Liabilities, Commitments And Contingencies (Schedule Of Estimated Potential Funding Dates For Financing Commitments) (Details) (Financing Commitment [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financing Commitment [Member]
Other Commitments, Fiscal Year Maturity [Line Items]
2014	$ 2,309
2015	2,914
2016	3,257
2017	3,026
2018	1,930
Thereafter	4,551
Total	$ 17,987	$ 18,083