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Leases - Narrative (Details)	Feb. 01, 2020 extension_period
TJX U.S and Canada
Lessee, Lease, Description [Line Items]
Operating leases, term	10 years
Number of extension periods	1
Minimum | TJX Europe
Lessee, Lease, Description [Line Items]
Operating leases, term	10 years
Minimum | TJX Australia
Lessee, Lease, Description [Line Items]
Operating leases, term	7 years
Maximum | TJX U.S and Canada
Lessee, Lease, Description [Line Items]
Options to extend, term	5 years
Maximum | TJX Europe
Lessee, Lease, Description [Line Items]
Operating leases, term	15 years
Maximum | TJX Australia
Lessee, Lease, Description [Line Items]
Operating leases, term	10 years

X

- Definition

Lessee, Operating Lease, Minimum Number Of Extension Periods

+ References

No definition available.

+ Details

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Namespace Prefix:	tjx_
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Balance Type:	na
Period Type:	instant

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

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

X

- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

+ Details

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Period Type:	instant

X

- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

+ Details

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