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, 2021				1.5
Beginning balance at Jun. 30, 2021	$ 3,062.2		$ 2,860.7	$ 0.0	$ 8.3	$ 10,376.2	$ (5,755.6)	$ (321.9)	$ (1,446.3)	$ 201.5
Beginning balance (in shares) at Jun. 30, 2021					832.3
Beginning balance (in shares) at Jun. 30, 2021									66.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of employee stock options and restricted stock units and issuance of restricted stock (in shares)		3.3			3.3
Shares withheld for employee taxes	(12.7)		(12.7)			(12.7)
Share based compensation expense	195.4		195.4			195.4
Equity Investment contribution for share-based compensation	0.7		0.7			0.7
Changes in dividends accrued	0.8		0.8			0.8
Conversion of Convertible Series B Preferred Stock (in shares)					69.9
Conversion of Convertible Series B Preferred Stock	429.5		429.5		$ 0.7	428.8
Dividends Accrued- Convertible Series B Preferred Stock	(35.2)		(35.2)			(35.2)
Deemed Dividends and Contributions- Convertible Series B Preferred Stock	(163.1)		(163.1)			(163.1)
Net income (loss)	254.4		259.5				259.5			(5.1)
Other comprehensive income	(396.5)		(396.0)					(396.0)		(0.5)
Other comprehensive (loss) income	(396.9)
Distribution to noncontrolling interests, net	(4.6)									(4.6)
Adjustment of redeemable noncontrolling interests to redemption value	14.9		14.9			14.9
Ending balance (in shares) at Jun. 30, 2022				1.5
Ending 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
Ending balance (in shares) at Jun. 30, 2022					905.5
Ending balance (in shares) at Jun. 30, 2022									66.3
Beginning balance, redeemable noncontrolling interest at Jun. 30, 2021	84.1
Beginning balance, convertible stock at Jun. 30, 2021	1,036.3
Increase (Decrease) in Redeemable Noncontrolling Interests [Roll Forward]
Conversion of Convertible Series B Preferred Stock	(429.5)
Exchange Transaction	(606.9)
Dividends Accrued - Convertible Series B Preferred Stock	35.2
Deemed Dividends and Contributions- Convertible Series B Preferred Stock	163.1
Dividends Paid- Convertible Series B Preferred Stock	(55.8)
Net income (loss)	13.3
Other comprehensive loss	(0.4)
Distribution to noncontrolling interests, net	(12.3)
Adjustment of redeemable noncontrolling interests to redemption value	(14.9)
Ending balance, redeemable noncontrolling interest at Jun. 30, 2022	69.8
Ending balance, convertible stock at Jun. 30, 2022	142.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cancellation of Preferred Stock (in shares)				0.5
Cancellation of Preferred Stock	0.0		0.0
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 income	55.8		55.5					55.5		0.3
Other comprehensive (loss) income	55.9							55.5
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	852.8				919.3
Ending balance (in shares) at Jun. 30, 2023	66.5								66.5
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)
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) income	(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	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