Basis of Presentation (Details)	3 Months Ended
Jul. 25, 2015
Basis of Presentation
Improvement in gross margin due to legal settlement (as a percent)	0.50%

Represents the percentage improvement in gross margin resulting from a legal settlement.

No definition available.

Name:	lzb_PercentageOfGrossMarginImprovedDueToLegalSettlement
Namespace Prefix:	lzb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration