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Units Outstanding (Tables)
3 Months Ended
Mar. 31, 2015
Units Outstanding [Abstract]  
Changes in Holding Units Outstanding
Changes in AB Holding Units outstanding during the three-month period ended March 31, 2015 are as follows:

Outstanding as of December 31, 2014
  
100,756,999
 
Options exercised
  
228,816
 
Units issued
  
27,755
 
Units retired
  
(689,030
)
Outstanding as of March 31, 2015
  
100,324,540