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Segment Reporting - Additional Information (Details)	12 Months Ended
	Jan. 31, 2020 Segment Country
Segment Reporting [Abstract]
Number of reportable segments | Segment	1
Number of countries other than the U.S. representing greater than 10% of total net revenue	0
Number of countries other than the U.S. representing greater than 10% of total property and equipment, net	0

X

- Definition

Other countries representing greater than ten percent of net revenue.

+ References

No definition available.

+ Details

Name:	le_OtherCountriesRepresentingGreaterThanTenPercentOfNetRevenue
Namespace Prefix:	le_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Other countries representing greater than ten percent of property and equipment net.

+ References

No definition available.

+ Details

Name:	le_OtherCountriesRepresentingGreaterThanTenPercentOfPropertyAndEquipmentNet
Namespace Prefix:	le_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

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