| Cover Document | Oct. 24, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Oct. 24, 2024 |
| Entity Registrant Name | TechnipFMC plc |
| Entity Incorporation, State or Country Code | X0 |
| Entity File Number | 001-37983 |
| Entity Tax Identification Number | 98-1283037 |
| Entity Address, Address Line One | One Subsea Lane |
| Entity Address, City or Town | Houston |
| Entity Address, State or Province | TX |
| Entity Address, Country | US |
| Entity Address, Postal Zip Code | 77044 |
| Country Region | 1 |
| City Area Code | 281 |
| Local Phone Number | 591-4000 |
| Title of 12(b) Security | Ordinary shares, $1.00 par value per share |
| Trading Symbol | FTI |
| Security Exchange Name | NYSE |
| 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 | 0001681459 |
| Amendment Flag | false |
