DEBT - Schedule of Debt (Details) - USD ($) $ in Millions	Sep. 30, 2017	Jun. 30, 2017
Debt Instrument [Line Items]
Short-term debt	$ 3.3	$ 3.7
Long-term debt	7,833.9
Other long-term debt and capital lease obligations	1.4	1.7
Total debt	7,838.6	7,215.6
Less: Short-term debt and current portion of long-term debt	(223.3)	(209.1)
Total Long-term debt	7,615.3	7,006.5
Less: Unamortized deferred financing costs	(63.2)	(67.6)
Less: Discount on Long-term debt	(10.2)	(10.6)
Total Long-term debt, net	7,541.9	6,928.3
Debt issuance costs, net	63.2	67.6
Line of Credit | Galleria Revolving Credit Facility due September 2021 | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	0.0	0.0
Debt issuance costs line of credit arrangement	4.0	4.2
Line of Credit | Galleria Term Loan A Facility due September 2021 | Term Loan
Debt Instrument [Line Items]
Long-term debt	944.3	944.3
Less: Unamortized deferred financing costs	(2.5)	(2.7)
Debt issuance costs, net	2.5	2.7
Line of Credit | Galleria Term Loan B Facility due September 2023 | Term Loan
Debt Instrument [Line Items]
Long-term debt	1,000.0	1,000.0
Less: Unamortized deferred financing costs	(2.8)	(3.0)
Debt issuance costs, net	2.8	3.0
Line of Credit | Coty Revolving Credit Facility due October 2020 | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	1,436.8	810.0
Less: Unamortized deferred financing costs	(16.2)	(17.5)
Debt issuance costs, net	16.2	17.5
Line of Credit | Coty Term Loan A Facility due October 2020 | Term Loan
Debt Instrument [Line Items]
Long-term debt	1,773.3	1,792.8
Less: Unamortized deferred financing costs	(30.9)	(33.2)
Debt issuance costs, net	30.9	33.2
Line of Credit | Coty Term Loan A Facility due October 2021 | Term Loan
Debt Instrument [Line Items]
Long-term debt	938.4	950.6
Line of Credit | Coty Term Loan B Facility due October 2022 | Term Loan
Debt Instrument [Line Items]
Long-term debt	1,741.1	1,712.5
Less: Unamortized deferred financing costs	(10.8)	(11.3)
Debt issuance costs, net	$ 10.8	$ 11.3