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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, 2020 USD ($)
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Stifel Financial Corp. [Member] |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |
Tier 1 capital, Actual Amount | $ 2,606,121
Tier 1 capital, Actual Ratio | 0.193
Tier 1 capital For Capital Adequacy Purposes, Amount | $ 811,312
Tier 1 capital For Capital Adequacy Purposes, Ratio | 6.0
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 1,081,749
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 8.0
Total capital, Actual Amount | $ 2,763,535
Total capital, Actual Ratio | 0.204
Total capital For Capital Adequacy Purposes, Amount | $ 1,081,749
Total capital For Capital Adequacy Purposes, Ratio | 8.0
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 1,352,186
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 10.0
Tier 1 leverage, Actual Amount | $ 2,606,121
Tier 1 leverage, Actual Ratio | 0.110
Tier 1 leverage For Capital Adequacy Purposes, Amount | $ 947,340
Tier 1 leverage For Capital Adequacy Purposes, Ratio | 4.0
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 1,184,175
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 | $ 2,071,121
Tier 1 capital, Actual Ratio | 0.153
Tier 1 capital For Capital Adequacy Purposes, Amount | $ 608,484
Tier 1 capital For Capital Adequacy Purposes, Ratio | 4.5
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 878,921
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 | $ 1,058,401
Tier 1 capital, Actual Ratio | 0.124
Tier 1 capital For Capital Adequacy Purposes, Amount | $ 512,286
Tier 1 capital For Capital Adequacy Purposes, Ratio | 6.0
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 683,048
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 8.0
Total capital, Actual Amount | $ 1,188,637
Total capital, Actual Ratio | 0.139
Total capital For Capital Adequacy Purposes, Amount | $ 683,048
Total capital For Capital Adequacy Purposes, Ratio | 8.0
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 853,810
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 10.0
Tier 1 leverage, Actual Amount | $ 1,058,401
Tier 1 leverage, Actual Ratio | 0.072
Tier 1 leverage For Capital Adequacy Purposes, Amount | $ 591,333
Tier 1 leverage For Capital Adequacy Purposes, Ratio | 4.0
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 739,167
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 | $ 1,058,401
Tier 1 capital, Actual Ratio | 0.124
Tier 1 capital For Capital Adequacy Purposes, Amount | $ 384,214
Tier 1 capital For Capital Adequacy Purposes, Ratio | 4.5
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 554,976
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 | $ 196,916
Tier 1 capital, Actual Ratio | 0.188
Tier 1 capital For Capital Adequacy Purposes, Amount | $ 62,829
Tier 1 capital For Capital Adequacy Purposes, Ratio | 6.0
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 83,771
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 8.0
Total capital, Actual Amount | $ 210,783
Total capital, Actual Ratio | 0.201
Total capital For Capital Adequacy Purposes, Amount | $ 83,771
Total capital For Capital Adequacy Purposes, Ratio | 8.0
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 104,714
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 10.0
Tier 1 leverage, Actual Amount | $ 196,916
Tier 1 leverage, Actual Ratio | 0.071
Tier 1 leverage For Capital Adequacy Purposes, Amount | $ 111,207
Tier 1 leverage For Capital Adequacy Purposes, Ratio | 4.0
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 139,009
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 | $ 196,916
Tier 1 capital, Actual Ratio | 0.188
Tier 1 capital For Capital Adequacy Purposes, Amount | $ 47,121
Tier 1 capital For Capital Adequacy Purposes, Ratio | 4.5
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 68,064
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 6.5

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