DEBT - Schedule of Debt (Details) - USD ($) $ in Millions	Mar. 31, 2024	Jun. 30, 2023
Debt Instrument [Line Items]
Short-term debt	$ 1.5	$ 0.0
Long-term debt	3,965.8
Brazilian Credit Facilities	0.0	31.9
Finance lease obligations	5.0	7.1
Total debt	3,972.3	4,281.6
Less: Short-term debt and current portion of long-term debt	(4.4)	(57.9)
Total Long-term debt	3,967.9	4,223.7
Less: Unamortized financing fees and discounts on long-term debt	(65.6)	(45.5)
Total Long-term debt, net	3,902.3	4,178.2
Senior Secured Notes | 2026 Dollar Senior Secured Notes due April 2026
Debt Instrument [Line Items]
Long-term debt	650.0	900.0
Senior Secured Notes | 2026 Euro Senior Secured Notes due April 2026
Debt Instrument [Line Items]
Long-term debt	754.3	761.0
Senior Secured Notes | 2028 Euro Senior Secured Notes due September 2028
Debt Instrument [Line Items]
Long-term debt	538.8	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	255.4	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	323.0	473.0
Line of Credit | 2026 Euro Notes due April 2026 | Term Loan
Debt Instrument [Line Items]
Long-term debt	$ 194.3	$ 196.0