BUSINESS SEGMENTS - Schedule of Segment Revenue and Segment Operating Profit (Details) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) segment	Jun. 30, 2025 USD ($)
Segment Reporting, Measurement Disclosures [Abstract]
Number of reportable segments \| segment			2
Segment Reporting
Revenue	$ 2,763.1	$ 2,534.7	$ 5,255.8	$ 4,768.3
Total segment operating profit	525.5	403.7	911.6	681.8
Total corporate items	(49.3)	(28.9)	(79.6)	(76.7)
Income before income taxes	476.2	374.8	832.0	605.1
Subsea
Segment Reporting
Revenue	2,486.9	2,216.3	4,695.3	4,152.5
Surface Technologies
Segment Reporting
Revenue	276.2	318.4	560.5	615.8
Operating Segments \| Subsea
Segment Reporting
Revenue	2,486.9	2,216.3	4,695.3	4,152.5
Cost of sales	1,866.4	1,700.8	3,560.7	3,240.7
Other segment items	134.0	135.2	299.1	283.6
Total segment operating profit	486.5	380.3	835.5	628.2
Operating Segments \| Surface Technologies
Segment Reporting
Revenue	276.2	318.4	560.5	615.8
Cost of sales	217.5	247.4	440.1	484.0
Other segment items	19.7	47.6	44.3	78.2
Total segment operating profit	39.0	23.4	76.1	53.6
Corporate items
Segment Reporting
Corporate expense	(26.4)	(26.6)	(63.5)	(52.4)
Net interest expense	(3.6)	(14.4)	(9.6)	(24.3)
Foreign exchange gain (loss), net	$ (19.3)	$ 12.1	$ (6.5)	$ 0.0

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