| Cover | Oct. 20, 2020 | Aug. 20, 2020 | Apr. 30, 2020 |
| Cover [Abstract] | |||
| Document Type | 8-K | ||
| Document Period End Date | Oct. 20, 2020 | ||
| Entity Registrant Name | Coty Inc. | ||
| Entity Incorporation, State or 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 | ||
| Entity Emerging Growth Company | false | ||
| Entity Central Index Key | 0001024305 | ||
| Amendment Flag | false |
