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Segments of Business and Geographic Areas - Operating Profit by Segment of Business (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 03, 2022	Apr. 04, 2021
Segment Reporting Information [Line Items]
Worldwide income before tax	$ 5,862	$ 7,429
Percentage Change in Operating Income Loss	(21.10%)
Amount prepaid and due to manufacturers	$ 900
Restructuring charges	70	53
PHARMACEUTICAL | bermekimab
Segment Reporting Information [Line Items]
In-process research and development expense	600
MedTech
Segment Reporting Information [Line Items]
Restructuring charges	100	100
Operating Segments
Segment Reporting Information [Line Items]
Total Segment Operating Income	$ 6,087	7,640
Percentage Change in Operating Income Loss	(20.30%)
Operating Segments | CONSUMER HEALTH
Segment Reporting Information [Line Items]
Total Segment Operating Income	$ 686	842
Business Exit Costs	$ 102	0
Percentage Change in Operating Income Loss	(18.50%)
Amortization	$ 100	100
Operating Segments | PHARMACEUTICAL
Segment Reporting Information [Line Items]
Total Segment Operating Income	$ 3,924	5,169
Percentage Change in Operating Income Loss	(24.10%)
Amortization	$ 800	900
Gain (loss) on disposition of assets	600
Unrealized gain (loss) on securities	400
Operating Segments | MedTech
Segment Reporting Information [Line Items]
Total Segment Operating Income	$ 1,477	1,629
Percentage Change in Operating Income Loss	(9.30%)
Amortization	$ 300	300
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total Segment Operating Income	$ 123	$ 211

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