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Discontinued Operations - Narrative (Details) - USD ($)		12 Months Ended
Discontinued Operations - Narrative (Details) - USD ($)	Nov. 30, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations, net of tax		$ 198,200,000	$ 62,300,000	$ 87,200,000
Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations, net of tax		198,200,000	$ 62,300,000	$ 87,200,000
Discontinued Operations, Disposed of by Sale \| Engineered Papers Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale	$ 176,300,000
Income from discontinued operations, net of tax	$ 170,000,000
Impairment expense		$ 0