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Goodwill and Other Intangible Assets
6 Months Ended
Jun. 30, 2011
Goodwill and Other Intangible Assets [Abstract]  
Goodwill and Other Intangible Assets
Note 4 – Goodwill and Other Intangible Assets

Changes in the carrying amount of goodwill for the six months ended June 30, 2011 are as follows (in thousands):

     
   
Total
 
Goodwill balance as of December 31, 2010
 $4,234,821 
      
Goodwill acquired in the six months ended June 30, 2011
  4,033 
Other
  11,347 
      
Goodwill balance as of June 30, 2011
 $4,250,201 

Goodwill is reviewed at the reporting unit level for impairment using a fair value based approach at least annually or between annual tests if events occur or circumstances indicate there may be impairment.

The “Other” caption above includes the settlement of acquisition matters relating to prior-year acquisitions (including, where applicable, payments pursuant to acquisition agreements such as deferred payments, indemnification payments and payments originating from earnout provisions, as well as adjustments for the finalization of purchase price allocations, including identifiable intangible asset valuations).  “Other” also includes the effect of adjustments due to foreign currency translations, which relate to the Company’s Canadian pharmacy operations.

The Company’s intangible amortization expense for the three and six months ended June 30, 2011 was approximately $10 million and $20 million, respectively, and was approximately $9 million and $19 million for the three and six months ended June 30, 2010, respectively.