RESTRUCTURING COSTS - Restructuring Costs by Program (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021	Jun. 30, 2021	Jun. 30, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ (6.8)	$ 0.0	$ 1.5	$ 89.7
Transformation Plan
Restructuring Cost and Reserve [Line Items]
Restructuring costs	(6.8)	4.7	1.5	98.4	$ 73.2	$ 156.6
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 0.0	$ (4.7)	$ 0.0	$ (8.7)