IMPAIRMENT, RESTRUCTURING AND OTHER EXPENSES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring and Impairment [Line Items]
Impairment of property, plant and equipment		$ 24.9	$ 190.4	$ 491.6
Goodwill, impairment charges			3,083.4	1,988.7
Operating lease right-of-use assets		$ 24.2	20.0
Subsea
Restructuring and Impairment [Line Items]
Impairment of property, plant and equipment			88.4	153.8
Goodwill, impairment charges	$ 2,747.5		2,747.5
Surface Technologies
Restructuring and Impairment [Line Items]
Impairment of property, plant and equipment			82.0	$ 168.9
Goodwill, impairment charges	$ 335.9		$ 335.9