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Business Combinations and Divestitures (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Jan. 26, 2017
Apr. 02, 2017
Apr. 03, 2016
Jan. 01, 2017
Business Acquisition [Line Items]        
Payments to acquire businesses   $ 4,852 $ 5  
Goodwill   24,844   $ 22,805
Codman Neurosurgery [Member]        
Business Acquisition [Line Items]        
Proceeds from Divestiture of Businesses   1,000    
Medical Devices [Member]        
Business Acquisition [Line Items]        
Goodwill   $ 13,646   $ 11,702
AMO [Member]        
Business Acquisition [Line Items]        
Weighted average useful life   14 years 6 months    
AMO [Member] | Medical Devices [Member]        
Business Acquisition [Line Items]        
Payments to acquire businesses   $ 4,400    
Finite-lived Intangible Assets Acquired   2,300    
Goodwill   1,900    
Actelion [Member]        
Business Acquisition [Line Items]        
Payments to acquire businesses $ 30,000      
Business Acquisition, Share Price $ 280      
Idorsia [Member]        
Business Acquisition [Line Items]        
Business Acquisition, Percentage of Voting Interests Acquired 16.00%      
Convertible Note, Equity Interest, Percentage 16.00%      
Inventories [Member] | Codman Neurosurgery [Member]        
Business Acquisition [Line Items]        
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent   65    
Property, Plant and Equipment [Member] | Codman Neurosurgery [Member]        
Business Acquisition [Line Items]        
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent   19    
Goodwill [Member] | Codman Neurosurgery [Member]        
Business Acquisition [Line Items]        
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent   $ 106