| Cover | Jul. 17, 2024 |
| Cover [Abstract] | |
| Document Period End Date | Jul. 17, 2024 |
| Document Type | 8-K |
| Entity Registrant Name | Johnson & Johnson |
| Entity Incorporation, State or Country Code | NJ |
| Entity File Number | 1-3215 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Document Information [Line Items] | |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000200406 |
| Amendment Flag | false |
| Common Stock | |
| Cover [Abstract] | |
| Title of 12(b) Security | Common Stock, Par Value $1.00 |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common Stock, Par Value $1.00 |
| Trading Symbol | JNJ |
| Security Exchange Name | NYSE |
| Trading Symbol | JNJ |
| Security Exchange Name | NYSE |
| 5.50% Notes Due 2024 | |
| Cover [Abstract] | |
| Title of 12(b) Security | 5.50% Notes Due November 2024 |
| Document Information [Line Items] | |
| Title of 12(b) Security | 5.50% Notes Due November 2024 |
| Trading Symbol | JNJ24BP |
| Security Exchange Name | NYSE |
| Trading Symbol | JNJ24BP |
| Security Exchange Name | NYSE |
| 1.150% Notes Due November 2028 | |
| Cover [Abstract] | |
| Title of 12(b) Security | 1.150% Notes Due November 2028 |
| Document Information [Line Items] | |
| Title of 12(b) Security | 1.150% Notes Due November 2028 |
| Trading Symbol | JNJ28 |
| Security Exchange Name | NYSE |
| Trading Symbol | JNJ28 |
| Security Exchange Name | NYSE |
| 1.650% Notes Due 2035 | |
| Cover [Abstract] | |
| Title of 12(b) Security | 1.650% Notes Due May 2035 |
| Document Information [Line Items] | |
| Title of 12(b) Security | 1.650% Notes Due May 2035 |
| Trading Symbol | JNJ35 |
| Security Exchange Name | NYSE |
| Trading Symbol | JNJ35 |
| Security Exchange Name | NYSE |
| 3.20% Notes Due November 2032 | |
| Cover [Abstract] | |
| Title of 12(b) Security | 3.20% Notes Due November 2032 |
| Document Information [Line Items] | |
| Title of 12(b) Security | 3.20% Notes Due November 2032 |
| Trading Symbol | JNJ32 |
| Security Exchange Name | NYSE |
| Trading Symbol | JNJ32 |
| Security Exchange Name | NYSE |
| 3.350% Notes Due November 2036 | |
| Cover [Abstract] | |
| Title of 12(b) Security | 3.350% Notes Due November 2036 |
| Document Information [Line Items] | |
| Title of 12(b) Security | 3.350% Notes Due November 2036 |
| Trading Symbol | JNJ36A |
| Security Exchange Name | NYSE |
| Trading Symbol | JNJ36A |
| Security Exchange Name | NYSE |
| 3.550% Notes Due November 2044 | |
| Cover [Abstract] | |
| Title of 12(b) Security | 3.550% Notes Due November 2044 |
| Document Information [Line Items] | |
| Title of 12(b) Security | 3.550% Notes Due November 2044 |
| Trading Symbol | JNJ44 |
| Security Exchange Name | NYSE |
| Trading Symbol | JNJ44 |
| Security Exchange Name | NYSE |
