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Other (expense), net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Intercompany Foreign Currency Balance [Line Items]
Postretirement expense	$ (192.9)	$ (9.7)
Foreign exchange gains (losses)	3.7	2.2
Environmental costs and other, net	(7.7)	(13.5)
Total other (expense), net	(196.9)	(21.0)
Liquidation of Foreign Subsidiaries
Intercompany Foreign Currency Balance [Line Items]
Foreign exchange gains (losses)	3.5	(1.1)
Pension Plans
Intercompany Foreign Currency Balance [Line Items]
Settlement losses to defined benefit pension plans	$ 183.2	$ 0.0

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Other Nonoperating Income (Expense), Environmental And Other

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