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Segment Information - Percentages of Consolidated Revenues by Major Product Category (Details)	12 Months Ended
	Jan. 30, 2021	Feb. 01, 2020	Feb. 02, 2019
Segment Reporting Information [Line Items]
Revenue percentage	100.00%	100.00%	100.00%
Clothing including footwear
Segment Reporting Information [Line Items]
Revenue percentage	46.00%	51.00%	52.00%
Jewelry and accessories
Segment Reporting Information [Line Items]
Revenue percentage	15.00%	16.00%	15.00%
Home fashions
Segment Reporting Information [Line Items]
Revenue percentage	39.00%	33.00%	33.00%

X

- Definition

Segment Reporting Information Sales Revenue Net Percentage

+ References

No definition available.

+ Details

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Namespace Prefix:	tjx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_ProductOrServiceAxis=tjx_ApparelClothingIncludingFootwearMember
Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=tjx_ApparelJewelryAndAccessoriesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=tjx_HomeFashionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: