CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (10.1)	$ (16.1)
Other comprehensive (loss) income:
Foreign currency translation adjustment	(48.9)	239.1
Net unrealized derivative gain (loss) on cash flow hedges, net of taxes of $(0.3) and $(0.1) during the three months ended, respectively	1.0	(0.1)
Pension and other post-employment benefits adjustment, net of tax of $0.5 and nil during the three months ended, respectively	0.1	0.7
Total other comprehensive (loss) income, net of tax	(47.8)	239.7
Comprehensive (loss) income	(57.9)	223.6
Comprehensive income (loss) attributable to noncontrolling interests:
Net income (loss)	1.2	(2.2)
Foreign currency translation adjustment	0.2	0.6
Total comprehensive income (loss) attributable to noncontrolling interests	1.4	(1.6)
Comprehensive income attributable to redeemable noncontrolling interests:
Net income	0.8	5.8
Foreign currency translation adjustment	0.0	0.0
Total comprehensive income attributable to redeemable noncontrolling interests	0.8	5.8
Comprehensive (loss) income attributable to Coty Inc.	$ (60.1)	$ 219.4