CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 263.7	$ (254.6)	$ 492.6	$ (27.3)
Other comprehensive income (loss):
Foreign currency translation adjustment	(107.7)	139.6	(250.8)	129.1
Net unrealized derivative gain (loss) on cash flow hedges, net of taxes of $(1.8) and $(2.9), and $(3.4) and $(4.8) during the three and six months ended, respectively	5.5	9.7	9.9	15.4
Pension and other post-employment benefits adjustment, net of tax of $0.0 and $4.3, and $0.0 and $4.3 during the three and six months ended, respectively	1.8	(13.5)	2.3	(14.7)
Total other comprehensive (loss) income, net of tax	(100.4)	135.8	(238.6)	129.8
Comprehensive income (loss)	163.3	(118.8)	254.0	102.5
Comprehensive income attributable to noncontrolling interests:
Net loss	(0.9)	(2.5)	(1.4)	(2.1)
Foreign currency translation adjustment	(0.1)	0.2	(0.3)	0.1
Total comprehensive loss attributable to noncontrolling interests	(1.0)	(2.3)	(1.7)	(2.0)
Comprehensive income attributable to redeemable noncontrolling interests:
Net income	3.2	0.2	6.6	5.7
Comprehensive income (loss) attributable to Coty Inc.	$ 161.1	$ (116.7)	$ 249.1	$ 98.8