CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (398.5)	$ 179.2	$ 259.4
Other comprehensive income (loss):
Foreign currency translation adjustment	121.9	83.3	(228.4)
Net unrealized derivative gain (loss) on cash flow hedges, net of taxes of $(7.7), $0.3 and $(1.6), respectively	41.5	(28.8)	8.8
Pension and other post-employment benefits, net of tax of $(25.1), $7.9 and $(17.6), respectively	80.6	(19.7)	30.1
Total other comprehensive income (loss), net of tax	244.0	34.8	(189.5)
Comprehensive (loss) income:	(154.5)	214.0	69.9
Comprehensive income attributable to noncontrolling interests:
Net income	15.4	7.6	15.1
Foreign currency translation adjustment	(0.1)	0.1	(0.4)
Total comprehensive income attributable to noncontrolling interests	15.3	7.7	14.7
Comprehensive income attributable to redeemable noncontrolling interests:
Net income	8.3	14.7	11.8
Foreign currency translation adjustment	0.0	0.4	(0.2)
Total comprehensive income attributable to redeemable noncontrolling interests	8.3	15.1	11.6
Comprehensive (loss) income attributable to Coty Inc.	$ (178.1)	$ 191.2	$ 43.6