Pension Plans And Other Postretirement Benefit Plans (Components Of Net Periodic Benefit Cost) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Transition obligation recognition	$ 34,500
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), after Tax	69,758	145,357
Service cost	19,045	15,551	12,936
Interest cost	23,896	24,349	24,134
Expected return on plan assets	(27,671)	(23,810)	(23,115)
Transition obligation recognition	0	0	0
Amortization of prior service cost	319	346	475
Net loss recognition	13,199	11,637	9,493
Net periodic benefit cost	28,788	28,073	23,923
Other Post-Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), after Tax	36,516	60,675
Service cost	4,144	2,804	1,805
Interest cost	5,216	5,056	4,126
Expected return on plan assets	(1,606)	(1,471)	(1,601)
Transition obligation recognition	0	505	505
Amortization of prior service cost	(149)	(149)	(149)
Net loss recognition	5,674	5,020	3,458
Net periodic benefit cost	$ 13,279	$ 11,765	$ 8,144