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Subsequent Event - Additional Information (Details) - shares			6 Months Ended
	Jul. 10, 2025	Dec. 19, 2024	Jun. 30, 2025	Dec. 31, 2024
Subsequent Event [Line Items]
Retirement of AB Holding units (in shares)			1,047,962
Subsequent Event | AB | EQH and its subsidiaries
Subsequent Event [Line Items]
General partnership interest (as a percent)	1.00%
Subsequent Event | AB | General and Limited Partnership Interests | EQH and its subsidiaries
Subsequent Event [Line Items]
General partnership interest (as a percent)	68.60%
AB Holding Units | Master Exchange Agreement | EQH
Subsequent Event [Line Items]
Retirement of AB Holding units (in shares)		5,211,194
AB Holding Units | Amended Exchange Agreement | EQH | Subsequent Event
Subsequent Event [Line Items]
Retirement of AB Holding units (in shares)	19,682,946
AB Units | Master Exchange Agreement | EQH
Subsequent Event [Line Items]
Conversion of AB units (in shares)		5,211,194
AB Units | Amended Exchange Agreement | EQH | Subsequent Event
Subsequent Event [Line Items]
Conversion of AB units (in shares)	19,682,946
Master Exchange Agreement
Subsequent Event [Line Items]
Issuance of AB units (in shares)		10,000,000
Remaining authorized shares (in shares)			4,788,806	4,788,806
Master Exchange Agreement | Subsequent Event
Subsequent Event [Line Items]
Remaining authorized shares (in shares)	19,682,946

X

- Definition

Share-Based Compensation Arrangement by Share-Based Payment Award, Remaining Number of Shares Available for Future Issuance

+ References

No definition available.

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The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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- Definition

Number of shares that have been repurchased and retired during the period.

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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