CONDENSED CONSOLIDATED STATEMENTS OF EQUITY, REDEEMABLE COMMON STOCK AND REDEEMABLE NONCONTROLLING INTERESTS - USD ($) shares in Millions, $ in Millions	Total	Former Chief Executive Officer	Common Class A	Common Class A Former Chief Executive Officer	Series A Preferred Stock	Common Class B	Preferred Stock	Total Coty Inc. Stockholders’ Equity	Additional Paid-in Capital	Additional Paid-in Capital Former Chief Executive Officer	Additional Paid-in Capital Series A Preferred Stock	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Noncontrolling Interest	Total Equity	Redeemable Noncontrolling Interests
BALANCE at Jun. 30, 2014			$ 1.2			$ 2.6		$ 843.8	$ 1,926.9			$ (426.4)	$ (85.1)	$ (575.4)	$ 10.6	$ 854.4	$ 106.2
BALANCE (in Shares) at Jun. 30, 2014			125.1			263.7								(34.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Purchase of Class A Common Stock		$ (42.0)						(149.2)						$ (149.2)		(149.2)
Purchase of Class A Common Stock (in shares)		(2.4)												(7.6)
Reclassification of common stock and stock options to liability								(29.5)	(29.5)							(29.5)
Reclassification of CS from liability to APIC	$ 29.5
Exercise of employee stock options			$ 0.1	$ 0.0				22.4	22.3	$ 12.5						22.4
Exercise of employee stock options (in Shares)			2.8	1.4
Share-based compensation expense								8.1	8.1							8.1
Dividends								(71.8)	(71.8)							(71.8)
Net income	151.6							136.0				136.0			11.1	147.1	4.5
Other comprehensive income (loss)	(119.6)							(118.7)					(118.7)		(0.6)	(119.3)	(0.3)
Distribution to noncontrolling interests, net															1.8	1.8	(3.2)
Dividend payable to redeemable noncontrolling interest holder																	(5.9)
Redeemable noncontrolling interest purchase adjustment																	(16.2)
Adjustment of redeemable noncontrolling interests to redemption value								0.2	0.2							0.2	(0.2)
BALANCE at Dec. 31, 2014			$ 1.3			$ 2.6		641.3	1,898.2			(290.4)	(203.8)	$ (766.6)	22.9	664.2	84.9
BALANCE (in Shares) at Dec. 31, 2014			129.3			263.7								(44.9)
BALANCE at Jun. 30, 2015	$ 984.7		$ 1.3			$ 2.6	$ 0.0	969.8	2,044.4			(193.9)	(274.0)	$ (610.6)	14.9	984.7	86.3
BALANCE (in Shares) at Jun. 30, 2015			134.0			262.0	1.9							(35.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cancellation of Preferred Stock (shares)					(0.2)
Cancellation of Preferred Stock					$ 0.0
Cancellation of Preferred Stock					$ (0.1)						$ (0.1)
Purchase of Class A Common Stock			$ (700.0)					(727.9)						$ (727.9)		(727.9)
Purchase of Class A Common Stock (in shares)														(25.9)
Reclassification of CS from liability to APIC								13.8	13.8							13.8
Exercise of employee stock options			$ 0.1					20.1	20.0							20.1
Exercise of employee stock options (in Shares)	2.0		2.0
Share-based compensation expense								11.6	11.6		$ 0.5					11.6
Dividends								(89.6)	(89.6)							(89.6)
Net income	$ 230.7							214.7				214.7			9.7	224.4	6.3
Other comprehensive income (loss)	(11.3)							(11.0)					(11.0)		(0.3)	(11.3)	0.0
Distribution to noncontrolling interests, net															(10.7)	(10.7)	(6.6)
Adjustment of redeemable noncontrolling interests to redemption value								3.9	3.9							3.9	(3.9)
BALANCE at Dec. 31, 2015	$ 419.4		$ 1.4			$ 2.6	$ 0.0	$ 405.8	$ 2,004.5			$ 20.8	$ (285.0)	$ (1,338.5)	$ 13.6	$ 419.4	$ 82.1
BALANCE (in Shares) at Dec. 31, 2015			136.0			262.0	1.7							(61.1)