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Financial Instruments - Additional Information (Details) | 6 Months Ended
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Jul. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items] |
Hedge of diesel fuel requirement, remainder of fiscal year 2022 | 47.00%
Hedge of diesel fuel requirement, second six months of fiscal year 2023 | 50.00%
Foreign currency exchange contracts |
Derivative Instruments, Gain (Loss) [Line Items] |
Term of derivative contracts | 30 days

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- Definition Hedge Diesel Fuel Requirement, Remainder of Fiscal Year + References No definition available. + Details
Name: | tjx_HedgeDieselFuelRequirementRemainderOfFiscalYear
Namespace Prefix: | tjx_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Hedge Diesel Fuel Requirement, Year One + References No definition available. + Details
Name: | tjx_HedgeDieselFuelRequirementYearOne
Namespace Prefix: | tjx_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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

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- Definition Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_DerivativeTermOfContract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |