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Financial Instruments - Additional Information (Detail)	3 Months Ended
	May 04, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Hedge of diesel fuel requirement, remainder of fiscal year 2020	51.00%
Hedge of diesel fuel requirement, fiscal year 2021	45.00%

X

- Definition

Hedge Diesel Fuel Requirement, Remainder of Fiscal Year

+ References

No definition available.

+ Details

Name:	tjx_HedgeDieselFuelRequirementRemainderOfFiscalYear
Namespace Prefix:	tjx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Hedge Diesel Fuel Requirement, Second Year

+ References

No definition available.

+ Details

Name:	tjx_HedgeDieselFuelRequirementSecondYear
Namespace Prefix:	tjx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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