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COMMITMENTS AND GUARANTEES - Summary of Contractual Commitments (Details) - Marketing and other commitments $ in Millions | Jan. 02, 2021 USD ($)
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Guarantor Obligations [Line Items] |
Total | $ 39.4
2021 | 27.2
2022 | 11.8
2023 | 0.4
2024 | 0.0
2025 | 0.0
Thereafter | $ 0.0

X
- Definition Commitments Total + References No definition available. + Details
Name: | swk_CommitmentsTotal
Namespace Prefix: | swk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Commitments Year Five + References No definition available. + Details
Name: | swk_CommitmentsYearFive
Namespace Prefix: | swk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Commitments Year Five And Thereafter + References No definition available. + Details
Name: | swk_CommitmentsYearFiveAndThereafter
Namespace Prefix: | swk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Commitments Year Four + References No definition available. + Details
Name: | swk_CommitmentsYearFour
Namespace Prefix: | swk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Commitments Year One + References No definition available. + Details
Name: | swk_CommitmentsYearOne
Namespace Prefix: | swk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Commitments Year Three + References No definition available. + Details
Name: | swk_CommitmentsYearThree
Namespace Prefix: | swk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Commitments Year Two + References No definition available. + Details
Name: | swk_CommitmentsYearTwo
Namespace Prefix: | swk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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 No definition available. + Details
Name: | us-gaap_GuaranteeObligationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | swk_LiabilitiesForCommitmentsAxis=swk_MarketingObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |