Cover - USD ($) $ in Billions	12 Months Ended
	Jun. 30, 2021	Aug. 19, 2021	Dec. 31, 2020
Cover [Abstract]
Document Period End Date	Jun. 30, 2021
Document Annual Report	true
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, Postal Zip Code	10118
Entity Address, State or Province	NY
Entity Address, City or Town	New York,
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			$ 2.0
Entity Common Stock, Shares Outstanding		766,065,761
Entity Central Index Key	0001024305
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	true
Amendment Description	Coty Inc., a Delaware corporation, and its subsidiaries (collectively, the “Company” or “Coty”, which may also be referred to as “we”, “us” or “our”) is filing this Amendment No. 1 (“the Amendment”) to our Annual Report on Form 10-K (the “Form 10-K”) for the fiscal year ended June 30, 2021, which was filed with the Securities and Exchange Commission (“SEC”) on August 26, 2021, to include the audited financial statements of Rainbow JVCO Limited and its subsidiaries (together, “Wella”), pursuant to Rule 3-09 of Regulation S-X. Wella has met the conditions of a significant subsidiary under Rule 1-02(w) of Regulation S-X for the year ended June 30, 2021. In accordance with Rule 3-09(b), the separate audited financial statements of Wella for the seven months ended June 30, 2021 are being filed as an amendment to the Form 10-K as Exhibit 99.1 included in Part IV, Item 15 of this filing within 90 days after the end of Wella’s fiscal year.This Amendment also updates, amends and supplements Part IV, Item 15 of the Form 10-K to include the filing of Exhibit 23.2, consent of Deloitte & Touche LLP and Exhibits 31.3, 31.4, 32.3 and 32.4, certifications of our Chief Executive Officer and Chief Financial Officer, pursuant to Rule 13a-14(a) and (b) of the Securities Exchange Act of 1934, as amended.Except as described above, no other changes have been made to the Form 10-K. This Amendment does not reflect subsequent events that may have occurred after the original filing date of the Form 10-K or modify or update in any way disclosures made in the 10-K. Among other things, forward-looking statements made in the Form 10-K have not been revised to reflect events that occurred or facts that became known to us after the filing of the Form 10-K, and such forward-looking statements should be read in their historical context. Furthermore, this Amendment should be read in conjunction with the Form 10-K and any subsequent filings with the SEC.
Document Type	10-K/A
Current Fiscal Year End Date	--06-30