DERIVATIVE INSTRUMENTS - Amount of Gains and Losses Reclassified from AOCI (Details) - Cash flow hedging - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Foreign exchange forward contracts | Net Revenues
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amount of gain (loss) reclassified from AOCI into income	$ 0.6		$ (0.8)
Foreign exchange forward contracts | Interest expense, net
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amount of gain (loss) reclassified from AOCI into income	0.0	$ 0.0	0.0
Foreign exchange forward contracts | Cost of sales
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amount of gain (loss) reclassified from AOCI into income		0.1	(0.7)
Interest rate swap contracts | Net Revenues
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amount of gain (loss) reclassified from AOCI into income	0.0		0.0
Interest rate swap contracts | Interest expense, net
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amount of gain (loss) reclassified from AOCI into income	$ (10.8)	12.4	6.9
Interest rate swap contracts | Cost of sales
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amount of gain (loss) reclassified from AOCI into income		$ 0.0	$ 0.0