Pension, Savings, And Other Employee Benefits (Schedule Of Components Of Net Periodic Benefit Cost) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 17	$ 62	$ 34	$ 124
Interest cost	8,660	8,089	17,320	16,174
Expected return on plan assets	(10,018)	(8,727)	(20,036)	(17,454)
Amortization of unrecognized, Prior service cost/(credit)	87	88	174	176
Amortization of unrecognized, Actuarial (gain)/loss	1,635	2,389	3,270	4,789
Net periodic benefit cost	381	1,901	762	3,809
ASC 715 settlement expense	0	370	0	370
Total periodic benefit costs	381	2,271	762	4,179
Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	55	134	110	268
Interest cost	458	548	916	1,096
Expected return on plan assets	(255)	(197)	(510)	(394)
Amortization of unrecognized, Prior service cost/(credit)	(291)	8	(582)	16
Amortization of unrecognized, Actuarial (gain)/loss	(252)	17	(378)	34
Net periodic benefit cost	(285)	510	(444)	1,020
ASC 715 settlement expense	0	0	0	0
Total periodic benefit costs	$ (285)	$ 510	$ (444)	$ 1,020