CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Net revenues	$ 2,345.0	$ 2,511.2	$ 4,287.8	$ 4,542.5
Cost of sales	859.3	956.7	1,597.7	1,765.8
Gross profit	1,485.7	1,554.5	2,690.1	2,776.7
Selling, general and administrative expenses	1,202.6	1,284.0	2,275.2	2,406.3
Gain on sale of business (See Note 5)	0.0	0.0	(84.5)	0.0
Amortization expense	76.8	88.5	161.1	181.0
Restructuring costs	134.9	21.5	140.9	37.0
Acquisition and divestiture-related costs	36.0	0.0	36.0	0.0
Asset impairment charges	0.0	965.1	0.0	977.7
Operating income (loss)	35.4	(804.6)	161.4	(825.3)
Interest expense, net	71.1	68.3	148.5	132.4
Other expense, net	1.3	4.8	3.5	7.5
(Loss) income before income taxes	(37.0)	(877.7)	9.4	(965.2)
(Benefit) provision for income taxes	(20.6)	78.3	(30.5)	0.9
Net (loss) income	(16.4)	(956.0)	39.9	(966.1)
Net income attributable to noncontrolling interests	0.5	0.6	3.3	1.8
Net income attributable to redeemable noncontrolling interests	4.2	4.0	5.4	4.8
Net (loss) income attributable to Coty Inc.	$ (21.1)	$ (960.6)	$ 31.2	$ (972.7)
Net (loss) income attributable to Coty Inc. per common share:
Basic (in dollars per share)	$ (0.03)	$ (1.28)	$ 0.04	$ (1.30)
Diluted (in dollars per share)	$ (0.03)	$ (1.28)	$ 0.04	$ (1.30)
Weighted-average common shares outstanding:
Basic (in shares)	758.1	751.1	756.1	751.0
Diluted (in shares)	758.1	751.1	761.2	751.0