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Discontinued Operations - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Net pretax actuarial gain and prior service credit $ 2.9 $ 3.6  
After-tax actuarial gain and prior service credit 1.7 2.2  
Payments of other discontinued reserves 30.6 21.0 $ 29.9
Workers’ compensation, product liability, and indemnification reserves      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Payments of other discontinued reserves 2.4 1.6 1.0
Postretirement medical and life insurance benefits reserve, net      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Payments of other discontinued reserves 0.3 0.4 0.5
Reserves for legal proceedings      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Payments of other discontinued reserves $ 27.9 $ 19.0 $ 28.4