COMMITMENTS AND CONTINGENT LIABILITIES - Narrative (Details) € in Thousands, $ in Millions			3 Months Ended	12 Months Ended
	Jul. 13, 2023 EUR (€)	Jun. 22, 2023 EUR (€)	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2023 EUR (€)	Dec. 31, 2022 USD ($)
Guarantor Obligations [Line Items]
Legal settlement liability				$ 171.1	€ 154,800	$ 0.0
Convention Judiciaire d'Interet Public, (“CJIP”)
Guarantor Obligations [Line Items]
Litigation settlement, amount awarded to other party		€ 179,450
Payments for legal settlements	€ 24,700
Loss contingency accrual, provision | $			$ 126.5
Technip UK | Convention Judiciaire d'Interet Public, (“CJIP”)
Guarantor Obligations [Line Items]
Litigation settlement, amount awarded to other party		154,800
Technip Energies France | Convention Judiciaire d'Interet Public, (“CJIP”)
Guarantor Obligations [Line Items]
Litigation settlement, amount awarded to other party		54,100
Technip UK And Technip Energies France | Convention Judiciaire d'Interet Public, (“CJIP”)
Guarantor Obligations [Line Items]
Litigation settlement, amount awarded to other party		208,900
Technip Energies | Convention Judiciaire d'Interet Public, (“CJIP”)
Guarantor Obligations [Line Items]
Litigation settlement, amount awarded to other party		€ 29,450
Indirect guarantee of indebtedness
Guarantor Obligations [Line Items]
Guarantor obligations, term				5 years