CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Class A	Total Coty Inc. Stockholders’ Equity	Preferred Stock	Common Stock Common Class A	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive (Loss) Income	Treasury Stock	Noncontrolling Interest
Beginning balance (in shares) at Jun. 30, 2022				1.5
Beginning balance at Jun. 30, 2022	$ 3,345.8		$ 3,154.5	$ 0.0	$ 9.0	$ 10,805.8	$ (5,496.1)	$ (717.9)	$ (1,446.3)	$ 191.3
Beginning balance (in shares) at Jun. 30, 2022					905.5
Beginning balance (in shares) at Jun. 30, 2022									66.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cancellation of Preferred Stock (in shares)				(0.5)
Reacquired Class A Common Stock for employee taxes and cancellation of restricted stock (in shares)									0.2
Exercise of employee stock options and restricted stock units and issuance of restricted stock (in shares)		13.8			13.8
Exercise of employee stock options and restricted stock units and issuance of restricted stock	0.9		0.9		$ 0.1	0.8
Shares withheld for employee taxes	(13.6)		(13.6)			(13.6)
Share-based compensation expense	134.7		134.7			134.7
Equity investment contribution for share-based compensation	4.6		4.6			4.6
Changes in dividends accrued	0.1		0.1			0.1
Dividends Accrued - Convertible Series B Preferred Stock	(13.2)		(13.2)			(13.2)
Net income (loss)	506.4		508.2				508.2			(1.8)
Other comprehensive loss	55.8		55.5					55.5		0.3
Distribution to noncontrolling interests, net	(3.5)									(3.5)
Adjustment of redeemable noncontrolling interests to redemption value	(20.6)		(20.6)			(20.6)
Ending balance (in shares) at Jun. 30, 2023				1.0
Ending balance at Jun. 30, 2023	3,997.4		3,811.1	$ 0.0	$ 9.1	10,898.6	(4,987.9)	(662.4)	$ (1,446.3)	186.3
Ending balance (in shares) at Jun. 30, 2023					919.3
Ending balance (in shares) at Jun. 30, 2023									66.5
Beginning balance, redeemable noncontrolling interest at Jun. 30, 2022	69.8
Beginning balance, convertible stock at Jun. 30, 2022	142.4
Increase (Decrease) in Redeemable Noncontrolling Interests [Roll Forward]
Dividends Accrued - Convertible Series B Preferred Stock	13.2
Dividends Paid- Convertible Series B Preferred Stock	(13.2)
Net income (loss)	16.8
Other comprehensive loss	0.1
Distribution to noncontrolling interests, net	(13.8)
Adjustment of redeemable noncontrolling interests to redemption value	20.6
Ending balance, redeemable noncontrolling interest at Jun. 30, 2023	93.5
Ending balance, convertible stock at Jun. 30, 2023	142.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A Common Stock in connection with global offering, net of offering costs (in shares)					33.0
Issuance of Class A Common Stock in connection with global offering, net of offering costs	342.4		342.4		$ 0.3	342.1
Reacquired Class A Common Stock for employee taxes and cancellation of restricted stock (in shares)									0.8
Exercise of employee stock options and restricted stock units and issuance of restricted stock (in shares)		9.8			9.8
Exercise of employee stock options and restricted stock units and issuance of restricted stock	13.5		13.5		$ 0.2	13.3
Shares withheld for employee taxes	(21.0)		(21.0)			(21.0)
Share-based compensation expense	88.5		88.5			88.5
Equity investment contribution for share-based compensation	2.1		2.1			2.1
Repurchase of Class A Common Stock pursuant to forward repurchase contracts (in shares)									27.0
Repurchase of Class A Common Stock pursuant to forward repurchase contracts	(350.6)		(350.6)						$ (350.6)
Changes in dividends accrued	0.0
Dividends Accrued - Convertible Series B Preferred Stock	(13.2)		(13.2)			(13.2)
Net income (loss)	94.7		89.4				89.4			5.3
Other comprehensive loss	(132.7)		(132.7)					(132.7)
Distribution to noncontrolling interests, net	(7.0)									(7.0)
Adjustment of redeemable noncontrolling interests to redemption value	$ (2.4)		(2.4)			(2.4)
Ending balance (in shares) at Jun. 30, 2024	1.0			1.0
Ending balance at Jun. 30, 2024	$ 4,011.7		3,827.1	$ 0.0	$ 9.6	11,308.0	(4,898.5)	(795.1)	$ (1,796.9)	184.6
Ending balance (in shares) at Jun. 30, 2024	867.8				962.1
Ending balance (in shares) at Jun. 30, 2024	94.3								94.3
Increase (Decrease) in Redeemable Noncontrolling Interests [Roll Forward]
Dividends Accrued - Convertible Series B Preferred Stock	$ 13.2
Dividends Paid- Convertible Series B Preferred Stock	(13.2)
Net income (loss)	14.7
Distribution to noncontrolling interests, net	(17.0)
Adjustment of redeemable noncontrolling interests to redemption value	2.4
Ending balance, redeemable noncontrolling interest at Jun. 30, 2024	93.6
Ending balance, convertible stock at Jun. 30, 2024	142.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of employee stock options and restricted stock units and issuance of restricted stock (in shares)		4.4			4.4
Shares withheld for employee taxes	(13.5)		(13.5)			(13.5)
Share-based compensation expense	49.9		49.9			49.9
Equity investment contribution for share-based compensation	0.6		0.6			0.6
Changes in dividends accrued	0.0
Dividends Accrued - Convertible Series B Preferred Stock	(13.2)		(13.2)			(13.2)
Net income (loss)	(362.6)		(367.9)				(367.9)			5.3
Other comprehensive loss	61.6		61.7					61.7		(0.1)
Distribution to noncontrolling interests, net	(13.5)									(13.5)
Adjustment of redeemable noncontrolling interests to redemption value	$ (2.0)		(2.0)			(2.0)
Ending balance (in shares) at Jun. 30, 2025	1.0			1.0
Ending balance at Jun. 30, 2025	$ 3,719.0		$ 3,542.7	$ 0.0	$ 9.6	$ 11,329.8	$ (5,266.4)	$ (733.4)	$ (1,796.9)	$ 176.3
Ending balance (in shares) at Jun. 30, 2025	872.3	872.3			966.5
Ending balance (in shares) at Jun. 30, 2025	94.3								94.3
Increase (Decrease) in Redeemable Noncontrolling Interests [Roll Forward]
Dividends Accrued - Convertible Series B Preferred Stock	$ 13.2
Dividends Paid- Convertible Series B Preferred Stock	(13.2)
Net income (loss)	12.4
Other comprehensive loss	0.2
Distribution to noncontrolling interests, net	(14.0)
Adjustment of redeemable noncontrolling interests to redemption value	2.0
Ending balance, redeemable noncontrolling interest at Jun. 30, 2025	94.2
Ending balance, convertible stock at Jun. 30, 2025	$ 142.4