CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss) from continuing operations	$ 12.7	$ (264.4)	$ (14.6)	$ (224.5)
Other comprehensive income (loss):
Foreign currency translation adjustment	(107.1)	(364.6)	22.0	(385.2)
Net unrealized derivative gain (loss) on cash flow hedges, net of taxes of $(2.4) and $11.0, and $(7.2) and $9.4 during the three and nine months ended, respectively	7.8	(35.0)	23.2	(29.9)
Pension and other post-employment benefits adjustment, net of tax of $0.2 and $0.0, and $4.5 and $0.0 during the three and nine months ended, respectively	(0.4)	(1.5)	(15.1)	(4.6)
Total other comprehensive (loss) income, net of tax	(99.7)	(401.1)	30.1	(419.7)
Comprehensive (loss) income	(87.0)	(665.5)	15.5	(644.2)
Comprehensive income attributable to noncontrolling interests:
Net (loss) income	(9.4)	6.2	(11.5)	9.5
Foreign currency translation adjustment	(0.2)	(0.1)	(0.1)	0.0
Total comprehensive (loss) income attributable to noncontrolling interests	(9.6)	6.1	(11.6)	9.5
Comprehensive income attributable to redeemable noncontrolling interests:
Net income	6.5	1.0	12.2	6.4
Comprehensive (loss) income attributable to Coty Inc.	$ (83.9)	$ (672.6)	$ 14.9	$ (660.1)