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INVESTMENTS - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Feb. 16, 2021
Schedule of Equity Method Investments [Line Items]
Income from equity affiliates	$ 44.6	$ 0.6	$ 64.6
Investments in equity affiliates	325.0	292.4
Income (loss) from investment in Technip Energies	(27.7)	322.2	0.0
Dofcon Brasil AS
Schedule of Equity Method Investments [Line Items]
Value of guarantees	$ 441.0
Ownership percentage	50.00%
Investments in equity affiliates	$ 312.8	276.9
Serimax Holdings SAS
Schedule of Equity Method Investments [Line Items]
Ownership percentage	20.00%
Investments in equity affiliates	$ 8.6	15.0
Magnora ASA, Magnora Offshore Wind
Schedule of Equity Method Investments [Line Items]
Ownership percentage	20.00%
Investments in equity affiliates	$ 3.4
Technip Energies
Schedule of Equity Method Investments [Line Items]
Ownership percentage				49.90%
Subsea
Schedule of Equity Method Investments [Line Items]
Income from equity affiliates		$ 0.6	$ 64.6