Cover - shares	9 Months Ended
	Sep. 29, 2024	Oct. 16, 2024
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 29, 2024
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		2,407,622,972
Entity Central Index Key	0000200406
Current Fiscal Year End Date	--12-29
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q3
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
1.150% Notes Due November 2028
Entity Information [Line Items]
Title of 12(b) Security	5.50% Notes Due November 2024
Trading Symbol	JNJ24BP
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	JNJ28
Security Exchange Name	NYSE
3.20% Notes Due November 2032
Entity Information [Line Items]
Title of 12(b) Security	3.20% Notes Due November 2032
Trading Symbol	JNJ32
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	JNJ35
Security Exchange Name	NYSE
3.350% Notes Due November 2036
Entity Information [Line Items]
Title of 12(b) Security	3.350% Notes Due November 2036
Trading Symbol	JNJ36A
Security Exchange Name	NYSE
3.550% Notes Due November 2044
Entity Information [Line Items]
Title of 12(b) Security	3.550% Notes Due November 2044
Trading Symbol	JNJ44
Security Exchange Name	NYSE