Business Description and Organization (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2013

Dec. 31, 2012

Business Description, Organization and Basis of Presentation [Abstract]

Ownership interest by limited partners

As of September 30, 2013, the ownership structure of AllianceBernstein, expressed as a percentage of general and limited partnership interests, was as follows:

AXA and its subsidiaries	64.0	%
Holding	34.5
Unaffiliated holders	1.5
	100.0	%

As of December 31, 2012, the ownership structure of AllianceBernstein, expressed as a percentage of general and limited partnership interests, was as follows:

AXA and its subsidiaries	61.0	%
Holding	37.5
Unaffiliated holders	1.5
	100.0	%