CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Millions, $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect, Period of Adoption, Adjusted Balance	Total Coty Inc. Stockholders’ Equity	Total Coty Inc. Stockholders’ Equity Cumulative Effect, Period of Adoption, Adjustment	Total Coty Inc. Stockholders’ Equity Cumulative Effect, Period of Adoption, Adjusted Balance	Preferred Stock	Preferred Stock Cumulative Effect, Period of Adoption, Adjusted Balance	Common Stock Class A Common Stock	Common Stock Class A Common Stock Cumulative Effect, Period of Adoption, Adjusted Balance	Additional Paid-in Capital	Additional Paid-in Capital Cumulative Effect, Period of Adoption, Adjusted Balance	(Accumulated Deficit)	(Accumulated Deficit) Cumulative Effect, Period of Adoption, Adjustment	(Accumulated Deficit) Cumulative Effect, Period of Adoption, Adjusted Balance	Accumulated Other Comprehensive (Loss) Income	Accumulated Other Comprehensive (Loss) Income Cumulative Effect, Period of Adoption, Adjusted Balance	Treasury Stock	Treasury Stock Cumulative Effect, Period of Adoption, Adjusted Balance	Noncontrolling Interests	Noncontrolling Interests Cumulative Effect, Period of Adoption, Adjusted Balance
Balance, beginning of period (in shares) at Jun. 30, 2020							1.5	1.5	830.6	830.6								65.5	65.5
Balance, beginning of period at Jun. 30, 2020	$ 3,228.8	$ (5.7)	$ 3,223.1	$ 3,004.6	$ (5.7)	$ 2,998.9	$ 0.0	$ 0.0	$ 8.3	$ 8.3	$ 10,447.4	$ 10,447.4	$ (5,548.6)	$ (5.7)	$ (5,554.3)	$ (456.2)	$ (456.2)	$ (1,446.3)	$ (1,446.3)	$ 224.2	$ 224.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of employee stock options and restricted stock unit (in shares)									0.6
Shares withheld for employee taxes	(1.0)			(1.0)							(1.0)
Share-based compensation expense	6.2			6.2							6.2
Changes in dividends accrued	0.8			0.8							0.8
Dividends accrued- Convertible Series B Preferred Stock	(20.8)			(20.8)							(20.8)
Net income (loss)	221.8			221.4									221.4							0.4
Other comprehensive loss	(6.0)			(5.9)												(5.9)				(0.1)
Adjustment of redeemable noncontrolling interests to redemption value	1.5			1.5							1.5
Balance, end of period (in shares) at Sep. 30, 2020							1.5		831.2									65.5
Balance, end of period at Sep. 30, 2020	3,425.6			3,201.1			$ 0.0		$ 8.3		10,434.1		(5,332.9)			(462.1)		$ (1,446.3)		224.5
Balance, beginning of period at Jun. 30, 2020	79.1		79.1
Balance, beginning of period at Jun. 30, 2020	715.8		715.8
Redeemable Noncontrolling Interests
Issuance of Preferred Stock	242.4
Dividends accrued- Convertible Series B Preferred Stock	20.8
Net income (loss)	5.5
Adjustment of redeemable noncontrolling interests to redemption value	(1.5)
Balance, end of period at Sep. 30, 2020	83.1
Balance, end of period at Sep. 30, 2020	979.0
Balance, beginning of period (in shares) at Jun. 30, 2020							1.5	1.5	830.6	830.6								65.5	65.5
Balance, beginning of period at Jun. 30, 2020	3,228.8	$ (5.7)	3,223.1	3,004.6	$ (5.7)	$ 2,998.9	$ 0.0	$ 0.0	$ 8.3	$ 8.3	10,447.4	$ 10,447.4	(5,548.6)	$ (5.7)	$ (5,554.3)	(456.2)	$ (456.2)	$ (1,446.3)	$ (1,446.3)	224.2	$ 224.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive loss	30.1
Balance, end of period (in shares) at Mar. 31, 2021							1.5		832.3									66.2
Balance, end of period at Mar. 31, 2021	3,170.5			2,962.2			$ 0.0		$ 8.3		10,395.8		(5,569.6)			(426.0)		$ (1,446.3)		208.3
Balance, beginning of period at Jun. 30, 2020	79.1		79.1
Balance, beginning of period at Jun. 30, 2020	715.8		$ 715.8
Balance, end of period at Mar. 31, 2021	87.4
Balance, end of period at Mar. 31, 2021	1,036.3
Balance, beginning of period (in shares) at Sep. 30, 2020							1.5		831.2									65.5
Balance, beginning of period at Sep. 30, 2020	3,425.6			3,201.1			$ 0.0		$ 8.3		10,434.1		(5,332.9)			(462.1)		$ (1,446.3)		224.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of employee stock options and restricted stock unit (in shares)									0.4
Shares withheld for employee taxes	(0.9)			(0.9)							(0.9)
Share-based compensation expense	14.4			14.4							14.4
Changes in dividends accrued	0.4			0.4							0.4
Dividends accrued- Convertible Series B Preferred Stock	(23.2)			(23.2)							(23.2)
Net income (loss)	(254.8)			(252.3)									(252.3)							(2.5)
Other comprehensive loss	135.8			135.6												135.6				0.2
Distribution to noncontrolling interests, net	(4.3)																			(4.3)
Adjustment of redeemable noncontrolling interests to redemption value	1.8			1.8							1.8
Equity Investment contribution for share-based compensation	0.5			0.5							0.5
Balance, end of period (in shares) at Dec. 31, 2020							1.5		831.6									65.5
Balance, end of period at Dec. 31, 2020	3,295.3			3,077.4			$ 0.0		$ 8.3		10,427.1		(5,585.2)			(326.5)		$ (1,446.3)		217.9
Balance, beginning of period at Sep. 30, 2020	83.1
Balance, beginning of period at Sep. 30, 2020	979.0
Redeemable Noncontrolling Interests
Dividends accrued- Convertible Series B Preferred Stock	23.2
Net income (loss)	0.3
Distribution to noncontrolling interests, net	(2.1)
Adjustment of redeemable noncontrolling interests to redemption value	(1.8)
Balance, end of period at Dec. 31, 2020	79.5
Balance, end of period at Dec. 31, 2020	1,002.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of employee stock options and restricted stock unit (in shares)									0.7
Shares withheld for employee taxes	(2.3)			(2.3)							(2.3)
Share-based compensation expense	6.0			6.0							6.0
Changes in dividends accrued	0.5			0.5							0.5
Dividends accrued- Convertible Series B Preferred Stock	(23.6)			(23.6)							(23.6)
Deemed Dividends - Conversion of Convertible Series B Preferred Stock	(10.5)			(10.5)							(10.5)
Cancellation of Restricted Stock (in shares)																		0.7
Net income (loss)	6.2			15.6									15.6							(9.4)
Other comprehensive loss	(99.7)			(99.5)												(99.5)				(0.2)
Adjustment of redeemable noncontrolling interests to redemption value	(1.4)			(1.4)							(1.4)
Balance, end of period (in shares) at Mar. 31, 2021							1.5		832.3									66.2
Balance, end of period at Mar. 31, 2021	3,170.5			2,962.2			$ 0.0		$ 8.3		10,395.8		(5,569.6)			(426.0)		$ (1,446.3)		208.3
Redeemable Noncontrolling Interests
Dividends accrued- Convertible Series B Preferred Stock	23.6
Deemed Dividends - Conversion of Convertible Series B Preferred Stock	10.5
Net income (loss)	6.5
Adjustment of redeemable noncontrolling interests to redemption value	1.4
Balance, end of period at Mar. 31, 2021	87.4
Balance, end of period at Mar. 31, 2021	1,036.3
Balance, beginning of period (in shares) at Jun. 30, 2021							1.5		832.3									66.3
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
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
Balance, end of period (in shares) at Sep. 30, 2021							1.5		883.3									66.3
Balance, end of period 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
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)			(307.9)					$ (0.5)		(307.4)
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
Balance, beginning of period (in shares) at Jun. 30, 2021							1.5		832.3									66.3
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Changes in dividends accrued	0.8
Other comprehensive loss	(198.8)
Balance, end of period (in shares) at Mar. 31, 2022							1.5		905.5									66.3
Balance, end of period at Mar. 31, 2022	3,792.9			3,598.7			$ 0.0		$ 9.0		10,770.9		(5,214.6)			(520.3)		$ (1,446.3)		194.2
Balance, beginning of period at Jun. 30, 2021	84.1
Balance, beginning of period at Jun. 30, 2021	1,036.3
Balance, end of period at Mar. 31, 2022	71.9
Balance, end of period at Mar. 31, 2022	142.4
Balance, beginning of period (in shares) at Sep. 30, 2021							1.5		883.3									66.3
Balance, beginning of period 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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of employee stock options and restricted stock unit (in shares)									(48.2)
Shares withheld for employee taxes	(7.1)			(7.1)							(7.1)
Share-based compensation expense	26.9			26.9							26.9
Equity Investment contribution for share-based compensation	(3.0)			(3.0)							(3.0)
Changes in dividends accrued	0.2			0.2							0.2
Conversion of Convertible Series B Preferred Stock (in shares)									69.9
Conversion of Convertible Series B Preferred Stock	121.6			121.6					$ 0.2		121.4
Dividends accrued- Convertible Series B Preferred Stock	(5.9)			(5.9)							(5.9)
Deemed Dividends - Conversion of Convertible Series B Preferred Stock	(0.8)			(0.8)							(0.8)
Deemed Dividends - Redemption of Convertible Series B Preferred Stock	(66.4)			(66.4)							(66.4)
Deemed Contributions - Convertible Series B Preferred Stock	4.4			4.4							4.4
Net income (loss)	260.5			261.4									261.4							(0.9)
Other comprehensive loss	(100.4)			(100.3)												(100.3)				(0.1)
Distribution to noncontrolling interests, net	(2.7)																			(2.7)
Adjustment of redeemable noncontrolling interests to redemption value	(2.9)			(2.9)							(2.9)
Balance, end of period (in shares) at Dec. 31, 2021							1.5		905.0									66.3
Balance, end of period at Dec. 31, 2021	3,668.6			3,471.5			$ 0.0		$ 9.0		10,737.2		(5,268.2)			(560.2)		$ (1,446.3)		197.1
Balance, beginning of period at Sep. 30, 2021	83.4
Balance, beginning of period at Sep. 30, 2021	453.7
Redeemable Noncontrolling Interests
Conversion of Convertible Series B Preferred Stock	(121.6)			(121.6)					$ (0.2)		(121.4)
Exchange Transaction	(212.7)
Dividends accrued- Convertible Series B Preferred Stock	5.9
Deemed Dividends - Conversion of Convertible Series B Preferred Stock	0.8
Deemed Dividends - Redemption of Convertible Series B Preferred Stock	66.4
Deemed Contributions - Convertible Series B Preferred Stock	(4.4)
Dividends Paid - Convertible Series B Preferred Stock	(45.7)
Net income (loss)	3.2
Distribution to noncontrolling interests, net	(5.8)
Adjustment of redeemable noncontrolling interests to redemption value	2.9
Balance, end of period at Dec. 31, 2021	83.7
Balance, end of period at Dec. 31, 2021	142.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of employee stock options and restricted stock unit (in shares)									0.5
Shares withheld for employee taxes	(0.7)			(0.7)							(0.7)
Share-based compensation expense	29.1			29.1							29.1
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)	52.7			53.6									53.6							(0.9)
Other comprehensive loss	39.8			39.9												39.9				(0.1)
Distribution to noncontrolling interests, net	(1.9)																			(1.9)
Adjustment of redeemable noncontrolling interests to redemption value	7.5			7.5							7.5
Balance, end of period (in shares) at Mar. 31, 2022							1.5		905.5									66.3
Balance, end of period at Mar. 31, 2022	3,792.9			$ 3,598.7			$ 0.0		$ 9.0		$ 10,770.9		$ (5,214.6)			$ (520.3)		$ (1,446.3)		$ 194.2
Redeemable Noncontrolling Interests
Dividends accrued- Convertible Series B Preferred Stock	3.3
Dividends Paid - Convertible Series B Preferred Stock	(3.3)
Net income (loss)	2.3
Distribution to noncontrolling interests, net	(6.6)
Adjustment of redeemable noncontrolling interests to redemption value	(7.5)
Balance, end of period at Mar. 31, 2022	71.9
Balance, end of period at Mar. 31, 2022	$ 142.4