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Discontinued Operations - Results of Discontinued Operations (Details) - Superform U.S Business - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Guarantor obligations, liquidation proceeds, monetary amount | $ 3.1 |  |  |
Discontinued operations, held-for-sale |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Net sales | 9.3 | $ 6.6 | $ 8.2 |
Cost of goods sold | (7.2) | (5.2) | (6.4) |
Gross profit | 2.1 | 1.4 | 1.8 |
Selling, general and administrative expenses | (5.5) | (1.9) | (1.7) |
Restructuring credit / (charge) | 0.0 | 0.0 | (0.2) |
Disposal related credit | 0.4 | 0.4 | 0.2 |
Loss on assets held-for-sale | (2.8) | 0.0 | 0.0 | $ (2.6)
(Loss) / income before income taxes | (5.8) | (0.1) | 0.1 |
Credit for income taxes | 0.4 | 0.2 | 0.6 |
Net (loss) / income | $ (5.4) | $ 0.1 | $ 0.7 |

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