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Segment Information - Additional Information (Detail)	12 Months Ended
	Jan. 31, 2015 Segment
Segment Reporting Information [Line Items]
Number of business segments	4us-gaap_NumberOfOperatingSegments
United States
Segment Reporting Information [Line Items]
Number of business segments	2us-gaap_NumberOfOperatingSegments / us-gaap_StatementBusinessSegmentsAxis = country_US
TJX Canada And Europe
Segment Reporting Information [Line Items]
Percentage of segment sales	24.00%tjx_PercentageOfSegmentSales / us-gaap_StatementBusinessSegmentsAxis = tjx_TJXCanadaAndEuropeMember
Percentage of segment profit	19.00%tjx_PercentageOfSegmentProfit / us-gaap_StatementBusinessSegmentsAxis = tjx_TJXCanadaAndEuropeMember
Percentage of segment consolidated assets	23.00%tjx_PercentageOfSegmentConsolidatedAssets / us-gaap_StatementBusinessSegmentsAxis = tjx_TJXCanadaAndEuropeMember

X

- Definition

Percentage Of Segment Consolidated Assets

+ References

No definition available.

+ Details

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

X

- Definition

Percentage Of Segment Profit

+ References

No definition available.

+ Details

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

X

- Definition

Percentage Of Segment Sales

+ References

No definition available.

+ Details

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

X

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfOperatingSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Details

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

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=tjx_TJXCanadaAndEuropeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: