Pension And Postretirement Benefits (Schedule Of Amounts Recognized In Consolidated Balance Sheets) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Accrued pension and postretirement benefits	$ (244.0)	$ (240.5)
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Other assets	60.7	66.1
Current liabilities	(1.3)	(1.3)
Accrued pension and postretirement benefits	(213.2)	(231.4)
Amounts recognized in the Consolidated Balance Sheets	(153.8)	(166.6)
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Other assets	0.0	0.0
Current liabilities	(2.6)	(1.0)
Accrued pension and postretirement benefits	(26.4)	(6.9)
Amounts recognized in the Consolidated Balance Sheets	$ (29.0)	$ (7.9)