Segment Information (Reconciliation to Consolidated Income Statements) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Segment Information
Total segment PTOI	$ 1,898		$ 1,943		$ 4,225		$ 4,068
Net exchange gains (losses), including affiliates	28	[1]	4	[1]	(52)	[1]	(139)	[1]
Corporate expenses and net interest	(289)		(358)		(595)		(638)
Income before income taxes	$ 1,637		$ 1,589		$ 3,578		$ 3,291

[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.