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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	3 Months Ended		12 Months Ended
	May 03, 2025 EUR (€) gal / mo	May 04, 2024 EUR (€) gal / mo	Feb. 01, 2025 EUR (€) gal / mo	May 03, 2025 GBP (£)	May 03, 2025 USD ($)	May 03, 2025 AUD ($)	May 03, 2025 CAD ($)	May 03, 2025 PLN (zł)	Feb. 01, 2025 GBP (£)	Feb. 01, 2025 USD ($)	Feb. 01, 2025 AUD ($)	Feb. 01, 2025 CAD ($)	Feb. 01, 2025 PLN (zł)	May 04, 2024 GBP (£)	May 04, 2024 USD ($)	May 04, 2024 AUD ($)	May 04, 2024 CAD ($)	May 04, 2024 PLN (zł)
Derivatives, Fair Value [Line Items]
Current Asset U.S.$					$ 14.3					$ 53.1					$ 15.5
Current (Liability) U.S.$					(79.5)					(18.1)					(14.5)
Net Fair Value in U.S.$					(65.2)					35.0					1.0
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.$					(16.1)					(9.1)					(8.1)
Net Fair Value in U.S.$					$ (16.1)					$ (9.1)					$ (8.1)
Conversion of Euro to Pound | Intercompany billings in TJX International, primarily merchandise | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.8547												0.8547	0.8547	0.8547	0.8547	0.8547
Current Asset U.S.$															$ 0.0
Current (Liability) U.S.$															(0.6)
Net Fair Value in U.S.$															$ (0.6)
Conversion of Euro to Pound | Intercompany billings in TJX International, primarily merchandise | Prepaid Exp
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.8549		0.8442	0.8549	0.8549	0.8549	0.8549	0.8549	0.8442	0.8442	0.8442	0.8442	0.8442
Current Asset U.S.$					$ 0.8					$ 1.5
Current (Liability) U.S.$					0.0					0.0
Net Fair Value in U.S.$					$ 0.8					$ 1.5
Conversion of Australian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.6346	0.6633	0.6448	0.6346	0.6346	0.6346	0.6346	0.6346	0.6448	0.6448	0.6448	0.6448	0.6448	0.6633	0.6633	0.6633	0.6633	0.6633
Current Asset U.S.$					$ 0.0					$ 1.7					$ 0.3
Current (Liability) U.S.$					(0.9)					(0.1)					(0.3)
Net Fair Value in U.S.$					$ (0.9)					$ 1.6					$ 0.0
Conversion of Pound to US Dollar | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	1.2778	1.2585	1.2742	1.2778	1.2778	1.2778	1.2778	1.2778	1.2742	1.2742	1.2742	1.2742	1.2742	1.2585	1.2585	1.2585	1.2585	1.2585
Current Asset U.S.$					$ 0.5					$ 15.2					$ 2.7
Current (Liability) U.S.$					(24.9)					(1.1)					(1.6)
Net Fair Value in U.S.$					$ (24.4)					$ 14.1					$ 1.1
Conversion of Canadian Dollar to US Dollar | Merchandise purchase commitments | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.7070			0.7070	0.7070	0.7070	0.7070	0.7070
Current Asset U.S.$					$ 0.0
Current (Liability) U.S.$					(18.1)
Net Fair Value in U.S.$					$ (18.1)
Conversion of Canadian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.7400												0.7400	0.7400	0.7400	0.7400	0.7400
Current Asset U.S.$															$ 7.7
Current (Liability) U.S.$															(0.6)
Net Fair Value in U.S.$															$ 7.1
Conversion of Canadian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp
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
Conversion of Canadian Dollar to Euro | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.6546	0.6812	0.6673	0.6546	0.6546	0.6546	0.6546	0.6546	0.6673	0.6673	0.6673	0.6673	0.6673	0.6812	0.6812	0.6812	0.6812	0.6812
Current Asset U.S.$					$ 0.5					$ 0.1					$ 0.1
Current (Liability) U.S.$					(0.0)					(0.0)					(0.0)
Net Fair Value in U.S.$					$ 0.5					$ 0.1					$ 0.1
Conversion of Zloty to Pound | Merchandise purchase commitments | (Accrued Exp)
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)
Conversion of Zloty to Pound | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.1950	0.1971		0.1950	0.1950	0.1950	0.1950	0.1950						0.1971	0.1971	0.1971	0.1971	0.1971
Current Asset U.S.$					$ 0.1										$ 0.0
Current (Liability) U.S.$					(2.4)										(0.7)
Net Fair Value in U.S.$					$ (2.3)										$ (0.7)
Conversion of US Dollar to Euro | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.9204	0.9190	0.9317	0.9204	0.9204	0.9204	0.9204	0.9204	0.9317	0.9317	0.9317	0.9317	0.9317	0.9190	0.9190	0.9190	0.9190	0.9190
Current Asset U.S.$					$ 5.1					$ 0.1					$ 0.1
Current (Liability) U.S.$					(0.2)					(2.9)					(1.2)
Net Fair Value in U.S.$					4.9					(2.8)					(1.1)
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	3.1
Pay | Economic hedges for which hedge accounting was not elected | (Accrued Exp) | Maximum
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo	4.1	4.2	3.9
Pay | Conversion of Euro to Pound | Intercompany billings in TJX International, primarily merchandise | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | €		€ 142
Pay | Conversion of Euro to Pound | Intercompany billings in TJX International, primarily merchandise | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount | €	€ 195		€ 175
Pay | Conversion of Australian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount						$ 93					$ 81					$ 94
Pay | Conversion of Pound to US Dollar | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £				£ 488					£ 416					£ 379
Pay | Conversion of Canadian Dollar to US Dollar | Merchandise purchase commitments | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount							$ 926
Pay | Conversion of Canadian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount																	$ 851
Pay | Conversion of Canadian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount												$ 873
Pay | Conversion of Canadian Dollar to Euro | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount							$ 31					$ 33					$ 37
Pay | Conversion of Zloty to Pound | Merchandise purchase commitments | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | zł													zł 552
Pay | Conversion of Zloty to Pound | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | zł								zł 489										zł 534
Pay | Conversion of US Dollar to Euro | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount					109.0					87.0					133.0
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	3.1
Receive | Economic hedges for which hedge accounting was not elected | (Accrued Exp) | Maximum
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo	4.1	4.2	3.9
Receive | Conversion of Euro to Pound | Intercompany billings in TJX International, primarily merchandise | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £														121
Receive | Conversion of Euro to Pound | Intercompany billings in TJX International, primarily merchandise | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount | £				167					148
Receive | Conversion of Australian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount					59.0					52.0					63.0
Receive | Conversion of Pound to US Dollar | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount					624.0					530.0					477.0
Receive | Conversion of Canadian Dollar to US Dollar | Merchandise purchase commitments | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount					$ 655.0
Receive | Conversion of Canadian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount															$ 630.0
Receive | Conversion of Canadian Dollar to US Dollar | Merchandise purchase commitments | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount										$ 625.0
Receive | Conversion of Canadian Dollar to Euro | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | €	€ 20	€ 25	€ 22
Receive | Conversion of Zloty to Pound | Merchandise purchase commitments | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £									£ 107
Receive | Conversion of Zloty to Pound | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £				£ 95										£ 105
Receive | Conversion of US Dollar to Euro | Merchandise purchase commitments | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | €	€ 101	€ 123	€ 82
Fair value hedges | Conversion of Euro to Pound | Intercompany balances, primarily debt | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.8522			0.8522	0.8522	0.8522	0.8522	0.8522
Current Asset U.S.$					$ 0.0
Current (Liability) U.S.$					(0.5)
Net Fair Value in U.S.$					$ (0.5)
Fair value hedges | Conversion of Euro to Pound | Intercompany balances, primarily debt | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.8622	0.8523						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
Fair value hedges | Conversion of Australian Dollar to US Dollar | Intercompany balances, primarily debt | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.6420	0.6743		0.6420	0.6420	0.6420	0.6420	0.6420						0.6743	0.6743	0.6743	0.6743	0.6743
Current Asset U.S.$					$ 1.4										$ 1.7
Current (Liability) U.S.$					(2.1)										(0.2)
Net Fair Value in U.S.$					$ (0.7)										$ 1.5
Fair value hedges | Conversion of Australian Dollar to US Dollar | Intercompany balances, primarily debt | Prepaid Exp
Derivatives, Fair Value [Line Items]
Blended Contract Rate			0.6420						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
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.$															(0.5)
Net Fair Value in U.S.$															$ (0.5)
Fair value hedges | Conversion of US Dollar to Pound | Intercompany balances, primarily debt | Prepaid Exp
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.8177		0.8177	0.8177	0.8177	0.8177	0.8177	0.8177	0.8177	0.8177	0.8177	0.8177	0.8177
Current Asset U.S.$					$ 5.8					$ 0.8
Current (Liability) U.S.$					0.0					0.0
Net Fair Value in U.S.$					$ 5.8					$ 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	1.2222		1.2222	1.2222	1.2222	1.2222	1.2222	1.2222	1.2222	1.2222	1.2222	1.2222	1.2222
Current Asset U.S.$					$ 0.0					$ 0.0
Current (Liability) U.S.$					(5.3)					(0.9)
Net Fair Value in U.S.$					$ (5.3)					$ (0.9)
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		1.2608												1.2608	1.2608	1.2608	1.2608	1.2608
Current Asset U.S.$															$ 0.8
Current (Liability) U.S.$															(0.3)
Net Fair Value in U.S.$															$ 0.5
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	1.1005	1.0937	1.0852	1.1005	1.1005	1.1005	1.1005	1.1005	1.0852	1.0852	1.0852	1.0852	1.0852	1.0937	1.0937	1.0937	1.0937	1.0937
Current Asset U.S.$					$ 0.1					$ 7.6					$ 2.0
Current (Liability) U.S.$					(9.0)					(0.4)					(0.3)
Net Fair Value in U.S.$					(8.9)					7.2					$ 1.7
Fair value hedges | Conversion of Zloty to Pound | Intercompany balances, primarily debt | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.1973												0.1973	0.1973	0.1973	0.1973	0.1973
Current Asset U.S.$															$ 0.0
Current (Liability) U.S.$															(0.0)
Net Fair Value in U.S.$															0.0
Fair value hedges | Pay | Conversion of Euro to Pound | Intercompany balances, primarily debt | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | €	€ 80
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	€ 79
Fair value hedges | Pay | Conversion of Australian Dollar to US Dollar | Intercompany balances, primarily debt | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount						$ 210										$ 146
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
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 US Dollar to Pound | Intercompany balances, primarily debt | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount					67.0					67.0
Fair value hedges | Pay | Conversion of Pound to US Dollar | Intercompany balances, primarily debt | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £				£ 50					£ 50
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 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 | Pay | Conversion of Zloty to Pound | Intercompany balances, primarily debt | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | zł																		zł 10
Fair value hedges | Receive | Conversion of Euro to Pound | Intercompany balances, primarily debt | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £				68
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 Australian Dollar to US Dollar | Intercompany balances, primarily debt | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount					135.0										98.0
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										135.0
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 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 Pound to US Dollar | Intercompany balances, primarily debt | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount					61.0					61.0
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															126.0
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					$ 220.0					$ 217.0					$ 219.0
Fair value hedges | Receive | Conversion of Zloty to Pound | Intercompany balances, primarily debt | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £														£ 2

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- Definition

Blended contract rate value.

+ References

No definition available.

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- Definition

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+ 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
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-Section 50
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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