DEBT - Narrative (Details)							3 Months Ended
	Jul. 26, 2023 USD ($)	Jul. 11, 2023 USD ($)	Nov. 30, 2021	Jun. 16, 2021	Apr. 21, 2021	Apr. 05, 2018 USD ($)	Sep. 30, 2024 USD ($) fiscalQuarter	Sep. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	May 30, 2024 USD ($)	May 30, 2024 EUR (€)	Dec. 07, 2023 USD ($)	Sep. 19, 2023 EUR (€)	Jul. 11, 2023 EUR (€)	Dec. 07, 2022 USD ($)	Dec. 07, 2022 EUR (€)	Apr. 05, 2018 EUR (€)
Debt Instrument [Line Items]
Short-term debt							$ 0.0		$ 0
Long-term debt							3,998,400,000
Debt discount capitalized							0.0	$ 40,400,000
Senior Unsecured Notes
Debt Instrument [Line Items]
Redemption price, percentage						101.00%
Line of Credit
Debt Instrument [Line Items]
Deferred financing fees write-offs							$ 0.0	$ 5,200,000
Total net leverage ratio, material acquisition, number of fiscal quarters | fiscalQuarter							4
Total net leverage ratio, after material acquisition | fiscalQuarter							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
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]
Debt instrument, early redemption premium, percent of outstanding principal amount					1.00%
Debt instrument, base redemption price, percentage					100.00%
Long-term debt							$ 650,000,000.0		650,000,000.0
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]
Debt instrument, early redemption premium, percent of outstanding principal amount				1.00%
Debt instrument, base redemption price, percentage				100.00%
Long-term debt							781,200,000		748,100,000
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]
Debt instrument, early redemption premium, percent of outstanding principal amount			1.00%
Debt instrument, base redemption price, percentage			100.00%
Long-term debt							$ 500,000,000.0		500,000,000.0
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]
Debt instrument, early redemption premium, percent of outstanding principal amount							1.00%
Debt instrument, base redemption price, percentage							100.00%
Long-term debt							$ 750,000,000.0		750,000,000.0
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]
Debt instrument, early redemption premium, percent of outstanding principal amount							1.00%
Debt instrument, base redemption price, percentage							100.00%
Long-term debt							$ 558,000,000.0		534,300,000
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%
2026 Dollar Notes | Cash Tender Offers
Debt Instrument [Line Items]
Long-term debt										$ 323,000,000.0		$ 150,000,000.0			$ 77,000,000.0
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%
2026 Euro Notes | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt Instrument, face amount | €																	€ 250,000,000.0
Interest rate, stated percentage						4.75%											4.75%
2026 Euro Notes | Cash Tender Offers
Debt Instrument [Line Items]
Long-term debt															$ 72,200,000	€ 69,700,000
Letter of Credit
Debt Instrument [Line Items]
Undrawn letters of credit and bank guarantees							$ 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							$ 18,500,000		$ 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