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Discontinued Operations - Components of Discontinued Operations (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Discontinued operations, net of income taxes $ (2.8) $ (21.5) $ (15.3) $ (33.0)
Adjustment for workers’ compensation, product liability, other postretirement benefits and other, net of income tax benefit (expense) (1.4) (0.9) (2.0) (1.3)
Provision for environmental liabilities and expenses, net of recoveries, net of income tax benefit (expense) 0.7 3.8 1.2 4.3
Provision for legal reserves and expenses, net of recoveries, net of income tax benefit (0.4) 2.0 2.2 4.4
Discontinued operations gain on insurance settlement 18.0   18.0  
Adjustment for workers’ compensation, product liability, other postretirement benefits and other, net of income tax benefit (expense)        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Discontinued operations, net of income taxes (1.5) (2.3) (2.5) (2.4)
Provision for environmental liabilities and expenses, net of recoveries, net of income tax benefit (expense)        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Discontinued operations, net of income taxes (2.7) (11.9) (4.4) (14.1)
Provision for legal reserves and expenses, net of recoveries, net of income tax benefit (expense)        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Discontinued operations, net of income taxes $ 1.4 $ (7.3) $ (8.4) $ (16.5)