Description of the Plan (Details) - EBP 200	12 Months Ended
Dec. 31, 2025 USD ($) year	Dec. 31, 2024
EBP, Description of Plan [Line Items]
Automatic enrollment period	30 days
Automatic deferral rate	6.00%
Participant contribution, pre-tax, minimum, percentage	3.00%
Participant contribution, maximum annual compensation to total compensation, percentage	25.00%
Participant contribution, post-tax, minimum, percentage	1.00%
Participant contribution, post-tax, maximum, percentage	10.00%
Employer contribution, matching percentage	75.00%	75.00%
Employer contribution, participant compensation matched, percentage	6.00%	6.00%
Participant contribution, limit To company stock fund, percentage	20.00%
Participant contribution, aggregate value in company stock fund, percentage	20.00%
Participant contribution, investment performance or reinvestment of dividends, not subject to limit, percentage	20.00%
Employer contribution maximum vesting age \| year	55
Forfeited nonvested account, decrease from employer contribution	$ 504
Forfeited nonvested account	1,241
Involuntary cash-out limit	5,000
Annual participant administrative fee	$ 36
Asset held for investment, participant loan, interest rate	3.25%
Hired Before January 1, 2025
EBP, Description of Plan [Line Items]
Employer contribution vesting service period	1 year
Hired After January 1, 2025
EBP, Description of Plan [Line Items]
Employer contribution vesting service period	3 years

EBP, Annual Participant Administrative Fee

No definition available.

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- Definition

EBP, Employer Contribution Maximum Vesting Age

+ References

No definition available.

+ Details

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- Definition

EBP, Employer Contribution Vesting Service Period

+ References

No definition available.

+ Details

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- Definition

EBP, Involuntary Cash-out Limit

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

EBP, Participant Contribution, After Tax, Maximum Annual Compensation to Total Compensation, Percentage

+ References

No definition available.

+ Details

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- Definition

EBP, Participant Contribution, After Tax, Minimum Annual Compensation to Total Compensation, Percentage

+ References

No definition available.

+ Details

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- Definition

EBP, Participant Contribution, Aggregate Value In Company Stock Fund, Maximum, Percentage

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
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- Definition

EBP, Participant Contribution, Automatic Enrollment Period Threshold

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
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- Definition

EBP, Participant Contribution, Investment Performance Or Reinvestment Of Dividends, Not Subject To Limit, Percentage

+ References

No definition available.

+ Details

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- Definition

EBP, Participant Contribution, Limit To Company Stock Fund, Percentage

+ References

No definition available.

+ Details

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Namespace Prefix:	jnj_
Data Type:	dtr-types:percentItemType
Balance Type:	na
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- Definition

EBP, Participant Contribution, Pretax, Minimum Annual Compensation to Total Compensation, Percentage

+ References

No definition available.

+ Details

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Namespace Prefix:	jnj_
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Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

+ Details

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- Definition

Percentage of employer matching contribution on eligible participant contribution to employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

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Period Type:	duration

- Definition

Percentage of participant compensation eligible for employer matching contribution for participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of plan asset, in forfeited nonvested account, no longer allocated to participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

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- Definition

Amount of decrease in forfeited nonvested account of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) from employer contribution.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (j)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-04(5)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

+ Details

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- Definition

Percentage of eligible compensation contributed for participant automatically enrolled in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

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Period Type:	duration

- Definition

Percentage of maximum pretax annual compensation that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), is permitted to contribute to total pretax annual compensation.

+ References

+ Details

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Namespace Prefix:	us-gaap-ebp_
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Period Type:	duration

- Definition

Interest rate on participant loan in schedule of asset held for investment of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Employee Retirement Income Security Act of 1974
-Number 2520
-Section 103
-Subsection 10
-Paragraph b
-Subparagraph (1)(i)(D)
-Publisher DOL-EBSA

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-05(a)(Schedule I))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

+ Details

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- Details

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- Details

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