Pension And Other Postretirement Benefits (Schedule Of Amounts Recognized In Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Pension Benefits [Member]
Liability, Defined Benefit Plan [Abstract]
Current accrued benefit cost	$ 3.0	$ 1.3
Non-current accrued benefit cost	129.0	107.3
Net amount recognized	132.0	108.6
Postretirement Benefits [Member]
Liability, Defined Benefit Plan [Abstract]
Current accrued benefit cost	6.9	6.5
Non-current accrued benefit cost	54.1	55.9
Net amount recognized	$ 61.0	$ 62.4