CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Millions, $ in Millions	Total	Class A Common Stock	Total Coty Inc. Stockholders’ Equity	Preferred Stock	Common Stock Class A Common Stock	Additional Paid-in Capital	(Accumulated Deficit)	Accumulated Other Comprehensive (Loss) Income	Treasury Stock	Noncontrolling Interests
Beginning balance (in shares) at Jun. 30, 2021				1.5
Balance, beginning of period 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 unit (in shares)					51.0
Shares withheld for employee taxes	(4.2)		(4.2)			(4.2)
Share-based compensation expense	107.8		107.8			107.8
Equity Investment contribution for share-based compensation	1.6		1.6			1.6
Changes in dividends accrued	0.5		0.5			0.5
Conversion of Convertible Series B Preferred Stock	307.9		307.9		$ 0.5	307.4
Dividends Accrued - Convertible Series B Preferred Stock	(22.7)		(22.7)			(22.7)
Deemed Dividends - Conversion of Convertible Series B Preferred Stock	(6.7)		(6.7)			(6.7)
Deemed Dividends - Exchange Agreement	(93.6)		(93.6)			(93.6)
Net income (loss)	225.5		226.0				226.0			(0.5)
Other comprehensive loss	(138.2)		(138.0)					(138.0)		(0.2)
Adjustment of redeemable noncontrolling interests to redemption value	4.1		4.1			4.1
Ending balance (in shares) at Sep. 30, 2021				1.5
Ending balance at Sep. 30, 2021	3,444.2		3,243.4	$ 0.0	$ 8.8	10,670.4	(5,529.6)	(459.9)	$ (1,446.3)	200.8
Ending balance (in shares) at Sep. 30, 2021					883.3
Ending balance (in shares) at Sep. 30, 2021									66.3
Balance, beginning of period at Jun. 30, 2021	84.1
Balance, beginning of period at Jun. 30, 2021	1,036.3
Redeemable Noncontrolling Interests
Conversion of Convertible Series B Preferred Stock	(307.9)
Reclassification to Mandatorily redeemable Convertible Series B Preferred Stock	(394.2)
Dividends Accrued - Convertible Series B Preferred Stock	22.7
Deemed Dividends - Conversion of Convertible Series B Preferred Stock	6.7
Deemed Dividends - Exchange Agreement	93.6
Dividends Paid - Convertible Series B Preferred Stock	(3.5)
Net income (loss)	3.4
Adjustment of redeemable noncontrolling interests to redemption value	(4.1)
Balance, end of period at Sep. 30, 2021	83.4
Balance, end of period at Sep. 30, 2021	$ 453.7
Beginning balance (in shares) at Jun. 30, 2022	1.5			1.5
Balance, beginning of period 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	839.2				905.5
Beginning balance (in shares) at Jun. 30, 2022	66.3								66.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reacquired Class A Common Stock for employee taxes (in shares)									0.1
Exercise of employee stock options and restricted stock unit (in shares)					10.2
Shares withheld for employee taxes	$ (1.1)		(1.1)			(1.1)
Share-based compensation expense	31.4		31.4			31.4
Equity Investment contribution for share-based compensation	1.7		1.7			1.7
Dividends Accrued - Convertible Series B Preferred Stock	(3.3)		(3.3)			(3.3)
Net income (loss)	128.6		128.6				128.6
Other comprehensive loss	(266.2)		(266.2)					(266.2)
Other comprehensive loss	(266.4)
Adjustment of redeemable noncontrolling interests to redemption value	$ 6.2		6.2			6.2
Ending balance (in shares) at Sep. 30, 2022	1.5			1.5
Ending balance at Sep. 30, 2022	$ 3,243.1		$ 3,051.8	$ 0.0	$ 9.0	$ 10,840.7	$ (5,367.5)	$ (984.1)	$ (1,446.3)	$ 191.3
Ending balance (in shares) at Sep. 30, 2022	849.3	849.3			915.7
Ending balance (in shares) at Sep. 30, 2022	66.4								66.4
Balance, beginning of period at Jun. 30, 2022	$ 69.8
Balance, beginning of period at Jun. 30, 2022	142.4
Redeemable Noncontrolling Interests
Dividends Accrued - Convertible Series B Preferred Stock	3.3
Dividends Paid - Convertible Series B Preferred Stock	(3.3)
Net income (loss)	5.9
Other comprehensive loss	(0.2)
Adjustment of redeemable noncontrolling interests to redemption value	(6.2)
Balance, end of period at Sep. 30, 2022	69.3
Balance, end of period at Sep. 30, 2022	$ 142.4