Cover Page - USD ($) $ in Billions	12 Months Ended
	Jun. 30, 2020	Aug. 20, 2020	Dec. 31, 2019
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Jun. 30, 2020
Document Transition Report	false
Entity File Number	001-35964
Entity Registrant Name	COTY INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	13-3823358
Entity Address, Address Line One	350 Fifth Avenue,
Entity Address, City or Town	New York,
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10118
City Area Code	212
Local Phone Number	389-7300
Title of 12(b) Security	Class A Common Stock, $0.01 par value
Trading Symbol	COTY
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
ICFR Auditor Attestation Flag	true
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 3.2
Entity Common Stock, Shares Outstanding		765,080,968
Current Fiscal Year End Date	--06-30
Amendment Flag	false
Entity Central Index Key	0001024305
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY