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Bank Deposits (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
Bank Deposits [Line Items] |  |
Weighted average interest rate on deposits | 0.02% | 0.09%
Proceeds from deposits | $ 215.1 |
Gain (loss) on sale of deposits | 4.8 |
Brokerage Customers Deposits [Member] |  |
Bank Deposits [Line Items] |  |
Deposits of related parties | 21,300.0 | $ 16,000.0
Stifel Nicolaus [Member] |  |
Bank Deposits [Line Items] |  |
Interest bearing and time deposits of executive officers, directors, and affiliates | $ 8.6 | $ 6.7

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- Definition Bank deposits. + References No definition available. + Details
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- Definition Gain (loss) on sale of deposits. + References No definition available. + Details
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- Definition Interest bearing and time deposit of officials. + References No definition available. + Details
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- Definition Cash inflow received in association with a commitment to issue a mortgage. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585 + Details
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- Definition Amount of deposits held by the entity for a related party (entity, shareholder, employee). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(k)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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- Details
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- Details
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