Investments - Additional Information (Details)	Oct. 24, 2020 company
Investments, Debt and Equity Securities [Abstract]
Preferred share investments, number of privately-held companies	2

The number of privately-held companies in which the entity holds investments in preferred shares.

No definition available.

Name:	lzb_InvestmentsPreferredSharesNumberOfPrivatelyHeldCompanies
Namespace Prefix:	lzb_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant