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Regulatory Capital Requirements (Schedule Of Total Risk-Based, Tier 1 Risk-Based, And Tier 1 Leverage Ratios) (Details) $ in Thousands | Mar. 31, 2023 USD ($)
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Stifel Financial Corp. [Member] |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |
Tier 1 capital, Actual Amount | $ 3,965,309
Tier 1 capital, Actual Ratio | 0.168
Tier 1 capital For Capital Adequacy Purposes, Amount | $ 1,412,013
Tier 1 capital For Capital Adequacy Purposes, Ratio | 0.060
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 1,882,684
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 0.080
Total capital, Actual Amount | $ 4,170,458
Total capital, Actual Ratio | 0.177
Total capital For Capital Adequacy Purposes, Amount | $ 1,882,684
Total capital For Capital Adequacy Purposes, Ratio | 0.080
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 2,353,356
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 0.100
Tier 1 leverage, Actual Amount | $ 3,965,309
Tier 1 leverage, Actual Ratio | 0.109
Tier 1 leverage For Capital Adequacy Purposes, Amount | $ 1,456,604
Tier 1 leverage For Capital Adequacy Purposes, Ratio | 0.040
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 1,820,755
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 0.050
Stifel Financial Corp. [Member] | Common Stock [Member] |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |
Tier 1 capital, Actual Amount | $ 3,280,309
Tier 1 capital, Actual Ratio | 0.139
Tier 1 capital For Capital Adequacy Purposes, Amount | $ 1,059,010
Tier 1 capital For Capital Adequacy Purposes, Ratio | 0.045
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 1,529,681
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 0.065
Stifel Bank & Trust [Member] |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |
Tier 1 capital, Actual Amount | $ 1,590,068
Tier 1 capital, Actual Ratio | 0.110
Tier 1 capital For Capital Adequacy Purposes, Amount | $ 867,724
Tier 1 capital For Capital Adequacy Purposes, Ratio | 0.060
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 1,156,965
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 0.080
Total capital, Actual Amount | $ 1,713,883
Total capital, Actual Ratio | 0.119
Total capital For Capital Adequacy Purposes, Amount | $ 1,156,965
Total capital For Capital Adequacy Purposes, Ratio | 0.080
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 1,446,207
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 0.100
Tier 1 leverage, Actual Amount | $ 1,590,068
Tier 1 leverage, Actual Ratio | 0.075
Tier 1 leverage For Capital Adequacy Purposes, Amount | $ 845,785
Tier 1 leverage For Capital Adequacy Purposes, Ratio | 0.040
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 1,057,231
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 0.050
Stifel Bank & Trust [Member] | Common Stock [Member] |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |
Tier 1 capital, Actual Amount | $ 1,590,068
Tier 1 capital, Actual Ratio | 0.110
Tier 1 capital For Capital Adequacy Purposes, Amount | $ 650,793
Tier 1 capital For Capital Adequacy Purposes, Ratio | 0.045
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 940,034
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 0.065
Stifel Bank [Member] |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |
Tier 1 capital, Actual Amount | $ 596,152
Tier 1 capital, Actual Ratio | 0.131
Tier 1 capital For Capital Adequacy Purposes, Amount | $ 272,897
Tier 1 capital For Capital Adequacy Purposes, Ratio | 0.060
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 363,863
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 0.080
Total capital, Actual Amount | $ 622,998
Total capital, Actual Ratio | 0.137
Total capital For Capital Adequacy Purposes, Amount | $ 363,863
Total capital For Capital Adequacy Purposes, Ratio | 0.080
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 454,829
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 0.100
Tier 1 leverage, Actual Amount | $ 596,152
Tier 1 leverage, Actual Ratio | 0.075
Tier 1 leverage For Capital Adequacy Purposes, Amount | $ 319,780
Tier 1 leverage For Capital Adequacy Purposes, Ratio | 0.040
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 399,725
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 0.050
Stifel Bank [Member] | Common Stock [Member] |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |
Tier 1 capital, Actual Amount | $ 596,152
Tier 1 capital, Actual Ratio | 0.131
Tier 1 capital For Capital Adequacy Purposes, Amount | $ 204,673
Tier 1 capital For Capital Adequacy Purposes, Ratio | 0.045
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount | $ 295,639
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio | 0.065

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