Revenue (Schedule Of Disaggregation Of Revenue) (Details) - USD ($)		3 Months Ended		9 Months Ended
		May 30, 2020	Jun. 01, 2019	May 30, 2020	Jun. 01, 2019
Disaggregation of Revenue [Line Items]
Net sales		$ 834,972,000	$ 866,546,000	$ 2,444,667,000	$ 2,521,147,000
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		$ 834,972,000	$ 866,546,000	$ 2,444,667	$ 2,521,147
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		40.00%	47.00%	45.00%	48.00%
Manufacturing Light [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage		19.00%	22.00%	22.00%	22.00%
Government [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage		15.00%	7.00%	10.00%	8.00%
Retail/Wholesale [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage		7.00%	6.00%	6.00%	6.00%
Commercial Services [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage		5.00%	4.00%	5.00%	4.00%
Other Customers [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	[1]	14.00%	14.00%	12.00%	12.00%
United States [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales		$ 795,865,000	$ 831,533,000	$ 2,336,528	$ 2,434,603
Concentration risk, percentage		96.00%	96.00%	96.00%	97.00%
UK [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales		$ 10,019,000	$ 14,399,000	$ 37,375	$ 43,373
Concentration risk, percentage		1.00%	2.00%	1.00%	2.00%
Canada [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales		$ 9,783,000	$ 10,747,000	$ 31,041	$ 30,363
Concentration risk, percentage		1.00%	1.00%	1.00%	1.00%
Mexico [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales		$ 19,305,000	$ 9,867,000	$ 39,723	$ 12,808
Concentration risk, percentage		2.00%		2.00%

[1] The other category primarily includes individual customer and small business net sales not assigned to a specific industry classification.