Pension And Postretirement Benefits (Schedule Of Amounts Recognized In Consolidated Balance Sheets) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Accrued pension and postretirement benefits	$ (249.1)	$ (235.4)
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Other assets	46.0	56.3
Current liabilities	(1.2)	(1.1)
Accrued pension and postretirement benefits	(240.3)	(226.7)
Amounts recognized in the Consolidated Balance Sheets	$ (195.5)	$ (171.5)