SCHEDULE II. VALUATION AND QUALIFYING ACCOUNTS (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Allowance for doubtful accounts receivable
Valuation accounts activity
Balance at Beginning of Period	$ 2.7	$ 2.7	$ 2.8
Charged to Costs and Expenses	0.7	(0.2)	(0.1)
Charged to Other Accounts	1.7
Deductions	(0.2)	0.2
Balance at End of Period	4.9	2.7	2.7
Deferred tax valuation allowance
Valuation accounts activity
Balance at Beginning of Period	17.5	17.6	17.9
Charged to Costs and Expenses	0.6	(0.2)	(0.4)
Deductions		0.1	0.1
Balance at End of Period	18.1	17.5	17.6
Inventory reserves
Valuation accounts activity
Balance at Beginning of Period	12.0	15.2	16.0
Charged to Costs and Expenses	1.2	(3.5)	(0.9)
Charged to Other Accounts	5.2
Deductions	(0.2)	0.3	0.1
Balance at End of Period	$ 18.2	$ 12.0	$ 15.2