Regulatory Capital Requirements (Tables)

12 Months Ended

Dec. 31, 2020

Regulatory Capital Requirements [Abstract]

Schedule Of Total Risk-Based, Tier 1 Risk-Based, And Tier 1 Leverage Ratios

	Actual					For Capital Adequacy Purposes					To Be Well Capitalized Under Prompt Corrective Action Provisions
Stifel Financial Corp.	Amount		Ratio			Amount		Ratio			Amount		Ratio
Common equity tier 1 capital	$	2,391,296		16.5	%	$	652,042		4.5	%	$	941,839		6.5	%
Tier 1 capital		2,926,296		20.2	%		869,390		6.0	%		1,159,186		8.0	%
Total capital		3,080,234		21.3	%		1,159,186		8.0	%		1,448,983		10.0	%
Tier 1 leverage		2,926,296		11.9	%		984,215		4.0	%		1,230,269		5.0	%

	Actual					For Capital Adequacy Purposes					To Be Well Capitalized Under Prompt Corrective Action Provisions
Stifel Bank & Trust	Amount		Ratio			Amount		Ratio			Amount		Ratio
Common equity tier 1 capital	$	1,029,659		11.4	%	$	404,757		4.5	%	$	584,648		6.5	%
Tier 1 capital		1,029,659		11.4	%		539,675		6.0	%		719,567		8.0	%
Total capital		1,142,093		12.7	%		719,567		8.0	%		899,459		10.0	%
Tier 1 leverage		1,029,659		7.1	%		576,387		4.0	%		720,483		5.0	%

	Actual					For Capital Adequacy Purposes					To Be Well Capitalized Under Prompt Corrective Action Provisions
Stifel Bank	Amount		Ratio			Amount		Ratio			Amount		Ratio
Common equity tier 1 capital	$	209,795		16.5	%	$	57,122		4.5	%	$	82,510		6.5	%
Tier 1 capital		209,795		16.5	%		76,163		6.0	%		101,550		8.0	%
Total capital		224,281		17.7	%		101,550		8.0	%		126,938		10.0	%
Tier 1 leverage		209,795		7.3	%		114,655		4.0	%		143,319		5.0	%