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Business Description and Organization - Additional Information (Details) - shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Ownership structure of AB expressed as percentage of general and limited partnership interests
Units outstanding (in shares)	100,000	100,000
AB Holding | AllianceBernstein Corporation
Ownership structure of AB expressed as percentage of general and limited partnership interests
Units outstanding (in shares)	100,000
General partnership interest (percent)	1.00%

X

- 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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X

- 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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X

- References

No definition available.

+ Details

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X

- Details

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X

- Details

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