Segments of Business and Geographic Areas - Operating Profit by Segment of Business (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2022	Jul. 04, 2021	Jul. 03, 2022	Jul. 04, 2021
Segment Reporting Information [Line Items]
Worldwide income before tax	$ 5,840	$ 6,662	$ 11,702	$ 14,091
Percentage Change in Operating Income Loss	(12.30%)		(17.00%)
Amount prepaid and due to manufacturers			$ 900
Restructuring charges	$ 85	56	155	109
PHARMACEUTICAL(1) | bermekimab
Segment Reporting Information [Line Items]
In-process research and development expense			600
MedTech
Segment Reporting Information [Line Items]
Amortization			500	500
Restructuring charges			200	100
Operating Segments
Segment Reporting Information [Line Items]
Total Segment Operating Income	$ 6,345	6,906	$ 12,432	14,546
Percentage Change in Operating Income Loss	(8.10%)		(14.50%)
Operating Segments | CONSUMER HEALTH (1)
Segment Reporting Information [Line Items]
Total Segment Operating Income	$ 784	866	$ 1,470	1,708
Business Exit Costs	$ 268	0	$ 370	0
Percentage Change in Operating Income Loss	(9.50%)		(13.90%)
Amortization	$ 100		$ 200	200
Litigation expense	100	100	100	100
Operating Segments | PHARMACEUTICAL(1)
Segment Reporting Information [Line Items]
Total Segment Operating Income	$ 4,420	4,294	$ 8,344	9,463
Percentage Change in Operating Income Loss	2.90%		(11.80%)
Amortization	$ 700	800	$ 1,500	1,700
Gain (loss) on disposition of assets			600
Unrealized gain (loss) on securities	(100)	200	(500)	100
Supply network costs	200		200
Operating Segments | MedTech
Segment Reporting Information [Line Items]
Total Segment Operating Income	$ 1,141	1,746	$ 2,618	3,375
Percentage Change in Operating Income Loss	(34.70%)		(22.40%)
Amortization	$ 300	300
Litigation expense	300		$ 300
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total Segment Operating Income	$ 237	$ 244	$ 360	$ 455