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Accounting Policies - Goodwill (Details) - Retail Segment | 12 Months Ended
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Apr. 28, 2018 region item
Goodwill |
Number of geographic regions | region | 3
Number of reporting units for goodwill | item | 1

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- Definition The number of geographic regions within an operating segment segment. + References No definition available. + Details
Name: | lzb_NumberOfGeographicRegionsInSegment
Namespace Prefix: | lzb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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

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- Definition Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment. + References No definition available. + Details
Name: | us-gaap_NumberOfReportingUnits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=lzb_RetailSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |