Regulatory Capital Requirements (Tables)

6 Months Ended

Jun. 30, 2025

Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]

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

The amounts and ratios for Stifel Financial Corp., Stifel Bank & Trust, and Stifel Bank as of June 30, 2025 are represented in the tables below (in thousands, except 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	$	3,431,336		14.5	%	$	1,061,463		4.5	%	$	1,533,224		6.5	%
Tier 1 capital		4,116,336		17.5	%		1,415,284		6.0	%		1,887,046		8.0	%
Total capital		4,340,889		18.4	%		1,887,046		8.0	%		2,358,807		10.0	%
Tier 1 leverage		4,116,336		10.8	%		1,520,531		4.0	%		1,900,664		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	$	1,337,013		11.5	%	$	523,994		4.5	%	$	756,880		6.5	%
Tier 1 capital		1,337,013		11.5	%		698,658		6.0	%		931,544		8.0	%
Total capital		1,454,352		12.5	%		931,544		8.0	%		1,164,430		10.0	%
Tier 1 leverage		1,337,013		7.0	%		760,447		4.0	%		950,559		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	$	810,648		12.2	%	$	298,978		4.5	%	$	431,857		6.5	%
Tier 1 capital		810,648		12.2	%		398,638		6.0	%		531,517		8.0	%
Total capital		859,871		12.9	%		531,517		8.0	%		664,396		10.0	%
Tier 1 leverage		810,648		7.1	%		454,900		4.0	%		568,625		5.0	%

The amounts and ratios for Stifel Financial Corp., Stifel Bank & Trust, and Stifel Bank as of December 31, 2024, are represented in the tables below (in thousands, except 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	$	3,645,786		15.4	%	$	1,068,371		4.5	%	$	1,543,202		6.5	%
Tier 1 capital		4,330,786		18.2	%		1,424,494		6.0	%		1,899,326		8.0	%
Total capital		4,556,023		19.2	%		1,899,326		8.0	%		2,374,157		10.0	%
Tier 1 leverage		4,330,786		11.4	%		1,522,940		4.0	%		1,903,675		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	$	1,366,711		11.1	%	$	555,063		4.5	%	$	801,758		6.5	%
Tier 1 capital		1,366,711		11.1	%		740,084		6.0	%		986,778		8.0	%
Total capital		1,491,850		12.1	%		986,778		8.0	%		1,233,473		10.0	%
Tier 1 leverage		1,366,711		7.1	%		774,495		4.0	%		968,118		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	$	768,652		13.0	%	$	266,427		4.5	%	$	384,839		6.5	%
Tier 1 capital		768,652		13.0	%		355,236		6.0	%		473,648		8.0	%
Total capital		812,857		13.7	%		473,648		8.0	%		592,060		10.0	%
Tier 1 leverage		768,652		7.1	%		433,925		4.0	%		542,407		5.0	%