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Pension Plans and Other Retirement Benefits - Additional Information (Detail) $ in Millions	3 Months Ended
	May 04, 2019 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Minimum percentage of pension liability	80.00%
Unfunded Plan
Defined Benefit Plan Disclosure [Line Items]
Expected future employer contributions, remainder of fiscal 2020	$ 4.8

X

- Definition

Minimum percentage of pension liability under pension protection act.

+ 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

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X

- Definition

Amount of contributions expected to be received by defined benefit plan from employer in fiscal year. Excludes contributions paid by employer in current fiscal year.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920

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- Details

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Namespace Prefix:
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Period Type: