Consolidated Balance Sheets (Parentheticals) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current Assets
Cash and cash equivalents (variable interest entities restricted)	$ 170	$ 146
Accounts and notes receivable:
Trade (allowance for doubtful receivables)	131	121
Investments
Other investments (investments carried at fair value)	2,004	2,061
Property
Net property (variable interest entities restricted)	2,625	2,554
Other Assets
Other intangible assets (accumulated amortization)	3,168	2,785
Long-Term Debt
Long Term Debt (Variable interest entities nonrecourse)	$ 1,456	$ 1,406