EMPLOYEE BENEFIT PLANS - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
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	$ 0.0	$ 0.1	$ 0.7
Actuarial loss (gain)	10.2	(4.1)
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss (gain)	9.2	(8.6)
Gain (loss) on plan assets	0.3	(3.7)
Other Post-Employment Benefits
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	0.0	0.0	0.0
Actuarial loss (gain)	1.0	4.5
Expected contributions	2.1
U.S.
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	15.4	15.6	13.7
U.S. | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	0.0	0.0	0.0
Actuarial loss (gain)	0.5	(0.1)
Accumulated benefit obligation	11.3	12.5
Expected contributions	1.3
International
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	11.6	10.9	9.6
International | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	0.0	0.1	0.7
Actuarial loss (gain)	8.7	(8.5)
Accumulated benefit obligation	364.3	351.9
Expected contributions	17.1
International | Fixed Cost Reduction Plan | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	0.0	0.1	0.7
Settlement (gain) loss related to restructuring activities	0.5	0.0	0.2
International | Turnaround Plan, Current Year Restructuring Actions | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Settlement (gain) loss related to restructuring activities	$ 0.0	$ 0.0	$ 0.0