DISCONTINUED OPERATIONS - Income from discontinued operations, net of tax (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income taxes	$ 19.4	$ 58.3
Loss from discontinued operations, net of income taxes	(19.4)	(60.2)
Spinoff | Technip Energies N.V.
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	0.0	906.0
Costs and expenses	0.0	(889.3)
Other expense, net	0.0	(18.6)
Loss from discontinued operations before income taxes	0.0	(1.9)
Loss from discontinued operations, net of income taxes	$ (19.4)	$ (60.2)