Pension, Savings, And Other Employee Benefits (Schedule Of Components Of Net Periodic Benefit Cost) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ (77)	$ 2,453	$ 47	$ 11,156
Interest cost	8,097	8,191	24,271	24,780
Expected return on plan assets	(8,756)	(9,967)	(26,210)	(29,860)
Amortization of unrecognized, Transition obligation	0	0	0	0
Amortization of unrecognized, Prior service cost/(credit)	89	100	265	299
Amortization of unrecognized, Actuarial (gain)/loss	2,585	9,351	7,374	26,999
Net periodic benefit cost	1,938	10,128	5,747	33,374
ASC 715 settlement expense	0	1,231	370	1,231
Total periodic benefit costs	1,938	11,359	6,117	34,605
Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	114	102	382	350
Interest cost	505	612	1,601	1,724
Expected return on plan assets	(199)	(225)	(593)	(686)
Amortization of unrecognized, Transition obligation	0	184	0	552
Amortization of unrecognized, Prior service cost/(credit)	(25)	(3)	(9)	(7)
Amortization of unrecognized, Actuarial (gain)/loss	(106)	(60)	(72)	(366)
Net periodic benefit cost	289	610	1,309	1,567
ASC 715 settlement expense	0	0	0	0
Total periodic benefit costs	$ 289	$ 610	$ 1,309	$ 1,567