v3.26.1
Financial Instruments - Impact of Derivative Financial Instruments on Statement of Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Aug. 01, 2026
Aug. 02, 2025
Aug. 01, 2026
Aug. 02, 2025
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain (Loss) Recognized in Income by Derivative $ 55 $ 2 $ 109 $ (95)
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
Intercompany balances, primarily debt | Fair value hedges        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain (Loss) Recognized in Income by Derivative $ 9 $ (7) $ 8 $ (30)
Intercompany balances in TJX International | 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 4 0
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 16 11 63 (1)
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 2 (5) 4 (8)
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 $ 28 $ 3 $ 30 $ (56)