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Property, Plant and Equipment (Tables)
 12 Months Ended
Mar. 31, 2016
Property, Plant and Equipment [Abstract]  
Property, plant and equipment
Property, plant and equipment, including depreciable lives, consisted of the following:

  
March 31,
  
2016
 
2015
Land
 
$
7.2
  
$
8.2
 
Buildings and improvements (10-40 years)
  
221.3
   
221.0
 
Machinery and equipment (3-12 years)
  
694.3
   
652.0
 
Office equipment (3-10 years)
  
84.1
   
81.9
 
Construction in progress
  
36.7
   
31.7
 
   
1,043.6
   
994.8
 
Less: accumulated depreciation
  
(705.0
)
  
(672.7
)
Net property, plant and equipment
 
$
338.6
  
$
322.1