Other Income (Expense), Net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Other Income (Expense), Net
Gains (losses) on company owned life insurance contracts and investments held in rabbi trusts	$ 2.6	$ (1.7)
Equity in (losses) earnings of unconsolidated subsidiaries	(0.6)	0.7
Interest income	0.1	0.3
Other income	0.6
Total other income (expense), net	$ 2.7	$ (0.7)