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Other Intangible Assets (Tables)
 6 Months Ended
Jun. 30, 2013
Goodwill And Intangible Assets Disclosure [Abstract]  
Summary of Other Intangible Assets

The following table summarizes the other intangible assets movement year on year:

 

     Six Months Ended
June 30		  

(in millions)

        2013             2012      

Gross cost at January 1

    $ 106.2      $ 51.2   

Capitalization of internally developed software and other costs

      3.8        3.5   

Exchange effect

      0.0        0.0   
  

 

 

    

 

 

  

Gross cost at June 30

      110.0        54.7   
  

 

 

    

 

 

  

Accumulated amortization at January 1

      (37.6 )      (33.5 ) 

Amortization expense

      (4.2 )      (2.0 ) 

Exchange effect

      (0.1 )      (0.1 ) 
  

 

 

    

 

 

  

Accumulated amortization at June 30

      (41.9 )      (35.6 ) 
  

 

 

    

 

 

  

Net book amount at June 30

    $ 68.1      $ 19.1