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Restructuring and Integration Costs (Tables)
3 Months Ended
Mar. 31, 2012
Restructuring and Integration Costs  
Summary of restructuring activities

 

 

 
  Three months ended
March 31,
 
 
  2012   2011  
 
  (in millions)
 

Reserve balance—beginning

  $ 2.0   $ 2.9  

Employee termination expense

        1.1  

Cash payments

    (0.9 )   (1.6 )
           

Reserve balance—ending

  $ 1.1   $ 2.4