IMPAIRMENT, RESTRUCTURING AND OTHER EXPENSES - Restructuring, settlement and impairment provisions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Restructuring Cost and Reserve [Line Items]
Total impairment, restructuring and other expenses	$ 7.2	$ 2.0	$ 8.2	$ 27.5
Subsea
Restructuring Cost and Reserve [Line Items]
Total impairment, restructuring and other expenses	2.6	1.0	(0.8)	20.7
Surface Technologies
Restructuring Cost and Reserve [Line Items]
Total impairment, restructuring and other expenses	4.4	1.0	6.0	3.8
Corporate and other
Restructuring Cost and Reserve [Line Items]
Total impairment, restructuring and other expenses	$ 0.2	$ 0.0	$ 3.0	$ 3.0