Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosure [Abstract]
Income before income tax including related corporate and other charges for U.S. operations	$ 4,672	$ 8,456	$ 10,222
Income before income tax for international operations	31,233	37,876	37,412
Income tax credits and adjustments	175	165	191
Effective tax rate	39.90%	43.20%	43.30%
Approximate increase in deferred tax liabilities	1,600
Loss carry forward	3,064
Tax credit carryforward	1,301
Carry forward amount of foreign tax credit with expiration dates	11,572	10,817
Undistributed earnings of international consolidated subsidiaries and affiliates for which no deferred income tax provision has been made for future remittances	31,300
Percentage of impact of unrecognized tax benefits on effective tax rate if subsequently recognized	71.00%
Unrecognized tax benefits	3,848	3,071	3,481	3,507
Income tax accruals for anticipated interest and penalty obligations	215	293
Income tax benefit expense associated with interest and penalties	$ (42)	$ 145	$ (64)