v3.19.2
Cover - shares
6 Months Ended
Jun. 30, 2019
Jul. 24, 2019
Entity Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2019  
Document Transition Report false  
Entity File Number 1-3215  
Entity Registrant Name Johnson & Johnson  
Entity Incorporation, State or Country Code NJ  
Entity Tax Identification Number 22-1024240  
Entity Address, Address Line One One Johnson & Johnson Plaza  
Entity Address, City or Town New Brunswick  
Entity Address, State or Province NJ  
Entity Address, Postal Zip Code 08933  
City Area Code 732  
Local Phone Number 524-0400  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   2,639,165,527
Entity Central Index Key 0000200406  
Current Fiscal Year End Date --12-29  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Common Stock, Par Value $1.00    
Entity Information [Line Items]    
Title of 12(b) Security Common Stock, Par Value $1.00  
Trading Symbol JNJ  
Security Exchange Name NYSE  
4.75% Notes Due November 2019    
Entity Information [Line Items]    
Title of 12(b) Security 4.75% Notes Due November 2019  
Trading Symbol JNJ  
Security Exchange Name NYSE  
0.250% Notes Due January 2022    
Entity Information [Line Items]    
Title of 12(b) Security 0.250% Notes Due January 2022  
Trading Symbol JNJ  
Security Exchange Name NYSE  
0.650% Notes Due May 2024    
Entity Information [Line Items]    
Title of 12(b) Security 0.650% Notes Due May 2024  
Trading Symbol JNJ  
Security Exchange Name NYSE  
5.50% Notes Due November 2024    
Entity Information [Line Items]    
Title of 12(b) Security 5.50% Notes Due November 2024  
Trading Symbol JNJ  
Security Exchange Name NYSE  
1.150% Notes Due November 2028    
Entity Information [Line Items]    
Title of 12(b) Security 1.150% Notes Due November 2028  
Trading Symbol JNJ  
Security Exchange Name NYSE  
1.650% Notes Due May 2035    
Entity Information [Line Items]    
Title of 12(b) Security 1.650% Notes Due May 2035  
Trading Symbol JNJ  
Security Exchange Name NYSE