Document and Entity Information - USD ($)	12 Months Ended
	Jun. 30, 2016	Aug. 15, 2016	Dec. 31, 2015
Document Information [Line Items]
Entity Registrant Name	COTY INC.
Document Type	10-K
Current Fiscal Year End Date	--06-30
Amendment Flag	false
Entity Central Index Key	0001024305
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	Yes
Document Period End Date	Jun. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Entity Public Float			$ 1,709,238,004
Common Class A
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		74,014,981
Common Class B
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		262,062,370