DEBT - Schedule of Debt (Details) - USD ($) $ in Millions	Dec. 31, 2023	Jun. 30, 2023
Debt Instrument [Line Items]
Short-term debt	$ 6.0	$ 0.0
Long-term debt	3,750.1
Brazilian Credit Facilities	0.0	31.9
Other long-term debt and finance lease obligations	5.7	7.1
Total debt	3,761.8	4,281.6
Less: Short-term debt and current portion of long-term debt	(8.9)	(57.9)
Total Long-term debt	3,752.9	4,223.7
Less: Unamortized financing fees and discounts on long-term debt	(70.0)	(45.5)
Total Long-term debt, net	3,682.9	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	774.4	761.0
Senior Secured Notes | 2028 Euro Senior Secured Notes due September 2028
Debt Instrument [Line Items]
Long-term debt	553.2	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	0.0	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	323.0	473.0
Line of Credit | 2026 Euro Notes due April 2026 | Term Loan
Debt Instrument [Line Items]
Long-term debt	$ 199.5	$ 196.0