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Consolidated Condensed Balance Sheets (Parentheticals) (USD $) In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Allowance for Doubtful Accounts Receivable, Current	$ 156us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent	$ 154us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Property, Accumulated Depreciation	5,801us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	5,959us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Other Intangibles, Accumulated Amortization	$ 278us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization	$ 267us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Stockholders' Equity, Number of Shares, Par Value and Other Disclosures [Abstract]
Common stock, par value	$ 1us-gaap_CommonStockParOrStatedValuePerShare	$ 1us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized	250us-gaap_CommonStockSharesAuthorized	250us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	110us-gaap_CommonStockSharesIssued	110us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	78us-gaap_CommonStockSharesOutstanding	78us-gaap_CommonStockSharesOutstanding
Treasury Stock	32us-gaap_TreasuryStockShares	32us-gaap_TreasuryStockShares

X

- Definition

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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A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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