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Deferred Policy Acquisition Costs
12 Months Ended
Dec. 31, 2011
Deferred Policy Acquisition Costs  
Deferred Policy Acquisition Costs

7. Deferred Policy Acquisition Costs

        Policy acquisition costs deferred and amortized were as follows:

 
  For the year ended December 31,  
 
  2011   2010   2009  
 
  (in millions)
 

Balance at beginning of year

  $ 3,529.8   $ 3,681.4   $ 4,153.0  

Cost deferred during the year

    520.5     496.3     482.4  

Amortized to expense during the year (1)

    (538.0 )   (205.9 )   (92.2 )

Adjustment related to unrealized gains on available-for-sale securities and derivative instruments

    (198.8 )   (442.0 )   (861.8 )
               

Balance at end of year

  $ 3,313.5   $ 3,529.8   $ 3,681.4  
               

(1)
Includes adjustments for revisions to estimated gross profits.