NET INCOME ATTRIBUTABLE TO COTY INC. PER COMMON SHARE (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
		Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share [Abstract]
Net income attributable to Coty Inc.		$ 0.0	$ 125.7
Weighted-average common shares outstanding:
Weighted-average common shares outstanding—Basic (in shares)		336,300,000	360,000,000
Effect of dilutive stock options and Series A Preferred Stock (in shares)	[1]	0	6,700,000
Effect of restricted stock and RSUs (in shares)	[2]	0	3,200,000
Weighted-average common shares outstanding—Diluted (in shares)		336,300,000	369,900,000
Net income attributable to Coty Inc. per common share:
Basic (in dollars per share)		$ 0.00	$ 0.35
Diluted (in dollars per share)		$ 0.00	$ 0.34
Outstanding Stock Options and Series A Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from computation of diluted EPS			3,600,000
Restricted Stock Units (RSUs)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from computation of diluted EPS			0

[1] Due to a net income of nil for the three months ended September 30, 2016, outstanding stock options and Series A Preferred Stock with purchase or conversion rights to common stock were excluded from the computation of diluted EPS as their inclusion would be anti-dilutive. For the three months ended September 30, 2015, outstanding stock options and Series A Preferred Stock with purchase or conversion rights to purchase 3.6 million options were excluded in the computation of EPS as their inclusion would be anti-dilutive.

[2] Due to a net income of nil for the for the three months ended September 30, 2016, outstanding RSUs were excluded from the computation of diluted EPS as their inclusion would be anti-dilutive. For the three months ended September 30, 2015, no RSU were included in the computation of diluted loss per share as their inclusion would be anti-dilutive.