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Goodwill and Other Intangible Assets, net - Carrying Amount (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($)
Goodwill
Goodwill, beginning balance	$ 518.5
Segment change reallocation	0.0
Foreign currency translation	3.5
Goodwill, ending balance	522.0
Performance Materials
Goodwill
Goodwill, beginning balance	4.3
Segment change reallocation	0.0
Foreign currency translation	0.0
Goodwill, ending balance	4.3
Performance Chemicals
Goodwill
Goodwill, beginning balance	514.2
Segment change reallocation	(165.0)
Foreign currency translation	0.0
Goodwill, ending balance	349.2
Advanced Polymer Technologies segment
Goodwill
Goodwill, beginning balance	0.0
Segment change reallocation	165.0
Foreign currency translation	3.5
Goodwill, ending balance	$ 168.5

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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