CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (159.4)	$ (20.3)	$ (97.5)	$ 210.4
Other comprehensive income (loss):
Foreign currency translation adjustment	87.1	57.4	(9.2)	38.6
Net unrealized derivative gains on cash flow hedges, net of taxes of $(1.8) and $1.0, and $(10.5) and $0.3 during the three and nine months ended, respectively	3.0	(21.9)	44.9	(14.6)
Pension and other post-employment benefits (losses) adjustment, net of tax of nil and nil, and $(5.8) and nil during the three and nine months ended, respectively	0.0	0.0	10.1	0.2
Total other comprehensive income, net of tax	90.1	35.5	45.8	24.2
Comprehensive (loss) income	(69.3)	15.2	(51.7)	234.6
Comprehensive income attributable to noncontrolling interests:
Net income	3.5	2.4	14.2	12.1
Foreign currency translation adjustment	0.3	1.2	(0.2)	0.9
Total comprehensive income attributable to noncontrolling interests	3.8	3.6	14.0	13.0
Comprehensive income attributable to redeemable noncontrolling interests:
Net income	1.3	4.1	5.7	10.4
Foreign currency translation adjustment	0.0	0.2	0.0	0.2
Total comprehensive income attributable to redeemable noncontrolling interests	1.3	4.3	5.7	10.6
Comprehensive (loss) income attributable to Coty Inc.	$ (74.4)	$ 7.3	$ (71.4)	$ 211.0