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Inventories (Tables)
12 Months Ended
Mar. 31, 2017
Inventories [Abstract]  
Inventories
Inventories consisted of the following:

  
March 31,
 
  
2017
  
2016
 
Raw materials and work in process
 
$
127.7
  
$
79.5
 
Finished goods
  
40.8
   
31.5
 
Total inventories
 
$
168.5
  
$
111.0