CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Income Statement [Abstract]
Net revenues	$ 8,648.5	$ 9,398.0	$ 7,650.3
Cost of sales	3,306.5	3,607.8	3,028.3
Gross profit	5,342.0	5,790.2	4,622.0
Selling, general and administrative expenses	4,563.9	5,018.1	4,040.7
Amortization expense	353.5	352.8	275.1
Restructuring costs	44.2	173.2	374.8
Acquisition-related costs	0.0	64.2	355.4
Asset impairment charges	3,851.9	0.0	0.0
Loss (gain) on sale of brand assets	0.0	28.6	(3.1)
Operating (loss) income	(3,471.5)	153.3	(420.9)
Interest expense, net	275.7	265.0	218.6
Loss on early extinguishment of debt	0.0	10.7	0.0
Other expense, net	30.9	30.1	18.5
Loss before income taxes	(3,778.1)	(152.5)	(658.0)
Benefit for income taxes	(8.5)	(24.7)	(259.5)
Net loss	(3,769.6)	(127.8)	(398.5)
Net income attributable to noncontrolling interests	2.5	2.0	15.4
Net income attributable to redeemable noncontrolling interests	12.1	39.0	8.3
Net loss attributable to Coty Inc.	$ (3,784.2)	$ (168.8)	$ (422.2)
Net loss attributable to Coty Inc. per common share:
Basic (dollars per shares)	$ (5.04)	$ (0.23)	$ (0.66)
Diluted (dollars per shares)	$ (5.04)	$ (0.23)	$ (0.66)
Weighted-average common shares outstanding:
Basic (shares)	751.2	749.7	642.8
Diluted (shares)	751.2	749.7	642.8