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Discontinued Operations - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
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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

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