Restructuring Charges and Other Costs Associated with Acquisitions and Cost-Reduction/Productivity Initiatives - Asset Impairment Charges (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment charge, included in restructuring charges	$ 220	[1]
Long-lived assets held-for-sale	96	[1],[2]
Fair Value, Inputs, Level 2 [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Long-lived assets held-for-sale	96	[1],[2]
Fair Value, Inputs, Level 1 [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Long-lived assets held-for-sale	0	[1],[2]
Fair Value, Inputs, Level 3 [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Long-lived assets held-for-sale	$ 0	[1],[2]

[1] Reflects property, plant and equipment and other long-lived assets written down to their fair value of $96 million, less costs to sell of $2 million (a net of $94 million), in the first nine months of 2012. The impairment charges of $220 million are included in Restructuring charges and certain acquisition-related costs. Fair value is determined primarily using a market approach, with various inputs, such as recent sales transactions.

[2] The fair value amount is presented as of the date of impairment, as these assets are not measured at fair value on a recurring basis. See also Note 1C. Basis of Presentation and Significant Accounting Policies: Fair Value.