1,067,081	651,160	599,138
Provision for income taxes		242,223	147,688	149,152
Net income		824,858	503,472	449,986
Net income applicable to non-controlling interests				1,590
Net income applicable to Stifel Financial Corp.		824,858	503,472	448,396
Preferred dividends		35,587	27,261	17,319
Net income available to common shareholders		$ 789,271	$ 476,211	$ 431,077
Earnings per common share:
Basic		$ 7.34	$ 4.49	$ 3.99
Diluted		6.66	4.16	3.66
Cash dividends declared per common share		$ 0.60	$ 0.45	$ 0.40
Weighted-average number of common shares outstanding:
Basic		107,536	106,174	107,997
Diluted		118,530	114,573	117,878
Commissions [Member]
Revenues:
Revenue from contracts with customers		$ 809,500	$ 760,627	$ 667,494
Investment Banking [Member]
Revenues:
Revenue from contracts with customers		1,565,381	952,308	817,421
Asset Management [Member]
Revenues:
Revenue from contracts with customers		$ 1,206,516	$ 917,424	$ 848,035

[1] No individual client accounted for more than 10 percent of total net revenues for the years ended December 31, 2021, 2020, and 2019.