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Plant Closure Provisions (Tables)
 3 Months Ended
Mar. 31, 2020
Restructuring and Related Activities [Abstract]  
Movements in Plant Closure and Restructuring Provisions
Movements in the provisions are summarized as follows:
(in millions)
 
2020
 
Total at January 1
  $
49.3
 
Charge for the period
   
1.1
 
Utilized in the period
   
(1.0
 )
Exchange effect
   
(0.1
 )
         
Total at March 31
   
49.3
 
Due within one year
   
(5.6
 )
         
Due after one year
  $
43.7