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Restructuring - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jul. 04, 2021
Jun. 28, 2020
Jul. 04, 2021
Jun. 28, 2020
Restructuring Cost and Reserve [Line Items]        
Restructuring charges $ 56 $ 61 $ 109 $ 119
Supply Chain        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges 108   212  
Restructuring charges recorded to date 1,500   1,500  
Supply Chain | Restructuring Charges        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges 56   109  
Supply Chain | Cost of products sold        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges 20   47  
Supply Chain | Other (income) expense        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges 32   56  
Supply Chain | Minimum        
Restructuring Cost and Reserve [Line Items]        
Cost savings expected 600   600  
Restructuring estimated cost 1,900   1,900  
Supply Chain | Maximum        
Restructuring Cost and Reserve [Line Items]        
Cost savings expected 800   800  
Restructuring estimated cost 2,300   $ 2,300  
Medical Devices        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges $ 100 $ 100    
Medical Devices | Supply Chain | Minimum        
Restructuring Cost and Reserve [Line Items]        
Period for activity     4 years  
Medical Devices | Supply Chain | Maximum        
Restructuring Cost and Reserve [Line Items]        
Period for activity     5 years