Gain on Sale of an Asset (Payment) for Restructuring

No definition available.

Name:	jnj_GainOnSaleOfAnAssetPaymentForRestructuring
Namespace Prefix:	jnj_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.P.3)
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

+ Details

Name:	us-gaap_RestructuringCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

+ Details

Name:	us-gaap_RestructuringReserve
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of increase (decrease) in the accrual for restructuring costs.

+ References

+ Details

Name:	us-gaap_RestructuringReservePeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

Name:	us-gaap_RestructuringReserveRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of decrease in the reserve for full or partial settlement through consideration other than cash.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b)(2))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

+ Details

Name:	us-gaap_RestructuringReserveSettledWithoutCash2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RestructuringCostAndReserveAxis=us-gaap_EmployeeSeveranceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RestructuringCostAndReserveAxis=jnj_AssetWriteoffMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_RestructuringPlanAxis=jnj_SupplyChainMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RestructuringPlanAxis=jnj_MedicalDevicesMember
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Restructuring - Summary of Severance Charges and Associated Spending (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Restructuring Reserve [Roll Forward]
Restructuring charges	$ 247	$ 266	$ 251
Supply Chain
Restructuring Reserve [Roll Forward]
Reserve balance ending	144
Supply Chain \| Severance
Restructuring Reserve [Roll Forward]
Reserve balance ending	135
Supply Chain \| Asset Write-offs/Sales
Restructuring Reserve [Roll Forward]
Reserve balance ending	0
Supply Chain \| Other(2)
Restructuring Reserve [Roll Forward]
Reserve balance ending	9
Medical Devices
Restructuring Reserve [Roll Forward]
Restructuring charges	300	400
Supply Chain
Restructuring Reserve [Roll Forward]
Reserve balance beginning	180
Activity during the period		(62)
Restructuring charges	448
Cash settlements	(404)
Settled non cash	(80)
Reserve balance ending		180
Supply Chain \| Severance
Restructuring Reserve [Roll Forward]
Reserve balance beginning	164
Activity during the period		(30)
Restructuring charges	0
Cash settlements	(29)
Settled non cash	0
Reserve balance ending		164
Supply Chain \| Asset Write-offs/Sales
Restructuring Reserve [Roll Forward]
Reserve balance beginning	0
Activity during the period		0
Restructuring charges	43
Cash settlements	24
Settled non cash	(67)
Reserve balance ending		0
Supply Chain \| Other(2)
Restructuring Reserve [Roll Forward]
Reserve balance beginning	16
Activity during the period		(32)
Restructuring charges	405
Cash settlements	(399)
Settled non cash	$ (13)
Reserve balance ending		16
Medical Devices
Restructuring Reserve [Roll Forward]
Reserve balance beginning		242
Reserve balance ending			242
Medical Devices \| Severance
Restructuring Reserve [Roll Forward]
Reserve balance beginning		194
Reserve balance ending			194
Medical Devices \| Asset Write-offs/Sales
Restructuring Reserve [Roll Forward]
Reserve balance beginning		0
Reserve balance ending			0
Medical Devices \| Other(2)
Restructuring Reserve [Roll Forward]
Reserve balance beginning		$ 48
Reserve balance ending			$ 48