Restructuring Charges and Other Costs Associated with Acquisitions and Cost-Reduction/Productivity Initiatives - Restructuring Accruals (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		99 Months Ended				3 Months Ended
	Mar. 31, 2013		Mar. 31, 2013		Dec. 31, 2012 Other Current Liabilities [Member]	Dec. 31, 2012 Other Long-Term Liabilties [Member]	Mar. 31, 2013 Employee Termination Costs [Member]		Mar. 31, 2013 Asset Impairment Charges [Member]		Mar. 31, 2013 Exit Costs [Member]
Restructuring Reserve [Roll Forward]
Balance, December 31, 2012	$ 1,950	[1]			$ 1,200	$ 731	$ 1,793	[1]	$ 0	[1]	$ 157	[1]
Provision	99						(20)		105		14
Utilization and other	(478)	[2]					(340)	[2]	(105)	[2]	(33)	[2]
Balance, March 31, 2013	1,571	[3]	1,571	[3]	1,200	731	1,433	[3]	0	[3]	138	[3]
Restructuring charges			$ 15,700

[1] Included in Other current liabilities ($1.2 billion) and Other noncurrent liabilities ($731 million).

[2] Includes adjustments for foreign currency translation.

[3] Included in Other current liabilities ($919 million) and Other noncurrent liabilities ($652 million).