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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