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Acquisitions, Discontinued Operations, Equity-Method Investment and Research and Development Arrangement - Equity Method Investment Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 02, 2023
Jul. 03, 2022
Jul. 02, 2023
Jul. 03, 2022
Dec. 31, 2022
Jul. 18, 2022
Schedule of Equity Method Investments [Line Items]            
Equity-method investments $ 11,422   $ 11,422   $ 11,033  
Haleon [Member]            
Schedule of Equity Method Investments [Line Items]            
Equity method investment, ownership percentage           32.00%
Equity-method investments 11,200   11,200   $ 10,800  
Equity-method investment, quoted market value 12,100   12,100      
Increase due to foreign currency translation     271      
Dividend received, distribution     88      
Equity method investment earnings $ 151   $ 219      
Consumer Healthcare JV [Member]            
Schedule of Equity Method Investments [Line Items]            
Equity method investment earnings   $ 150   $ 335