CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss) attributable to TechnipFMC plc		$ (87.2)	$ 2.1	$ (86.8)	$ (59.6)
(Income) loss from continuing operations attributable to non-controlling interests		9.1	(5.7)	1.7	(13.7)
Net income (loss) attributable to TechnipFMC plc, including non-controlling interests		(96.3)	7.8	(88.5)	(45.9)
Foreign currency translation adjustments
Foreign currency translation adjustments	[1]	34.1	(130.0)	49.9	(4.3)
Net gains (losses) on hedging instruments
Net losses arising during the period		(18.8)	(43.7)	(24.9)	(58.6)
Reclassification adjustment for net losses included in net income (loss)		7.0	5.4	8.6	11.8
Net losses on hedging instruments	[2]	(11.8)	(38.3)	(16.3)	(46.8)
Pension and other post-retirement benefits
Net gains (losses) arising during the period		2.2	(1.3)	0.2	(1.5)
Reclassification adjustment for amortization of prior service cost included in net income (loss)		0.0	0.1	0.1	0.2
Reclassification adjustment for amortization of net actuarial loss included in net income (loss)		2.2	3.0	4.4	6.0
Net pension and other post-retirement benefits	[3]	4.4	1.8	4.7	4.7
Other comprehensive income (loss), net of tax		26.7	(166.5)	38.3	(46.4)
Comprehensive loss		(69.6)	(158.7)	(50.2)	(92.3)
Comprehensive (income) loss attributable to non-controlling interest		10.3	(0.9)	4.9	(9.3)
Comprehensive (loss) attributable to TechnipFMC plc		$ (59.3)	$ (159.6)	$ (45.3)	$ (101.6)

[1] Net of income tax of nil for the three and six months ended June 30, 2023 and 2022.

[2] Net of income tax (expense) benefit of $(6.4) million and $(2.0) million for the three months ended June 30, 2023 and 2022, respectively, and $(11.0) million and $0.1 million for the six months ended June 30, 2023 and 2022, respectively.

[3] Net of income tax (expense) benefit of $3.0 million and $(2.7) million for the three months ended June 30, 2023 and 2022, respectively, and $2.0 million and $(3.1) million for the six months ended June 30, 2023 and 2022, respectively.