Operating Income by Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]
Unrealized gains / (losses) on hedging activities		$ 1	$ (36)	$ 38
Certain U.S. pension plan costs		(92)	(76)	(56)
General corporate expenses		(714)	(437)	(511)
Amortization of intangibles		(217)	(225)	(210)
Gains / (losses) on divestitures	107	107
Acquisition-related costs		(1)		(218)
Operating income		3,637	3,498	2,496
Interest and other expense, net		(1,863)	(1,618)	(1,770)
Earnings from continuing operations before income taxes		1,774	1,880	726
Developing Markets
Segment Reporting Information [Line Items]
Operating income		2,067	2,003	1,533
Europe
Segment Reporting Information [Line Items]
Acquisition-related costs		(44)
Operating income		1,613	1,406	1,115
North America
Segment Reporting Information [Line Items]
Operating income		$ 873	$ 863	$ 805

Segment Reporting Certain U.S. Pension Plan Costs

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- Definition

Segment reporting, general corporate expenses

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- Definition

Gains (Losses) on the change in unrealized hedging positions.

+ References

No definition available.

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(2)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

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-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 25

-Paragraph 23

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- Definition

The gain (loss) resulting from the sale of a disposal group that is not a discontinued operation. It is included in income from continuing operations before income taxes in the income statement.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 37, 45

-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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-Name Accounting Standards Codification

-Topic 205

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-Section 50

-Paragraph 1

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-Name Statement of Financial Accounting Standard (FAS)

-Number 144

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-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

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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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-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-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

Interest and debt related expenses associated with nonoperating financing activities of the entity.

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-Name Statement of Financial Accounting Standard (FAS)

-Number 34

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-Topic 835

-SubTopic 20

-Section 50

-Paragraph 1

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- Definition

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

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No definition available.

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