Segment Information (Reconciliation to Consolidated Income Statements) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment Information
Total segment PTOI	$ 1,777	$ 1,961	$ 4,018	$ 4,384
Non operating pension and other post retirement employee benefit costs	(126)	(174)	(273)	(350)
Net exchange gains (losses), including affiliates	35	50	46	(31)
Corporate expenses	(206)	(224)	(420)	(475)
Interest expense	(115)	(117)	(232)	(231)
Income from continuing operations before income taxes	$ 1,365	$ 1,496	$ 3,139	$ 3,297

NonOperatingPensionandOtherPostRetirementEmployeeBenefitCosts

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- Definition

Segment Reporting Reconciling Item Corporate Expenses

+ References

No definition available.

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- Definition

The aggregate foreign currency transaction gain (loss) (both realized and unrealized) included in determining net income for the reporting period. Excludes foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements. For certain enterprises, primarily banks, that are dealers in foreign exchange, foreign currency transaction gains (losses) may be disclosed as dealer gains (losses).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 20

-Section 45

-Paragraph 1

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-Name Accounting Standards Codification

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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

-Publisher FASB

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-SubTopic 10

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-Subparagraph (SX 210.4-08.(h)(1)(i))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph h

-Subparagraph 1(i)

-Article 4

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- Definition

Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

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-Subparagraph (SX 210.5-03.8)

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

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