CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 523.2	$ 267.7	$ (205.1)
Other comprehensive income (loss):
Foreign currency translation adjustment	49.4	(476.1)	130.3
Net unrealized derivative (loss) gain on cash flow hedges, net of taxes of $1.4, $(6.0) and $(8.4), respectively	(3.6)	19.8	27.5
Pension and other post-employment benefits, net of taxes of $(4.9), $(24.7) and $9.0, respectively	10.1	59.4	(23.6)
Total other comprehensive income (loss), net of tax	55.9	(396.9)	134.2
Comprehensive income (loss)	579.1	(129.2)	(70.9)
Comprehensive (loss) attributable to noncontrolling interests:
Net loss	(1.8)	(5.1)	(16.1)
Foreign currency translation adjustment	0.3	(0.5)	(0.1)
Total comprehensive loss attributable to noncontrolling interests	(1.5)	(5.6)	(16.2)
Comprehensive income (loss) attributable to redeemable noncontrolling interests:
Net income	16.8	13.3	12.3
Foreign currency translation adjustment	0.1	(0.4)	0.0
Total comprehensive income attributable to redeemable noncontrolling interests	16.9	12.9	12.3
Comprehensive income (loss) attributable to Coty Inc.	$ 563.7	$ (136.5)	$ (67.0)