Other (Expense) Income, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Other Income and Expenses [Abstract]
Interest income	$ 0.2	$ 0.1	$ 0.2
Equity in earnings of unconsolidated subsidiaries	0.6	0.1	0.6
Unrealized (losses) gains on company owned life insurance contracts and investments held in rabbi trusts	(0.5)	0.3	2.1
Foreign exchange	(2.4)	0.4	(1.5)
Other	0.0	4.4	0.0
Total other (expense) income, net	$ (2.1)	$ 5.3	$ 1.4