Liabilities, Commitments And Contingencies (Schedule Of Accrued Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Commitments and Contingencies Disclosure [Abstract]
Accrued compensation and employee benefit costs	$ 6,158	$ 5,769
Environmental	649	710	758
Product warranties	1,570	1,572	1,046
Forward loss recognition	360	387
Dividends payable	542	367
Other	4,852	4,190
Total	$ 14,131	$ 12,995