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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
	Feb. 01, 2025 EUR (€) gal / mo	Feb. 03, 2024 EUR (€) gal / mo	Feb. 01, 2025 GBP (£)	Feb. 01, 2025 USD ($)	Feb. 01, 2025 AUD ($)	Feb. 01, 2025 CAD ($)	Feb. 01, 2025 PLN (zł)	Feb. 03, 2024 GBP (£)	Feb. 03, 2024 USD ($)	Feb. 03, 2024 AUD ($)	Feb. 03, 2024 CAD ($)	Feb. 03, 2024 PLN (zł)
Derivatives, Fair Value [Line Items]
Current Asset U.S.$				$ 53.1					$ 11.5
Current (Liability) U.S.$				(18.1)					(20.9)
Net Fair Value in U.S.$				$ 35.0					$ (9.4)
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	0.8622	0.8523	0.8523	0.8523	0.8523	0.8523	0.8622	0.8622	0.8622	0.8622	0.8622
Current Asset U.S.$				$ 0.7					$ 0.1
Current (Liability) U.S.$				(0.1)					(0.1)
Net Fair Value in U.S.$				$ 0.6					$ 0.0
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	1.0969	1.0852	1.0852	1.0852	1.0852	1.0852	1.0969	1.0969	1.0969	1.0969	1.0969
Current Asset U.S.$				$ 7.6					$ 3.0
Current (Liability) U.S.$				(0.4)					(0.3)
Net Fair Value in U.S.$				$ 7.2					$ 2.7
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	0.6751	0.6420	0.6420	0.6420	0.6420	0.6420	0.6751	0.6751	0.6751	0.6751	0.6751
Current Asset U.S.$				$ 3.5					$ 2.7
Current (Liability) U.S.$				0.0					0.0
Net Fair Value in U.S.$				$ 3.5					$ 2.7
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: | Prepaid Expense | Conversion Of Pound To US Dollar | Fair value hedges:
Derivatives, Fair Value [Line Items]
Blended Contract Rate		1.2727						1.2727	1.2727	1.2727	1.2727	1.2727
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 US Dollar To Pound | Fair value hedges:
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.7898						0.7898	0.7898	0.7898	0.7898	0.7898
Current Asset U.S.$									$ 0.0
Current (Liability) U.S.$									(0.2)
Net Fair Value in U.S.$									(0.2)
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)
Diesel fuel contracts | (Accrued Expense)
Derivatives, Fair Value [Line Items]
Current Asset U.S.$				0.0					0.0
Current (Liability) U.S.$				(9.1)					(7.2)
Net Fair Value in U.S.$				$ (9.1)					$ (7.2)
Intercompany billings in TJX International, primarily merchandise: | Prepaid Expense | Conversion Of Euro To Pound
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.8442	0.8604	0.8442	0.8442	0.8442	0.8442	0.8442	0.8604	0.8604	0.8604	0.8604	0.8604
Current Asset U.S.$				$ 1.5					$ 0.9
Current (Liability) U.S.$				0.0					0.0
Net Fair Value in U.S.$				$ 1.5					$ 0.9
Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Australian Dollar To US Dollar
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.6448	0.6620	0.6448	0.6448	0.6448	0.6448	0.6448	0.6620	0.6620	0.6620	0.6620	0.6620
Current Asset U.S.$				$ 1.7					$ 0.8
Current (Liability) U.S.$				(0.1)					(0.1)
Net Fair Value in U.S.$				$ 1.6					$ 0.7
Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Pound To US Dollar
Derivatives, Fair Value [Line Items]
Blended Contract Rate	1.2742	1.2549	1.2742	1.2742	1.2742	1.2742	1.2742	1.2549	1.2549	1.2549	1.2549	1.2549
Current Asset U.S.$				$ 15.2					$ 1.5
Current (Liability) U.S.$				(1.1)					(5.0)
Net Fair Value in U.S.$				$ 14.1					$ (3.5)
Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Canadian Dollar To US Dollar
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.7408						0.7408	0.7408	0.7408	0.7408	0.7408
Current Asset U.S.$									$ 1.4
Current (Liability) U.S.$									(3.6)
Net Fair Value in U.S.$									$ (2.2)
Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Canadian Dollar To Euro
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.6673		0.6673	0.6673	0.6673	0.6673	0.6673
Current Asset U.S.$				$ 0.1
Current (Liability) U.S.$				(0.0)
Net Fair Value in U.S.$				$ 0.1
Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Zloty To Pound
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.1930						0.1930	0.1930	0.1930	0.1930	0.1930
Current Asset U.S.$									$ 0.0
Current (Liability) U.S.$									(3.1)
Net Fair Value in U.S.$									$ (3.1)
Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of US Dollar To Euro
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.9317	0.9191	0.9317	0.9317	0.9317	0.9317	0.9317	0.9191	0.9191	0.9191	0.9191	0.9191
Current Asset U.S.$				$ 0.1					$ 0.3
Current (Liability) U.S.$				(2.9)					(1.0)
Net Fair Value in U.S.$				$ (2.8)					$ (0.7)
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 Canadian Dollar To Euro
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.6797						0.6797	0.6797	0.6797	0.6797	0.6797
Current Asset U.S.$									$ 0.0
Current (Liability) U.S.$									(0.3)
Net Fair Value in U.S.$									(0.3)
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)
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	€ 78
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	200
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					$ 140
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: | Prepaid Expense | Conversion Of Pound To US Dollar | Fair value hedges:
Derivatives, Fair Value [Line Items]
Derivative notional amount | £								£ 100
Pay | Intercompany balances, primarily debt: | (Accrued Expense) | Conversion Of US Dollar To Pound | Fair value hedges:
Derivatives, Fair Value [Line Items]
Derivative notional amount									70.0
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 billings in TJX International, primarily merchandise: | Prepaid Expense | Conversion Of Euro To Pound
Derivatives, Fair Value [Line Items]
Derivative notional amount | €	€ 175	€ 130
Pay | Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Australian Dollar To US Dollar
Derivatives, Fair Value [Line Items]
Derivative notional amount					$ 81					$ 82
Pay | Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Pound To US Dollar
Derivatives, Fair Value [Line Items]
Derivative notional amount | £			416					353
Pay | Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Canadian Dollar To US Dollar
Derivatives, Fair Value [Line Items]
Derivative notional amount											$ 668
Pay | Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Canadian Dollar To Euro
Derivatives, Fair Value [Line Items]
Derivative notional amount						$ 33
Pay | Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Zloty To Pound
Derivatives, Fair Value [Line Items]
Derivative notional amount | zł												zł 508
Pay | Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of US Dollar To Euro
Derivatives, Fair Value [Line Items]
Derivative notional amount				87.0					109.0
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 Canadian Dollar To Euro
Derivatives, Fair Value [Line Items]
Derivative notional amount											$ 29
Pay | Merchandise purchase commitments: | (Accrued Expense) | Conversion Of Zloty To Pound
Derivatives, Fair Value [Line Items]
Derivative notional amount | zł							zł 552
Pay | Minimum | Diesel fuel contracts | (Accrued Expense)
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo	3.1	3.0
Pay | Maximum | Diesel fuel contracts | (Accrued Expense)
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo	3.9	3.8
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					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					219.0
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					95.0
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: | Prepaid Expense | Conversion Of Pound To US Dollar | Fair value hedges:
Derivatives, Fair Value [Line Items]
Derivative notional amount									127.0
Receive | Intercompany balances, primarily debt: | (Accrued 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 Pound To US Dollar | Fair value hedges:
Derivatives, Fair Value [Line Items]
Derivative notional amount				61.0
Receive | Intercompany billings in TJX International, primarily merchandise: | Prepaid Expense | Conversion Of Euro To Pound
Derivatives, Fair Value [Line Items]
Derivative notional amount | £			148					112
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					55.0
Receive | Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Pound To US Dollar
Derivatives, Fair Value [Line Items]
Derivative notional amount				530.0					443.0
Receive | Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Canadian Dollar To US Dollar
Derivatives, Fair Value [Line Items]
Derivative notional amount									$ 495.0
Receive | Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Canadian Dollar To Euro
Derivatives, Fair Value [Line Items]
Derivative notional amount | €	€ 22
Receive | Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Zloty To Pound
Derivatives, Fair Value [Line Items]
Derivative notional amount | £								£ 98
Receive | Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of US Dollar To Euro
Derivatives, Fair Value [Line Items]
Derivative notional amount | €	€ 82	€ 100
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 Canadian Dollar To Euro
Derivatives, Fair Value [Line Items]
Derivative notional amount | €		€ 20
Receive | Merchandise purchase commitments: | (Accrued Expense) | Conversion Of Zloty To Pound
Derivatives, Fair Value [Line Items]
Derivative notional amount | £			£ 107
Receive | Minimum | Diesel fuel contracts | (Accrued Expense)
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo	3.1	3.0
Receive | Maximum | Diesel fuel contracts | (Accrued Expense)
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo	3.9	3.8

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