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Other (expense), net (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Intercompany Foreign Currency Balance [Line Items] |  |  |
Postretirement expense | $ (387.1) | $ (43.2) | $ (548.6)
Foreign exchange losses | (0.2) | (6.8) | (2.5)
Environmental costs and other, net | (6.6) | (32.4) | (29.2)
Total other (expense), net | (393.9) | (82.4) | (580.3)
Foreign currency (gains) losses | 1.0 | 47.4 | 22.8
Foreign currency (gains) losses related to exiting foreign countries |  |  |
Intercompany Foreign Currency Balance [Line Items] |  |  |
Foreign currency (gains) losses | (3.7) | $ 2.9 | 4.0
Pension Plans |  |  |
Intercompany Foreign Currency Balance [Line Items] |  |  |
Settlement losses | $ 348.9 |  | $ 499.4

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