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Discontinued Operations - Additional Information (Details) - Discontinued operations - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Jan. 30, 2023
GPT
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Proceeds from sale of investment projects					$ 31.4
Gain (loss) on sales of business	$ 14.6
Engineered Materials Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Income tax expense		$ 0.9	$ (0.1)	$ (0.9)
Engineered Materials Segment \| Adjustment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Income tax expense		$ 0.1		$ 0.5