v3.26.1
Financial Instruments - Summary of Derivative Financial Instruments, Related Fair Value and Balance Sheet Classification (Details)
€ in Millions, £ in Millions, zł in Millions, gal / mo in Millions, $ in Millions, $ in Millions, $ in Millions
 12 Months Ended
Jan. 31, 2026
EUR (€)
gal / mo
Feb. 01, 2025
EUR (€)
gal / mo
Jan. 31, 2026
GBP (£)
Jan. 31, 2026
USD ($)
Jan. 31, 2026
AUD ($)
Jan. 31, 2026
CAD ($)
Jan. 31, 2026
PLN (zł)
Feb. 01, 2025
GBP (£)
Feb. 01, 2025
USD ($)
Feb. 01, 2025
AUD ($)
Feb. 01, 2025
CAD ($)
Feb. 01, 2025
PLN (zł)
Derivatives, Fair Value [Line Items]                        
Current Asset U.S.$       $ 9.0         $ 53.1      
Current (Liability) U.S.$       (46.1)         (18.1)      
Net Fair Value in U.S.$       $ (37.1)         $ 35.0      
Intercompany balances, primarily debt | Prepaid Expense | Conversion Of Euro To Pound | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate 0.8759   0.8759 0.8759 0.8759 0.8759 0.8759          
Current Asset U.S.$       $ 0.9                
Current (Liability) U.S.$       0.0                
Net Fair Value in U.S.$       $ 0.9                
Intercompany balances, primarily debt | Prepaid Expense | Conversion Of Australian Dollar To US Dollar | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate   0.6420           0.6420 0.6420 0.6420 0.6420 0.6420
Current Asset U.S.$                 $ 3.5      
Current (Liability) U.S.$                 0.0      
Net Fair Value in U.S.$                 $ 3.5      
Intercompany balances, primarily debt | Prepaid Expense | Conversion Of US Dollar To Pound | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate   0.8177           0.8177 0.8177 0.8177 0.8177 0.8177
Current Asset U.S.$                 $ 0.8      
Current (Liability) U.S.$                 0.0      
Net Fair Value in U.S.$                 $ 0.8      
Intercompany balances, primarily debt | (Accrued Expense) | Conversion Of Australian Dollar To US Dollar | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate 0.6648   0.6648 0.6648 0.6648 0.6648 0.6648          
Current Asset U.S.$       $ 0.0                
Current (Liability) U.S.$       (6.9)                
Net Fair Value in U.S.$       $ (6.9)                
Intercompany balances, primarily debt | (Accrued Expense) | Conversion Of Pound To US Dollar | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate   1.2222           1.2222 1.2222 1.2222 1.2222 1.2222
Current Asset U.S.$                 $ 0.0      
Current (Liability) U.S.$                 (0.9)      
Net Fair Value in U.S.$                 $ (0.9)      
Intercompany balances, primarily debt | (Accrued Expense) | Conversion Of Euro To US Dollar | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate 1.1718   1.1718 1.1718 1.1718 1.1718 1.1718          
Current Asset U.S.$       $ 0.0                
Current (Liability) U.S.$       (3.2)                
Net Fair Value in U.S.$       (3.2)                
Intercompany balances, primarily debt | Prepaid Expense / (Accrued Expense) | Conversion Of Euro To Pound | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate   0.8523           0.8523 0.8523 0.8523 0.8523 0.8523
Current Asset U.S.$                 $ 0.7      
Current (Liability) U.S.$                 (0.1)      
Net Fair Value in U.S.$                 $ 0.6      
Intercompany balances, primarily debt | Prepaid Expense / (Accrued Expense) | Conversion Of Euro To US Dollar | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate   1.0852           1.0852 1.0852 1.0852 1.0852 1.0852
Current Asset U.S.$                 $ 7.6      
Current (Liability) U.S.$                 (0.4)      
Net Fair Value in U.S.$                 7.2      
Diesel fuel contracts | Prepaid Expense                        
Derivatives, Fair Value [Line Items]                        
Current Asset U.S.$       6.2                
Current (Liability) U.S.$       0.0                
Net Fair Value in U.S.$       $ 6.2                
Diesel fuel contracts | (Accrued Expense)                        
Derivatives, Fair Value [Line Items]                        
Current Asset U.S.$                 0.0      
Current (Liability) U.S.$                 (9.1)      
Net Fair Value in U.S.$                 $ (9.1)      
Intercompany billings in TJX International, primarily merchandise | Prepaid Expense | Conversion Of Euro To Pound                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate 0.8680 0.8442 0.8680 0.8680 0.8680 0.8680 0.8680 0.8442 0.8442 0.8442 0.8442 0.8442
Current Asset U.S.$       $ 0.2         $ 1.5      
Current (Liability) U.S.$       0.0         0.0      
Net Fair Value in U.S.$       $ 0.2         $ 1.5      
Intercompany balances in TJX International | (Accrued Expense) | Conversion Of Pound To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate 1.3472   1.3472 1.3472 1.3472 1.3472 1.3472          
Current Asset U.S.$       $ 0.0                
Current (Liability) U.S.$       (3.6)                
Net Fair Value in U.S.$       $ (3.6)                
Merchandise purchase commitments | Prepaid Expense | Conversion Of Canadian Dollar To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate   0.7159           0.7159 0.7159 0.7159 0.7159 0.7159
Current Asset U.S.$                 $ 21.9      
Current (Liability) U.S.$                 0.0      
Net Fair Value in U.S.$                 $ 21.9      
Merchandise purchase commitments | (Accrued Expense) | Conversion Of Australian Dollar To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate 0.6621   0.6621 0.6621 0.6621 0.6621 0.6621          
Current Asset U.S.$       $ 0.0                
Current (Liability) U.S.$       (4.1)                
Net Fair Value in U.S.$       $ (4.1)                
Merchandise purchase commitments | (Accrued Expense) | Conversion Of Pound To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate 1.3386   1.3386 1.3386 1.3386 1.3386 1.3386          
Current Asset U.S.$       $ 0.0                
Current (Liability) U.S.$       (17.0)                
Net Fair Value in U.S.$       $ (17.0)                
Merchandise purchase commitments | (Accrued Expense) | Conversion Of Zloty To Pound                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate   0.1933           0.1933 0.1933 0.1933 0.1933 0.1933
Current Asset U.S.$                 $ 0.0      
Current (Liability) U.S.$                 (3.5)      
Net Fair Value in U.S.$                 $ (3.5)      
Merchandise purchase commitments | Prepaid Expense / (Accrued Expense) | Conversion Of Australian Dollar To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate   0.6448           0.6448 0.6448 0.6448 0.6448 0.6448
Current Asset U.S.$                 $ 1.7      
Current (Liability) U.S.$                 (0.1)      
Net Fair Value in U.S.$                 $ 1.6      
Merchandise purchase commitments | Prepaid Expense / (Accrued Expense) | Conversion Of Pound To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate   1.2742           1.2742 1.2742 1.2742 1.2742 1.2742
Current Asset U.S.$                 $ 15.2      
Current (Liability) U.S.$                 (1.1)      
Net Fair Value in U.S.$                 $ 14.1      
Merchandise purchase commitments | Prepaid Expense / (Accrued Expense) | Conversion Of Canadian Dollar To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate 0.7241   0.7241 0.7241 0.7241 0.7241 0.7241          
Current Asset U.S.$       $ 0.1                
Current (Liability) U.S.$       (10.8)                
Net Fair Value in U.S.$       $ (10.7)                
Merchandise purchase commitments | Prepaid Expense / (Accrued Expense) | Conversion Of Canadian Dollar To Euro                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate 0.6176 0.6673 0.6176 0.6176 0.6176 0.6176 0.6176 0.6673 0.6673 0.6673 0.6673 0.6673
Current Asset U.S.$       $ 0.0         $ 0.1      
Current (Liability) U.S.$       (0.1)         (0.0)      
Net Fair Value in U.S.$       $ (0.1)         $ 0.1      
Merchandise purchase commitments | Prepaid Expense / (Accrued Expense) | Conversion Of Zloty To Pound                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate 0.2062   0.2062 0.2062 0.2062 0.2062 0.2062          
Current Asset U.S.$       $ 0.7                
Current (Liability) U.S.$       (0.3)                
Net Fair Value in U.S.$       $ 0.4                
Merchandise purchase commitments | Prepaid Expense / (Accrued Expense) | Conversion Of US Dollar To Euro                        
Derivatives, Fair Value [Line Items]                        
Blended Contract Rate 0.8495 0.9317 0.8495 0.8495 0.8495 0.8495 0.8495 0.9317 0.9317 0.9317 0.9317 0.9317
Current Asset U.S.$       $ 0.9         $ 0.1      
Current (Liability) U.S.$       (0.1)         (2.9)      
Net Fair Value in U.S.$       0.8         (2.8)      
Pay | Intercompany balances, primarily debt | Prepaid Expense | Conversion Of Euro To Pound | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | € € 83                      
Pay | Intercompany balances, primarily debt | Prepaid Expense | Conversion Of Australian Dollar To US Dollar | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount                   $ 210    
Pay | Intercompany balances, primarily debt | Prepaid Expense | Conversion Of US Dollar To Pound | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount                 67.0      
Pay | Intercompany balances, primarily debt | (Accrued Expense) | Conversion Of Australian Dollar To US Dollar | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount         $ 240              
Pay | Intercompany balances, primarily debt | (Accrued Expense) | Conversion Of Pound To US Dollar | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | £               £ 50        
Pay | Intercompany balances, primarily debt | (Accrued Expense) | Conversion Of Euro To US Dollar | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | € 200                      
Pay | Intercompany balances, primarily debt | Prepaid Expense / (Accrued Expense) | Conversion Of Euro To Pound | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | €   € 79                    
Pay | Intercompany balances, primarily debt | Prepaid Expense / (Accrued Expense) | Conversion Of Euro To US Dollar | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | €   200                    
Pay | Intercompany billings in TJX International, primarily merchandise | Prepaid Expense | Conversion Of Euro To Pound                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | € € 111 € 175                    
Pay | Intercompany balances in TJX International | (Accrued Expense) | Conversion Of Pound To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | £     £ 168                  
Pay | Merchandise purchase commitments | Prepaid Expense | Conversion Of Canadian Dollar To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount                     $ 873  
Pay | Merchandise purchase commitments | (Accrued Expense) | Conversion Of Australian Dollar To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount         $ 122              
Pay | Merchandise purchase commitments | (Accrued Expense) | Conversion Of Pound To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | £     572                  
Pay | Merchandise purchase commitments | (Accrued Expense) | Conversion Of Zloty To Pound                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | zł                       zł 552
Pay | Merchandise purchase commitments | Prepaid Expense / (Accrued Expense) | Conversion Of Australian Dollar To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount                   $ 81    
Pay | Merchandise purchase commitments | Prepaid Expense / (Accrued Expense) | Conversion Of Pound To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | £               416        
Pay | Merchandise purchase commitments | Prepaid Expense / (Accrued Expense) | Conversion Of Canadian Dollar To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount           $ 856            
Pay | Merchandise purchase commitments | Prepaid Expense / (Accrued Expense) | Conversion Of Canadian Dollar To Euro                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount           $ 37         $ 33  
Pay | Merchandise purchase commitments | Prepaid Expense / (Accrued Expense) | Conversion Of Zloty To Pound                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | zł             zł 402          
Pay | Merchandise purchase commitments | Prepaid Expense / (Accrued Expense) | Conversion Of US Dollar To Euro                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount       87.0         87.0      
Pay | Minimum | Diesel fuel contracts | Prepaid Expense                        
Derivatives, Fair Value [Line Items]                        
Derivative nonmonetary notional amount | gal / mo 3.2                      
Pay | Minimum | Diesel fuel contracts | (Accrued Expense)                        
Derivatives, Fair Value [Line Items]                        
Derivative nonmonetary notional amount | gal / mo   3.1                    
Pay | Maximum | Diesel fuel contracts | Prepaid Expense                        
Derivatives, Fair Value [Line Items]                        
Derivative nonmonetary notional amount | gal / mo 3.9                      
Pay | Maximum | Diesel fuel contracts | (Accrued Expense)                        
Derivatives, Fair Value [Line Items]                        
Derivative nonmonetary notional amount | gal / mo   3.9                    
Receive | Intercompany balances, primarily debt | Prepaid Expense | Conversion Of Euro To Pound | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | £     73                  
Receive | Intercompany balances, primarily debt | Prepaid Expense | Conversion Of Australian Dollar To US Dollar | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount                 135.0      
Receive | Intercompany balances, primarily debt | Prepaid Expense | Conversion Of US Dollar To Pound | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | £               55        
Receive | Intercompany balances, primarily debt | (Accrued Expense) | Conversion Of Australian Dollar To US Dollar | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount       160.0                
Receive | Intercompany balances, primarily debt | (Accrued Expense) | Conversion Of Pound To US Dollar | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount                 61.0      
Receive | Intercompany balances, primarily debt | (Accrued Expense) | Conversion Of Euro To US Dollar | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount       234.0                
Receive | Intercompany balances, primarily debt | Prepaid Expense / (Accrued Expense) | Conversion Of Euro To Pound | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | £               67        
Receive | Intercompany balances, primarily debt | Prepaid Expense / (Accrued Expense) | Conversion Of Euro To US Dollar | Fair value hedges:                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount                 217.0      
Receive | Intercompany billings in TJX International, primarily merchandise | Prepaid Expense | Conversion Of Euro To Pound                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | £     96         148        
Receive | Intercompany balances in TJX International | (Accrued Expense) | Conversion Of Pound To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount       226.0                
Receive | Merchandise purchase commitments | Prepaid Expense | Conversion Of Canadian Dollar To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount                 625.0      
Receive | Merchandise purchase commitments | (Accrued Expense) | Conversion Of Australian Dollar To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount       81.0                
Receive | Merchandise purchase commitments | (Accrued Expense) | Conversion Of Pound To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount       766.0                
Receive | Merchandise purchase commitments | (Accrued Expense) | Conversion Of Zloty To Pound                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | £               £ 107        
Receive | Merchandise purchase commitments | Prepaid Expense / (Accrued Expense) | Conversion Of Australian Dollar To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount                 52.0      
Receive | Merchandise purchase commitments | Prepaid Expense / (Accrued Expense) | Conversion Of Pound To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount                 $ 530.0      
Receive | Merchandise purchase commitments | Prepaid Expense / (Accrued Expense) | Conversion Of Canadian Dollar To US Dollar                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount       $ 620.0                
Receive | Merchandise purchase commitments | Prepaid Expense / (Accrued Expense) | Conversion Of Canadian Dollar To Euro                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | € € 23 € 22                    
Receive | Merchandise purchase commitments | Prepaid Expense / (Accrued Expense) | Conversion Of Zloty To Pound                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | £     £ 83                  
Receive | Merchandise purchase commitments | Prepaid Expense / (Accrued Expense) | Conversion Of US Dollar To Euro                        
Derivatives, Fair Value [Line Items]                        
Derivative notional amount | € € 74 € 82                    
Receive | Minimum | Diesel fuel contracts | Prepaid Expense                        
Derivatives, Fair Value [Line Items]                        
Derivative nonmonetary notional amount | gal / mo 3.2                      
Receive | Minimum | Diesel fuel contracts | (Accrued Expense)                        
Derivatives, Fair Value [Line Items]                        
Derivative nonmonetary notional amount | gal / mo   3.1                    
Receive | Maximum | Diesel fuel contracts | Prepaid Expense                        
Derivatives, Fair Value [Line Items]                        
Derivative nonmonetary notional amount | gal / mo 3.9                      
Receive | Maximum | Diesel fuel contracts | (Accrued Expense)                        
Derivatives, Fair Value [Line Items]                        
Derivative nonmonetary notional amount | gal / mo   3.9