Pension and Postretirement Benefits (Schedule Of Amounts Recognized In Consolidated Balance Sheets) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Accrued pension and postretirement benefits	$ (231.9)	$ (329.7)
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Other assets	132.1	62.6
Current liabilities	(1.5)	(1.5)
Accrued pension and postretirement benefits	(201.3)	(296.8)
Funded status	(70.7)	(235.7)
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Other assets	0.0	0.0
Current liabilities	(2.5)	(2.6)
Accrued pension and postretirement benefits	(25.6)	(27.4)
Funded status	$ (28.1)	$ (30.0)