Segments of Business and Geographic Areas - Operating Profit by Segment of Business (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 30, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Sales to customers (Note 9)	$ 21,893	$ 21,383
Cost of products sold	7,357	6,511
Gross Profit	14,536	14,872
Selling, marketing and administrative expenses	5,112	5,257
Research and development expense	3,225	3,542
Other (income) expense, net	7,321	(2,404)
Earnings before provision for taxes on income	13,631	3,714
Less: Expense not allocated to segments	(7,000)	2,775
Restructuring charges	17	164
Innovative Medicine
Segment Reporting Information [Line Items]
Sales to customers (Note 9)	13,873	13,562
Restructuring charges	100
MedTech
Segment Reporting Information [Line Items]
Sales to customers (Note 9)	8,020	7,821
Restructuring charges	100
Acquisition related costs	100	100
Consumer \| Talc
Segment Reporting Information [Line Items]
Litigation expense		2,700
Reversal of fee expense	7,000
Operating Segments
Segment Reporting Information [Line Items]
Earnings before provision for taxes on income	6,631	6,489
Restructuring charges	55	171
Operating Segments \| Innovative Medicine
Segment Reporting Information [Line Items]
Sales to customers (Note 9)	13,873	13,562
Cost of products sold	4,020	3,370
Selling, marketing and administrative expenses	2,261	2,438
Research and development expense	2,548	2,896
Other (income) expense, net	(166)	(111)
Earnings before provision for taxes on income	5,210	4,969
Amortization	600	700
Restructuring charges	0	144
Operating Segments \| MedTech
Segment Reporting Information [Line Items]
Sales to customers (Note 9)	8,020	7,821
Cost of products sold	3,326	3,120
Selling, marketing and administrative expenses	2,656	2,582
Research and development expense	677	646
Other (income) expense, net	(60)	(47)
Earnings before provision for taxes on income	1,421	1,520
Amortization	500	400
Restructuring charges	$ 55	$ 27

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