DEBT - Schedule of Debt (Details) - USD ($) $ in Millions	Dec. 31, 2019	Jun. 30, 2019
Debt Instrument [Line Items]
Short-term debt	$ 0.1	$ 4.2
Long-term debt	7,493.7
Other long-term debt and capital lease obligations	0.9	1.1
Total debt	7,494.7	7,745.8
Less: Short-term debt and current portion of long-term debt	(188.0)	(193.8)
Total Long-term debt	7,306.7	7,552.0
Less: Unamortized debt issuance costs	(62.9)	(71.3)
Less: Discount on Long-term debt	(10.0)	(10.8)
Total Long-term debt, net	7,233.8	7,469.9
Line of Credit \| 2018 Coty Revolving Credit Facility due April 2023 \| Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	694.9	792.1
Line of Credit \| 2018 Coty Term A Facility due April 2023 \| Term Loan
Debt Instrument [Line Items]
Long-term debt	3,034.8	3,147.0
Line of Credit \| 2018 Coty Term B Facility due April 2025 \| Term Loan
Debt Instrument [Line Items]
Long-term debt	2,317.4	2,342.3
Line of Credit \| 2026 Dollar Notes due April 2026 \| Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	550.0	550.0
Line of Credit \| 2023 Euro Notes due April 2023 \| Term Loan
Debt Instrument [Line Items]
Long-term debt	616.4	625.0
Line of Credit \| 2026 Euro Notes due April 2026 \| Term Loan
Debt Instrument [Line Items]
Long-term debt	$ 280.2	$ 284.1

Long-term Debt and Capital Lease Obligations, Gross

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Other Long-Term Debt And Capital Lease Obligations

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Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, after accumulated amortization, of debt discount.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of long-term debt and lease obligation, including portion classified as current.

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