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Goodwill (Tables)
3 Months Ended
Mar. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Summary of Goodwill
The following table summarizes the goodwill movements in the year:
 
(in millions)
  
Gross Cost
 
Opening balance at January 1, 2022
   $ 364.3  
Exchange effect
     (2.3
    
 
 
 
Closing balance at March 31, 2022
   $ 362.0