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Discontinued Operation and Dispositions - Results of Operations (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Operating expenses: |  |  |
Income from discontinued operations, net of taxes | $ 11.4 | $ 198.4 | $ 121.0
Discontinued Operations, Disposed of by Sale |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations |  |  |
Net sales | 2.0 | 188.9 | 301.4
Cost of sales | 1.3 | 124.6 | 192.1
Gross profit | 0.7 | 64.3 | 109.3
Operating expenses: |  |  |
Selling, general, and administrative expenses | 0.4 | 43.8 | 76.0
Other | 0.0 | 0.2 | 3.6
Total operating expenses | 0.4 | 44.0 | 79.6
Operating income from discontinued operations | 0.3 | 20.3 | 29.7
Income from discontinued operations before income taxes | 0.3 | 20.3 | 29.7
Income tax benefit (expense) | 0.1 | (1.8) | 13.9
Income from discontinued operations, net of taxes before gain from sale of discontinued operations | 0.2 | 22.1 | 15.8
Gain from sale of discontinued operations, net of taxes | 11.2 | 176.3 | 105.2
Income from discontinued operations, net of taxes | $ 11.4 | $ 198.4 | $ 121.0

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