Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Doubtful accounts and allowances (in Dollars)	$ 46	$ 47
Inventory reserves (in Dollars)	100us-gaap_InventoryValuationReserves	127us-gaap_InventoryValuationReserves
Accumulated depreciation (in Dollars)	$ 8,591	$ 8,332
Convertible preferred stock, par value (in Dollars per share)	$ 100	$ 100
Convertible preferred stock, shares authorized	3,100us-gaap_PreferredStockSharesAuthorized	3,100us-gaap_PreferredStockSharesAuthorized
Convertible preferred stock, shares issued	2,300us-gaap_PreferredStockSharesIssued	2,300us-gaap_PreferredStockSharesIssued
Common stock par value (in Dollars per share)	$ 0.50	$ 0.50
Common stock, shares authorized	3,800,000,000us-gaap_CommonStockSharesAuthorized	3,800,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	1,679,000,000us-gaap_CommonStockSharesIssued	1,672,000,000us-gaap_CommonStockSharesIssued
Treasury stock, at cost, shares held	420,000,000us-gaap_TreasuryStockShares	398,000,000us-gaap_TreasuryStockShares

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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