Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	Apr. 28, 2017
Document And Entity Information [Abstract]
Document Type	10-Q/A
Amendment Flag	true
Amendment Description	TechnipFMC plc (the “Company”) is filing this Amendment No. 1 (“Form 10-Q/A”) to our Quarterly Report on Form 10-Q for the quarter-ended March 31, 2017, which was originally filed (“Original Filing”) on May 4, 2017, to reflect the restatement of its unaudited interim condensed consolidated U.S. GAAP financial statements for all periods presented in the Original Filing and to amend related disclosures, including our conclusion on disclosure controls and procedures, in order to correct errors in our financial statements caused by the miscalculation of the foreign currency effects on certain of our engineering and construction projects and related ownership interests, as more fully described in Note 2 to the condensed consolidated financial statements included in Part I, Item 1 of this Form 10-Q/A. Additionally, conforming changes occur throughout this filing because of the changes to the condensed consolidated financial statements.
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q1
Trading Symbol	fti
Entity Registrant Name	TechnipFMC plc
Entity Central Index Key	0001681459
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		466,592,009