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. 03, 2024 EUR (€) gal / mo	Jan. 28, 2023 EUR (€) gal / mo	Feb. 03, 2024 GBP (£)	Feb. 03, 2024 USD ($)	Feb. 03, 2024 AUD ($)	Feb. 03, 2024 CAD ($)	Feb. 03, 2024 PLN (zł)	Jan. 28, 2023 GBP (£)	Jan. 28, 2023 USD ($)	Jan. 28, 2023 AUD ($)	Jan. 28, 2023 CAD ($)	Jan. 28, 2023 PLN (zł)
Derivatives, Fair Value [Line Items]
Current Asset U.S.$				$ 11.5					$ 12.5
Current (Liability) U.S.$				(20.9)					(45.1)
Net Fair Value in U.S.$				$ (9.4)					$ (32.6)
Intercompany balances, primarily debt: | Prepaid Expense / (Accrued Expense) | Conversion Of Euro To Pound | Fair value hedges:
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.8622		0.8622	0.8622	0.8622	0.8622	0.8622
Current Asset U.S.$				$ 0.1
Current (Liability) U.S.$				(0.1)
Net Fair Value in U.S.$				$ 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	1.0969	1.0652	1.0969	1.0969	1.0969	1.0969	1.0969	1.0652	1.0652	1.0652	1.0652	1.0652
Current Asset U.S.$				$ 3.0					$ 0.8
Current (Liability) U.S.$				(0.3)					(7.0)
Net Fair Value in U.S.$				$ 2.7					$ (6.2)
Intercompany balances, primarily debt: | Prepaid Expense | Conversion Of Australian Dollar To US Dollar | Fair value hedges:
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.6751		0.6751	0.6751	0.6751	0.6751	0.6751
Current Asset U.S.$				$ 2.7
Current (Liability) U.S.$				0.0
Net Fair Value in U.S.$				$ 2.7
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 Euro To Pound | Fair value hedges:
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.8807						0.8807	0.8807	0.8807	0.8807	0.8807
Current Asset U.S.$									$ 0.0
Current (Liability) U.S.$									(0.3)
Net Fair Value in U.S.$									$ (0.3)
Intercompany balances, primarily debt: | (Accrued Expense) | Conversion Of Australian Dollar To US Dollar | Fair value hedges:
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.7003						0.7003	0.7003	0.7003	0.7003	0.7003
Current Asset U.S.$									$ 0.0
Current (Liability) U.S.$									(2.6)
Net Fair Value in U.S.$									$ (2.6)
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	0.8010	0.7898	0.7898	0.7898	0.7898	0.7898	0.8010	0.8010	0.8010	0.8010	0.8010
Current Asset U.S.$				$ 0.0					$ 0.0
Current (Liability) U.S.$				(0.2)					(0.3)
Net Fair Value in U.S.$				(0.2)					$ (0.3)
Intercompany balances, primarily debt: | (Accrued Expense) | Conversion Of Pound To US Dollar | Fair value hedges:
Derivatives, Fair Value [Line Items]
Blended Contract Rate		1.2191						1.2191	1.2191	1.2191	1.2191	1.2191
Current Asset U.S.$									$ 0.0
Current (Liability) U.S.$									(5.5)
Net Fair Value in U.S.$									(5.5)
Diesel fuel contracts | Prepaid Expense
Derivatives, Fair Value [Line Items]
Current Asset U.S.$									3.9
Current (Liability) U.S.$									0.0
Net Fair Value in U.S.$									$ 3.9
Diesel fuel contracts | (Accrued Expense)
Derivatives, Fair Value [Line Items]
Current Asset U.S.$				0.0
Current (Liability) U.S.$				(7.2)
Net Fair Value in U.S.$				$ (7.2)
Intercompany billings in TJX International, primarily merchandise: | Prepaid Expense | Conversion Of Euro To Pound
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.8604	0.8834	0.8604	0.8604	0.8604	0.8604	0.8604	0.8834	0.8834	0.8834	0.8834	0.8834
Current Asset U.S.$				$ 0.9					$ 0.8
Current (Liability) U.S.$				0.0					0.0
Net Fair Value in U.S.$				$ 0.9					$ 0.8
Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Australian Dollar To US Dollar
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.6620		0.6620	0.6620	0.6620	0.6620	0.6620
Current Asset U.S.$				$ 0.8
Current (Liability) U.S.$				(0.1)
Net Fair Value in U.S.$				$ 0.7
Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Pound To US Dollar
Derivatives, Fair Value [Line Items]
Blended Contract Rate	1.2549	1.1916	1.2549	1.2549	1.2549	1.2549	1.2549	1.1916	1.1916	1.1916	1.1916	1.1916
Current Asset U.S.$				$ 1.5					$ 0.1
Current (Liability) U.S.$				(5.0)					(15.4)
Net Fair Value in U.S.$				$ (3.5)					$ (15.3)
Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Canadian Dollar To US Dollar
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.7408	0.7449	0.7408	0.7408	0.7408	0.7408	0.7408	0.7449	0.7449	0.7449	0.7449	0.7449
Current Asset U.S.$				$ 1.4					$ 2.2
Current (Liability) U.S.$				(3.6)					(7.1)
Net Fair Value in U.S.$				$ (2.2)					$ (4.9)
Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Canadian Dollar To Euro
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.7064						0.7064	0.7064	0.7064	0.7064	0.7064
Current Asset U.S.$									$ 0.4
Current (Liability) U.S.$									(0.0)
Net Fair Value in U.S.$									$ 0.4
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	0.9191		0.9191	0.9191	0.9191	0.9191	0.9191
Current Asset U.S.$				$ 0.3
Current (Liability) U.S.$				(1.0)
Net Fair Value in U.S.$				$ (0.7)
Merchandise purchase commitments: | Prepaid Expense | Conversion Of US Dollar To Euro
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.9634						0.9634	0.9634	0.9634	0.9634	0.9634
Current Asset U.S.$									$ 4.3
Current (Liability) U.S.$									0.0
Net Fair Value in U.S.$									$ 4.3
Merchandise purchase commitments: | (Accrued Expense) | Conversion Of Australian Dollar To US Dollar
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.6819						0.6819	0.6819	0.6819	0.6819	0.6819
Current Asset U.S.$									$ 0.0
Current (Liability) U.S.$									(3.3)
Net Fair Value in U.S.$									$ (3.3)
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		0.1788						0.1788	0.1788	0.1788	0.1788	0.1788
Current Asset U.S.$									$ 0.0
Current (Liability) U.S.$									(3.6)
Net Fair Value in U.S.$									(3.6)
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 | €	€ 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					$ 140
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 Euro To Pound | Fair value hedges:
Derivatives, Fair Value [Line Items]
Derivative notional amount | €		60
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										$ 150
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					69.0
Pay | Intercompany balances, primarily debt: | (Accrued Expense) | Conversion Of Pound To US Dollar | Fair value hedges:
Derivatives, Fair Value [Line Items]
Derivative notional amount | £								£ 200
Pay | Intercompany billings in TJX International, primarily merchandise: | Prepaid Expense | Conversion Of Euro To Pound
Derivatives, Fair Value [Line Items]
Derivative notional amount | €	€ 130	€ 146
Pay | Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Australian Dollar To US Dollar
Derivatives, Fair Value [Line Items]
Derivative notional amount					$ 82
Pay | Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Pound To US Dollar
Derivatives, Fair Value [Line Items]
Derivative notional amount | £			353					299
Pay | Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Canadian Dollar To US Dollar
Derivatives, Fair Value [Line Items]
Derivative notional amount						$ 668					$ 705
Pay | Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Canadian Dollar To Euro
Derivatives, Fair Value [Line Items]
Derivative notional amount											$ 23
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				109.0
Pay | Merchandise purchase commitments: | Prepaid Expense | Conversion Of US Dollar To Euro
Derivatives, Fair Value [Line Items]
Derivative notional amount									85.0
Pay | Merchandise purchase commitments: | (Accrued Expense) | Conversion Of Australian Dollar To US Dollar
Derivatives, Fair Value [Line Items]
Derivative notional amount										$ 104
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 507
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	3.0
Pay | Maximum | Diesel fuel contracts | Prepaid Expense
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo		3.6
Pay | Maximum | Diesel fuel contracts | (Accrued Expense)
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo	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
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				219.0					213.0
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				95.0
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 Euro To Pound | Fair value hedges:
Derivatives, Fair Value [Line Items]
Derivative notional amount | £								53
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									105.0
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					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									244.0
Receive | Intercompany billings in TJX International, primarily merchandise: | Prepaid Expense | Conversion Of Euro To Pound
Derivatives, Fair Value [Line Items]
Derivative notional amount | £			112					129
Receive | Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Australian Dollar To US Dollar
Derivatives, Fair Value [Line Items]
Derivative notional amount				55.0
Receive | Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Pound To US Dollar
Derivatives, Fair Value [Line Items]
Derivative notional amount				443.0					356.0
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					525.0
Receive | Merchandise purchase commitments: | Prepaid Expense / (Accrued Expense) | Conversion Of Canadian Dollar To Euro
Derivatives, Fair Value [Line Items]
Derivative notional amount | €		€ 16
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 | €	€ 100
Receive | Merchandise purchase commitments: | Prepaid Expense | Conversion Of US Dollar To Euro
Derivatives, Fair Value [Line Items]
Derivative notional amount | €		€ 82
Receive | Merchandise purchase commitments: | (Accrued Expense) | Conversion Of Australian Dollar To US Dollar
Derivatives, Fair Value [Line Items]
Derivative notional amount									$ 71.0
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 | £								£ 91
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	3.0
Receive | Maximum | Diesel fuel contracts | Prepaid Expense
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo		3.6
Receive | Maximum | Diesel fuel contracts | (Accrued Expense)
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo	3.8