DEBT - Schedule of Fair Value of Debt (Details) - USD ($) $ in Millions	Mar. 31, 2021	Jun. 30, 2020
2018 Coty Credit Agreement | Carrying Amount
Debt Instrument [Line Items]
Fair value of debt	$ 3,934.8	$ 6,706.3
2018 Coty Credit Agreement | Fair Value
Debt Instrument [Line Items]
Fair value of debt	3,810.5	5,962.3
Senior Unsecured Notes | Carrying Amount
Debt Instrument [Line Items]
Fair value of debt	1,486.3	1,449.4
Senior Unsecured Notes | Fair Value
Debt Instrument [Line Items]
Fair value of debt	$ 1,466.6	$ 1,270.3