CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Millions, $ in Millions	Total	Total Coty Inc. Stockholders’ Equity	Preferred 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]
Reacquired Class A Common Stock for employee taxes (in shares)										0.1
Exercise of employee stock options and restricted stock units (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 income (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 (income)	(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, 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
Ending balance (in shares) at Dec. 31, 2022			1.5
Ending balance at Dec. 31, 2022	3,721.6	3,531.4	$ 0.0	$ 9.1		10,865.9		(5,129.2)	(768.1)	$ (1,446.3)	190.2
Ending balance (in shares) at Dec. 31, 2022				918.9
Ending balance (in shares) at Dec. 31, 2022										66.4
Balance, beginning of period at Jun. 30, 2022	69.8
Balance, beginning of period at Jun. 30, 2022	142.4
Balance, end of period at Dec. 31, 2022	69.7
Balance, end of period at Dec. 31, 2022	142.4
Beginning balance (in shares) at Sep. 30, 2022			1.5
Balance, beginning of period 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
Beginning balance (in shares) at Sep. 30, 2022				915.7
Beginning balance (in shares) at Sep. 30, 2022										66.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of employee stock options and restricted stock units (in shares)				3.2
Reacquired Class A Common Stock for employee taxes				$ 0.1		(0.1)
Shares withheld for employee taxes	(10.5)	(10.5)				(10.5)
Share-based compensation expense	33.6	33.6				33.6
Equity Investment contribution for share-based compensation	1.0	1.0				1.0
Changes in dividends accrued	0.1	0.1				0.1
Dividends Accrued - Convertible Series B Preferred Stock	(3.3)	(3.3)				(3.3)
Net income (loss)	236.9	238.3						238.3			(1.4)
Other comprehensive income (loss)	216.3	216.0							216.0		0.3
Adjustment of redeemable noncontrolling interests to redemption value	4.4	4.4				4.4
Ending balance (in shares) at Dec. 31, 2022			1.5
Ending balance at Dec. 31, 2022	3,721.6	3,531.4	$ 0.0	$ 9.1		10,865.9		(5,129.2)	(768.1)	$ (1,446.3)	190.2
Ending balance (in shares) at Dec. 31, 2022				918.9
Ending balance (in shares) at Dec. 31, 2022										66.4
Balance, beginning of period at Sep. 30, 2022	69.3
Balance, beginning of period at Sep. 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)	4.5
Other comprehensive loss (income)	0.3
Adjustment of redeemable noncontrolling interests to redemption value	(4.4)
Balance, end of period at Dec. 31, 2022	69.7
Balance, end of period at Dec. 31, 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 Class A Common Stock in connection with global offering, net of offering costs	$ (5.5)	(5.5)		$ 0.3	31.5	311.2	(348.5)
Exercise of employee stock options and restricted stock units (in shares)				5.2
Reacquired Class A Common Stock for employee taxes				$ 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 income (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
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
Ending balance (in shares) at Sep. 30, 2023										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 (income)	(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
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
Ending balance (in shares) at Dec. 31, 2023	1.0		1.0
Ending balance at Dec. 31, 2023	$ 4,612.7	4,424.8	$ 0.0	$ 9.6	0.0	11,273.5	0.0	(4,805.4)	(606.6)	$ (1,446.3)	187.9
Ending balance (in shares) at Dec. 31, 2023	961.7			961.7
Ending balance (in shares) at Dec. 31, 2023	66.6									66.6
Balance, beginning of period at Jun. 30, 2023	$ 93.5
Balance, beginning of period at Jun. 30, 2023	142.4
Balance, end of period at Dec. 31, 2023	102.2
Balance, end of period at Dec. 31, 2023	142.4
Beginning balance (in shares) at Sep. 30, 2023			1.0
Balance, beginning of period 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
Beginning balance (in shares) at Sep. 30, 2023				954.5
Beginning balance (in shares) at Sep. 30, 2023										66.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock in connection with global offering, net of offering costs (in shares)				3.0
Issuance of Class A Common Stock in connection with global offering, net of offering costs	347.9	347.9			(31.5)	30.9	348.5
Reacquired Class A Common Stock for employee taxes (in shares)										0.1
Exercise of employee stock options and restricted stock units (in shares)				4.2
Reacquired Class A Common Stock for employee taxes	11.3	11.3		$ 0.1		11.2
Shares withheld for employee taxes	(17.3)	(17.3)				(17.3)
Share-based compensation expense	19.9	19.9				19.9
Equity Investment contribution for share-based compensation	0.6	0.6				0.6
Dividends Accrued - Convertible Series B Preferred Stock	(3.3)	(3.3)				(3.3)
Net income (loss)	181.4	180.9						180.9			0.5
Other comprehensive income (loss)	170.8	170.8							170.8
Adjustment of redeemable noncontrolling interests to redemption value	$ (7.3)	(7.3)				(7.3)
Ending balance (in shares) at Dec. 31, 2023	1.0		1.0
Ending balance at Dec. 31, 2023	$ 4,612.7	$ 4,424.8	$ 0.0	$ 9.6	$ 0.0	$ 11,273.5	$ 0.0	$ (4,805.4)	$ (606.6)	$ (1,446.3)	$ 187.9
Ending balance (in shares) at Dec. 31, 2023	961.7			961.7
Ending balance (in shares) at Dec. 31, 2023	66.6									66.6
Balance, beginning of period at Sep. 30, 2023	$ 98.6
Balance, beginning of period at Sep. 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)	4.6
Other comprehensive loss (income)	0.2
Distribution to noncontrolling interests, net	(8.5)
Adjustment of redeemable noncontrolling interests to redemption value	7.3
Balance, end of period at Dec. 31, 2023	102.2
Balance, end of period at Dec. 31, 2023	$ 142.4