CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Income Statement [Abstract]
Net revenues	$ 1,678.6	$ 1,669.9	$ 3,255.8	$ 3,341.4
Cost of sales	608.0	555.7	1,168.4	1,132.6
Gross profit	1,070.6	1,114.2	2,087.4	2,208.8
Selling, general and administrative expenses	842.5	797.3	1,636.0	1,605.3
Amortization expense	74.1	47.3	113.4	95.4
Restructuring costs	5.8	1.4	4.8	2.1
Operating income	148.2	268.2	333.2	506.0
Interest expense, net	41.4	54.4	88.0	116.2
Other expense, net	275.4	157.2	306.7	200.5
(Loss) Income before income taxes	(168.6)	56.6	(61.5)	189.3
(Benefit) provision for income taxes	(52.4)	26.0	(19.3)	68.0
Net (loss) income	(116.2)	30.6	(42.2)	121.3
Net income attributable to noncontrolling interests	2.5	1.6	4.6	3.7
Net income attributable to redeemable noncontrolling interests	4.9	5.3	8.9	11.0
Net (loss) income attributable to Coty Inc.	(123.6)	23.7	(55.7)	106.6
Amounts attributable to Coty Inc.
Net (loss) income attributable to Coty Inc.	(123.6)	23.7	(55.7)	106.6
Convertible Series B Preferred Stock dividends	(3.3)	(3.3)	(6.6)	(6.6)
Net (loss) income attributable to common stockholders	(126.9)	20.4	(62.3)	100.0
Net (loss) income attributable to common stockholders	$ (126.9)	$ 20.4	$ (62.3)	$ 100.0
Earnings per common share:
Earnings per common share - basic (in dollars per share)	$ (0.14)	$ 0.02	$ (0.07)	$ 0.11
Earnings per common share - diluted (in dollars per share)	$ (0.14)	$ 0.02	$ (0.07)	$ 0.11
Weighted-average common shares outstanding:
Basic (in shares)	876.8	871.4	874.8	869.6
Diluted (in shares)	876.8	875.2	874.8	875.2