Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Current Assets
Cash and cash equivalents (variable interest entities restricted)	$ 158	$ 190
Accounts and notes receivable:
Trade (allowance for doubtful receivables)	94	110
Investments
Other investments (investments carried at fair value)	1,866	2,009
Property
Net property (variable interest entities restricted)	1,717	2,726
Other Assets
Other intangible assets (accumulated amortization)	3,770	3,737
Liabilities and Equity
Long-Term Debt (variable interest entities non-recourse)	$ 487	$ 1,216
Stockholders' Equity
Preferred stock, series A par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock, series A liquidation preference (in dollars per share)	$ 1,000	$ 1,000
Preferred stock issued, shares	4,000,000	4,000,000
Common Stock, Shares Authorized	1,500,000,000	1,500,000,000
Common Stock, Par or Stated Value Per Share	$ 2.50	$ 2.50
Common Stock, Shares, Issued	1,242,794,836	1,242,763,276
Treasury Stock, Shares	125,853,161	85,168,571