NET INCOME (LOSS) ATTRIBUTABLE TO COTY INC. PER COMMON SHARE (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended	12 Months Ended
		Mar. 31, 2013	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]
Net income attributable to Coty Inc.			$ 232.5	$ (97.4)	$ 168.0
Weighted-average common shares outstanding:
Weighted-average common shares outstanding—Basic			353,300,000	381,700,000	381,700,000
Effect of dilutive stock options and Series A Preferred Stock	[1]		7,600,000	0	12,300,000
Effect of restricted stock and RSUs	[2]		2,000,000	0	2,400,000
Weighted-average common shares outstanding—Diluted			362,900,000	381,700,000	396,400,000
Net income (loss) attributable to Coty Inc. per common share:
Basic (dollars per shares)			$ 0.66	$ (0.26)	$ 0.44
Diluted (dollars per shares)			$ 0.64	$ (0.26)	$ 0.42
Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Outstanding options excluded from diluted earnings per share calculation due to anti-dilutive effect			700,000	0	1,200,000
Restricted Stock Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Outstanding options excluded from diluted earnings per share calculation due to anti-dilutive effect		400,000		0	0

[1] As of June 30, 2015 and 2013, outstanding stock options and Series A Preferred Stock to purchase 0.7 million and 1.2 million shares of Common Stock, respectively, are excluded from the computation of diluted EPS as their inclusion would be anti-dilutive. Due to the net loss incurred in fiscal 2014, stock options are excluded from the computation of diluted EPS as their inclusion would be anti-dilutive.

[2] As of June 30, 2015 and 2013, there are 0.4 million and zero anti-dilutive RSUs excluded from the computation of diluted EPS as their inclusion would be anti-dilutive. Due to the net loss incurred in fiscal 2014, RSUs are excluded from the computation of diluted EPS as their inclusion would be anti-dilutive.