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INVESTMENTS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
INVESTMENTS (Details) - USD ($) $ in Millions	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Schedule of Equity Method Investments
Income from equity affiliates	$ 4.3	$ 12.8	$ 9.7	$ 20.5
Investments in equity affiliates	301.9		301.9		$ 292.4
Income (loss) from investment in Technip Energies			(27.7)	$ 323.3
Magnora ASA, Magnora Offshore Wind
Schedule of Equity Method Investments
Investments in equity affiliates	$ 2.5		$ 2.5
Equity method investment, ownership percentage	20.00%		20.00%