Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income		$ 109,757	$ 87,287	$ 209,196	$ 176,048
Other comprehensive income/(loss), net of tax:
Changes in unrealized gains/(losses) on available-for-sale securities	[1],[2],[3]	16,284	(11,856)	42,084	(24,927)
Changes in unrealized gains/(losses) on cash flow hedging instruments	[2],[3],[4]	(1,957)	712	(3,783)	3,418
Foreign currency translation adjustment	[2],[3]	(3,301)	(5,834)	(1,133)	(2,098)
Total other comprehensive income/(loss), net of tax		11,026	(16,978)	37,168	(23,607)
Comprehensive income		120,783	70,309	246,364	152,441
Net income applicable to non-controlling interests		672		904
Comprehensive income applicable to Stifel Financial Corp.		$ 120,111	$ 70,309	$ 245,460	$ 152,441

[1] Net of reclassifications to earnings of realized losses of $0.2 million for the three and six months ended June 30, 2019. There were no reclassifications to earnings during the six months ended June 30, 2018.

[2] Net of tax expense of $3.9 million and tax benefit of $6.0 million for the three months ended June 30, 2019 and 2018, respectively. Net of tax expense of $13.7 million and tax benefit of $8.3 million for the six months ended June 30, 2019 and 2018, respectively.

[3] The adoption of ASU 2018-02 on January 1, 2018 resulted in a reclassification of $3.1 million to retained earnings related to cash flow hedges and investment portfolio risk

[4] Amounts are net of reclassifications to earnings of gains of $0.8 million and $1.2 million for the three months ended June 30, 2019 and 2018, respectively. Amounts are net of reclassifications to earnings of gains of $2.3 million and $1.8 million for the six months ended June 30, 2019 and 2018, respectively.