CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income attributable to TechnipFMC plc		$ 157.1	$ 0.4
Net income attributable to non-controlling interests		(3.8)	(7.4)
Net income attributable to TechnipFMC plc, including non-controlling interests		160.9	7.8
Foreign currency translation adjustments
Net unrealized gains (losses) arising during the period		(62.7)	15.9
Reclassification adjustment for net losses (gains) included in net income		10.5	(0.1)
Foreign currency translation adjustments	[1]	(52.2)	15.8
Net losses on hedging instruments
Net losses arising during the period		(34.4)	(6.1)
Reclassification adjustment for net (gains) losses included in net income		(3.1)	1.6
Net losses on hedging instruments	[2]	(37.5)	(4.5)
Pension and other post-retirement benefits
Net gains (losses) arising during the period		4.1	(2.0)
Reclassification adjustment for amortization of prior service cost included in net income		0.1	0.1
Reclassification adjustment for amortization of net actuarial loss included in net income		3.1	2.2
Reclassification adjustment for net gain included in net income		(2.3)	0.0
Net pension and other post-retirement benefits	[3]	5.0	0.3
Other comprehensive income (loss)		(84.7)	11.6
Comprehensive income		76.2	19.4
Comprehensive (income) attributable to non-controlling interest		(3.9)	(5.4)
Comprehensive income attributable to TechnipFMC plc		$ 72.3	$ 14.0

[1] Net of income tax of nil for the three months ended March 31, 2024 and 2023.

[2] Net of income tax benefit (expense) of $6.6 million and $(4.6) million for the three months ended March 31, 2024 and 2023, respectively.

[3] Net of income tax benefit (expense) of $1.0 million and $(1.0) million for the three months ended March 31, 2024 and 2023, respectively.