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Regulatory Capital Requirements (Tables) | 12 Months Ended
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Dec. 31, 2017
Regulatory Capital Requirements [Abstract] |
Schedule Of Total Risk-Based, Tier 1 Risk-Based, And Tier 1 Leverage Ratios | Stifel Financial Corp. – Federal Reserve Capital Amounts December 31, 2017
|  | Actual |  |  | For Capital Adequacy Purposes |  |  | To Be Well Capitalized Under Prompt Corrective Action Provisions |
|  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |
Common equity tier 1 capital |  | $ | 1,689,291 |  |  |  | 16.9 | % |  | $ | 450,758 |  |  |  | 4.5 | % |  | $ | 651,095 |  |  |  | 6.5 | %
Tier 1 capital |  |  | 1,899,162 |  |  |  | 19.0 |  |  |  | 601,011 |  |  |  | 6.0 |  |  |  | 801,347 |  |  |  | 8.0 |
Total capital |  |  | 1,966,634 |  |  |  | 19.6 |  |  |  | 801,347 |  |  |  | 8.0 |  |  |  | 1,001,684 |  |  |  | 10.0 |
Tier 1 leverage |  |  | 1,899,162 |  |  |  | 9.5 |  |  |  | 795,679 |  |  |  | 4.0 |  |  |  | 994,599 |  |  |  | 5.0 |
Stifel Bank – Federal Reserve Capital Amounts December 31, 2017
|  | Actual |  |  | For Capital Adequacy Purposes |  |  | To Be Well Capitalized Under Prompt Corrective Action Provisions |
|  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |
Common equity tier 1 capital |  | $ | 1,056,211 |  |  |  | 14.3 | % |  | $ | 331,447 |  |  |  | 4.5 | % |  | $ | 478,757 |  |  |  | 6.5 | %
Tier 1 capital |  |  | 1,056,211 |  |  |  | 14.3 |  |  |  | 441,930 |  |  |  | 6.0 |  |  |  | 589,240 |  |  |  | 8.0 |
Total capital |  |  | 1,124,452 |  |  |  | 15.3 |  |  |  | 589,240 |  |  |  | 8.0 |  |  |  | 736,550 |  |  |  | 10.0 |
Tier 1 leverage |  |  | 1,056,211 |  |  |  | 7.1 |  |  |  | 595,872 |  |  |  | 4.0 |  |  |  | 744,840 |  |  |  | 5.0 |

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958570-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958568-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=84167132&loc=d3e65071-112826 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1G -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958577-112826 + Details
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