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Financial Instruments - Additional Information (Details)	6 Months Ended
	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

X

- 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

X

- 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

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

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

X

- 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

X

- Details

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