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Stock-Based Compensation - Summary of Performance Awards Activity (Parenthetical) (Details)	3 Months Ended
	Apr. 30, 2021
Performance Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance shares target percentage	100.00%

X

- Definition

Performance shares target percentage.

+ References

No definition available.

+ Details

Name:	le_PerformanceSharesTargetPercentage
Namespace Prefix:	le_
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

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

X

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_PerformanceSharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: