Pension Plans And Other Postretirement Benefit Plans (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Other Operating Activities, Cash Flow Statement	$ 12,982,000	$ 5,256,000	$ (4,988,000)
Contributions to defined benefit pension plan	(44,263,000)	(44,000,000)	(26,000,000)
Amortization of transition obligation	34,500,000
Amortization of transition obligation period	20 years
Percentage point increases in accumulated postretirement benefit obligation	3,800,000
Percentage point increase in service and interest cost	800,000
Percentage point decrease in accumulated postretirement benefit obligation	3,100,000
Percentage point decrease in service and interest cost	600,000
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions to defined benefit pension plan	44,263,000	44,000,000
Expected contributions to pension plan	(32,000,000)
Amortization of transition obligation	0	0	0
Other Post-Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions to defined benefit pension plan	0	0
Expected contributions to pension plan	(7,000,000)
Amortization of transition obligation	$ 0	$ 505,000	$ 505,000
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation of equity securities	47.00%	51.00%
Equity Securities [Member] | Other Post-Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation of equity securities	60.00%	62.00%
Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation of equity securities	31.00%	31.00%
Debt Securities [Member] | Other Post-Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation of equity securities	40.00%	38.00%