Income Taxes (Net Deferred Tax Assets and Liabilities Included In The Consolidated Balance Sheets) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Jun. 30, 2016
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Non-current deferred tax assets	$ 35.1	$ 27.1
Deferred tax assets (liabilities), net	22.5	7.8
Non-current deferred tax liabilities	$ (12.6)	$ (19.3)