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Basis of Presentation - Legal Settlements (Details) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Oct. 28, 2017 | Oct. 28, 2017
Basis of Presentation |  |
Improvement in gross margin due to legal settlement (as a percent) | 0.10% | 0.40%

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- Definition Represents the percentage improvement in gross margin resulting from a legal settlement. + References No definition available. + Details
Name: | lzb_PercentageOfGrossMarginImprovedDueToLegalSettlement
Namespace Prefix: | lzb_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration