INCOME TAXES (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 22, 2017	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
INCOME TAXES
Effective tax rates	35.00%	21.00%				21.00%	28.00%	35.00%
Reverse of valuation allowance on deferred tax assets of certain Canadian subsidiaries				$ 31.0
Provision to return adjustment for entities in France		$ 1.8	$ 5.8	(3.5)	$ 4.3
Liability for uncertain tax positions related to state taxing jurisdictions		1.8		1.8
Accrued interest and penalties		0.2		0.2
Deferred tax liability changes to indefinite reinvestment assertion		(0.4)		7.5
Liability was recognized for prior year tax positions				1.6
Uncertain tax positions relate to permanent differences		$ 0.5		$ 0.5