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Property, Plant and Equipment (Tables)
 3 Months Ended
Jun. 30, 2018
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, plant and equipment, including depreciable lives, consisted of the following:

  
June 30, 2018
  
March 31, 2018
 
Land
 
$
21.5
  
$
22.6
 
Buildings and improvements (10-40 years)
  
287.4
   
295.6
 
Machinery and equipment (3-12 years)
  
823.9
   
840.8
 
Office equipment (3-10 years)
  
89.8
   
93.0
 
Construction in progress
  
53.7
   
50.2
 
   
1,276.3
   
1,302.2
 
Less: accumulated depreciation
  
(789.4
)
  
(797.9
)
Net property, plant and equipment
 
$
486.9
  
$
504.3