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Basis of Presentation and Summary of Significant Accounting Policies Research and Development Expense (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2017
Mar. 31, 2016
Selling, General and Administrative Expenses [Member]        
Research and Development Expense [Line Items]        
Research and Development Expense $ 2.3 $ 2.1 $ 5.3 $ 5.8
Cost of Sales [Member]        
Research and Development Expense [Line Items]        
Research and Development Expense $ 11.5 $ 11.7 $ 32.8 $ 35.8