Other (expense), net (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Intercompany Foreign Currency Balance [Line Items]
Postretirement expense	$ (21.5)	$ (146.2)
Foreign exchange gains (losses)	1.3	(14.9)
Other, net	3.3	19.0
Total other (expense), net	(16.9)	(142.1)
Net gain related to favorable judgement		14.9
Liquidation of Foreign Subsidiaries
Intercompany Foreign Currency Balance [Line Items]
Foreign exchange gains (losses)	1.1	(0.5)
Pension Plans
Intercompany Foreign Currency Balance [Line Items]
Settlement losses to defined benefit pension plans	$ 0.0	$ 132.3

Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement.

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