EMPLOYEE BENEFIT PLANS - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
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	$ 1.3	$ 6.9	$ 14.9
Actuarial loss (gain)	(100.5)	33.1
Net periodic benefit cost	12.7	17.8	15.9
Amount recognized in OCI/(L)	84.1	(13.4)
Discontinued Operations
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost	0.0	6.2	14.4
Amount recognized in OCI/(L)		(19.2)
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss (gain)	89.6	35.9
Gain (loss) on plan assets	(16.0)	18.3
Other Post-Employment Benefits
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	0.0	0.0	0.8
Actuarial loss (gain)	(10.9)	(2.8)
Net periodic benefit cost	1.1	(1.1)	(4.0)
Amount recognized in OCI/(L)	9.9	(0.3)
Expected contributions	2.5
U.S.
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	13.6	15.8	20.5
U.S. | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	0.0	0.0	0.0
Actuarial loss (gain)	(2.8)	0.5
Accumulated benefit obligation	14.5	18.9
Net periodic benefit cost	0.9	2.0	1.3
Amount recognized in OCI/(L)	3.2	1.0
Expected contributions	1.3
International
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	9.7	12.0	14.1
International | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	1.3	6.9	14.1
Actuarial loss (gain)	(86.8)	35.4
Accumulated benefit obligation	333.0	498.4
Net periodic benefit cost	10.7	16.9	18.6
Amount recognized in OCI/(L)	71.0	(14.1)
Expected contributions	20.6
Transformation Plan | International | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	1.3	6.9	$ 14.1
Settlement loss related to restructuring activities	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	$ 1.4	$ 2.3