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Property, Plant and Equipment (Tables)
 9 Months Ended
Dec. 31, 2018
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, plant and equipment, including depreciable lives, consisted of the following:

  
December 31, 2018
  
March 31, 2018
 
Land
 
$
21.1
  
$
22.6
 
Buildings and improvements (10-40 years)
  
288.3
   
295.6
 
Machinery and equipment (3-12 years)
  
838.8
   
840.8
 
Office equipment (3-10 years)
  
91.8
   
93.0
 
Construction in progress
  
61.9
   
50.2
 
   
1,301.9
   
1,302.2
 
Less: accumulated depreciation
  
(812.8
)
  
(797.9
)
Net property, plant and equipment
 
$
489.1
  
$
504.3