Financial Instruments - Summary of Impact of Derivative Financial Instruments on Statements of Income (Details) - USD ($) $ in Millions	12 Months Ended
Feb. 01, 2025	Feb. 03, 2024	Jan. 28, 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	Cost of sales, including buying and occupancy costs, Selling, general and administrative expenses
Gain (loss) recognized in income	$ 59	$ (1)	$ 129
Intercompany balances, primarily debt \| Fair value hedges:
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	23	20	12
Diesel fuel contracts \| Economic hedges for which hedge accounting was not elected:
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	(23)	(19)	55
Intercompany billings in TJX International, primarily merchandise: \| Economic hedges for which hedge accounting was not elected:
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	6	5	(9)
Merchandise purchase commitments: \| Economic hedges for which hedge accounting was not elected:
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	$ 53	$ (7)	$ 71

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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- 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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