v3.25.4
Segments of Business and Geographic Areas - Schedule of Segment Reporting By Geographic Area (Details)
$ in Millions
 12 Months Ended
Dec. 28, 2025
USD ($)
segment
Dec. 29, 2024
USD ($)
Dec. 31, 2023
USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]      
Sales to Customers $ 94,193 $ 88,821 $ 85,159
Assets $ 199,210 180,104  
Number of segments | segment 2    
Equity securities, FV-NI, gain (loss)   (400) (400)
Restructuring $ 228 234 489
Gain (loss) related to litigation settlement     100
Research and development in process 81 211 313
Property, Plant and Equipment      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Long-Lived Assets 23,169 20,518  
Other Intangible Assets      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Long-Lived Assets $ 99,175 81,818  
Baby Powder | Talc      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Loss contingency, loss in period   $ 5,100 $ 7,000
Wholesaler 1 | Sales Revenue, Net | Wholesaler Concentration Risk      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Concentration risk (as a percent) 21.80% 20.50% 18.20%
Wholesaler 2 | Sales Revenue, Net | Wholesaler Concentration Risk      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Concentration risk (as a percent) 15.50% 15.60% 15.10%
Wholesaler 3 | Sales Revenue, Net | Wholesaler Concentration Risk      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Concentration risk (as a percent) 11.10% 12.30% 14.20%
Innovative Medicine      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Sales to Customers $ 60,401 $ 56,964 $ 54,759
Restructuring   102  
Realized gain (loss)   100 (400)
Gain (loss) related to litigation settlement     100
Gain (loss) on divestiture     (200)
Innovative Medicine | Momenta      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Impairment of intangible assets, excluding goodwill   $ 200 $ 200
Impairment, Intangible Asset, Statement of Income or Comprehensive Income [Extensible Enumeration]   Other (income) expense, net Other (income) expense, net
MedTech      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Sales to Customers 33,792 $ 31,857 $ 30,400
Gain (loss) on divestiture   200  
Regulation charge   200 300
Litigation expense 900 300  
United States      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Sales to Customers 53,752 50,302 46,444
United States | Innovative Medicine      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Sales to Customers 36,344 33,970 31,169
United States | MedTech      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Sales to Customers 17,408 16,332 15,275
Operating Segments      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Sales to Customers 94,193 88,821 85,159
Long-Lived Assets 121,127 101,119  
Restructuring 512 269 798
Operating Segments | Innovative Medicine      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Sales to Customers 60,401 56,964 54,759
Assets 78,057 57,070  
Supplies expense   100 700
Restructuring 0 102 479
Operating Segments | MedTech      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Sales to Customers 33,792 31,857 30,400
Assets 86,482 84,322  
Restructuring 500 167 319
Operating Segments | United States      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Sales to Customers 53,752 50,302 46,444
Long-Lived Assets 89,392 70,670  
Operating Segments | Europe      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Sales to Customers 21,535 20,212 20,410
Long-Lived Assets 27,987 27,267  
Operating Segments | Western Hemisphere excluding U.S.       
Revenues from External Customers and Long-Lived Assets [Line Items]      
Sales to Customers 4,875 4,714 4,549
Long-Lived Assets 2,204 1,728  
Operating Segments | Asia-Pacific, Africa      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Sales to Customers 14,031 13,593 $ 13,756
Long-Lived Assets 1,544 1,454  
Segment Reporting, Reconciling Item, Corporate Nonsegment      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Other non long-lived assets 76,866 77,768  
Segment Reporting, Reconciling Item, Corporate Nonsegment | General Corporate      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Long-Lived Assets 1,217 1,217  
Assets $ 34,671 $ 38,712