Restructuring Charges and Other Costs Associated with Acquisitions and Cost-Reduction/Productivity Initiatives - Schedule of Acquisitions and Cost-Reduction/Productivity Initiatives (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Oct. 03, 2021	Sep. 27, 2020	Oct. 03, 2021	Sep. 27, 2020
Restructuring charges/(credits):
Employee terminations		$ 630	$ (15)	$ 649	$ 340
Asset impairments		10	20	9	43
Exit costs/(credits)		3	(11)	0	(10)
Restructuring charges/(credits)	[1]	643	(5)	657	374
Transaction costs	[2]	0	0	0	14
Integration costs and other	[3]	3	7	11	29
Restructuring charges and certain acquisition-related costs		646	2	668	417
Additional depreciation––asset restructuring	[4]	31	4	87	10
Implementation costs	[5]	151	47	316	142
Total costs associated with acquisitions and cost-reduction/productivity initiatives		764	52	1,020	571
Other (income)/deductions––net [Member]
Restructuring charges/(credits):
Net periodic benefit costs/(credits) recorded in Other (income)/deductions––net	[6]	(63)	0	(51)	2
Cost of sales [Member]
Restructuring charges/(credits):
Additional depreciation––asset restructuring	[4]	23	4	64	14
Implementation costs	[5]	8	9	29	27
Selling, informational and administrative expenses [Member]
Restructuring charges/(credits):
Additional depreciation––asset restructuring	[4]	8	0	23	0
Implementation costs	[5]	142	36	287	114
Research and development expenses [Member]
Restructuring charges/(credits):
Additional depreciation––asset restructuring	[4]	0	0	0	(3)
Implementation costs	[5]	$ 0	$ 1	$ 1	$ 2

[1] Primarily represents cost reduction initiatives.

[2] Represents external costs for banking, legal, accounting and other similar services.

[3] Represents external, incremental costs directly related to integrating acquired businesses, such as expenditures for consulting and the integration of systems and processes, and certain other qualifying costs.

[4] Represents the impact of changes in the estimated useful lives of assets involved in restructuring actions.

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

[6] Amounts for the three and nine months ended September 27, 2020 include the impact of a change in accounting principle. See Note 1C.