Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income		$ 86,589	$ 99,439
Other comprehensive income/(loss), net of tax:
Changes in unrealized gains/(losses) on available-for-sale securities	[1],[2]	(73,227)	25,800
Changes in unrealized gains/(losses) on cash flow hedging instruments	[1],[3]	(1,706)	(1,826)
Foreign currency translation adjustment	[1]	(9,822)	2,168
Total other comprehensive income/(loss), net of tax	[1]	(84,755)	26,142
Comprehensive income		1,834	125,581
Net income applicable to non-controlling interests			232
Comprehensive income applicable to Stifel Financial Corp.		$ 1,834	$ 125,349

[1] Net of a tax benefit of $27.9 million and tax expense of $10.1 million for the three months ended March 31, 2020 and 2019, respectively.

[2] Net of reclassifications to earnings of realized losses of $0.5 million during the three months ended March 31, 2020. There were no reclassifications to earnings during the three months ended March 31, 2019.

[3] Amounts are net of reclassifications to earnings of losses of $0.3 million and gains of $1.5 million for the three months ended March 31, 2020 and 2019, respectively.