Financial Instruments - Impact of Derivative Financial Instruments on Statement of Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Nov. 02, 2024	Oct. 28, 2023	Nov. 02, 2024	Oct. 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	Cost of sales, including buying and occupancy costs, Selling, general and administrative expenses
Amount of (Loss) Gain Recognized in Income by Derivative	$ 1	$ 75	$ 1	$ 52
Intercompany balances, primarily debt | Fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in Income by Derivative	2	26	3	29
Diesel fuel contracts | Economic hedges for which hedge accounting was not elected
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in Income by Derivative	(6)	2	(22)	(6)
Intercompany billings in TJX International, primarily merchandise | Economic hedges for which hedge accounting was not elected
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in Income by Derivative	4	(2)	5	2
Merchandise purchase commitments | Economic hedges for which hedge accounting was not elected
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in Income by Derivative	$ 1	$ 49	$ 15	$ 27