Other (Expense) Income, Net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Other (Expense) Income, Net
Unrealized gains on company owned life insurance contracts and investments held in rabbi trusts	$ 0.1	$ 0.9	$ 1.6	$ 3.3
Equity in earnings of unconsolidated subsidiaries		0.1	0.4	1.4
Foreign exchange	(0.8)	0.2	(2.0)	0.1
Other income	0.1		0.1	0.4
Total other (expense) income, net	$ (0.6)	$ 1.2	$ 0.1	$ 5.2