Taxes (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
U.S. Federal
Current	$ 1,893	$ 1,501	$ 128
Deferred	877	162	(147)
State and local
Current	596	376	216
Deferred	41	20	14
Total United States	3,407	2,059	211
International
Current	16,548	10,483	7,154
Deferred	671	377	600
Total International	17,219	10,860	7,754
Total taxes on income	$ 20,626	$ 12,919	$ 7,965
Reconciliation between the U.S. statutory federal income tax rate and the company's effective income tax rate
U.S. statutory federal income tax rate	35.00%	35.00%	35.00%
Effect of income taxes from international operations at rates different from the U.S. statutory rate	7.50%	5.20%	10.40%
State and local taxes on income, net of U.S. federal income tax benefit	0.90%	0.80%	0.90%
Prior-year tax adjustments	(0.10%)	(0.60%)	(0.30%)
Tax credits	(0.40%)	(0.50%)	(1.10%)
Effects of changes in tax rates	0.50%		0.10%
Other	(0.10%)	0.40%	(2.00%)
Effective tax rate	43.30%	40.30%	43.00%