CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 90.7	$ 10.2
Other comprehensive income (loss):
Foreign currency translation adjustment	120.6	(114.5)
Net unrealized derivative gain (loss) on cash flow hedges, net of taxes of $0.4 and $(0.7), during the three months ended, respectively	(0.8)	1.5
Pension and other post-employment benefits adjustment, net of tax of $(0.4) and $0.9, during the three months ended, respectively	0.9	(2.1)
Total other comprehensive income (loss), net of tax	120.7	(115.1)
Comprehensive income (loss)	211.4	(104.9)
Comprehensive income attributable to noncontrolling interests:
Net income	2.1	1.1
Total comprehensive income attributable to noncontrolling interests	2.1	1.1
Comprehensive income attributable to redeemable noncontrolling interests:
Net income	5.7	7.5
Foreign currency translation adjustment	0.1	(0.1)
Total comprehensive income attributable to noncontrolling interests	5.8	7.4
Comprehensive income (loss) attributable to Coty Inc.	$ 203.5	$ (113.4)