DEBT - Schedule of Fair Value of Debt (Details) - USD ($) $ in Millions	Mar. 31, 2020	Jun. 30, 2019
2018 Coty Credit Agreement | Carrying Amount
Debt Instrument [Line Items]
Fair value of debt	$ 7,993.4	$ 6,281.4
2018 Coty Credit Agreement | Fair Value
Debt Instrument [Line Items]
Fair value of debt	6,296.6	6,058.9
Senior Unsecured Notes | Carrying Amount
Debt Instrument [Line Items]
Fair value of debt	1,431.7	1,459.1
Senior Unsecured Notes | Fair Value
Debt Instrument [Line Items]
Fair value of debt	$ 1,229.6	$ 1,439.6