Pension And Postretirement Benefits (Schedule Of Amounts Recognized In Consolidated Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Accrued pension and postretirement benefits	$ (278,253)	$ (151,133)
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Other assets	53,088	78,688
Current liabilities	(1,041)	(1,024)
Accrued pension and postretirement benefits	(270,626)	(141,321)
Amounts recognized in the Consolidated Balance Sheets	(218,579)	(63,657)
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	(965)	(1,155)
Accrued pension and postretirement benefits	(7,627)	(9,812)
Amounts recognized in the Consolidated Balance Sheets	$ (8,592)	$ (10,967)