Accumulated Other Comprehensive Loss - Amounts Reclassified Out of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other (expense), net	$ (196.9)	$ (21.0)
Total before tax	(154.6)	(52.9)
Income tax	(19.9)	(4.1)
Reclassification out of Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total before tax	199.9	39.8
Income tax	(0.4)	(1.7)
Total reclassifications for the period	199.5	38.1
Reclassification out of Accumulated Other Comprehensive Loss | Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other (expense), net	(3.5)	1.1
Reclassification out of Accumulated Other Comprehensive Loss | Amortization of prior service benefit
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other (expense), net	(1.3)	(1.7)
Reclassification out of Accumulated Other Comprehensive Loss | Amortization of actuarial losses
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other (expense), net	21.5	40.4
Reclassification out of Accumulated Other Comprehensive Loss | Settlement losses
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other (expense), net	$ 183.2	$ 0.0