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Basis of Presentation - Variable Interest Entities (Details) - Variable interest entities, not primary beneficiary | Oct. 27, 2018 company
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Investments |
Preferred share investments, number of privately-held companies | 2
Preferred share investments with common share warrant, number of privately-held companies | 1

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- Definition The number of privately-held companies in which the entity holds investments in preferred shares. + References No definition available. + Details
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Namespace Prefix: | lzb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition The number of investments in privately-held companies in which the entity holds a warrant to purchase common shares. + References No definition available. + Details
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Namespace Prefix: | lzb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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

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- Details
Name: | us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |