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Revenue (Schedule Of Disaggregation Of Revenue) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jun. 01, 2019	Jun. 02, 2018	Jun. 01, 2019	Jun. 02, 2018
Disaggregation of Revenue [Line Items]
Net sales		$ 866,546	$ 828,345	$ 2,521,147	$ 2,365,893
Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage		100.00%		100.00%
Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage		100.00%		100.00%
Manufacturing Heavy [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage		47.00%		48.00%
Manufacturing Light [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage		22.00%		22.00%
Government [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage		7.00%		8.00%
Retail/Wholesale [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage		6.00%		6.00%
Commercial Services [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage		4.00%		4.00%
Other Customers [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	[1]	14.00%		12.00%
United States [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales		$ 831,533		$ 2,434,603
Concentration risk, percentage		96.00%		97.00%
UK [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales		$ 14,399		$ 43,373
Concentration risk, percentage		2.00%		2.00%
Canada [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales		$ 10,747		$ 30,363
Concentration risk, percentage		1.00%		1.00%
Mexico [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales		$ 9,867		$ 12,808
Concentration risk, percentage		1.00%
Mexico [Member] | Net Sales [Member] | Geographic Concentration Risk [Member] | Maximum [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage				1.00%
[1] The other category primarily includes individual customer and small business net sales not assigned to a specific industry classification.

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