BUSINESS COMBINATIONS - Summary of Consideration (Details) £ in Millions, $ in Millions	Apr. 01, 2015 USD ($)	Jan. 02, 2014 USD ($)	Jan. 02, 2014 GBP (£)	Jul. 02, 2013 USD ($)
Bourjois
Business Acquisition [Line Items]
Purchase price	$ 376.8
Purchase price	376.8
Bourjois | Common Stock | Common Class A
Business Acquisition [Line Items]
Fair Value of Coty Inc. Class A Stock	$ 376.8
Lena White Limited
Business Acquisition [Line Items]
Cash paid		$ 8.3
Cash received from seller for net working capital adjustment		0.3
Noncash consideration for pre-acquisition trade receivables		1.9
Contingent consideration payable		1.1	£ 0.7
Purchase price		$ 11.6	£ 7.0
StarAsia
Business Acquisition [Line Items]
Cash paid				$ 25.0
Cash received from seller for net working capital adjustment				(3.5)
Noncash consideration for pre-acquisition trade receivables				2.0
Purchase price				$ 23.5