Income Taxes U.S. Tax Reform - USD ($) number in Millions, $ in Millions	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
U.S. Tax Reform [Line Items]
Tax Cuts and Jobs Act, Tax Effect	$ (42.5)	$ 0.0	$ 0.0
Deferred Tax Liabilities, Undistributed Foreign Earnings	0.9	1.3
Deferred Tax Assets, Net	$ 0.4	$ 22.2
Tax Cuts and Job Act, Tax Effect [Member]
U.S. Tax Reform [Line Items]
Non-U.S.	3700.00%
Deferred Tax Liabilities, Undistributed Foreign Earnings	$ 11.4
Deferred Tax Assets, Net	6.2
Provisional [Member]
U.S. Tax Reform [Line Items]
Deferred Tax Liabilities, Undistributed Foreign Earnings	11.4
Post-1986 Earnings and Profits	225.4
Cash Tax Liability	$ 2.6