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Intangible Assets and Goodwill - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Apr. 02, 2017
Apr. 03, 2016
Jan. 01, 2017
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months $ 1,500    
Finite-Lived Intangible Assets, Amortization Expense, Year Two 1,500    
Finite-Lived Intangible Assets, Amortization Expense, Year Three 1,500    
Finite-Lived Intangible Assets, Amortization Expense, Year Four 1,500    
Finite-Lived Intangible Assets, Amortization Expense, Year Five 1,500    
Intangible Assets and Goodwill (Textuals)      
Amortization expense of amortizable intangible assets 329 $ 282  
Goodwill $ 24,844   $ 22,805
Patents And Trademarks      
Intangible Assets and Goodwill (Textuals)      
Finite-Lived Intangible Assets, Weighted-Average Useful Life 19 years    
Customer relationships and other intangible assets      
Intangible Assets and Goodwill (Textuals)      
Finite-Lived Intangible Assets, Weighted-Average Useful Life 23 years    
Pharmaceutical      
Intangible Assets and Goodwill (Textuals)      
Goodwill $ 2,854   2,840
Medical Devices [Member]      
Intangible Assets and Goodwill (Textuals)      
Goodwill 13,646   $ 11,702
AMO [Member] | Medical Devices [Member]      
Intangible Assets and Goodwill (Textuals)      
Finite-lived Intangible Assets Acquired 2,300    
Goodwill 1,900    
Goodwill [Member] | Codman Neurosurgery [Member]      
Finite-Lived Intangible Assets [Line Items]      
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent $ 106