CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Net revenues	$ 1,415.6	$ 1,683.7	$ 2,539.7	$ 3,094.9
Cost of sales	584.0	632.3	1,048.9	1,194.2
Gross profit	831.6	1,051.4	1,490.8	1,900.7
Selling, general and administrative expenses	641.5	916.4	1,224.9	1,723.1
Amortization expense	61.8	50.8	127.2	109.1
Restructuring costs	59.6	128.7	89.7	133.5
Acquisition and divestiture-related costs	51.7	36.0	98.0	36.0
Gain on divestitures and sale of brand assets	0.0	0.0	0.0	(84.5)
Operating income (loss)	17.0	(80.5)	(49.0)	(16.5)
Interest expense, net	59.2	58.4	121.3	121.5
Other expense, net	17.6	1.4	11.8	3.7
Loss from continuing operations before income taxes	(59.8)	(140.3)	(182.1)	(141.7)
Benefit for income taxes on continuing operations	(40.8)	(39.0)	(285.7)	(57.2)
Net (loss) income from continuing operations	(19.0)	(101.3)	103.6	(84.5)
Net (loss) income from discontinued operations	(235.6)	84.9	(130.9)	124.4
Net (loss) income	(254.6)	(16.4)	(27.3)	39.9
Net (loss) income attributable to noncontrolling interests	(2.5)	0.5	(2.1)	3.3
Net income attributable to redeemable noncontrolling interests	0.2	4.2	5.7	5.4
Net (loss) income attributable to Coty Inc.	(252.3)	(21.1)	(30.9)	31.2
Amounts attributable to Coty Inc.
Net (loss) income from continuing operations	(16.7)	(106.0)	100.0	(93.2)
Convertible Series B Preferred Stock dividends	(23.1)	0.0	(43.9)	0.0
Net (loss) income from continuing operations attributable to common stockholders	(39.8)	(106.0)	56.1	(93.2)
Net (loss) income from discontinued operations	(235.6)	84.9	(130.9)	124.4
Net (loss) income attributable to common stockholders	$ (275.4)	$ (21.1)	$ (74.8)	$ 31.2
(Loss) earnings per common share
(Loss) earnings from continued operations per common share - basic (in dollars per share)	$ (0.05)	$ (0.14)	$ 0.07	$ (0.12)
(Loss) earnings from continued operations per common share - diluted (in dollars per share)	(0.05)	(0.14)	0.07	(0.12)
(Loss) earnings from discontinued operations - basic (in dollars per share)	(0.31)	0.11	(0.17)	0.16
(Loss) earnings from discontinued operations - diluted (in dollars per share)	(0.31)	0.11	(0.17)	0.16
(Loss) earnings per common share - basic (in dollars per share)	(0.36)	(0.03)	(0.10)	0.04
(Loss) earnings per common share - diluted (in dollars per share)	$ (0.36)	$ (0.03)	$ (0.10)	$ 0.04
Weighted-average common shares outstanding:
Basic (in shares)	764.6	758.1	764.3	756.1
Diluted (in shares)	764.6	758.1	926.6	761.2