INCOME TAXES (Reconciliation of Income Tax Provision) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
INCOME TAXES
Expected provision at the statutory rate	$ 7.6	$ 7.1	$ 17.6	$ 14.8
State income taxes benefit, net of federal benefit	0.9	0.8	1.5	1.5
Stock-based compensation	1.0	(2.9)	2.5	0.4
Transaction costs not deductible for tax purposes	0.1	0.2	0.2	0.3
Change in statutory tax rate, non-US	0.8		0.8	(1.7)
Foreign tax rate differential	0.5	0.4	(1.7)	(0.3)
Change in valuation allowance	(25.7)	(4.4)	(31.4)	(6.7)
US Tax Reform	44.1		44.1
Other, net	(6.4)	(1.0)	(5.3)	(1.5)
Provision for income taxes	$ 22.9	$ 0.2	$ 28.3	$ 6.8