DEBT - Narrative (Details)		1 Months Ended	3 Months Ended		9 Months Ended
	Jul. 26, 2023 USD ($)	Jul. 31, 2023 USD ($)	Mar. 31, 2025 USD ($) fiscalQuarter	Mar. 31, 2024 USD ($)	Mar. 31, 2025 USD ($) fiscalQuarter	Mar. 31, 2024 USD ($)	Dec. 10, 2024 USD ($)	Dec. 06, 2024 USD ($)	Dec. 06, 2024 EUR (€)	Jun. 30, 2024 USD ($)	May 30, 2024 USD ($)	May 30, 2024 EUR (€)	Dec. 07, 2023 USD ($)	Sep. 19, 2023 EUR (€)	Jul. 31, 2023 EUR (€)	Apr. 05, 2018 USD ($)	Apr. 05, 2018 EUR (€)
Debt Instrument [Line Items]
Short-term debt			$ 5,100,000		$ 5,100,000					$ 0
Long-term debt			3,843,200,000		3,843,200,000
Debt discount capitalized			0.0	$ 0.0	0.0	$ 40,400,000
Line of Credit
Debt Instrument [Line Items]
Deferred financing fees write-offs			$ 0.0	$ 0.0	$ 1,600,000	$ 7,400,000
Total net leverage ratio, material acquisition, number of fiscal quarters | fiscalQuarter			4		4
Total net leverage ratio, after material acquisition | fiscalQuarter			2		2
Line of Credit | Maximum
Debt Instrument [Line Items]
Applicable leverage ratio following the closing of any material acquisition					5.95
Line of Credit | Minimum
Debt Instrument [Line Items]
Applicable leverage ratio following the closing of any material acquisition					1.00
2026 Euro Notes | Senior Unsecured Notes
Debt Instrument [Line Items]
Long-term debt								$ 190,600,000	€ 180,300,000		$ 323,000,000.0		$ 150,000,000.0
Debt Instrument, face amount | €																	€ 250,000,000.0
Interest rate, stated percentage																4.75%	4.75%
2026 Dollar Senior Secured Notes | Cash Tender Offers
Debt Instrument [Line Items]
Long-term debt							$ 300,000,000.0
2030 Dollar Senior Secured Notes, due April 2030 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt Instrument, face amount	$ 750,000,000.0
Interest rate, stated percentage	6.625%
Proceeds from issuance of senior long-term debt	$ 740,600,000
2028 Euro Senior Secured Notes
Debt Instrument [Line Items]
Debt Instrument, face amount | €														€ 493,800,000
2028 Euro Senior Secured Notes | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt Instrument, face amount | €														€ 500,000,000
Interest rate, stated percentage														5.75%
2027 Euro Senior Secured Notes
Debt Instrument [Line Items]
Debt Instrument, face amount | €												€ 493,700,000
2027 Euro Senior Secured Notes | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt Instrument, face amount | €												€ 500,000,000
Interest rate, stated percentage											4.50%	4.50%
2026 Dollar Senior Secured Notes due April 2026 | Senior Unsecured Notes
Debt Instrument [Line Items]
Long-term debt			$ 350,000,000.0		$ 350,000,000.0					650,000,000.0
Debt instrument, early redemption premium, percent of outstanding principal amount					1.00%
Debt instrument, base redemption price, percentage					100.00%
2026 Dollar Senior Secured Notes due April 2026 | Senior Unsecured Notes | Bund Rate
Debt Instrument [Line Items]
Basis spread on variable rate, percentage					0.50%
2026 Euro Senior Secured Notes due April 2026 | Senior Unsecured Notes
Debt Instrument [Line Items]
Long-term debt			758,300,000		$ 758,300,000					748,100,000
Debt instrument, early redemption premium, percent of outstanding principal amount					1.00%
Debt instrument, base redemption price, percentage					100.00%
2026 Euro Senior Secured Notes due April 2026 | Senior Unsecured Notes | US Treasury (UST) Interest Rate
Debt Instrument [Line Items]
Basis spread on variable rate, percentage					0.50%
2029 Dollar Senior Secured Notes due January 2029 | Senior Unsecured Notes
Debt Instrument [Line Items]
Long-term debt			500,000,000.0		$ 500,000,000.0					500,000,000.0
Debt instrument, early redemption premium, percent of outstanding principal amount					1.00%
Debt instrument, base redemption price, percentage					100.00%
2029 Dollar Senior Secured Notes due January 2029 | Senior Unsecured Notes | US Treasury (UST) Interest Rate
Debt Instrument [Line Items]
Basis spread on variable rate, percentage					0.50%
2030 Dollar Senior Secured Notes due July 2030 | Senior Unsecured Notes
Debt Instrument [Line Items]
Long-term debt			750,000,000.0		$ 750,000,000.0					750,000,000.0
Debt instrument, early redemption premium, percent of outstanding principal amount					1.00%
Debt instrument, base redemption price, percentage					100.00%
2030 Dollar Senior Secured Notes due July 2030 | Senior Unsecured Notes | US Treasury (UST) Interest Rate
Debt Instrument [Line Items]
Basis spread on variable rate, percentage					0.50%
2028 Euro Senior Secured Notes due September 2028 | Senior Unsecured Notes
Debt Instrument [Line Items]
Long-term debt			541,600,000		$ 541,600,000					534,300,000
Debt instrument, early redemption premium, percent of outstanding principal amount					1.00%
Debt instrument, base redemption price, percentage					100.00%
2028 Euro Senior Secured Notes due September 2028 | Senior Unsecured Notes | US Treasury (UST) Interest Rate
Debt Instrument [Line Items]
Basis spread on variable rate, percentage					0.50%
2018 Coty Term A Facility
Debt Instrument [Line Items]
Aggregate principal amount | €															€ 2,035,000,000
2018 Coty Term A Facility | Line of Credit
Debt Instrument [Line Items]
Aggregate principal amount		$ 1,000,000,000
2018 Coty Term B Facility
Debt Instrument [Line Items]
Aggregate principal amount | €															850,000,000.0
2018 Coty Term B Facility | Line of Credit
Debt Instrument [Line Items]
Aggregate principal amount		$ 1,400,000,000
2018 Coty Credit Agreement | Line of Credit
Debt Instrument [Line Items]
Credit spread adjustment		0.10%
2018 Coty Credit Agreement | Line of Credit | Refinancing in Dollars and Certain Other Currencies
Debt Instrument [Line Items]
Aggregate principal amount		$ 1,670,000,000
2018 Coty Credit Agreement | Line of Credit | Refinancing in Euros
Debt Instrument [Line Items]
Aggregate principal amount | €															€ 300,000,000
2026 Dollar Notes | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt Instrument, face amount																$ 550,000,000.0
Interest rate, stated percentage																6.50%	6.50%
2023 Euro Notes | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt Instrument, face amount | €																	€ 550,000,000.0
Interest rate, stated percentage																4.00%	4.00%
Letter of Credit
Debt Instrument [Line Items]
Undrawn letters of credit and bank guarantees			4,100,000		$ 4,100,000					4,100,000
Letter of Credit | 2023 Coty Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Aggregate principal amount		150,000,000.0
Bank Guarantee
Debt Instrument [Line Items]
Undrawn letters of credit and bank guarantees			$ 16,900,000		$ 16,900,000					$ 18,400,000
Swingline loans | 2023 Coty Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Aggregate principal amount		150,000,000.0
Incurrence Incremental Facilities | 2023 Coty Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Aggregate principal amount		$ 1,700,000,000
Net leverage ratio		3.00