IMPAIRMENT, RESTRUCTURING AND OTHER EXPENSES - Restructuring, settlement and impairment provisions (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Restructuring Cost and Reserve [Line Items]
Total impairment, restructuring and other expenses	$ 1.0	$ 25.5
Subsea
Restructuring Cost and Reserve [Line Items]
Total impairment, restructuring and other expenses	(3.4)	19.7
Surface Technologies
Restructuring Cost and Reserve [Line Items]
Total impairment, restructuring and other expenses	1.6	2.8
Corporate and other
Restructuring Cost and Reserve [Line Items]
Total impairment, restructuring and other expenses	$ 2.8	$ 3.0