DEBT - Schedule of Fair Value of Debt (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jun. 30, 2018
Carrying Amount | 2018 Coty Credit Agreement
Debt Instrument [Line Items]
Fair value of debt	$ 6,281.4	$ 6,130.1
Fair Value | 2018 Coty Credit Agreement
Debt Instrument [Line Items]
Fair value of debt	6,058.9	6,070.8
Senior Notes | Carrying Amount
Debt Instrument [Line Items]
Fair value of debt	1,459.1	1,482.3
Senior Notes | Fair Value
Debt Instrument [Line Items]
Fair value of debt	$ 1,439.6	$ 1,449.9