v3.26.1
Financial Instruments - Summary of Impact of Derivative Financial Instruments on Statements of Income (Details) - USD ($)
$ in Millions
 12 Months Ended
Jan. 31, 2026
Feb. 01, 2025
Feb. 03, 2024
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 $ (131) $ 59 $ (1)
Intercompany balances, primarily debt | Fair value hedges:      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (loss) recognized in income (42) 23 20
Intercompany balances in TJX International | Economic hedges for which hedge accounting was not elected:      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (loss) recognized in income (4) 0 0
Diesel fuel contracts | Economic hedges for which hedge accounting was not elected:      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (loss) recognized in income 6 (23) (19)
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 (5) 6 5
Merchandise purchase commitments | Economic hedges for which hedge accounting was not elected:      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (loss) recognized in income $ (86) $ 53 $ (7)