Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Income Taxes (Textual) [Abstract]
Income before income tax including related corporate and other charges for U.S. operations	$ 10,222	$ 6,528	$ 1,310
Income before Income Tax for International Operations	37,412	25,527	17,218
Income Tax Credits and Adjustments	191	162	204
Effective Tax Rates	43.30%	40.30%	43.00%
Approximate increase in deferred tax liabilities	3,600
Approximate Increase in Deferred Tax Assets	2,500
Loss Carry forwards	2,160
Carry forward amount of foreign tax credit with expiration dates	8,476	6,669
Undistributed earnings of international consolidated subsidiaries and affiliates for which no deferred income tax provision has been made for future remittances	24,376
Recognition of uncertain tax position under accounting standards for uncertainty in income taxes.	greater than 50 percent
Percentage of impact of unrecognized tax benefits on effective tax rate if subsequently recognized.	80.00%
Unrecognized Tax Benefits	3,481	3,507	3,195	2,696
Income tax accruals for anticipated interest and penalty obligations	118	225
Income tax benefit expense associated with interest and penalties	$ (64)	$ 40	$ (20)
Tax Credit Carry forward Expiration Dates	2012-2021
Tax Loss Carry Forwards	2012-2036