Income Taxes (Net Deferred Tax Assets and Liabilities Included In The Consolidated Balance Sheets) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Jun. 30, 2015
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current deferred tax assets	$ 0.0	$ 59.1
Non-current deferred tax assets	27.1	11.7
Current deferred tax liabilities	0.0	(10.0)
Deferred tax assets (liabilities), net	7.8	27.8
Non-current deferred tax liabilities	$ (19.3)	$ (33.0)