Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions, None in scaling factor is -9223372036854775296	Jun. 30, 2015	Dec. 31, 2014
Trade receivables, allowances	$ 59	$ 66
Other receivables, allowances	$ 93	$ 91
Common Stock, no par value
Common stock, shares authorized	5,000,000,000	5,000,000,000
Common Stock, shares issued	1,996,537,778	1,996,537,778
Treasury stock, shares	385,085,976	332,896,779

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.4)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 4

-Article 5

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A valuation allowance for doubtful other receivables due to an entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible and not separately disclosed.

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No definition available.

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Face amount per share of no-par value 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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- Definition

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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