Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Undistributed earnings of foreign subsidiaries that have been indefinitely reinvested	$ 729.0	$ 565.6
Non-U.S. loss carryforwards subject to expiration	1.5
Gross unrecognized tax benefits	31.0	29.5	$ 35.2	$ 41.5
Gross unrecognized tax benefits that would impact the effective tax rate if recognized	20.1	18.9
Unrecognized Tax Benefits, Decreases Resulting from Settlements with Taxing Authorities	0.0	0.0	6.5
Decrease resulting from the expiration of statutes of limitations	0.4	1.0	0.1
Change in liability for unrecognized tax benefits for uncertain tax positions	0.9
Interest and penalties included in liability for unrecognized tax benefits	4.1	3.4
Interest and penalties included in income tax expense	0.6	0.9	0.8
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions	0.0	5.0	0.5
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions	1.6	$ 0.1	$ 0.0
United States [Member]
Operating loss carryforwards	3.9
State [Member]
Operating loss carryforwards	24.0
Foreign [Member]
Operating loss carryforwards	$ 10.4