DEBT - Schedule of Fair Value of Debt (Details) - USD ($) $ in Millions	Jun. 30, 2025	Jun. 30, 2024
Carrying Amount | 2018 Coty Credit Agreement
Debt Instrument [Line Items]
Fair value of debt	$ 407.3	$ 0.0
Fair Value | 2018 Coty Credit Agreement
Debt Instrument [Line Items]
Fair value of debt	407.3	0.0
Senior Secured Notes | Carrying Amount
Debt Instrument [Line Items]
Fair value of debt	3,591.4	3,716.7
Senior Secured Notes | Fair Value
Debt Instrument [Line Items]
Fair value of debt	3,632.7	3,719.7
Senior Unsecured Notes | Carrying Amount
Debt Instrument [Line Items]
Fair value of debt	0.0	192.7
Senior Unsecured Notes | Fair Value
Debt Instrument [Line Items]
Fair value of debt	$ 0.0	$ 192.8