BUSINESS COMBINATIONS - Narrative (Details) shares in Millions, BRL in Millions, $ in Millions				5 Months Ended	12 Months Ended
	Feb. 01, 2016 USD ($)	Feb. 01, 2016 BRL	Apr. 01, 2015 USD ($) shares	Jun. 30, 2016 USD ($)	Jun. 30, 2016 USD ($) acquisition	Jun. 30, 2015 USD ($) acquisition	Jun. 30, 2014 USD ($)	Mar. 31, 2016 USD ($)	[1]
Business Acquisition [Line Items]
Number of businesses acquired during period | acquisition					1	1
Goodwill				$ 2,212.7	$ 2,212.7	$ 1,530.7
Acquisition-related costs					174.0	34.1	$ 0.7
Brazilian Acquisition
Business Acquisition [Line Items]
Percentage of shares acquired	100.00%
Purchase price	$ 901.9
Cash paid	901.9	BRL 3,599.5
Goodwill				553.7	553.7			$ 496.8
Net revenues from date of acquisition				95.5
Net loss from date of acquisition				$ (1.0)
Brazilian Acquisition | Acquisition-related costs
Business Acquisition [Line Items]
Acquisition-related costs					4.8
Brazilian Acquisition | Brazil Acquisition
Business Acquisition [Line Items]
Goodwill	241.3
Brazilian Acquisition | Fragrances
Business Acquisition [Line Items]
Goodwill	132.8
Brazilian Acquisition | Color Cosmetics
Business Acquisition [Line Items]
Goodwill	102.2
Brazilian Acquisition | Skin & Body Care
Business Acquisition [Line Items]
Goodwill	$ 77.4
Bourjois
Business Acquisition [Line Items]
Percentage of shares acquired			100.00%
Purchase price			$ 376.8
Goodwill			194.8
Net revenues from date of acquisition						46.1
Net loss from date of acquisition						(16.1)
Bourjois | Acquisition-related costs
Business Acquisition [Line Items]
Acquisition-related costs					$ 1.9	$ 3.9
Bourjois | Fragrances
Business Acquisition [Line Items]
Goodwill			35.0
Bourjois | Color Cosmetics
Business Acquisition [Line Items]
Goodwill			148.7
Bourjois | Skin & Body Care
Business Acquisition [Line Items]
Goodwill			$ 11.1
Bourjois | Common Class A
Business Acquisition [Line Items]
Number of shares issued | shares			15.5
Bourjois | Common Class A | Common Stock
Business Acquisition [Line Items]
Number of shares issued | shares			15.5
Fair Value of Coty Inc. Class A Stock			$ 376.8
Fair value of shares of Class A Common Stock			$ 376.8

[1] As previously reported in the Company’s Form 10-Q for the quarter ended March 31, 2016.