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Regulatory Capital Requirements (Schedule Of Total Risk-Based, Tier 1 Risk-Based, And Tier 1 Leverage Ratios) (Details) $ in Thousands | Jun. 30, 2021 USD ($)
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Stifel Financial Corp. [Member] |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |
Tier 1 capital, Actual Amount | $ 3,207,682
Tier 1 capital, Actual Ratio | 0.189
Tier 1 capital For Capital Adequacy Purposes, Amount | $ 1,017,145
Tier 1 capital For Capital Adequacy Purposes, Ratio | 6.0
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 1,356,193
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 8.0
Total capital, Actual Amount | $ 3,353,813
Total capital, Actual Ratio | 0.198
Total capital For Capital Adequacy Purposes, Amount | $ 1,356,193
Total capital For Capital Adequacy Purposes, Ratio | 8.0
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 1,695,242
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 10.0
Tier 1 leverage, Actual Amount | $ 3,207,682
Tier 1 leverage, Actual Ratio | 0.117
Tier 1 leverage For Capital Adequacy Purposes, Amount | $ 1,095,114
Tier 1 leverage For Capital Adequacy Purposes, Ratio | 4.0
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 1,368,893
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 5.0
Stifel Financial Corp. [Member] | Common Stock [Member] |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |
Tier 1 capital, Actual Amount | $ 2,672,682
Tier 1 capital, Actual Ratio | 0.158
Tier 1 capital For Capital Adequacy Purposes, Amount | $ 762,859
Tier 1 capital For Capital Adequacy Purposes, Ratio | 4.5
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 1,101,907
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 6.5
Stifel Bank & Trust [Member] |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |
Tier 1 capital, Actual Amount | $ 1,069,763
Tier 1 capital, Actual Ratio | 0.107
Tier 1 capital For Capital Adequacy Purposes, Amount | $ 597,486
Tier 1 capital For Capital Adequacy Purposes, Ratio | 6.0
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 796,648
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 8.0
Total capital, Actual Amount | $ 1,178,159
Total capital, Actual Ratio | 0.118
Total capital For Capital Adequacy Purposes, Amount | $ 796,648
Total capital For Capital Adequacy Purposes, Ratio | 8.0
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 995,811
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 10.0
Tier 1 leverage, Actual Amount | $ 1,069,763
Tier 1 leverage, Actual Ratio | 0.070
Tier 1 leverage For Capital Adequacy Purposes, Amount | $ 607,050
Tier 1 leverage For Capital Adequacy Purposes, Ratio | 4.0
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 758,812
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 5.0
Stifel Bank & Trust [Member] | Common Stock [Member] |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |
Tier 1 capital, Actual Amount | $ 1,069,763
Tier 1 capital, Actual Ratio | 0.107
Tier 1 capital For Capital Adequacy Purposes, Amount | $ 448,115
Tier 1 capital For Capital Adequacy Purposes, Ratio | 4.5
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 647,277
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 6.5
Stifel Bank [Member] |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |
Tier 1 capital, Actual Amount | $ 326,622
Tier 1 capital, Actual Ratio | 0.205
Tier 1 capital For Capital Adequacy Purposes, Amount | $ 95,638
Tier 1 capital For Capital Adequacy Purposes, Ratio | 6.0
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 127,517
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 8.0
Total capital, Actual Amount | $ 333,440
Total capital, Actual Ratio | 0.209
Total capital For Capital Adequacy Purposes, Amount | $ 127,517
Total capital For Capital Adequacy Purposes, Ratio | 8.0
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 159,396
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 10.0
Tier 1 leverage, Actual Amount | $ 326,622
Tier 1 leverage, Actual Ratio | 0.071
Tier 1 leverage For Capital Adequacy Purposes, Amount | $ 184,951
Tier 1 leverage For Capital Adequacy Purposes, Ratio | 4.0
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 231,189
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 5.0
Stifel Bank [Member] | Common Stock [Member] |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |
Tier 1 capital, Actual Amount | $ 326,622
Tier 1 capital, Actual Ratio | 0.205
Tier 1 capital For Capital Adequacy Purposes, Amount | $ 71,728
Tier 1 capital For Capital Adequacy Purposes, Ratio | 4.5
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 103,608
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 6.5

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