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Basis of Presentation and Summary of Accounting Policies - Lease Accounting (Details)	12 Months Ended
	Jan. 28, 2023
Minimum
Lessee, Lease, Description [Line Items]
Operating lease term of possession previous to opening store	30 days
Maximum
Lessee, Lease, Description [Line Items]
Operating lease term of possession previous to opening store	60 days

X

- Definition

Lessee, Operating Lease, Term Of Possession Previous To Opening Store

+ References

No definition available.

+ Details

Name:	tjx_LesseeOperatingLeaseTermOfPossessionPreviousToOpeningStore
Namespace Prefix:	tjx_
Data Type:	xbrli:durationItemType
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_LesseeLeaseDescriptionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: