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Property, Plant And Equipment (Summary Of Property, Plant And Equipment) (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 03, 2022
Aug. 28, 2021
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 871,207 $ 848,325
Less: accumulated depreciation and amortization 584,541 549,909
Total 286,666 298,416
Land [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 24,418 28,151
Buildings And Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 167,012 189,510
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 4,787 5,038
Furniture, Fixtures And Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 176,723 173,298
Computer Systems, Equipment And Software [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 498,267 $ 452,328
Minimum [Member] | Buildings And Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment estimated useful life 3 years  
Minimum [Member] | Furniture, Fixtures And Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment estimated useful life 3 years  
Minimum [Member] | Computer Systems, Equipment And Software [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment estimated useful life 3 years  
Maximum [Member] | Buildings And Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment estimated useful life 40 years  
Maximum [Member] | Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment estimated useful life 10 years  
Maximum [Member] | Furniture, Fixtures And Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment estimated useful life 20 years  
Maximum [Member] | Computer Systems, Equipment And Software [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment estimated useful life 10 years