| Document and Entity Information | Jan. 21, 2021 |
| Cover [Abstract] | |
| Entity Registrant Name | Chemours Co |
| Amendment Flag | false |
| Entity Central Index Key | 0001627223 |
| Document Type | 8-K |
| Document Period End Date | Jan. 21, 2021 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-36794 |
| Entity Tax Identification Number | 46-4845564 |
| Entity Address, Address Line One | 1007 Market Street |
| Entity Address, City or Town | Wilmington |
| Entity Address, State or Province | DE |
| Entity Address, Postal Zip Code | 19801 |
| City Area Code | (302) |
| Local Phone Number | 773-1000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock ($0.01 par value) |
| Trading Symbol | CC |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
