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Investment in AllianceBernstein
6 Months Ended
Jun. 30, 2012
Investment in AllianceBernstein [Abstract]  
Investment in AllianceBernstein
4.      Investment in AllianceBernstein

Changes in Holding's investment in AllianceBernstein during the six-month period ended June 30, 2012 were as follows (in thousands):

Investment in AllianceBernstein as of December 31, 2011
 $1,627,912 
Equity in net income attributable to AllianceBernstein Unitholders
  60,510 
Changes in accumulated other comprehensive income (loss)
  (236 )
Additional investments in AllianceBernstein from cash distributions paid to AllianceBernstein consolidated rabbi trust
  3,457 
Cash distributions received from AllianceBernstein
  (50,483 )
Change in Holding Units held by AllianceBernstein for deferred compensation plans
  16,730 
Investment in AllianceBernstein as of June 30, 2012
 $1,657,890