CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Net revenues	$ 1,124.1	$ 1,411.2
Cost of sales	464.9	561.9
Gross profit	659.2	849.3
Selling, general and administrative expenses	583.4	806.7
Amortization expense	65.4	58.3
Restructuring costs	30.1	4.8
Acquisition and divestiture-related costs	46.3	0.0
Gain on divestitures and sale of brand assets	0.0	(84.5)
Operating (loss) income	(66.0)	64.0
Interest expense, net	62.1	63.1
Other (income) expense, net	(5.8)	2.3
Loss from continuing operations before income taxes	(122.3)	(1.4)
Provision (benefit) for income taxes on continuing operations	(244.9)	(18.2)
Net income from continuing operations	122.6	16.8
Net income from discontinued operations	104.7	39.5
Net income	227.3	56.3
Net income attributable to noncontrolling interests	0.4	2.8
Net income attributable to redeemable noncontrolling interests	5.5	1.2
Net income attributable to Coty Inc.	221.4	52.3
Amounts attributable to Coty Inc.
Net income from continuing operations	116.7	12.8
Convertible Series B Preferred Stock dividends	(20.8)	0.0
Net income from continuing operations attributable to common stockholders	95.9	12.8
Net income from discontinued operations	104.7	39.5
Net income attributable to common stockholders	$ 200.6	$ 52.3
Earnings per common share
Earnings from continued operations per common share - basic (in dollars per share)	$ 0.13	$ 0.02
Earnings from continued operations per common share - diluted (in dollars per share)	0.13	0.02
Earnings from discontinued operations - basic (in dollars per share)	0.13	0.05
Earnings from discontinued operations - diluted (in dollars per share)	0.11	0.05
Earnings per common share - basic (in dollars per share)	0.26	0.07
Earnings per common share - diluted (in dollars per share)	$ 0.24	$ 0.07
Weighted-average common shares outstanding:
Basic (in shares)	763.9	754.2
Diluted (in shares)	916.7	758.9