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Inventories (Tables)
6 Months Ended
Sep. 30, 2017
Inventories [Abstract]  
Inventories
Inventories consisted of the following:

  
September 30, 2017
  
March 31, 2017
 
Raw materials and work in process
 
$
139.5
  
$
127.7
 
Finished goods
  
44.8
   
40.8
 
Total inventories
 
$
184.3
  
$
168.5