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Property Plant and Equipment, Net (Details) - USD ($)
$ in Millions
Oct. 31, 2021
Jul. 31, 2021
Property, Plant and Equipment    
Less accumulated depreciation $ (987.5) $ (977.0)
Property, plant and equipment, net 609.7 617.8
Land    
Property, Plant and Equipment    
Property, plant and equipment, gross 27.2 27.1
Buildings    
Property, Plant and Equipment    
Property, plant and equipment, gross 409.6 410.8
Machinery and equipment    
Property, Plant and Equipment    
Property, plant and equipment, gross 971.2 972.0
Computer software    
Property, Plant and Equipment    
Property, plant and equipment, gross 144.2 144.3
Construction in progress    
Property, Plant and Equipment    
Property, plant and equipment, gross $ 45.0 $ 40.6