Employee Benefit Plans And Other Postretirement Benefits (Schedule Of Net Periodic Benefit Cost Recognized In Accumulated And Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Prior service cost (credit)	$ (9,385)
Net actuarial loss	539,188
Amounts included in other comprehensive income, net of tax	529,803
Pension and SERPA Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Prior service cost (credit)	1,685
Net actuarial loss	488,080
Amounts included in other comprehensive income, net of tax	489,765
Postretirement Healthcare Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Prior service cost (credit)	(11,070)
Net actuarial loss	51,108
Amounts included in other comprehensive income, net of tax	$ 40,038