DERIVATIVE INSTRUMENTS - Amount of Gains and Losses Reclassified from AOCI (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Net revenues | Foreign exchange forward contracts
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	$ 1.0	$ 0.0
Net revenues | Interest rate swap contracts
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	0.0
Interest expense, net | Foreign exchange forward contracts
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	0.0
Interest expense, net | Interest rate swap contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amount of gain (loss) reclassified from AOCI into income	$ (11.5)	$ (1.2)	$ (21.3)	$ (0.3)