Employee Benefit Plans And Other Postretirement Benefits (Narrative) (Details) (USD $)	12 Months Ended			1 Months Ended	12 Months Ended								12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jan. 31, 2013 Pension And SERPA Benefits [Member]	Dec. 31, 2012 Pension And SERPA Benefits [Member]	Dec. 31, 2011 Pension And SERPA Benefits [Member]	Dec. 31, 2010 Pension And SERPA Benefits [Member]	Dec. 31, 2012 Postretirement Healthcare Benefits [Member]	Dec. 31, 2011 Postretirement Healthcare Benefits [Member]	Dec. 31, 2010 Postretirement Healthcare Benefits [Member]	Dec. 31, 2012 SERPA Benefits [Member]	Dec. 31, 2011 SERPA Benefits [Member]	Dec. 31, 2012 401 (K) Plan [Member]	Dec. 31, 2011 401 (K) Plan [Member]	Dec. 31, 2010 401 (K) Plan [Member]	Dec. 31, 2012 Equity Securities [Member]	Dec. 31, 2012 Fixed Income Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Contributions by Employer				$ 175,000,000	$ 216,741,000	$ 205,383,000		$ 27,675,000	$ 14,111,000
Postretirement benefits eligibility, years of service requirement		10
Accumulated benefit obligation					1,730,000,000	1,460,000,000					20,100,000	27,400,000
Projected benefit obligations					1,871,575,000	1,570,930,000	1,390,374,000	403,227,000	380,625,000	378,341,000	37,800,000	41,000,000
Defined Benefit Plan, Target Plan Asset Allocation																68.00%	32.00%
Investment in company common stock - shares		1,273,592	1,273,592
Investment in company common stock - value		62,200,000	49,500,000
Expected return on plan assets	7.75%				7.80%	8.00%	8.25%	8.00%	8.00%	8.25%
Company contributions													15,300,000	12,500,000	12,600,000
Further contributions by company		$ 0