Financial Instruments - Impact of Derivative Financial Instruments on Statement of Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jul. 29, 2023	Jul. 30, 2022	Jul. 29, 2023	Jul. 30, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Cost of sales, including buying and occupancy costs, Selling, general and administrative expenses	Cost of sales, including buying and occupancy costs, Selling, general and administrative expenses
(Loss) gain recognized in income	$ (19)	$ 26	$ (23)	$ 135
Intercompany balances, primarily debt: \| Fair Value Hedges
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in income	(3)	9	3	33
Diesel fuel contracts \| Economic Hedges For Which Hedge Accounting Was Not Elected
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in income	10	10	(8)	54
Intercompany billings in TJX International, primarily merchandise \| Economic Hedges For Which Hedge Accounting Was Not Elected
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in income	4	0	4	0
Merchandise purchase commitments \| Economic Hedges For Which Hedge Accounting Was Not Elected
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in income	$ (30)	$ 7	$ (22)	$ 48

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A

+ Details

Name:	us-gaap_DerivativeGainLossOnDerivativeNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Indicates line item in statement of income or comprehensive income that includes gain (loss) from derivative.

+ References

+ Details

Name:	us-gaap_DerivativeGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration
Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	duration

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4E
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4E

+ Details

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

- Details

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

- Details

Name:	us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_FairValueHedgingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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