Business Description and Organization - Additional Information (Details) - shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Ownership structure of AB expressed as percentage of general and limited partnership interests
Units outstanding (in shares)	100,000	100,000
AB Holding | EQH
Ownership structure of AB expressed as percentage of general and limited partnership interests
General partnership interest (percent)	3.50%
AB Holding | AllianceBernstein Corporation
Ownership structure of AB expressed as percentage of general and limited partnership interests
General partnership interest (percent)	1.00%
Units outstanding (in shares)	100,000
AB | EQH and its subsidiaries
Ownership structure of AB expressed as percentage of general and limited partnership interests
General partnership interest (percent)	61.20%