Financial Instruments - Summary of Derivative Financial Instruments, Related Fair Value and Balance Sheet Classification (Details) € in Thousands, £ in Thousands, zł in Thousands, $ in Thousands, $ in Thousands, $ in Thousands, gal / mo in Millions	6 Months Ended		12 Months Ended
	Aug. 03, 2019 CAD ($) gal / mo	Aug. 04, 2018 CAD ($) gal / mo	Feb. 02, 2019 CAD ($) gal / mo	Aug. 03, 2019 AUD ($)	Aug. 03, 2019 PLN (zł)	Aug. 03, 2019 GBP (£)	Aug. 03, 2019 EUR (€)	Aug. 03, 2019 USD ($)	Feb. 02, 2019 AUD ($)	Feb. 02, 2019 PLN (zł)	Feb. 02, 2019 GBP (£)	Feb. 02, 2019 EUR (€)	Feb. 02, 2019 USD ($)	Aug. 04, 2018 AUD ($)	Aug. 04, 2018 PLN (zł)	Aug. 04, 2018 GBP (£)	Aug. 04, 2018 EUR (€)	Aug. 04, 2018 USD ($)
Derivatives, Fair Value [Line Items]
Current Asset U.S.$								$ 24,241					$ 8,136					$ 42,960
Current (Liability) U.S.$								(26,198)					(11,201)					(14,191)
Net fair value in U.S.$								(1,957)					(3,065)					28,769
Diesel fuel contracts | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Current Asset U.S.$								0					0
Current (Liability) U.S.$								(6,575)					(3,786)
Net fair value in U.S.$								$ (6,575)					$ (3,786)
Diesel fuel contracts | Prepaid Exp
Derivatives, Fair Value [Line Items]
Current Asset U.S.$																		6,864
Current (Liability) U.S.$																		0
Net fair value in U.S.$																		$ 6,864
Conversion Of Zloty To Pound | Merchandise purchase commitments: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.2053	0.2041		0.2053	0.2053	0.2053	0.2053	0.2053						0.2041	0.2041	0.2041	0.2041	0.2041
Current Asset U.S.$								$ 0										$ 0
Current (Liability) U.S.$								(3,267)										(1,889)
Net fair value in U.S.$								$ (3,267)										$ (1,889)
Conversion Of Zloty To Pound | Merchandise purchase commitments: | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate			0.2055						0.2055	0.2055	0.2055	0.2055	0.2055
Current Asset U.S.$													$ 707
Current (Liability) U.S.$													(86)
Net fair value in U.S.$													$ 621
Conversion Of Euro To Pound | Intercompany billings in TJX International, primarily merchandise related: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.8992	0.8841		0.8992	0.8992	0.8992	0.8992	0.8992						0.8841	0.8841	0.8841	0.8841	0.8841
Current Asset U.S.$								$ 0										$ 0
Current (Liability) U.S.$								(1,687)										(672)
Net fair value in U.S.$								$ (1,687)										$ (672)
Conversion Of Euro To Pound | Intercompany billings in TJX International, primarily merchandise related: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Blended Contract Rate			0.8977						0.8977	0.8977	0.8977	0.8977	0.8977
Current Asset U.S.$													$ 1,300
Current (Liability) U.S.$													0
Net fair value in U.S.$													$ 1,300
Conversion Of Australian Dollar To US Dollar | Merchandise purchase commitments: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.7032			0.7032	0.7032	0.7032	0.7032	0.7032
Current Asset U.S.$								$ 690
Current (Liability) U.S.$								0
Net fair value in U.S.$								$ 690
Conversion Of Australian Dollar To US Dollar | Merchandise purchase commitments: | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.7478	0.7241						0.7241	0.7241	0.7241	0.7241	0.7241	0.7478	0.7478	0.7478	0.7478	0.7478
Current Asset U.S.$													$ 97					$ 229
Current (Liability) U.S.$													(213)					(16)
Net fair value in U.S.$													$ (116)					$ 213
Conversion Of US Dollar To Pound | Merchandise purchase commitments: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.7960	0.7560		0.7960	0.7960	0.7960	0.7960	0.7960						0.7560	0.7560	0.7560	0.7560	0.7560
Current Asset U.S.$								$ 0										$ 0
Current (Liability) U.S.$								(120)										(49)
Net fair value in U.S.$								$ (120)										$ (49)
Conversion Of Zloty To Euro | Lease liability in TJX International: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.2348			0.2348	0.2348	0.2348	0.2348	0.2348
Current Asset U.S.$								$ 866
Current (Liability) U.S.$								0
Net fair value in U.S.$								$ 866
Conversion Of Canadian Dollar To US Dollar | Merchandise purchase commitments: | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.7536	0.7741	0.7583	0.7536	0.7536	0.7536	0.7536	0.7536	0.7583	0.7583	0.7583	0.7583	0.7583	0.7741	0.7741	0.7741	0.7741	0.7741
Current Asset U.S.$								$ 1,323					$ 1,239					$ 4,913
Current (Liability) U.S.$								(4,800)					(4,741)					(2,940)
Net fair value in U.S.$								$ (3,477)					$ (3,502)					$ 1,973
Conversion Of Canadian Dollar To Euro | Merchandise purchase commitments: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.6663	0.6491	0.6581	0.6663	0.6663	0.6663	0.6663	0.6663	0.6581	0.6581	0.6581	0.6581	0.6581	0.6491	0.6491	0.6491	0.6491	0.6491
Current Asset U.S.$								$ 0					$ 0					$ 0
Current (Liability) U.S.$								(592)					(248)					(610)
Net fair value in U.S.$								$ (592)					$ (248)					$ (610)
Conversion Of Pound To US Dollar | Merchandise purchase commitments: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Blended Contract Rate		1.3876												1.3876	1.3876	1.3876	1.3876	1.3876
Current Asset U.S.$																		$ 28,329
Current (Liability) U.S.$																		0
Net fair value in U.S.$																		$ 28,329
Conversion Of Pound To US Dollar | Merchandise purchase commitments: | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	1.2874		1.3247	1.2874	1.2874	1.2874	1.2874	1.2874	1.3247	1.3247	1.3247	1.3247	1.3247
Current Asset U.S.$								$ 20,418					$ 3,459
Current (Liability) U.S.$								(12)					(1,466)
Net fair value in U.S.$								$ 20,406					$ 1,993
Conversion Of US Dollar To Euro | Merchandise purchase commitments: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.8787	0.8332		0.8787	0.8787	0.8787	0.8787	0.8787						0.8332	0.8332	0.8332	0.8332	0.8332
Current Asset U.S.$								$ 0										$ 0
Current (Liability) U.S.$								(1,567)										(2,336)
Net fair value in U.S.$								(1,567)										(2,336)
Conversion Of US Dollar To Euro | Merchandise purchase commitments: | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate			0.8682						0.8682	0.8682	0.8682	0.8682	0.8682
Current Asset U.S.$													$ 115
Current (Liability) U.S.$													(207)
Net fair value in U.S.$													(92)
Pay | Diesel fuel contracts | (Accrued Exp) | Minimum
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo	2.7		2.7
Pay | Diesel fuel contracts | (Accrued Exp) | Maximum
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo	3.3		3.3
Pay | Diesel fuel contracts | Prepaid Exp | Minimum
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo		2.3
Pay | Diesel fuel contracts | Prepaid Exp | Maximum
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo		3.0
Pay | Conversion Of Zloty To Pound | Merchandise purchase commitments: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | zł					zł 418,012										zł 355,038
Pay | Conversion Of Zloty To Pound | Merchandise purchase commitments: | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | zł										zł 280,167
Pay | Conversion Of Euro To Pound | Intercompany billings in TJX International, primarily merchandise related: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | €							€ 89,000										€ 76,000
Pay | Conversion Of Euro To Pound | Intercompany billings in TJX International, primarily merchandise related: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount | €												€ 46,600
Pay | Conversion Of Australian Dollar To US Dollar | Merchandise purchase commitments: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount				$ 32,229
Pay | Conversion Of Australian Dollar To US Dollar | Merchandise purchase commitments: | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount									$ 51,043					$ 33,867
Pay | Conversion Of US Dollar To Pound | Merchandise purchase commitments: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount								3,834										3,274
Pay | Conversion Of Zloty To Euro | Lease liability in TJX International: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount | zł					zł 330,044
Pay | Conversion Of Canadian Dollar To US Dollar | Merchandise purchase commitments: | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount	$ 702,924	$ 621,719	$ 546,083
Pay | Conversion Of Canadian Dollar To Euro | Merchandise purchase commitments: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount	$ 38,119	$ 35,433	$ 31,455
Pay | Conversion Of Pound To US Dollar | Merchandise purchase commitments: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount | £																£ 351,964
Pay | Conversion Of Pound To US Dollar | Merchandise purchase commitments: | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £						£ 313,490					£ 173,624
Pay | Conversion Of US Dollar To Euro | Merchandise purchase commitments: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount								79,010										74,329
Pay | Conversion Of US Dollar To Euro | Merchandise purchase commitments: | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount													56,847
Receive | Diesel fuel contracts | (Accrued Exp) | Minimum
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo	2.7		2.7
Receive | Diesel fuel contracts | (Accrued Exp) | Maximum
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo	3.3		3.3
Receive | Diesel fuel contracts | Prepaid Exp | Minimum
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo		2.3
Receive | Diesel fuel contracts | Prepaid Exp | Maximum
Derivatives, Fair Value [Line Items]
Derivative nonmonetary notional amount | gal / mo		3.0
Receive | Conversion Of Zloty To Pound | Merchandise purchase commitments: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £						85,810										72,479
Receive | Conversion Of Zloty To Pound | Merchandise purchase commitments: | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £											57,586
Receive | Conversion Of Euro To Pound | Intercompany billings in TJX International, primarily merchandise related: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £						80,029										67,192
Receive | Conversion Of Euro To Pound | Intercompany billings in TJX International, primarily merchandise related: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount | £											£ 41,835
Receive | Conversion Of Australian Dollar To US Dollar | Merchandise purchase commitments: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount								22,665
Receive | Conversion Of Australian Dollar To US Dollar | Merchandise purchase commitments: | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount													36,961					25,327
Receive | Conversion Of US Dollar To Pound | Merchandise purchase commitments: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £						£ 3,052										£ 2,475
Receive | Conversion Of Zloty To Euro | Lease liability in TJX International: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount | €							77,479
Receive | Conversion Of Canadian Dollar To US Dollar | Merchandise purchase commitments: | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount								529,750					414,100					481,300
Receive | Conversion Of Canadian Dollar To Euro | Merchandise purchase commitments: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | €							25,400					20,700					23,000
Receive | Conversion Of Pound To US Dollar | Merchandise purchase commitments: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount																		$ 488,400
Receive | Conversion Of Pound To US Dollar | Merchandise purchase commitments: | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount								$ 403,600					$ 230,000
Receive | Conversion Of US Dollar To Euro | Merchandise purchase commitments: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | €							€ 69,427										€ 61,929
Receive | Conversion Of US Dollar To Euro | Merchandise purchase commitments: | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | €												€ 49,355
Fair value hedges | Conversion Of Zloty To Pound | Intercompany balances, primarily debt and related interest: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.2040			0.2040	0.2040	0.2040	0.2040	0.2040
Current Asset U.S.$								$ 0
Current (Liability) U.S.$								(585)
Net fair value in U.S.$								$ (585)
Fair value hedges | Conversion Of Zloty To Pound | Intercompany balances, primarily debt and related interest: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.2095	0.2037						0.2037	0.2037	0.2037	0.2037	0.2037	0.2095	0.2095	0.2095	0.2095	0.2095
Current Asset U.S.$													$ 56					$ 141
Current (Liability) U.S.$													0					0
Net fair value in U.S.$													$ 56					$ 141
Fair value hedges | Conversion Of Euro To Pound | Intercompany balances, primarily debt and related interest: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.8858	0.8873		0.8858	0.8858	0.8858	0.8858	0.8858						0.8873	0.8873	0.8873	0.8873	0.8873
Current Asset U.S.$								$ 0										$ 0
Current (Liability) U.S.$								(2,208)										(518)
Net fair value in U.S.$								$ (2,208)										$ (518)
Fair value hedges | Conversion Of Euro To Pound | Intercompany balances, primarily debt and related interest: | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate			0.8858						0.8858	0.8858	0.8858	0.8858	0.8858
Current Asset U.S.$													$ 126
Current (Liability) U.S.$													(140)
Net fair value in U.S.$													$ (14)
Fair value hedges | Conversion Of Australian Dollar To US Dollar | Intercompany balances, primarily debt and related interest: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate			0.7161						0.7161	0.7161	0.7161	0.7161	0.7161
Current Asset U.S.$													$ 0
Current (Liability) U.S.$													(314)
Net fair value in U.S.$													$ (314)
Fair value hedges | Conversion Of Australian Dollar To US Dollar | Intercompany balances, primarily debt and related interest: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.7062			0.7062	0.7062	0.7062	0.7062	0.7062
Current Asset U.S.$								$ 944
Current (Liability) U.S.$								0
Net fair value in U.S.$								$ 944
Fair value hedges | Conversion Of US Dollar To Pound | Intercompany balances, primarily debt and related interest: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate	0.7637	0.7136		0.7637	0.7637	0.7637	0.7637	0.7637						0.7136	0.7136	0.7136	0.7136	0.7136
Current Asset U.S.$								$ 0										$ 0
Current (Liability) U.S.$								(4,785)										(5,097)
Net fair value in U.S.$								(4,785)										$ (5,097)
Fair value hedges | Conversion Of US Dollar To Pound | Intercompany balances, primarily debt and related interest: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Blended Contract Rate			0.7637						0.7637	0.7637	0.7637	0.7637	0.7637
Current Asset U.S.$													$ 1,037
Current (Liability) U.S.$													0
Net fair value in U.S.$													1,037
Fair value hedges | Conversion of Pound To Canadian Dollar | Intercompany balances, primarily debt and related interest: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Blended Contract Rate		1.8013												1.8013	1.8013	1.8013	1.8013	1.8013
Current Asset U.S.$																		$ 2,484
Current (Liability) U.S.$																		0
Net fair value in U.S.$																		$ 2,484
Fair value hedges | Conversion Of Australian Dollar To Pound | Intercompany balances, primarily debt and related interest: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Blended Contract Rate		0.5631												0.5631	0.5631	0.5631	0.5631	0.5631
Current Asset U.S.$																		$ 0
Current (Liability) U.S.$																		(64)
Net fair value in U.S.$																		(64)
Fair value hedges | Pay | Conversion Of Zloty To Pound | Intercompany balances, primarily debt and related interest: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | zł					zł 64,000
Fair value hedges | Pay | Conversion Of Zloty To Pound | Intercompany balances, primarily debt and related interest: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount | zł										zł 59,000					zł 67,000
Fair value hedges | Pay | Conversion Of Euro To Pound | Intercompany balances, primarily debt and related interest: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | €							€ 55,950										€ 53,950
Fair value hedges | Pay | Conversion Of Euro To Pound | Intercompany balances, primarily debt and related interest: | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | €												€ 55,950
Fair value hedges | Pay | Conversion Of Australian Dollar To US Dollar | Intercompany balances, primarily debt and related interest: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount									$ 30,000
Fair value hedges | Pay | Conversion Of Australian Dollar To US Dollar | Intercompany balances, primarily debt and related interest: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount				$ 40,000
Fair value hedges | Pay | Conversion Of US Dollar To Pound | Intercompany balances, primarily debt and related interest: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount								72,020										$ 77,079
Fair value hedges | Pay | Conversion Of US Dollar To Pound | Intercompany balances, primarily debt and related interest: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount													72,020
Fair value hedges | Pay | Conversion of Pound To Canadian Dollar | Intercompany balances, primarily debt and related interest: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount | zł															zł 30,000
Fair value hedges | Pay | Conversion Of Australian Dollar To Pound | Intercompany balances, primarily debt and related interest: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount														$ 10,000
Fair value hedges | Receive | Conversion Of Zloty To Pound | Intercompany balances, primarily debt and related interest: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £						£ 13,055
Fair value hedges | Receive | Conversion Of Zloty To Pound | Intercompany balances, primarily debt and related interest: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount | £											£ 12,021					£ 14,035
Fair value hedges | Receive | Conversion Of Euro To Pound | Intercompany balances, primarily debt and related interest: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £						49,560										47,868
Fair value hedges | Receive | Conversion Of Euro To Pound | Intercompany balances, primarily debt and related interest: | Prepaid Exp / (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £											49,560
Fair value hedges | Receive | Conversion Of Australian Dollar To US Dollar | Intercompany balances, primarily debt and related interest: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount													$ 21,483
Fair value hedges | Receive | Conversion Of Australian Dollar To US Dollar | Intercompany balances, primarily debt and related interest: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount								$ 28,249
Fair value hedges | Receive | Conversion Of US Dollar To Pound | Intercompany balances, primarily debt and related interest: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £						£ 55,000										55,000
Fair value hedges | Receive | Conversion Of US Dollar To Pound | Intercompany balances, primarily debt and related interest: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount | £											£ 55,000
Fair value hedges | Receive | Conversion of Pound To Canadian Dollar | Intercompany balances, primarily debt and related interest: | Prepaid Exp
Derivatives, Fair Value [Line Items]
Derivative notional amount		$ 54,038
Fair value hedges | Receive | Conversion Of Australian Dollar To Pound | Intercompany balances, primarily debt and related interest: | (Accrued Exp)
Derivatives, Fair Value [Line Items]
Derivative notional amount | £																£ 5,631