Accumulated Other Comprehensive Loss (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]
Non-operating expenses, net	$ 1.6	$ 0.4
Tax benefit	35.5	36.8
Total reclassifications for the period, net of tax	(101.1)	(105.5)
Reclassification out of AOCI [Member] | Actuarial Losses Recognized [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-operating expenses, net	2.4	1.5
Tax benefit	(0.6)	(0.4)
Total reclassifications for the period, net of tax	$ 1.8	$ 1.1