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Property And Equipment (Details) - USD ($)
Sep. 26, 2015
Sep. 27, 2014
Property, Plant and Equipment [Line Items]    
Total $ 2,300,700,843 $ 2,234,454,828
Less accumulated depreciation and amortization 1,089,242,450 1,015,847,799
Property and equipment - net 1,211,458,393 1,218,607,029
Land [Member]    
Property, Plant and Equipment [Line Items]    
Total 319,247,363 308,475,596
Construction in progress [Member]    
Property, Plant and Equipment [Line Items]    
Total 15,289,568 7,201,640
Buildings [Member]    
Property, Plant and Equipment [Line Items]    
Total 1,027,716,672 1,015,061,129
Store, Office And Warehouse Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Total 815,624,122 785,827,851
Transportation Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Total 68,920,594 64,705,509
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Total $ 53,902,524 $ 53,183,103