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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	6 Months Ended		12 Months Ended
	Aug. 03, 2024 EUR (€) gal / mo	Jul. 29, 2023 EUR (€) gal / mo	Feb. 03, 2024 EUR (€) gal / mo	Aug. 03, 2024 GBP (£)	Aug. 03, 2024 USD ($)	Aug. 03, 2024 AUD ($)	Aug. 03, 2024 CAD ($)	Aug. 03, 2024 PLN (zł)	Feb. 03, 2024 GBP (£)	Feb. 03, 2024 USD ($)	Feb. 03, 2024 AUD ($)	Feb. 03, 2024 CAD ($)	Feb. 03, 2024 PLN (zł)	Jul. 29, 2023 GBP (£)	Jul. 29, 2023 USD ($)	Jul. 29, 2023 AUD ($)	Jul. 29, 2023 CAD ($)	Jul. 29, 2023 PLN (zł)
Derivatives, Fair Value [Line Items]
Current Asset U.S.$					$ 19.1					$ 11.5					$ 9.8
Current (Liability) U.S.$					(28.6)					(20.9)					(49.0)
Net Fair Value in U.S.$					(9.5)					(9.4)					(39.2)
Economic hedges for which hedge accounting was not elected | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Current Asset U.S.$					0.0					0.0					0.0
Current (Liability) U.S.$					(15.6)					(7.2)					(2.0)
Net Fair Value in U.S.$					$ (15.6)					$ (7.2)					$ (2.0)
Conversion of Euro to Pound | Intercompany billings in TJX International, primarily merchandise | Prepaid Exp
Derivatives, Fair Value [Line Items]
Blended Contract Rate			0.8604						0.8604	0.8604	0.8604	0.8604	0.8604
Current Asset U.S.$										$ 0.9
Current (Liability) U.S.$										0.0
Net Fair Value in U.S.$										$ 0.9
Conversion of Euro to Pound | Intercompany billings in TJX International, primarily merchandise | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.8408	0.8526		0.8408	0.8408	0.8408	0.8408	0.8408						0.8526	0.8526	0.8526	0.8526	0.8526
Current Asset U.S.$					$ 0.0										$ 0.0
Current (Liability) U.S.$					(2.4)										(0.8)
Net Fair Value in U.S.$					$ (2.4)										$ (0.8)
Conversion of Australian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
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
Conversion of Australian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.6677	0.6810		0.6677	0.6677	0.6677	0.6677	0.6677						0.6810	0.6810	0.6810	0.6810	0.6810
Current Asset U.S.$					$ 1.8										$ 1.3
Current (Liability) U.S.$					0.0										0.0
Net Fair Value in U.S.$					$ 1.8										$ 1.3
Conversion of Pound to US Dollar | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	1.2704	1.2462	1.2549	1.2704	1.2704	1.2704	1.2704	1.2704	1.2549	1.2549	1.2549	1.2549	1.2549	1.2462	1.2462	1.2462	1.2462	1.2462
Current Asset U.S.$					$ 0.8					$ 1.5					$ 0.5
Current (Liability) U.S.$					(5.8)					(5.0)					(15.5)
Net Fair Value in U.S.$					$ (5.0)					$ (3.5)					$ (15.0)
Conversion of Canadian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.7473	0.7408						0.7408	0.7408	0.7408	0.7408	0.7408	0.7473	0.7473	0.7473	0.7473	0.7473
Current Asset U.S.$										$ 1.4					$ 0.2
Current (Liability) U.S.$										(3.6)					(9.0)
Net Fair Value in U.S.$										$ (2.2)					$ (8.8)
Conversion of Canadian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.7340			0.7340	0.7340	0.7340	0.7340	0.7340
Current Asset U.S.$					$ 10.5
Current (Liability) U.S.$					0.0
Net Fair Value in U.S.$					$ 10.5
Conversion of Canadian Dollar to Euro | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.6799												0.6799	0.6799	0.6799	0.6799	0.6799
Current Asset U.S.$															$ 0.1
Current (Liability) U.S.$															(0.3)
Net Fair Value in U.S.$															$ (0.2)
Conversion of Canadian Dollar to Euro | Merchandise purchase commitments | Prepaid Exp
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.6745			0.6745	0.6745	0.6745	0.6745	0.6745
Current Asset U.S.$					$ 0.5
Current (Liability) U.S.$					0.0
Net Fair Value in U.S.$					$ 0.5
Conversion of Canadian Dollar to Euro | Merchandise purchase commitments | (Accrued Exp)
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)
Conversion of Zloty to Pound | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.1970		0.1930	0.1970	0.1970	0.1970	0.1970	0.1970	0.1930	0.1930	0.1930	0.1930	0.1930
Current Asset U.S.$					$ 0.2					$ 0.0
Current (Liability) U.S.$					(1.1)					(3.1)
Net Fair Value in U.S.$					$ (0.9)					$ (3.1)
Conversion of Zloty to Pound | Merchandise purchase commitments | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.1878												0.1878	0.1878	0.1878	0.1878	0.1878
Current Asset U.S.$															$ 0.0
Current (Liability) U.S.$															(4.4)
Net Fair Value in U.S.$															$ (4.4)
Conversion of US Dollar to Euro | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.9200	0.9139	0.9191	0.9200	0.9200	0.9200	0.9200	0.9200	0.9191	0.9191	0.9191	0.9191	0.9191	0.9139	0.9139	0.9139	0.9139	0.9139
Current Asset U.S.$					$ 1.0					$ 0.3					$ 1.3
Current (Liability) U.S.$					(0.1)					(1.0)					(0.3)
Net Fair Value in U.S.$					0.9					(0.7)					1.0
Pay | Economic hedges for which hedge accounting was not elected | (Accrued Exp) | Minimum
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo	3.1	3.0	3.0
Pay | Economic hedges for which hedge accounting was not elected | (Accrued Exp) | Maximum
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo	4.2	3.8	3.8
Pay | Conversion of Euro to Pound | Intercompany billings in TJX International, primarily merchandise | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount | €			€ 130
Pay | Conversion of Euro to Pound | Intercompany billings in TJX International, primarily merchandise | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | €	€ 157	€ 107
Pay | Conversion of Australian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount											$ 82
Pay | Conversion of Australian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount						$ 120										$ 96
Pay | Conversion of Pound to US Dollar | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £				£ 434					£ 353					£ 376
Pay | Conversion of Canadian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount												$ 668					$ 876
Pay | Conversion of Canadian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount							$ 899
Pay | Conversion of Canadian Dollar to Euro | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount																	$ 28
Pay | Conversion of Canadian Dollar to Euro | Merchandise purchase commitments | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount							$ 33
Pay | Conversion of Canadian Dollar to Euro | Merchandise purchase commitments | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount												$ 29
Pay | Conversion of Zloty to Pound | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | zł								zł 554					zł 508
Pay | Conversion of Zloty to Pound | Merchandise purchase commitments | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | zł																		zł 605
Pay | Conversion of US Dollar to Euro | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount					136.0					109.0					110.0
Receive | Economic hedges for which hedge accounting was not elected | (Accrued Exp) | Minimum
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo	3.1	3.0	3.0
Receive | Economic hedges for which hedge accounting was not elected | (Accrued Exp) | Maximum
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo	4.2	3.8	3.8
Receive | Conversion of Euro to Pound | Intercompany billings in TJX International, primarily merchandise | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount | £									112
Receive | Conversion of Euro to Pound | Intercompany billings in TJX International, primarily merchandise | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £				132										91
Receive | Conversion of Australian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount										55.0
Receive | Conversion of Australian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount					80.0										65.0
Receive | Conversion of Pound to US Dollar | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount					551.0					443.0					468.0
Receive | Conversion of Canadian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount										$ 495.0					$ 655.0
Receive | Conversion of Canadian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount					$ 660.0
Receive | Conversion of Canadian Dollar to Euro | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | €		€ 19
Receive | Conversion of Canadian Dollar to Euro | Merchandise purchase commitments | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount | €	€ 22
Receive | Conversion of Canadian Dollar to Euro | Merchandise purchase commitments | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | €			€ 20
Receive | Conversion of Zloty to Pound | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £				£ 109					£ 98
Receive | Conversion of Zloty to Pound | Merchandise purchase commitments | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £														£ 114
Receive | Conversion of US Dollar to Euro | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | €	€ 125	€ 101	€ 100
Fair value hedges | Conversion of Euro to Pound | Intercompany balances, primarily debt | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.8546		0.8622	0.8546	0.8546	0.8546	0.8546	0.8546	0.8622	0.8622	0.8622	0.8622	0.8622
Current Asset U.S.$					$ 0.3					$ 0.1
Current (Liability) U.S.$					(0.7)					(0.1)
Net Fair Value in U.S.$					$ (0.4)					$ 0.0
Fair value hedges | Conversion of Euro to Pound | Intercompany balances, primarily debt | Prepaid Exp
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.8738												0.8738	0.8738	0.8738	0.8738	0.8738
Current Asset U.S.$															$ 0.6
Current (Liability) U.S.$															0.0
Net Fair Value in U.S.$															$ 0.6
Fair value hedges | Conversion of Australian Dollar to US Dollar | Intercompany balances, primarily debt | Prepaid Exp
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.6637	0.6926	0.6751	0.6637	0.6637	0.6637	0.6637	0.6637	0.6751	0.6751	0.6751	0.6751	0.6751	0.6926	0.6926	0.6926	0.6926	0.6926
Current Asset U.S.$					$ 2.2					$ 2.7					$ 3.5
Current (Liability) U.S.$					0.0					0.0					0.0
Net Fair Value in U.S.$					$ 2.2					$ 2.7					$ 3.5
Fair value hedges | Conversion of US Dollar to Pound | Intercompany balances, primarily debt | Prepaid Exp
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.$					$ 0.7										$ 2.0
Current (Liability) U.S.$					0.0										0.0
Net Fair Value in U.S.$					$ 0.7										$ 2.0
Fair value hedges | Conversion of US Dollar to Pound | Intercompany balances, primarily debt | (Accrued Exp)
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)
Fair value hedges | Conversion of Pound to US Dollar | Intercompany balances, primarily debt | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	1.2712			1.2712	1.2712	1.2712	1.2712	1.2712
Current Asset U.S.$					$ 0.5
Current (Liability) U.S.$					(1.6)
Net Fair Value in U.S.$					$ (1.1)
Fair value hedges | Conversion of Pound to US Dollar | Intercompany balances, primarily debt | Prepaid Exp
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
Fair value hedges | Conversion of Pound to US Dollar | Intercompany balances, primarily debt | (Accrued Exp)
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.$															(13.4)
Net Fair Value in U.S.$															$ (13.4)
Fair value hedges | Conversion Of Euro To US Dollar | Intercompany balances, primarily debt | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	1.0949	1.0964	1.0969	1.0949	1.0949	1.0949	1.0949	1.0949	1.0969	1.0969	1.0969	1.0969	1.0969	1.0964	1.0964	1.0964	1.0964	1.0964
Current Asset U.S.$					$ 0.6					$ 3.0					$ 0.3
Current (Liability) U.S.$					(1.3)					(0.3)					(3.3)
Net Fair Value in U.S.$					(0.7)					2.7					(3.0)
Fair value hedges | Pay | Conversion of Euro to Pound | Intercompany balances, primarily debt | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | €	€ 78		€ 78
Fair value hedges | Pay | Conversion of Euro to Pound | Intercompany balances, primarily debt | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount | €		€ 60
Fair value hedges | Pay | Conversion of Australian Dollar to US Dollar | Intercompany balances, primarily debt | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount						$ 210					$ 140					$ 162
Fair value hedges | Pay | Conversion of US Dollar to Pound | Intercompany balances, primarily debt | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount					70.0										69.0
Fair value hedges | Pay | Conversion of US Dollar to Pound | Intercompany balances, primarily debt | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount										70.0
Fair value hedges | Pay | Conversion of Pound to US Dollar | Intercompany balances, primarily debt | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £				£ 100
Fair value hedges | Pay | Conversion of Pound to US Dollar | Intercompany balances, primarily debt | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount | £									£ 100
Fair value hedges | Pay | Conversion of Pound to US Dollar | Intercompany balances, primarily debt | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £														£ 200
Fair value hedges | Pay | Conversion Of Euro To US Dollar | Intercompany balances, primarily debt | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | €	€ 200	€ 200	€ 200
Fair value hedges | Receive | Conversion of Euro to Pound | Intercompany balances, primarily debt | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £				67					67
Fair value hedges | Receive | Conversion of Euro to Pound | Intercompany balances, primarily debt | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount | £														52
Fair value hedges | Receive | Conversion of Australian Dollar to US Dollar | Intercompany balances, primarily debt | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount					139.0					95.0					112.0
Fair value hedges | Receive | Conversion of US Dollar to Pound | Intercompany balances, primarily debt | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount | £				£ 55										£ 55
Fair value hedges | Receive | Conversion of US Dollar to Pound | Intercompany balances, primarily debt | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £									£ 55
Fair value hedges | Receive | Conversion of Pound to US Dollar | Intercompany balances, primarily debt | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount					127.0
Fair value hedges | Receive | Conversion of Pound to US Dollar | Intercompany balances, primarily debt | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount										127.0
Fair value hedges | Receive | Conversion of Pound to US Dollar | Intercompany balances, primarily debt | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount															244.0
Fair value hedges | Receive | Conversion Of Euro To US Dollar | Intercompany balances, primarily debt | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount					$ 219.0					$ 219.0					$ 219.0

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- Definition

Blended contract rate value.

+ References

No definition available.

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- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 815
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-Name Accounting Standards Codification
-Section 50
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-Topic 210
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