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GOODWILL (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Goodwill [Roll Forward]
Beginning Balance	$ 63.8
Foreign currency impact	(2.1)
Ending Balance	61.7
Engineered Materials
Goodwill [Roll Forward]
Accumulated impairment loss	(646.1)	$ (646.1)
Latex Binders
Goodwill [Roll Forward]
Beginning Balance	15.4
Foreign currency impact	(0.6)
Ending Balance	14.8
Plastics Solutions
Goodwill [Roll Forward]
Beginning Balance	44.0
Foreign currency impact	(1.3)
Ending Balance	42.7
Polystyrene
Goodwill [Roll Forward]
Beginning Balance	4.4
Foreign currency impact	(0.2)
Ending Balance	$ 4.2

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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