Annual report pursuant to Section 13 and 15(d)

Description of Business and Summary of Significant Accounting Policies - Property and Equipment (Details)

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Description of Business and Summary of Significant Accounting Policies - Property and Equipment (Details) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Property, Plant and Equipment      
Depreciation expense $ 53.3 $ 49.1 $ 52.6
Buildings | Minimum      
Property, Plant and Equipment      
Property and equipment, useful life (in years) 30 years    
Buildings | Maximum      
Property, Plant and Equipment      
Property and equipment, useful life (in years) 35 years    
Leasehold improvements | Maximum      
Property, Plant and Equipment      
Property and equipment, useful life (in years) 15 years    
Machinery and equipment | Minimum      
Property, Plant and Equipment      
Property and equipment, useful life (in years) 2 years    
Machinery and equipment | Maximum      
Property, Plant and Equipment      
Property and equipment, useful life (in years) 5 years    
Office furniture and fixtures      
Property, Plant and Equipment      
Property and equipment, useful life (in years) 7 years