RESTRUCTURING COSTS - Restructuring Costs by Type (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ (1.2)	$ 12.4
Transformation Plan
Restructuring Cost and Reserve [Line Items]
Restructuring costs	(1.2)	$ 12.4	$ (6.5)	$ 73.2	$ 156.6
Cumulative through September 30, 2022	222.1
Cumulative through September 30, 2022	(222.1)
Transformation Plan | Severance and Employee Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring costs	(1.2)		(6.2)	73.4	151.2
Cumulative through September 30, 2022	217.2
Cumulative through September 30, 2022	(217.2)
Transformation Plan | Fixed Asset Write-offs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	0.0		0.0	(0.5)	(1.1)
Cumulative through September 30, 2022	1.6
Cumulative through September 30, 2022	(1.6)
Transformation Plan | Other Exit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	0.0		$ (0.3)	$ 0.3	$ 6.5
Cumulative through September 30, 2022	6.5
Cumulative through September 30, 2022	$ (6.5)