Condensed Consolidated Statements Of Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenue
Lease revenue	$ 45.0	$ 32.8
Total revenue	1,555.8	1,632.0
Costs and expenses
Cost of lease revenue	39.8	26.2
Selling, general and administrative expense	159.6	147.6
Research and development expense	14.6	16.5
Impairment, restructuring and other expenses	1.0	25.5
Total costs and expenses	1,545.4	1,630.8
Other income, net	40.8	35.6
Income from equity affiliates	5.4	7.7
Income (loss) from investment in Technip Energies	(28.5)	470.1
Income before net interest expense and income taxes	28.1	514.6
Interest income	4.0	4.1
Interest expense	(37.9)	(38.6)
Loss on early extinguishment of debt	0.0	(23.5)
Income (loss) before income taxes	(5.8)	456.6
Provision for income taxes	28.5	24.5
Income (loss) from continuing operations	(34.3)	432.1
Net (income) from continuing operations attributable to non-controlling interests	(8.0)	(1.8)
Income (loss) from continuing operations attributable to TechnipFMC plc	(42.3)	430.3
Loss from discontinued operations	(19.4)	(60.2)
Income from discontinued operations attributable to non-controlling interests	0.0	(1.9)
Net income (loss) attributable to TechnipFMC plc	$ (61.7)	$ 368.2
Earnings Per Share, Basic and Diluted [Abstract]
Earnings (loss) per share from continuing operations attributable to TechnipFMC plc Basic (usd per share)	$ (0.09)	$ 0.96
Earnings (loss) per share from continuing operations attributable to TechnipFMC plc Diluted (usd per share)	(0.09)	0.95
Earnings (loss) per share from discontinued operations attributable to TechnipFMC plc basic (usd per share)	(0.04)	(0.14)
Earnings (loss) per share from discontinued operations attributable to TechnipFMC plc diluted (usd per share)	(0.04)	(0.14)
Total earnings (loss) per share attributable to TechnipFMC plc Basic (usd per share)	(0.13)	0.82
Total earnings (loss) per share attributable to TechnipFMC plc Diluted (usd per share)	$ (0.13)	$ 0.81
Weighted average shares outstanding (Note 6)
Basic (in shares)	451.1	449.7
Diluted (in shares)	451.1	451.1
Service revenue
Revenue
Revenue	$ 896.7	$ 826.2
Costs and expenses
Cost of goods and services sold	831.1	743.8
Products
Revenue
Revenue	614.1	773.0
Costs and expenses
Cost of goods and services sold	$ 499.3	$ 671.2