Nature of Operations (Reconciliation Of Total Consolidated Operating Income To Earnings Before Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Total consolidated operating income	$ 430.9	$ 374.3	$ 323.7
Interest expense	33.0	39.8	35.3
Other non-operating (income), net	(2.4)	(12.6)	(9.9)
Earnings before income taxes	$ 400.3	$ 347.1	$ 298.3