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Income Taxes Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2017
Mar. 31, 2016
Income Tax Disclosure [Abstract]        
Effective Income Tax Rate Reconciliation, Percent 38.70% 41.40% 933.60% 35.60%
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount $ 0.3 $ 0.1 $ 0.9 $ 1.3