Restructuring Charges and Other Costs Associated with Acquisitions and Cost-Reduction/Productivity Initiatives (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Apr. 01, 2012
Restructuring Cost and Reserve [Line Items]
Integration costs	$ 39	[1]	$ 100	[1]
Restructuring charges:
Employee termination costs	(20)	[2]	267	[2]
Asset impairments	105	[2]	218	[2]
Exit costs	14	[2]	12	[2]
Restructuring charges and certain acquisition-related costs	138	[2]	597	[2]
Additional depreciation-asset restructuring recorded in our condensed consolidated statements of income as follows:
Additional depreciation - asset restructuring	135	[3]	340	[3]
Implementation costs recorded in our condensed consolidated statements of income as follows:
Implementation costs	39	[4]	63	[4]
Total costs associated with acquisitions and cost-reduction/ productivity initiatives	312		1,000
Cost of Sales [Member]
Additional depreciation-asset restructuring recorded in our condensed consolidated statements of income as follows:
Additional depreciation - asset restructuring	33	[3]	79	[3]
Implementation costs recorded in our condensed consolidated statements of income as follows:
Implementation costs	6	[4]		[4]
Selling Informational And Administrative Expenses [Member]
Additional depreciation-asset restructuring recorded in our condensed consolidated statements of income as follows:
Additional depreciation - asset restructuring	12	[3]	2	[3]
Implementation costs recorded in our condensed consolidated statements of income as follows:
Implementation costs	30	[4]	15	[4]
Research and Development Expenses [Member]
Additional depreciation-asset restructuring recorded in our condensed consolidated statements of income as follows:
Additional depreciation - asset restructuring	90	[3]	259	[3]
Implementation costs recorded in our condensed consolidated statements of income as follows:
Implementation costs	$ 3	[4]	$ 48	[4]

[1] Integration costs represent external, incremental costs directly related to integrating acquired businesses, and primarily include expenditures for consulting and the integration of systems and processes.

[2] From the beginning of our cost-reduction/productivity initiatives in 2005 through March 31, 2013, Employee termination costs represent the expected reduction of the workforce by approximately 62,000 employees, mainly in manufacturing and sales and research, of which approximately 54,000 employees have been terminated as of March 31, 2013. For the three months ended March 31, 2013, the credit to employee terminations reflects a change in estimate related to the number of employees to be terminated and the expected total cost of planned terminations.The restructuring charges for the three months ended March 31, 2013 are associated with the following:•Primary Care operating segment ($5 million income), Specialty Care and Oncology operating segment ($6 million), Established Products and Emerging Markets operating segment ($11 million), other operating segments ($2 million), research and development operations ($2 million), manufacturing operations ($4 million) and Corporate ($79 million).The restructuring charges for the three months ended April 1, 2012 are associated with the following:•Primary Care operating segment ($3 million), Specialty Care and Oncology operating segment ($3 million), Established Products and Emerging Markets operating segment ($3 million), other operating segments ($6 million), research and development operations ($12 million), manufacturing operations ($152 million) and Corporate ($318 million).

[3] Additional depreciation––asset restructuring represents the impact of changes in the estimated useful lives of assets involved in restructuring actions.

[4] Implementation costs represent external, incremental costs directly related to implementing our non-acquisition-related cost-reduction/productivity initiatives.