| Document and Entity Information | Dec. 17, 2020 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001724965 |
| Document Type | 8-K |
| Document Period End Date | Dec. 17, 2020 |
| Entity Registrant Name | Talos Energy Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-38497 |
| Entity Tax Identification Number | 82-3532642 |
| Entity Address, Address Line One | 333 Clay Street |
| Entity Address, Address Line Two | Suite 3300 |
| Entity Address, City or Town | Houston |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 77002 |
| City Area Code | (713) |
| Local Phone Number | 328-3000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock |
| Trading Symbol | TALO |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
