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Discontinued Operations - Narrative (Details) - USD ($) |  | 12 Months Ended |
--- | --- | --- | ---
Nov. 30, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Aug. 01, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Income from discontinued operations, net of tax |  | $ 0 | $ 198,200,000 | $ 62,300,000 |
Engineered Papers Business |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Total proceeds |  |  |  |  | $ 620,000,000
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 |
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 |  |  |

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