Pension and Postretirement Benefits (Schedule Of Amounts Recognized In Consolidated Balance Sheets) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Accrued pension and postretirement benefits	$ (153.2)	$ (231.9)
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Other assets	56.5	132.1
Current liabilities	(1.6)	(1.5)
Accrued pension and postretirement benefits	(131.0)	(201.3)
Funded status	(76.1)	(70.7)
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Other assets	0.0	0.0
Current liabilities	(2.2)	(2.5)
Accrued pension and postretirement benefits	(17.4)	(25.6)
Funded status	$ (19.6)	$ (28.1)