Restructuring Charges and Other Costs Associated with Acquisitions and Cost-Reduction/Productivity Initiatives - Restructuring Charges (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified			12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 Employee termination costs [Member]	Dec. 31, 2011 Asset impairments [Member]	Dec. 31, 2011 Other restructuring charges [Member]	Dec. 31, 2011 Restructuring Accrual [Member]
Restructuring Cost and Reserve [Line Items]
Other current liabilities	$ 15,237	$ 14,256				$ 1,600
Other noncurrent liabilities	$ 6,199	$ 5,601				$ 928
Restructuring and Related Activities, Initiation Date			Jan. 01, 2005	Jan. 01, 2005	Jan. 01, 2005
Restructuring and Related Activities, Current Date			Dec. 31, 2011	Dec. 31, 2011	Dec. 31, 2011

This element represents (i) the current portion of deferred tax liabilities, which result from applying the applicable tax rate to net taxable temporary differences pertaining to each jurisdiction to which the entity is obligated to pay income tax. A current taxable temporary difference is a difference between the tax basis and the carrying amount of a current asset or liability in the financial statements prepared in accordance with generally accepted accounting principles. In a classified statement of financial position, an enterprise shall separate deferred tax liabilities and assets into a current amount and a noncurrent amount. Deferred tax liabilities and assets shall be classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, shall be classified according to the expected reversal date of the temporary difference; and (ii) the aggregate carrying amount, as of the balance sheet date, of current obligations not separately disclosed in the balance sheet due to materiality considerations. Current liabilities are expected to be paid within one year (or the normal operating cycle, if longer).

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- Definition

Date when the restructuring activities were initiated or are expected to be initiated.

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