BUSINESS SEGMENTS - Schedule of Segment Revenue and Segment Operating Profit (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($) segment	Mar. 31, 2023 USD ($)
Segment Reporting, Measurement Disclosures [Abstract]
Number of reportable segments | segment	2
Segment Reporting Information
Decrease in assets	$ 567.9
Total segment revenue	2,042.0	$ 1,717.4
Total segment operating profit	260.0	89.2
Total corporate items	(49.4)	(44.0)
Income before income taxes	210.6	45.2
Operating Segments
Segment Reporting Information
Decrease in assets	160.9
Operating Segments | Subsea
Segment Reporting Information
Total segment revenue	1,734.8	1,387.6
Total segment operating profit	156.6	66.8
Operating Segments | Surface Technologies
Segment Reporting Information
Decrease in assets	152.1
Total segment revenue	307.2	329.8
Total segment operating profit	103.4	22.4
Corporate
Segment Reporting Information
Decrease in assets	254.9
Corporate expense	(32.2)	(27.4)
Net interest expense	(12.7)	(18.7)
Foreign exchange gains (losses)	$ (4.5)	$ 2.1