Name:	lzb_PercentagesOfEmployeesTargetAward
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The percentage of the payout for a performance share award that is based on the achievement of financial performance.

No definition available.

Name:	lzb_PerformanceAwardCriteriaPercentageBasedOnFinancialPerformance
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The percentage of the payout for a performance share award that is based on the achievement of the total return that shareholders receive on their investment in the reporting entity's common stock relative to returns earned through investments in other public companies.

No definition available.

Name:	lzb_PerformanceAwardCriteriaPercentageBasedOnMarketCondition
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Data Type:	num:percentItemType
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Performance period to achieve certain financial goals relating to performance awards.

No definition available.

Name:	lzb_PerformanceAwardsPerformancePeriod
Namespace Prefix:	lzb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

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.

No definition available.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
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Period Type:	duration

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Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
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Data Type:	na
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Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
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Name:	us-gaap_AwardTypeAxis=lzb_PerformanceBasedSharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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

Name:	us-gaap_AwardDateAxis=lzb_AwardsGrantedDuring2018Member
Namespace Prefix:
Data Type:	na
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Period Type: