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Property, Plant and Equipment (Tables)
6 Months Ended
Jun. 30, 2012
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
                 
    June 30,
2012
    December 31,
2011
 
    (in millions)  

Land

  $ 22.1     $ 22.3  

Buildings and equipment

    1,214.8       1,196.8  

Capitalized software costs

    217.4       208.4  

Instruments

    1,547.4       1,509.2  

Construction in progress

    83.2       76.4  
   

 

 

   

 

 

 
      3,084.9       3,013.1  

Accumulated depreciation

    (1,908.1     (1,805.8
   

 

 

   

 

 

 

Property, plant and equipment, net

  $ 1,176.8     $ 1,207.3