Property And Equipment (Schedule Of Property And Equipment) (Details) - USD ($)	Sep. 28, 2019	Sep. 29, 2018
Property, Plant and Equipment [Line Items]
Total	$ 2,727,161,139	$ 2,613,037,487
Less accumulated depreciation and amortization	1,382,893,824	1,309,993,117
Property and equipment - net	1,344,267,315	1,303,044,370
Land [Member]
Property, Plant and Equipment [Line Items]
Total	373,434,259	351,073,344
Construction In Progress [Member]
Property, Plant and Equipment [Line Items]
Total	26,206,372	12,393,293
Buildings [Member]
Property, Plant and Equipment [Line Items]
Total	1,212,984,091	1,173,237,017
Store, Office and Warehouse Equipment [Member]
Property, Plant and Equipment [Line Items]
Total	979,229,721	946,026,834
Transportation Equipment [Member]
Property, Plant and Equipment [Line Items]
Total	78,851,265	75,919,047
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total	$ 56,455,431	$ 54,387,952

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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