Debt Instrument, Maturity, Month and Year

No definition available.

Name:	tjx_DebtInstrumentMaturityMonthAndYear
Namespace Prefix:	tjx_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Ratio Of Indebtedness To Earnings Before Interest Tax Depreciation And Amortization

+ References

No definition available.

+ Details

Name:	tjx_RatioOfIndebtednessToEarningsBeforeInterestTaxDepreciationAndAmortization
Namespace Prefix:	tjx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Revolving credit facilities, number

+ References

No definition available.

+ Details

Name:	tjx_RevolvingCreditFacilitiesNumber
Namespace Prefix:	tjx_
Data Type:	xbrli:positiveIntegerItemType
Balance Type:	na
Period Type:	instant

- 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_DebtInstrumentLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=tjx_RevolvingCreditFacilityMarchTwentyTwentyMember
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- Details

Name:	us-gaap_DebtInstrumentAxis=tjx_RevolvingCreditFacilityMarchTwentyTwentyTwoMember
Namespace Prefix:
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Balance Type:
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- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=tjx_TjxCanadaMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_CreditFacilityAxis=tjx_TJXEuropeCreditLineMember
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Long-Term Debt and Credit Lines - Additional Information (Detail)	3 Months Ended		12 Months Ended
	May 05, 2018 USD ($) CreditFacility	Apr. 29, 2017 USD ($) CreditFacility	Feb. 03, 2018 USD ($) CreditFacility	May 05, 2018 CAD ($) CreditFacility	May 05, 2018 GBP (£) CreditFacility	Feb. 03, 2018 CAD ($) CreditFacility	Feb. 03, 2018 GBP (£) CreditFacility	Apr. 29, 2017 CAD ($) CreditFacility	Apr. 29, 2017 GBP (£) CreditFacility
Debt Instrument [Line Items]
Revolving credit facilities, number \| CreditFacility	2	2	2	2	2	2	2	2	2
Quarterly payments on unused committed amounts	0.06%
Ratio of funded debt and four-times consolidated rentals to consolidated earnings before interest, taxes, consolidated rentals, depreciation and amortization	275.00%			275.00%	275.00%
Credit facilities, amount outstanding	$ 0	$ 0	$ 0
Revolving Credit Facility March 2020
Debt Instrument [Line Items]
Current borrowing capacity	$ 500,000,000	$ 500,000,000	$ 500,000,000
Maturity Month/Year	2020-03	2020-03	2020-03
Revolving Credit Facility March 2022
Debt Instrument [Line Items]
Current borrowing capacity	$ 500,000,000	$ 500,000,000	$ 500,000,000
Maturity Month/Year	2022-03	2022-03	2022-03
TJX Canada
Debt Instrument [Line Items]
Current borrowing capacity				$ 10,000,000		$ 10,000,000		$ 10,000,000
Credit facilities, amount outstanding				0		0		0
TJX Canada \| Letter of Credit
Debt Instrument [Line Items]
Current borrowing capacity				10,000,000		10,000,000		10,000,000
Credit facilities, amount outstanding				$ 0		$ 0		$ 0
TJX International \| TJX Europe Credit Line
Debt Instrument [Line Items]
Current borrowing capacity \| £					£ 5,000,000		£ 5,000,000		£ 5,000,000
Credit facilities, amount outstanding \| £					£ 0		£ 0		£ 0