SCHEDULE II. VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Allowance for doubtful accounts receivable
Valuation accounts activity
Balance at Beginning of Period	$ 2.6	$ 4.1	$ 3.8
Charged to Costs & Expenses	0.1	(1.0)	1.2
Charged to Other Accounts	(0.1)	0.0	0.0
Deductions	0.0	(0.5)	(0.9)
Balance at End of Period	2.6	2.6	4.1
Deferred tax valuation allowance
Valuation accounts activity
Balance at Beginning of Period	18.5	17.7	17.5
Charged to Costs & Expenses	4.9	0.8	0.2
Charged to Other Accounts	0.5	0.0	0.0
Deductions	0.0	0.0	0.0
Balance at End of Period	$ 23.9	$ 18.5	$ 17.7