EMPLOYEE BENEFIT PLANS - Fair Value of Plan Assets (Details) - USD ($) $ in Millions	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	$ 121.0	$ 101.5	$ 159.1
International | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	120.9	101.5	159.1
International | Pension Plans | Level 3
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	51.4	33.6	$ 75.2
International | Pension Plans | Recurring
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	121.0	101.5
International | Pension Plans | Recurring | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	69.6	67.9
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	51.4	33.6
International | Pension Plans | Recurring | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	32.1	32.5
International | Pension Plans | Recurring | Equity securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	32.1	32.5
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	37.3	33.8
International | Pension Plans | Recurring | Corporate securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	37.3	33.8
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	0.2	1.6
International | Pension Plans | Recurring | Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0.2	1.6
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	51.4	33.6
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	$ 51.4	$ 33.6