RESTRUCTURING COSTS - Restructuring Costs by Program (Details) - USD ($) $ in Millions	12 Months Ended				48 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ (6.5)	$ (6.5)	$ 63.6
Transformation Plan
Restructuring Cost and Reserve [Line Items]
Restructuring costs	(6.5)	(6.5)	73.2	$ 156.6	$ 216.8
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 0.0	$ 0.0	$ (9.6)