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EMPLOYEE BENEFIT PLANS - Schedule of Changes in Plan Assets and Benefit Obligations Recognized in OCI (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Defined Benefit Plan Disclosure [Line Items]    
Net actuarial gain (loss) $ 18.6 $ 10.0
Amortization or curtailment recognition of prior service (credit) cost (0.2) (0.1)
Recognized net actuarial (gain) loss (5.4) (4.9)
Prior service credit (cost) 0.4 (0.1)
Effect of exchange rates (2.2) 5.3
Total recognized in OCI/(L) 11.2 10.2
Other Post-Employment Benefits    
Defined Benefit Plan Disclosure [Line Items]    
Net actuarial gain (loss) 1.6 1.0
Amortization or curtailment recognition of prior service (credit) cost 0.0 0.0
Recognized net actuarial (gain) loss (3.2) (3.3)
Prior service credit (cost) 0.0 0.0
Effect of exchange rates (0.1) 0.3
Total recognized in OCI/(L) (1.7) (2.0)
United States | Pension Plans    
Defined Benefit Plan Disclosure [Line Items]    
Net actuarial gain (loss) 0.0 0.5
Amortization or curtailment recognition of prior service (credit) cost 0.0 0.0
Recognized net actuarial (gain) loss (0.6) 0.1
Prior service credit (cost) 0.0 0.0
Effect of exchange rates 0.0 0.0
Total recognized in OCI/(L) (0.6) 0.6
International | Pension Plans    
Defined Benefit Plan Disclosure [Line Items]    
Net actuarial gain (loss) 17.0 8.5
Amortization or curtailment recognition of prior service (credit) cost (0.2) (0.1)
Recognized net actuarial (gain) loss (1.6) (1.7)
Prior service credit (cost) 0.4 (0.1)
Effect of exchange rates (2.1) 5.0
Total recognized in OCI/(L) $ 13.5 $ 11.6