DEBT - Schedule of Fair Value of Debt (Details) - USD ($) $ in Millions	Dec. 31, 2017	Jun. 30, 2017
Galleria Credit Agreement | Carrying Amount
Debt Instrument [Line Items]
Fair value of debt	$ 2,295.0	$ 1,944.3
Galleria Credit Agreement | Fair Value
Debt Instrument [Line Items]
Fair value of debt	2,300.3	1,944.0
Coty Credit Agreement | Carrying Amount
Debt Instrument [Line Items]
Fair value of debt	5,207.9	5,265.9
Coty Credit Agreement | Fair Value
Debt Instrument [Line Items]
Fair value of debt	$ 5,219.9	$ 5,275.4