Segment Information (Reconciliation to Consolidated Income Statements) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Segment Information
Total segment PTOI	$ 2,327		$ 2,125
Net exchange gains (losses), including affiliates	(80)	[1]	(143)	[1]
Corporate expenses and net interest	(306)		(280)
Income before income taxes	$ 1,941		$ 1,702

[1] The company routinely uses foreign currency exchange contracts to offset its net exposures, by currency, related to the foreign currency-denominated monetary assets and liabilities. The objective of this program is to maintain an approximately balanced position in foreign currencies in order to minimize, on an after-tax basis, the effects of exchange rate changes on net monetary asset positions. The net pre-tax exchange gains and losses are recorded in other income, net and the related tax impact is recorded in provision for income taxes on the interim Consolidated Income Statements.