CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Net revenues	$ 2,296.7	$ 1,210.5	$ 3,376.9	$ 2,322.8
Cost of Sales	892.3	467.7	1,337.1	911.4
Gross profit	1,404.4	742.8	2,039.8	1,411.4
Selling, general and administrative expenses	1,170.2	515.4	1,649.1	999.7
Amortization expense	95.2	18.9	116.4	38.1
Restructuring costs	15.8	10.6	23.2	72.7
Acquisition-related costs	135.9	45.5	217.4	61.3
Asset impairment charges	0.0	0.0	0.0	5.5
Operating (loss) income	(12.7)	152.4	33.7	234.1
Interest expense, net	57.9	14.6	98.3	30.6
Loss on early extinguishment of debt	0.0	3.1	0.0	3.1
Other (income) expense, net	(0.6)	24.1	0.7	23.8
(Loss) income before income taxes	(70.0)	110.6	(65.3)	176.6
(Benefit) provision for income taxes	(122.1)	13.0	(127.2)	(54.1)
Net income	52.1	97.6	61.9	230.7
Net income attributable to noncontrolling interests	2.5	5.3	10.7	9.7
Net income attributable to redeemable noncontrolling interests	2.8	3.3	4.4	6.3
Net income attributable to Coty Inc.	$ 46.8	$ 89.0	$ 46.8	$ 214.7
Net income attributable to Coty Inc. per common share:
Basic (in dollars per share)	$ 0.06	$ 0.26	$ 0.09	$ 0.61
Diluted (in dollars per share)	$ 0.06	$ 0.25	$ 0.09	$ 0.59
Weighted-average common shares outstanding:
Basic (in shares)	746.6	345.0	539.8	352.5
Diluted (in shares)	752.4	354.3	545.8	362.0
Cash dividend declared per common share (in dollars per share)	$ 0.125	$ 0	$ 0.40	$ 0.25