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Business Description and Organization (Tables)
12 Months Ended
Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Ownership Interest by Limited Partners
As of December 31, 2019, the ownership structure of AB, expressed as a percentage of general and limited partnership interests, was as follows:
EQH and its subsidiaries
63.3
%
AB Holding
36.0

Unaffiliated holders
0.7

 
100.0
%