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Discontinued Operations (Financial Results) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Operating profit | $ 87.1 | $ 138.2 | $ 136.9 | $ 140.1 | $ 53.9 | $ 75.9 | $ 28.7 | $ 81.7 | $ 502.3 | $ 240.2 | $ 183.1
Miscellaneous expense, net |  |  |  |  |  |  |  |  | 20.5 | 14.9 | 4.9
Income from discontinued operations, net of tax | $ 3.3 | $ 5.2 | $ 27.6 | $ 5.0 | $ 4.3 | $ 7.2 | $ 1.4 | $ 5.0 | 41.1 | 17.9 | 21.0
Deferred income taxes |  |  |  |  |  |  |  |  | (10.8) | (16.0) | 28.3
Engineered Materials |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Deferred income taxes |  |  |  |  |  |  |  |  | 20.6 |  |
Discontinued Operations, Held-for-sale | Engineered Materials |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 228.0 | 175.6 | 208.6
Cost of sales |  |  |  |  |  |  |  |  | 181.3 | 134.5 | 161.9
Selling, general and administrative |  |  |  |  |  |  |  |  | 19.8 | 17.8 | 19.4
Restructuring charges |  |  |  |  |  |  |  |  | 0.0 | 0.6 | 0.0
Operating profit |  |  |  |  |  |  |  |  | 26.9 | 22.7 | 27.3
Miscellaneous expense, net |  |  |  |  |  |  |  |  | (1.3) | 0.0 | (0.5)
Income from discontinued operations |  |  |  |  |  |  |  |  | 25.6 | 22.7 | 26.8
Income tax (benefit) provision |  |  |  |  |  |  |  |  | $ (15.5) | 4.8 | 5.8
Income from discontinued operations, net of tax |  |  |  |  |  |  |  |  |  | $ 17.9 | $ 21.0

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