EMPLOYEE BENEFIT PLANS - Fair Value of Plan Assets (Details) - USD ($) $ in Millions	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	$ 101.5	$ 159.1	$ 274.6
International | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	101.5	159.1	274.1
International | Pension Plans | Level 3
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	33.6	75.2	$ 148.0
International | Pension Plans | Recurring
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	101.5	159.1
International | Pension Plans | Recurring | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	67.9	83.9
International | Pension Plans | Recurring | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0.0	0.0
International | Pension Plans | Recurring | Level 3
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	33.6	75.2
International | Pension Plans | Recurring | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	32.5	50.7
International | Pension Plans | Recurring | Equity securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	32.5	50.7
International | Pension Plans | Recurring | Equity securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0.0	0.0
International | Pension Plans | Recurring | Equity securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0.0	0.0
International | Pension Plans | Recurring | Corporate securities
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	33.8	33.0
International | Pension Plans | Recurring | Corporate securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	33.8	33.0
International | Pension Plans | Recurring | Corporate securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0.0	0.0
International | Pension Plans | Recurring | Corporate securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0.0	0.0
International | Pension Plans | Recurring | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	1.6	0.2
International | Pension Plans | Recurring | Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	1.6	0.2
International | Pension Plans | Recurring | Cash and cash equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0.0	0.0
International | Pension Plans | Recurring | Cash and cash equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0.0	0.0
International | Pension Plans | Recurring | Insurance contracts and other
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	33.6	75.2
International | Pension Plans | Recurring | Insurance contracts and other | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0.0	0.0
International | Pension Plans | Recurring | Insurance contracts and other | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0.0	0.0
International | Pension Plans | Recurring | Insurance contracts and other | Level 3
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	$ 33.6	$ 75.2