CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Millions, $ in Millions	Total	Total Coty Inc. Stockholders’ Equity	Preferred Stock	Common Stock	Common Stock Class A Common Stock	Stock to be issued	Additional Paid-in Capital	Receivable from sale of stock	(Accumulated Deficit)	Accumulated Other Comprehensive (Loss) Income	Treasury Stock	Noncontrolling Interests
Beginning balance (in shares) at Jun. 30, 2022			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					905.5
Beginning balance (in shares) at Jun. 30, 2022											66.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of employee stock options and restricted stock units (in shares)					10.2
Reacquired Class A Common Stock for employee taxes (in shares)											0.1
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)
Adjustment of redeemable noncontrolling interests to redemption value	6.2	6.2					6.2
Ending balance (in shares) at Sep. 30, 2022			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					915.7
Ending balance (in shares) at Sep. 30, 2022											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
Beginning balance (in shares) at Jun. 30, 2023	1.0		1.0
Balance, beginning of period at Jun. 30, 2023	$ 3,997.4	3,811.1	$ 0.0		$ 9.1	$ 0.0	10,898.6	$ 0.0	(4,987.9)	(662.4)	$ (1,446.3)	186.3
Beginning balance (in shares) at Jun. 30, 2023	919.3				919.3
Beginning balance (in shares) at Jun. 30, 2023	66.5										66.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock in connection with global offering, net of offering costs (in shares)					30.0
Issuance of common stock in connection with global offering, net of offering costs	$ (5.5)			$ 0.3		31.5	311.2	(348.5)
Exercise of employee stock options and restricted stock units (in shares)				5.2
Exercise of employee stock options and restricted stock units				$ 0.1			(0.1)
Shares withheld for employee taxes	(0.8)	(0.8)					(0.8)
Share-based compensation expense	30.2	30.2					30.2
Equity Investment contribution for share-based compensation	0.7	0.7					0.7
Dividends Accrued - Convertible Series B Preferred Stock	(3.3)	(3.3)					(3.3)
Net income (loss)	2.7	1.6							1.6			1.1
Other comprehensive loss	(115.0)	(115.0)								(115.0)
Adjustment of redeemable noncontrolling interests to redemption value	$ 2.3	2.3					2.3
Ending balance (in shares) at Sep. 30, 2023	1.0		1.0
Ending balance at Sep. 30, 2023	$ 3,908.7	$ 3,721.3	$ 0.0		$ 9.5	$ 31.5	$ 11,238.8	$ (348.5)	$ (4,986.3)	$ (777.4)	$ (1,446.3)	$ 187.4
Ending balance (in shares) at Sep. 30, 2023	954.5				954.5
Ending balance (in shares) at Sep. 30, 2023	66.5										66.5
Balance, beginning of period at Jun. 30, 2023	$ 93.5
Balance, beginning of period at Jun. 30, 2023	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)	7.5
Other comprehensive loss	(0.1)
Adjustment of redeemable noncontrolling interests to redemption value	(2.3)
Balance, end of period at Sep. 30, 2023	98.6
Balance, end of period at Sep. 30, 2023	$ 142.4