BUSINESS SEGMENTS - Schedule of Segment Revenue and Segment Operating Profit (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) segment	Mar. 31, 2022 USD ($)
Segment Reporting, Measurement Disclosures [Abstract]
Number of reportable segments | segment	2
Segment Reporting Information
Total segment revenue	$ 1,717.4	$ 1,555.8
Total segment operating profit	89.2	57.7
Corporate expense	(27.4)	(29.5)
Net interest expense	(18.7)	(33.9)
Loss from investment in Technip Energies (Note 9)	0.0	(28.5)
Net foreign exchange gains	2.1	28.4
Income (loss) before income taxes	45.2	(5.8)
Operating Segments | Subsea
Segment Reporting Information
Total segment revenue	1,387.6	1,289.1
Total segment operating profit	66.8	54.0
Operating Segments | Surface Technologies
Segment Reporting Information
Total segment revenue	329.8	266.7
Total segment operating profit	22.4	3.7
Corporate
Segment Reporting Information
Total corporate items	$ (44.0)	$ (63.5)