Subsidiary, Ownership Percentage, Noncontrolling Owner, Remaining

No definition available.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

+ Details

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- 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

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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- Details

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- Details

Name:	srt_OwnershipAxis=rily_B.RileySecuritiesHoldingsInc.Member
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- Details

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NONCONTROLLING INTERESTS - Narrative (Details)	Mar. 10, 2025	Jan. 06, 2025
BRC Partners Opportunity Fund, LP
Noncontrolling Interest [Line Items]
Percentage Ownership		86.60%
B. Riley Securities Holdings, Inc.
Noncontrolling Interest [Line Items]
Minority interest, remaining	89.40%
B. Riley Securities Holdings, Inc. \| Capital Markets
Noncontrolling Interest [Line Items]
Ownership, percentage	0.60%