Document And Entity Information - shares	6 Months Ended
	Dec. 31, 2015	Feb. 02, 2016
Document Information [Line Items]
Entity Registrant Name	COTY INC.
Document Type	10-Q
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	No
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q2
Common Class A
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		75,098,054
Common Class B
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		262,062,370