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Financial Instruments - Additional Information (Detail)	3 Months Ended
	May 05, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Hedge of diesel fuel requirement, remainder of fiscal year 2019	50.00%
Hedge of diesel fuel requirement, fiscal year 2020	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

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