<?xml version='1.0' encoding='UTF-8'?>
<FilingSummary>
  <Version>3.3.1.900</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>185</ContextCount>
  <ElementCount>241</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>53</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>9</UnitCount>
  <MyReports>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>00090 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>00100 - Statement - CONSOLIDATED STATEMENT OF INCOME</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/StatementConsolidatedStatementOfIncome</Role>
      <ShortName>CONSOLIDATED STATEMENT OF INCOME</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>00200 - Statement - CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/StatementConsolidatedStatementOfComprehensiveIncome</Role>
      <ShortName>CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>00300 - Statement - CONSOLIDATED BALANCE SHEET</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/StatementConsolidatedBalanceSheet</Role>
      <ShortName>CONSOLIDATED BALANCE SHEET</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>00305 - Statement - CONSOLIDATED BALANCE SHEET (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/StatementConsolidatedBalanceSheetParenthetical</Role>
      <ShortName>CONSOLIDATED BALANCE SHEET (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>00400 - Statement - CONSOLIDATED STATEMENT OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/StatementConsolidatedStatementOfCashFlows</Role>
      <ShortName>CONSOLIDATED STATEMENT OF CASH FLOWS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>00500 - Statement - CONSOLIDATED STATEMENT OF CHANGES IN EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/StatementConsolidatedStatementOfChangesInEquity</Role>
      <ShortName>CONSOLIDATED STATEMENT OF CHANGES IN EQUITY</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>10101 - Disclosure - Basis of Presentation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureBasisOfPresentation</Role>
      <ShortName>Basis of Presentation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>10201 - Disclosure - Acquisitions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureAcquisitions</Role>
      <ShortName>Acquisitions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>10301 - Disclosure - Restructuring</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureRestructuring</Role>
      <ShortName>Restructuring</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>10401 - Disclosure - Discontinued Operations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureDiscontinuedOperations</Role>
      <ShortName>Discontinued Operations</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>10501 - Disclosure - Inventories</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureInventories</Role>
      <ShortName>Inventories</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>10601 - Disclosure - Investments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureInvestments</Role>
      <ShortName>Investments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>10701 - Disclosure - Pension Plans</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosurePensionPlans</Role>
      <ShortName>Pension Plans</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>10801 - Disclosure - Product Warranties</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureProductWarranties</Role>
      <ShortName>Product Warranties</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>10901 - Disclosure - Stock-Based Compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureStockBasedCompensation</Role>
      <ShortName>Stock-Based Compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>11001 - Disclosure - Accumulated Other Comprehensive Loss</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureAccumulatedOtherComprehensiveLoss</Role>
      <ShortName>Accumulated Other Comprehensive Loss</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>11101 - Disclosure - Segment Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureSegmentInformation</Role>
      <ShortName>Segment Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>11201 - Disclosure - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureIncomeTaxes</Role>
      <ShortName>Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>11301 - Disclosure - Earnings per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureEarningsPerShare</Role>
      <ShortName>Earnings per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>11401 - Disclosure - Fair Value Measurements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureFairValueMeasurements</Role>
      <ShortName>Fair Value Measurements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>11501 - Disclosure - Recent Accounting Pronouncements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureRecentAccountingPronouncements</Role>
      <ShortName>Recent Accounting Pronouncements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>30203 - Disclosure - Acquisitions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureAcquisitionsTables</Role>
      <ShortName>Acquisitions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureAcquisitions</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>30403 - Disclosure - Discontinued Operations (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureDiscontinuedOperationsTables</Role>
      <ShortName>Discontinued Operations (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureDiscontinuedOperations</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>30503 - Disclosure - Inventories (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureInventoriesTables</Role>
      <ShortName>Inventories (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureInventories</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>30603 - Disclosure - Investments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureInvestmentsTables</Role>
      <ShortName>Investments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureInvestments</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>30703 - Disclosure - Pension Plans (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosurePensionPlansTables</Role>
      <ShortName>Pension Plans (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosurePensionPlans</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>30803 - Disclosure - Product Warranties (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureProductWarrantiesTables</Role>
      <ShortName>Product Warranties (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureProductWarranties</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>30903 - Disclosure - Stock-Based Compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureStockBasedCompensationTables</Role>
      <ShortName>Stock-Based Compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureStockBasedCompensation</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>31003 - Disclosure - Accumulated Other Comprehensive Loss (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureAccumulatedOtherComprehensiveLossTables</Role>
      <ShortName>Accumulated Other Comprehensive Loss (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureAccumulatedOtherComprehensiveLoss</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>31103 - Disclosure - Segment Information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureSegmentInformationTables</Role>
      <ShortName>Segment Information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureSegmentInformation</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>31303 - Disclosure - Earnings per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureEarningsPerShareTables</Role>
      <ShortName>Earnings per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureEarningsPerShare</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>31403 - Disclosure - Fair Value Measurements (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureFairValueMeasurementsTables</Role>
      <ShortName>Fair Value Measurements (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureFairValueMeasurements</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>40101 - Disclosure - Basis of Presentation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureBasisOfPresentationDetails</Role>
      <ShortName>Basis of Presentation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureBasisOfPresentation</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>40201 - Disclosure - Acquisitions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureAcquisitionsDetails</Role>
      <ShortName>Acquisitions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureAcquisitionsTables</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>40301 - Disclosure - Restructuring (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureRestructuringDetails</Role>
      <ShortName>Restructuring (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureRestructuring</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>40401 - Disclosure - Discontinued Operations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureDiscontinuedOperationsDetails</Role>
      <ShortName>Discontinued Operations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureDiscontinuedOperationsTables</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>40501 - Disclosure - Inventories (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureInventoriesDetails</Role>
      <ShortName>Inventories (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureInventoriesTables</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>40601 - Disclosure - Investments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureInvestmentsDetails</Role>
      <ShortName>Investments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureInvestmentsTables</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>40701 - Disclosure - Pension Plans (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosurePensionPlansDetails</Role>
      <ShortName>Pension Plans (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosurePensionPlansTables</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>40801 - Disclosure - Product Warranties (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureProductWarrantiesDetails</Role>
      <ShortName>Product Warranties (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureProductWarrantiesTables</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>40901 - Disclosure - Stock-Based Compensation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureStockBasedCompensationDetails</Role>
      <ShortName>Stock-Based Compensation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureStockBasedCompensationTables</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>40902 - Disclosure - Stock-Based Compensation, Stock Options (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureStockBasedCompensationStockOptionsDetails</Role>
      <ShortName>Stock-Based Compensation, Stock Options (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>40903 - Disclosure - Stock-Based Compensation, SARs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureStockBasedCompensationSarsDetails</Role>
      <ShortName>Stock-Based Compensation, SARs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureStockBasedCompensationTables</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>40904 - Disclosure - Stock-Based Compensation, Restricted Shares and RSUs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureStockBasedCompensationRestrictedSharesAndRsusDetails</Role>
      <ShortName>Stock-Based Compensation, Restricted Shares and RSUs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>40905 - Disclosure - Stock-Based Compensation, Performance Awards (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureStockBasedCompensationPerformanceAwardsDetails</Role>
      <ShortName>Stock-Based Compensation, Performance Awards (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>41001 - Disclosure - Accumulated Other Comprehensive Loss (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureAccumulatedOtherComprehensiveLossDetails</Role>
      <ShortName>Accumulated Other Comprehensive Loss (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureAccumulatedOtherComprehensiveLossTables</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>41101 - Disclosure - Segment Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureSegmentInformationDetails</Role>
      <ShortName>Segment Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureSegmentInformationTables</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>41102 - Disclosure - Segment Information, Income Statement Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureSegmentInformationIncomeStatementInformationDetails</Role>
      <ShortName>Segment Information, Income Statement Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>41201 - Disclosure - Income Taxes (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureIncomeTaxesDetails</Role>
      <ShortName>Income Taxes (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureIncomeTaxes</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>41301 - Disclosure - Earnings per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureEarningsPerShareDetails</Role>
      <ShortName>Earnings per Share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureEarningsPerShareTables</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>41302 - Disclosure - Earnings per Share (Details 2)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureEarningsPerShareDetails2</Role>
      <ShortName>Earnings per Share (Details 2)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureEarningsPerShareTables</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="lzb-20160123.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>41401 - Disclosure - Fair Value Measurements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://la-z-boy.com/role/DisclosureFairValueMeasurementsDetails</Role>
      <ShortName>Fair Value Measurements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://la-z-boy.com/role/DisclosureFairValueMeasurementsTables</ParentRole>
      <Position>53</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>lzb-20160123.xml</File>
    <File>lzb-20160123.xsd</File>
    <File>lzb-20160123_cal.xml</File>
    <File>lzb-20160123_def.xml</File>
    <File>lzb-20160123_lab.xml</File>
    <File>lzb-20160123_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies/>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
