DEBT - Schedule of Debt (Details) - USD ($) $ in Millions	Sep. 30, 2023	Jun. 30, 2023
Debt Instrument [Line Items]
Short-term debt	$ 6.0	$ 0.0
Long-term debt	4,199.7
Brazilian Credit Facilities	31.9	31.9
Other long-term debt and finance lease obligations	6.4	7.1
Total debt	4,212.1	4,281.6
Less: Short-term debt and current portion of long-term debt	(40.8)	(57.9)
Total Long-term debt	4,171.3	4,223.7
Less: Unamortized financing fees and discounts on long-term debt	(75.9)	(45.5)
Total Long-term debt, net	4,095.4	4,178.2
Senior Secured Notes | 2026 Dollar Senior Secured Notes due April 2026
Debt Instrument [Line Items]
Long-term debt	900.0	900.0
Senior Secured Notes | 2026 Euro Senior Secured Notes due April 2026
Debt Instrument [Line Items]
Long-term debt	740.3	761.0
Senior Secured Notes | 2028 Euro Senior Secured Notes due September 2028
Debt Instrument [Line Items]
Long-term debt	528.8	0.0
Senior Secured Notes | 2029 Dollar Senior Secured Notes due January 2029
Debt Instrument [Line Items]
Long-term debt	500.0	500.0
Senior Secured Notes | 2030 Dollar Senior Secured Notes due July 2030
Debt Instrument [Line Items]
Long-term debt	750.0	0.0
Line of Credit | 2023 Coty Revolving Credit Facility due July 2028 | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	85.0	0.0
Line of Credit | 2021 Coty Revolving Credit Facility due April 2025 | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	0.0	228.9
Line of Credit | 2018 Coty Term B Facility due April 2025 | Term Loan
Debt Instrument [Line Items]
Long-term debt	0.0	1,183.7
Line of Credit | 2026 Dollar Notes due April 2026 | Term Loan
Debt Instrument [Line Items]
Long-term debt	473.0	473.0
Line of Credit | 2026 Euro Notes due April 2026 | Term Loan
Debt Instrument [Line Items]
Long-term debt	$ 190.7	$ 196.0