Other (expense), net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Intercompany Foreign Currency Balance [Line Items]
Postretirement expense	$ (146.2)	$ (192.9)
Foreign exchange gains (losses)	(14.9)	3.7
Other, net	19.0	(7.7)
Total other (expense), net	(142.1)	(196.9)
Foreign exchange gains (losses)	(14.9)	3.7
Net gain related to favorable judgement	14.9
Liquidation of Foreign Subsidiaries
Intercompany Foreign Currency Balance [Line Items]
Foreign exchange gains (losses)	(0.5)	3.5
Foreign exchange gains (losses)	(0.5)	3.5
Pension Plans
Intercompany Foreign Currency Balance [Line Items]
Settlement losses to defined benefit pension plans	$ 132.3	$ 183.2