Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Doubtful accounts and allowances (in Dollars)	$ 48	$ 47
Inventory reserves (in Dollars)	146	127
Accumulated depreciation (in Dollars)	$ 9,188	$ 8,332
Convertible preferred stock, par value (in Dollars per share)	$ 100	$ 100
Convertible preferred stock, shares authorized	3,100	3,100
Convertible preferred stock, shares issued	2,300	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	1,681,000,000	1,672,000,000
Treasury stock, at cost, shares held	551,000,000	398,000,000