Liabilities, Commitments And Contingencies (Schedule Of Accrued Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Accrued compensation and employee benefit costs	$ 5,720	$ 5,624
Environmental	562	566	$ 601
Product warranties	1,414	1,485	$ 1,504
Forward loss recognition	1,385	757
Dividends payable	866	721
Taxes Payable	89	262
Other	4,655	4,599
Total	$ 14,691	$ 14,014