COMMITMENTS AND CONTINGENCIES - Narrative (Details) $ / shares in Units, shares in Millions, $ in Millions		12 Months Ended
	Aug. 17, 2016 USD ($) brand $ / shares shares	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jul. 09, 2015 USD ($) brand $ / shares
Loss Contingencies [Line Items]
Acquisition-related costs		$ 174.0	$ 34.1	$ 0.7
P&G Beauty Brands
Loss Contingencies [Line Items]
Number of beauty brands | brand					43
Debt assumed					$ 2,900.0
Amount of adjustment					1,000.0
Acquisition-related costs		163.8	$ 30.2
Merger related costs		$ 400.0
P&G Beauty Brands | Subsequent Event
Loss Contingencies [Line Items]
Debt assumed	$ 1,800.0
Number of shares issued | shares	409.7
P&Gs percent ownership	54.00%
Number of brands | brand	2
Estimated value of transaction	$ 13,200.0
Closing price per share | $ / shares	$ 27.71
Value of combined company	$ 11,400.0
Collar amount debt based on closing price of Coty common stock	1,900.0
Decrease in connection with certain other adjustments	$ 100.0
P&G Beauty Brands | Minimum
Loss Contingencies [Line Items]
Debt assumed					$ 1,900.0
Assumed debt per share of Coty's stock (in dollars per share) | $ / shares					$ 22.06
P&G Beauty Brands | Maximum
Loss Contingencies [Line Items]
Debt assumed					$ 3,900.0
Assumed debt per share of Coty's stock (in dollars per share) | $ / shares					$ 27.06