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Revenue (Schedule Of Disaggregation Of Revenue) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Feb. 27, 2021 | Feb. 29, 2020 | Feb. 27, 2021 | Feb. 29, 2020
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 773,995 | $ 786,094 | $ 1,545,899 | $ 1,609,695
Net Sales [Member] | Customer Concentration Risk [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Concentration risk, percentage | 100.00% | 100.00% | 100.00% | 100.00%
Net Sales [Member] | Geographic Concentration Risk [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 773,995 | $ 786,094 | $ 1,545,899 | $ 1,609,695
Concentration risk, percentage | 100.00% | 100.00% | 100.00% | 100.00%
Manufacturing Heavy [Member] | Net Sales [Member] | Customer Concentration Risk [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Concentration risk, percentage | 48.00% | 47.00% | 47.00% | 47.00%
Manufacturing Light [Member] | Net Sales [Member] | Customer Concentration Risk [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Concentration risk, percentage | 20.00% | 23.00% | 20.00% | 23.00%
Government [Member] | Net Sales [Member] | Customer Concentration Risk [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Concentration risk, percentage | 9.00% | 7.00% | 10.00% | 7.00%
Retail/Wholesale [Member] | Net Sales [Member] | Customer Concentration Risk [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Concentration risk, percentage | 7.00% | 6.00% | 7.00% | 6.00%
Commercial Services [Member] | Net Sales [Member] | Customer Concentration Risk [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Concentration risk, percentage | 5.00% | 5.00% | 4.00% | 5.00%
Other Customers [Member] | Net Sales [Member] | Customer Concentration Risk [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Concentration risk, percentage | 11.00% | 12.00% | 12.00% | 12.00%
United States [Member] | Net Sales [Member] | Geographic Concentration Risk [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 728,212 | $ 752,300 | $ 1,455,104 | $ 1,540,663
Concentration risk, percentage | 94.00% | 96.00% | 94.00% | 96.00%
Mexico [Member] | Net Sales [Member] | Geographic Concentration Risk [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 21,802 | $ 10,373 | $ 42,168 | $ 20,418
Concentration risk, percentage | 3.00% | 1.00% | 3.00% | 1.00%
UK [Member] | Net Sales [Member] | Geographic Concentration Risk [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 12,896 | $ 13,274 | $ 25,887 | $ 27,356
Concentration risk, percentage | 2.00% | 2.00% | 2.00% | 2.00%
Canada [Member] | Net Sales [Member] | Geographic Concentration Risk [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 11,085 | $ 10,147 | $ 22,740 | $ 21,258
Concentration risk, percentage | 1.00% | 1.00% | 1.00% | 1.00%

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