Basis of Presentation - Legal Settlements (Details)	3 Months Ended	9 Months Ended
Jan. 28, 2017	Jan. 28, 2017
Basis of Presentation
Improvement in gross margin due to legal settlement (as a percent)	0.00%	0.30%

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