Cover - USD ($) $ in Millions	12 Months Ended
	Apr. 24, 2021	Jun. 08, 2021	Oct. 24, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Apr. 24, 2021
Current Fiscal Year End Date	--04-24
Document Transition Report	false
Entity File Number	1-9656
Entity Registrant Name	LA-Z-BOY INCORPORATED
Entity Incorporation, State or Country Code	MI
Entity Tax Identification Number	38-0751137
Entity Address, Address Line One	One La-Z-Boy Drive,
Entity Address, City or Town	Monroe,
Entity Address, State or Province	MI
Entity Address, Postal Zip Code	48162-5138
City Area Code	734
Local Phone Number	242-1444
Title of 12(b) Security	Common Stock, $1.00 par value
Trading Symbol	LZB
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 1,647
Entity Common Stock, Shares Outstanding		45,212,041
Documents Incorporated by Reference	Portions of the registrant's definitive proxy statement to be filed with the Securities and Exchange Commission pursuant to Regulation 14A for its 2021 Annual Meeting of Shareholders are incorporated by reference into Part III of this Form 10-K.
Entity Central Index Key	0000057131
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false