Revenue - Disaggregation of Revenue, Geographical (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Lease revenue	$ 51.0	$ 62.6
Total revenue	3,130.3	2,913.0
Services
Disaggregation of Revenue [Line Items]
Revenue	2,307.7	2,051.1
Products
Disaggregation of Revenue [Line Items]
Revenue	771.6	799.3
Subsea
Disaggregation of Revenue [Line Items]
Revenue	1,233.6	1,157.4
Lease revenue	19.5	27.9
Subsea \| Services
Disaggregation of Revenue [Line Items]
Revenue	717.5	645.6
Subsea \| Products
Disaggregation of Revenue [Line Items]
Revenue	516.1	511.8
Subsea \| Europe, Russia, Central Asia
Disaggregation of Revenue [Line Items]
Revenue	423.1	399.6
Subsea \| Americas
Disaggregation of Revenue [Line Items]
Revenue	436.5	377.1
Subsea \| Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue	137.6	99.7
Subsea \| Africa
Disaggregation of Revenue [Line Items]
Revenue	214.6	145.8
Subsea \| Middle East
Disaggregation of Revenue [Line Items]
Revenue	21.8	135.2
Technip Energies
Disaggregation of Revenue [Line Items]
Revenue	1,547.7	1,335.1
Lease revenue	0.0	0.0
Technip Energies \| Services
Disaggregation of Revenue [Line Items]
Revenue	1,534.1	1,335.1
Technip Energies \| Products
Disaggregation of Revenue [Line Items]
Revenue	13.6	0.0
Technip Energies \| Europe, Russia, Central Asia
Disaggregation of Revenue [Line Items]
Revenue	607.3	641.6
Technip Energies \| Americas
Disaggregation of Revenue [Line Items]
Revenue	296.7	160.4
Technip Energies \| Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue	283.8	301.9
Technip Energies \| Africa
Disaggregation of Revenue [Line Items]
Revenue	209.8	60.4
Technip Energies \| Middle East
Disaggregation of Revenue [Line Items]
Revenue	150.1	170.8
Surface Technologies
Disaggregation of Revenue [Line Items]
Revenue	298.0	357.9
Lease revenue	31.5	34.7
Surface Technologies \| Services
Disaggregation of Revenue [Line Items]
Revenue	56.1	70.4
Surface Technologies \| Products
Disaggregation of Revenue [Line Items]
Revenue	241.9	287.5
Surface Technologies \| Europe, Russia, Central Asia
Disaggregation of Revenue [Line Items]
Revenue	50.3	55.8
Surface Technologies \| Americas
Disaggregation of Revenue [Line Items]
Revenue	149.3	193.2
Surface Technologies \| Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue	34.3	45.0
Surface Technologies \| Africa
Disaggregation of Revenue [Line Items]
Revenue	13.6	11.3
Surface Technologies \| Middle East
Disaggregation of Revenue [Line Items]
Revenue	50.5	52.6
Operating Segments \| Subsea
Disaggregation of Revenue [Line Items]
Total revenue	1,253.1	1,185.3
Operating Segments \| Technip Energies
Disaggregation of Revenue [Line Items]
Total revenue	1,547.7	1,335.1
Operating Segments \| Surface Technologies
Disaggregation of Revenue [Line Items]
Total revenue	$ 329.5	$ 392.6

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Amount of lease income from operating, direct financing, and sales-type leases. Includes, but is not limited to, variable lease payments, interest income, profit (loss) recognized at commencement, and lease payments paid and payable to lessor.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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