Financial Instruments - Impact of Derivative Financial Instruments on Statement of Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
May 04, 2024	Apr. 29, 2023
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
Amount of Gain (Loss) Recognized in Income by Derivative	$ 7	$ (4)
Intercompany balances, primarily debt: \| Fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income by Derivative	1	6
Diesel fuel contracts \| Economic hedges for which hedge accounting was not elected
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income by Derivative	(5)	(18)
Intercompany billings in TJX International, primarily merchandise \| Economic hedges for which hedge accounting was not elected
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income by Derivative	0	0
Merchandise purchase commitments \| Economic hedges for which hedge accounting was not elected
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income by Derivative	$ 11	$ 8

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

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

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- 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

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