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Discontinued Operations - Schedule of Financial Results from Discontinued Operations (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Income from discontinued operations, net of tax | $ 5.2 | $ 7.2 | $ 37.8 | $ 13.9
Engineered Materials | Discontinued Operations, Held-for-sale |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Net sales | 60.3 | 48.3 | 173.3 | 132.9
Cost of sales | 47.2 | 35.2 | 137.0 | 101.1
Selling, general and administrative | 6.5 | 4.1 | 15.6 | 13.5
Restructuring charges | 0.0 | 0.0 | 0.0 | 0.6
Income from discontinued operations | 6.6 | 9.0 | 20.7 | 17.7
Income tax (benefit) provision | 1.4 | 1.8 | (17.1) | 3.8
Income from discontinued operations, net of tax | 5.2 | $ 7.2 | 37.8 | $ 13.9
Deferred tax benefit | $ 21.5 |  | $ 21.5 |

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