Expense (income) recognized during the period for share-based compensation awards that are settled in cash.

No definition available.

Name:	lzb_ExpenseIncomeRecognizedForLiabilityBasedAwards
Namespace Prefix:	lzb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Expense recognized during the period for share-based compensation awards that are settled in stock.

+ References

No definition available.

+ Details

Name:	lzb_ExpenseRecognizedForEquityBasedAwards
Namespace Prefix:	lzb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_AllocatedShareBasedCompensationExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

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

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

- Definition

Number of shares authorized for issuance under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

Name:	us-gaap_PlanNameAxis=lzb_OmnibusIncentivePlan2017Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Stock-Based Compensation - Plans and Expense (Details) - USD ($) $ in Thousands, shares in Millions	12 Months Ended
	Apr. 24, 2021	Apr. 25, 2020	Apr. 27, 2019	Apr. 28, 2018
Stock-based compensation expense recognized for outstanding grants
Equity-based awards expense	$ 12,671	$ 8,371	$ 10,981
Liability-based awards expense	1,878	(982)	339
Total stock-based compensation expense	14,549	7,389	11,320
Stock options
Stock-based compensation expense recognized for outstanding grants
Equity-based awards expense	2,959	2,000	3,507
Restricted stock awards
Stock-based compensation expense recognized for outstanding grants
Equity-based awards expense	3,367	2,913	2,548
Stock appreciation rights
Stock-based compensation expense recognized for outstanding grants
Liability-based awards expense	375	(240)	98
Restricted stock units
Stock-based compensation expense recognized for outstanding grants
Equity-based awards expense	840	900	704
Liability-based awards expense	43	20	22
Performance-based units
Stock-based compensation expense recognized for outstanding grants
Equity-based awards expense	5,505	2,558	4,222
Liability-based awards expense	23	6	7
Deferred stock units
Stock-based compensation expense recognized for outstanding grants
Liability-based awards expense	$ 1,437	$ (768)	$ 212
2017 Omnibus Incentive Plan
Stock-Based Compensation
Aggregate number of common shares that may be issued through awards (in shares)				5.9