Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($) shares in Millions, $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Doubtful accounts and allowances	$ 29	$ 30
Accumulated depreciation	$ 14,439	$ 14,553
Common stock, par value (in dollars per share)	$ 0.5	$ 0.5
Common stock, shares authorized (in shares)	3,800	3,800
Common stock, shares issued (in shares)	1,800	1,800
Treasury stock Shares (in shares)	981	980

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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Amount of allowance for credit loss on accounts receivable, classified as current.

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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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Number of previously issued common shares repurchased by the issuing entity and held in treasury.

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