DEBT - Schedule of Debt (Details) - USD ($) $ in Millions	Jun. 30, 2024	Jun. 30, 2023
Debt Instrument [Line Items]
Short-term debt	$ 0.0	$ 0.0
Long term debt	3,909.4
Brazilian Credit Facility	0.0	31.9
Finance lease obligations	4.3	7.1
Total debt	3,913.7	4,281.6
Less: Short-term debt and current portion of long-term debt	(3.0)	(57.9)
Total Long-term debt	3,910.7	4,223.7
Less: Unamortized financing fees and discounts on long-term debt	(68.9)	(45.5)
Total Long-term debt, net	$ 3,841.8	$ 4,178.2
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Long-term debt, net	Long-term debt, net
Senior Notes | 2026 Dollar Senior Secured Notes due April 2026
Debt Instrument [Line Items]
Long term debt	$ 650.0	$ 900.0
Senior Notes | 2026 Euro Senior Secured Notes due April 2026
Debt Instrument [Line Items]
Long term debt	748.1	761.0
Senior Notes | 2027 Euro Senior Secured Notes due May 2027
Debt Instrument [Line Items]
Long term debt	534.3	0.0
Senior Notes | 2028 Euro Senior Secured Notes due September 2028
Debt Instrument [Line Items]
Long term debt	534.3	0.0
Senior Notes | 2029 Dollar Senior Secured Notes due January 2029
Debt Instrument [Line Items]
Long term debt	500.0	500.0
Senior Notes | 2030 Dollar Senior Secured Notes due July 2030
Debt Instrument [Line Items]
Long term debt	750.0	0.0
Senior Notes | 2026 Dollar Notes due April 2026
Debt Instrument [Line Items]
Long term debt	0.0	473.0
Senior Notes | 2026 Euro Notes due April 2026
Debt Instrument [Line Items]
Long term debt	192.7	196.0
Line of Credit | Revolving credit facility | 2023 Coty Revolving Credit Facility due July 2028
Debt Instrument [Line Items]
Long term debt	0.0	0.0
Line of Credit | Revolving credit facility | 2021 Coty Revolving Credit Facility due April 2025
Debt Instrument [Line Items]
Long term debt	0.0	228.9
Line of Credit | Term Loan | 2018 Coty Term B Facility due April 2025
Debt Instrument [Line Items]
Long term debt	$ 0.0	$ 1,183.7