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Business Description, Organization and Basis of Presentation (Details) - shares | 9 Months Ended |
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2023
Ownership structure of AB Holding |  |
Units outstanding (in shares) | 100,000 | 100,000
AB Holding | EQH |  |
Ownership structure of AB Holding |  |
General partnership interest (percent) | 4.00% |
AB Holding | AllianceBernstein Corporation |  |
Ownership structure of AB Holding |  |
General partnership interest (percent) | 1.00% |
Units outstanding (in shares) | 100,000 |
AB | EQH and its subsidiaries |  |
Ownership structure of AB Holding |  |
General partnership interest (percent) | 61.60% |

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- Definition The number of general partner units outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-5 + Details
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- Definition Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482987/272-10-50-3 + Details
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