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Property, Plant and Equipment (Tables)
 6 Months Ended
Sep. 30, 2021
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, plant and equipment, including depreciable lives, consisted of the following:

  
September 30, 2021
    
March 31, 2021
  
Land
  
$
16.8
    
$
16.4
  
Buildings and improvements (10-40 years)
    
214.2
      
203.5
  
Machinery and equipment (3-15 years)
    
703.9
      
623.2
  
Office equipment (3-10 years)
    
83.9
      
81.3
  
Construction in progress
    
19.9
      
19.0
  
     
1,038.7
      
943.4
  
Less: accumulated depreciation
    
(772.8
)
    
(673.5
)
Net property, plant and equipment
  
$
265.9
    
$
269.9