| Document and Entity Information | Sep. 07, 2021 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001024305 |
| Document Type | 8-K |
| Document Period End Date | Sep. 7, 2021 |
| Entity Registrant Name | Coty Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-35964 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Class A Common Stock, $0.01 per share |
| Trading Symbol | COTY |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
