DERIVATIVE INSTRUMENTS - Derivatives Not Designated as Hedging (Details) - Not Designated as Hedging Instrument - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Selling, general and administrative expenses
Derivative [Line Items]
Gain (loss) on derivatives, net	$ 0.0	$ (0.2)	$ 0.1	$ (1.1)
Interest expense, net
Derivative [Line Items]
Gain (loss) on derivatives, net	(4.1)	(7.0)	(5.7)	6.1
Other expense, net
Derivative [Line Items]
Gain (loss) on derivatives, net	$ 0.0	$ (0.3)	$ 1.4	$ (0.3)