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Accounting Policies (Details)
$ in Millions
12 Months Ended
Jul. 30, 2018
Apr. 25, 2020
USD ($)
company
geographic_region
reporting_unit
Apr. 27, 2019
USD ($)
Apr. 28, 2018
USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
LIFO inventories (as a percent)   62.00% 62.00%  
Research and development costs   $ 10.8 $ 9.1 $ 7.9
Advertising expenses   $ 108.3 $ 106.4 $ 88.3
Reimbursement for cost of program (as a percent)   30.00%    
Deductibles for employee-related health care benefits, vehicle liability, product liability, and workers' compensation liabilities   $ 1.5    
Variable Interest Entity, Not Primary Beneficiary        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Preferred share investments, number of privately-held companies | company   2    
Preferred share investments with common share warrant, number of privately-held companies | company   1    
Minimum        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Depreciable life   3 years    
Maximum        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Depreciable life   7 years    
Retail        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Number of geographic regions | geographic_region   4    
Number of reporting units | reporting_unit   1    
La-Z-Boy Wholesale Business in United Kingdom and Ireland | Maximum        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Finite-lived intangible asset, useful life   15 years    
Joybird        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Finite-lived intangible asset, useful life 8 years 8 years