v3.7.0.1
Document and Entity Information - USD ($)
$ in Millions
12 Months Ended
Apr. 29, 2017
Jun. 13, 2017
Oct. 29, 2016
Document and Entity Information      
Entity Registrant Name LA-Z-BOY INC    
Entity Central Index Key 0000057131    
Current Fiscal Year End Date --04-29    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 1,139.9
Entity Common Stock, Shares Outstanding   48,301,542  
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus FY    
Document Type 10-K    
Amendment Flag false    
Document Period End Date Apr. 29, 2017