XML 106 R96.htm IDEA: XBRL DOCUMENT
v3.23.1

Regulatory Capital Requirements (Narrative) (Details) $ in Millions | Mar. 31, 2023 USD ($)
--- | ---
Our Other Broker-Dealer Subsidiaries |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |
Ratio of indebtedness to net capital | 15
Stifel Nicolaus [Member] |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |
Aggregate debit balances | 44.60%
Net capital | $ 514.5
Excess of minimum required net capital | 491.5
Stifel Financial Corp. [Member] |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |
Net capital under the alternative method | $ 1.0
Aggregate debit balances | 2.00%

X
- Definition Percentage of aggregate debit balances. + References No definition available. + Details
Name: | sf_PercentageOfAggregateDebitBalances
Namespace Prefix: | sf_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of net capital in excess of minimum required net capital, calculated under Alternative Standard. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Rule 15c3-1 -Number 240 -Section 15c3-1 + Details
Name: | srt_AlternativeExcessNetCapital
Namespace Prefix: | srt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum amount of net capital of broker-dealer and its subsidiary, calculated under Alternative Standard. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Rule 15c3-1 -Number 240 -Section 15c3-1 + Details
Name: | srt_AlternativeNetCapitalRequirement1
Namespace Prefix: | srt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of net capital of broker-dealer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Rule 15c3-1 -Number 240 -Section 15c3-1 + Details
Name: | srt_NetCapital
Namespace Prefix: | srt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Indebtedness divided by net capital. + References No definition available. + Details
Name: | us-gaap_RatioOfIndebtednessToNetCapital1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=sf_OurOtherBrokerDealerSubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=sf_StifelNicolausMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=srt_ParentCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |