Shareholders' Equity (Reclassification out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ (8.5)	$ (9.0)
Tax impact	(21.6)	(20.3)
Total (income), net of tax	(69.1)	(59.9)
Reclassification From Accumulated Other Comprehensive Loss [Member] | Derivative (Loss) Gain [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Tax impact	(0.3)	0.3
Total (income), net of tax	(0.3)	(1.7)
Reclassification From Accumulated Other Comprehensive Loss [Member] | Derivative (Loss) Gain [Member] | Interest Rate Swap Contracts, Before Tax [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Interest expense	(0.4)	(2.1)
Reclassification From Accumulated Other Comprehensive Loss [Member] | Amortization of prior service credit [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Other non-operating (income) expense, net	0.0	(0.1)
Reclassification From Accumulated Other Comprehensive Loss [Member] | Amortization of net actuarial loss (gain) [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Other non-operating (income) expense, net	0.9	(0.8)
Reclassification From Accumulated Other Comprehensive Loss [Member] | Pension And Postretirement Adjustments [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Tax impact	0.1	0.4
Total loss (income), before tax	0.9	(0.9)
Total loss (income), net of tax	0.6	(0.6)
Total reclassifications for the period	$ 0.3	$ (2.3)