EMPLOYEE BENEFIT PLANS - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Defined Benefit Plan Disclosure [Line Items]
Service period	90 days
Percent of company match to plan	100.00%
Percent of employee salary eligible for contribution	6.00%
Curtailment gain	$ 0.7	$ 1.3	$ 6.9
Actuarial loss (gain)	20.7	100.5
Net periodic benefit cost	8.5	12.7	17.8
Discontinued Operations
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost	0.0	0.0	6.2
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss (gain)	17.4	89.6
Gain (loss) on plan assets	(1.9)	(16.0)
Other Post-Employment Benefits
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	0.0	0.0	0.0
Actuarial loss (gain)	3.3	10.9
Net periodic benefit cost	(0.3)	1.1	(1.1)
Expected contributions	2.4
U.S.
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	13.7	13.6	15.8
U.S. | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	0.0	0.0	0.0
Actuarial loss (gain)	0.8	2.8
Accumulated benefit obligation	13.0	14.5
Net periodic benefit cost	(2.2)	0.9	2.0
Expected contributions	1.3
International
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	9.6	9.7	12.0
International | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	0.7	1.3	6.9
Actuarial loss (gain)	16.6	86.8
Accumulated benefit obligation	346.3	333.0
Net periodic benefit cost	11.0	10.7	16.9
Expected contributions	16.2
Transformation Plan | International | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	0.7	1.3	6.9
Settlement loss related to restructuring activities	0.2	1.8	3.8
Turnaround Plan, Current Year Restructuring Actions | International | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Settlement loss related to restructuring activities	$ 0.0	$ 1.4	$ 2.3