Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Doubtful accounts and allowances (in Dollars)	$ 32	$ 28
Accumulated depreciation (in Dollars)	$ 8,141	$ 7,865
Convertible preferred stock, par value (in Dollars per share)	$ 100
Convertible preferred stock, shares authorized	3,100
Convertible preferred stock, shares issued	2,300
Common stock par value (in Dollars per share)	$ 0.50	$ 0.50
Common stock, shares authorized	3,800,000,000	3,800,000,000
Common stock, shares issued	1,667,000,000	1,661,000,000
Treasury stock, at cost, shares held	361,000,000	262,000,000