Share based compensation shares authorized under stock option plans by exercise price range.

No definition available.

Name:	jnj_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAbstract
Namespace Prefix:	jnj_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

+ Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ References

+ Details

Name:	us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Subparagraph (e)(1)
-Name Accounting Standards Codification
-Paragraph 2
-Section 50
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=jnj_ExercisePriceRangeOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=jnj_ExercisePriceRangeTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=jnj_ExercisePriceRangeThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=jnj_ExercisePriceRangeFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=jnj_ExercisePriceRangeFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Common stock, stock option plans and stock compensation agreements - Summary of Options Outstanding (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 29, 2024	Dec. 31, 2023	Jan. 01, 2023
Stock options outstanding and exercisable
Outstanding number of Options (in shares)	112,629	112,238	118,672
Outstanding, Average Life	5 years 3 months 18 days	5 years 6 months	5 years 9 months 18 days
Outstanding Average Exercise Price (in dollars per share)	$ 144.69
Exercisable number of Options (in shares)	74,683
Exercisable, Average Exercise Price (in dollars per share)	$ 135.72
$100.06 - $101.87
Stock options outstanding and exercisable
Price Range, Minimum (in dollars per share)	100.06
Price Range, Maximum (in dollars per share)	$ 101.87
Outstanding number of Options (in shares)	13,016
Outstanding, Average Life	9 months 18 days
Outstanding Average Exercise Price (in dollars per share)	$ 101.29
Exercisable number of Options (in shares)	13,016
Exercisable, Average Exercise Price (in dollars per share)	$ 101.29
$115.67 - $129.51
Stock options outstanding and exercisable
Price Range, Minimum (in dollars per share)	115.67
Price Range, Maximum (in dollars per share)	$ 129.51
Outstanding number of Options (in shares)	18,252
Outstanding, Average Life	2 years 7 months 6 days
Outstanding Average Exercise Price (in dollars per share)	$ 122.49
Exercisable number of Options (in shares)	18,252
Exercisable, Average Exercise Price (in dollars per share)	$ 122.49
$131.94 - $151.41
Stock options outstanding and exercisable
Price Range, Minimum (in dollars per share)	131.94
Price Range, Maximum (in dollars per share)	$ 151.41
Outstanding number of Options (in shares)	25,624
Outstanding, Average Life	4 years 7 months 6 days
Outstanding Average Exercise Price (in dollars per share)	$ 142.87
Exercisable number of Options (in shares)	25,624
Exercisable, Average Exercise Price (in dollars per share)	$ 142.87
$157.92 - $162.75
Stock options outstanding and exercisable
Price Range, Minimum (in dollars per share)	157.92
Price Range, Maximum (in dollars per share)	$ 162.75
Outstanding number of Options (in shares)	26,391
Outstanding, Average Life	8 years 7 months 6 days
Outstanding Average Exercise Price (in dollars per share)	$ 160.33
Exercisable number of Options (in shares)	4,269
Exercisable, Average Exercise Price (in dollars per share)	$ 162.75
$164.62 - $165.89
Stock options outstanding and exercisable
Price Range, Minimum (in dollars per share)	164.62
Price Range, Maximum (in dollars per share)	$ 165.89
Outstanding number of Options (in shares)	29,346
Outstanding, Average Life	6 years 7 months 6 days
Outstanding Average Exercise Price (in dollars per share)	$ 165.29
Exercisable number of Options (in shares)	13,522
Exercisable, Average Exercise Price (in dollars per share)	$ 164.64