Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue
Lease revenue	$ 215.1	$ 158.4	$ 142.0
Total revenue	6,700.4	6,403.5	6,530.6
Costs and expenses
Cost of lease revenue	166.2	128.4	116.7
Selling, general and administrative expense	616.8	644.9	724.1
Research and development expense	67.0	78.4	75.3
Impairment, restructuring and other expense	15.2	66.7	3,402.0
Total costs and expenses	6,503.1	6,369.6	10,037.2
Other income, net	5.4	46.6	25.1
Income from equity affiliates	44.6	0.6	64.6
Income (loss) from Investment in Technip Energies	(27.7)	322.2	0.0
Income (loss) before net interest expense and income taxes	219.6	403.3	(3,416.9)
Interest income	17.8	14.0	52.3
Interest expense	(138.7)	(157.3)	(134.1)
Loss on early extinguishment of debt	(29.8)	(61.9)	0.0
Income (loss) before income taxes	68.9	198.1	(3,498.7)
Provision for income taxes	105.4	111.1	19.4
Income (loss) from continuing operations	(36.5)	87.0	(3,518.1)
(Income) loss from continuing operations attributable to non-controlling interests	(25.4)	0.8	(34.5)
Income (loss) from continuing operations attributable to TechnipFMC plc	(61.9)	87.8	(3,552.6)
Income (loss) from discontinued operations	(45.3)	(72.6)	280.2
Income from discontinued operations attributable to non-controlling interests	0.0	(1.9)	(15.2)
Net income (loss) attributable to TechnipFMC plc	$ (107.2)	$ 13.3	$ (3,287.6)
Earnings Per Share, Basic and Diluted [Abstract]
Earnings (loss) per share from continuing operations attributable to TechnipFMC plc Basic (usd per share)	$ (0.14)	$ 0.19	$ (7.92)
Earnings (loss) per share from continuing operations attributable to TechnipFMC plc Diluted (usd per share)	(0.14)	0.19	(7.92)
Earnings (loss) per share from discontinued operations attributable to TechnipFMC plc basic (usd per share)	(0.10)	(0.17)	0.59
Earnings (loss) per share from discontinued operations attributable to TechnipFMC plc diluted (usd per share)	(0.10)	(0.16)	0.59
Total earnings (loss) per share attributable to TechnipFMC plc Basic (usd per share)	(0.24)	0.03	(7.33)
Earnings (loss) per share from continuing operations diluted (usd per share)	$ (0.24)	$ 0.03	$ (7.33)
Weighted average shares outstanding (Note 7)
Basic (in shares)	449.5	450.5	448.7
Diluted (in shares)	449.5	454.6	448.7
Service revenue
Revenue
Revenue	$ 3,628.3	$ 3,440.7	$ 3,266.8
Costs and expenses
Cost of product revenue	3,042.2	3,084.7	2,946.9
Product revenue
Revenue
Revenue	2,857.0	2,804.4	3,121.8
Costs and expenses
Cost of product revenue	$ 2,595.7	$ 2,366.5	$ 2,772.2