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Restructuring - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended
Apr. 04, 2021
Mar. 29, 2020
Restructuring Cost and Reserve [Line Items]    
Restructuring charges $ 53 $ 58
Supply Chain    
Restructuring Cost and Reserve [Line Items]    
Restructuring charges 104  
Restructuring charges recorded to date 1,400  
Supply Chain | Restructuring Charges    
Restructuring Cost and Reserve [Line Items]    
Restructuring charges 53  
Supply Chain | Cost of products sold    
Restructuring Cost and Reserve [Line Items]    
Restructuring charges 27  
Supply Chain | Other (income) expense    
Restructuring Cost and Reserve [Line Items]    
Restructuring charges 24  
Supply Chain | Minimum    
Restructuring Cost and Reserve [Line Items]    
Cost savings expected 600  
Restructuring estimated cost 1,900  
Supply Chain | Maximum    
Restructuring Cost and Reserve [Line Items]    
Cost savings expected 800  
Restructuring estimated cost 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