DEBT - Schedule of Long Term Debt Facilities (Details)	12 Months Ended
	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 EUR (€)	Jun. 30, 2024 EUR (€)	May 30, 2024 USD ($)	Sep. 19, 2023 EUR (€)	Jul. 26, 2023 USD ($)	Nov. 30, 2021 USD ($)	Jun. 16, 2021 EUR (€)	Apr. 21, 2021 USD ($)	Apr. 05, 2018 EUR (€)
2027 Euro Senior Secured Notes due May 2027
Line of Credit Facility [Line Items]
Borrowing capacity					$ 493,700,000
2028 Euro Senior Secured Notes due September 2028
Line of Credit Facility [Line Items]
Borrowing capacity | €						€ 493,800,000
Senior Notes | 2027 Euro Senior Secured Notes due May 2027
Line of Credit Facility [Line Items]
Borrowing capacity					$ 500,000,000
Stated interest rate (as a percent)					4.50%
Senior Notes | 2028 Euro Senior Secured Notes due September 2028
Line of Credit Facility [Line Items]
Borrowing capacity | €						€ 500,000,000
Stated interest rate (as a percent)						5.75%
Senior Notes | 2029 Dollar Senior Secured Notes due January 2029
Line of Credit Facility [Line Items]
Borrowing capacity								$ 500,000,000.0
Stated interest rate (as a percent)								4.75%
Senior Notes | 2030 Dollar Senior Secured Notes due July 2030
Line of Credit Facility [Line Items]
Borrowing capacity							$ 750,000,000.0
Stated interest rate (as a percent)							6.625%
Senior Notes | 2026 Dollar Senior Secured Notes due April 2026
Line of Credit Facility [Line Items]
Borrowing capacity										$ 900,000,000.0
Stated interest rate (as a percent)										5.00%
Senior Notes | 2026 Euro Senior Secured Notes due April 2026
Line of Credit Facility [Line Items]
Borrowing capacity | €									€ 700,000,000
Stated interest rate (as a percent)									3.875%
Senior Notes | 2026 Euro Notes
Line of Credit Facility [Line Items]
Borrowing capacity | €											€ 250,000,000.0
Stated interest rate (as a percent)											4.75%
Senior Notes | Term Loan | 2027 Euro Senior Secured Notes due May 2027
Line of Credit Facility [Line Items]
Borrowing capacity	$ 500,000,000.0	$ 500,000,000.0
Stated interest rate (as a percent)	4.50%	4.50%	4.50%	4.50%
Applicable interest rate spread	4.50%	4.50%	4.50%	4.50%
Senior Notes | Term Loan | 2028 Euro Senior Secured Notes due September 2028
Line of Credit Facility [Line Items]
Borrowing capacity	$ 500,000,000.0	$ 500,000,000.0
Stated interest rate (as a percent)	5.75%	5.75%	5.75%	5.75%
Applicable interest rate spread	5.75%	5.75%	5.75%	5.75%
Senior Notes | Term Loan | 2029 Dollar Senior Secured Notes due January 2029
Line of Credit Facility [Line Items]
Borrowing capacity	$ 500,000,000.0	$ 500,000,000.0
Stated interest rate (as a percent)	4.75%	4.75%	4.75%	4.75%
Applicable interest rate spread	4.75%	4.75%	4.75%	4.75%
Senior Notes | Term Loan | 2030 Dollar Senior Secured Notes due July 2030
Line of Credit Facility [Line Items]
Borrowing capacity	$ 750,000,000.0	$ 750,000,000.0
Stated interest rate (as a percent)	6.625%	6.625%	6.625%	6.625%
Applicable interest rate spread	6.625%	6.625%	6.625%	6.625%
Senior Notes | Term Loan | 2026 Dollar Senior Secured Notes due April 2026
Line of Credit Facility [Line Items]
Borrowing capacity	$ 350,000,000.0	$ 350,000,000.0
Stated interest rate (as a percent)	5.00%	5.00%	5.00%	5.00%
Applicable interest rate spread	5.00%	5.00%	5.00%	5.00%
Senior Notes | Term Loan | 2026 Euro Senior Secured Notes due April 2026
Line of Credit Facility [Line Items]
Borrowing capacity | €			€ 700,000,000.0	€ 700,000,000.0
Stated interest rate (as a percent)	3.875%	3.875%	3.875%	3.875%
Applicable interest rate spread	3.875%	3.875%	3.875%	3.875%
Senior Notes | Term Loan | 2026 Euro Notes
Line of Credit Facility [Line Items]
Borrowing capacity | €			€ 0	€ 0
Stated interest rate (as a percent)	4.75%	4.75%	4.75%	4.75%
Senior Notes | Revolving credit facility | 2023 Coty Revolving Credit Facility due July 2028
Line of Credit Facility [Line Items]
Borrowing capacity	$ 1,670,000,000			€ 300,000,000.0
Applicable interest rate spread	1.50%	1.50%	1.50%	1.50%
Line of Credit | Revolving credit facility | 2023 Coty Revolving Credit Facility due July 2028 | SOFR | Minimum
Line of Credit Facility [Line Items]
Margin percentage	1.00%	1.00%
Line of Credit | Revolving credit facility | 2023 Coty Revolving Credit Facility due July 2028 | SOFR | Maximum
Line of Credit Facility [Line Items]
Margin percentage	2.00%	2.00%
Line of Credit | Revolving credit facility | 2023 Coty Revolving Credit Facility due July 2028 | Base Rate | Minimum
Line of Credit Facility [Line Items]
Margin percentage	0.00%	0.00%
Line of Credit | Revolving credit facility | 2023 Coty Revolving Credit Facility due July 2028 | Base Rate | Maximum
Line of Credit Facility [Line Items]
Margin percentage	1.00%	1.00%
Line of Credit | Revolving credit facility | Coty Credit Agreement
Line of Credit Facility [Line Items]
Unused commitment fee percentage	0.25%	0.25%
Line of Credit | Revolving credit facility | Coty Credit Agreement | Minimum
Line of Credit Facility [Line Items]
Unused commitment fee percentage	0.10%
Line of Credit | Revolving credit facility | Coty Credit Agreement | Maximum
Line of Credit Facility [Line Items]
Unused commitment fee percentage	0.35%