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Revenue (Schedule Of Disaggregation Of Revenue) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 03, 2022	Aug. 28, 2021	Aug. 29, 2020
Disaggregation of Revenue [Line Items]
Net sales	$ 3,691,893	$ 3,243,224	$ 3,192,399
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]
Net sales	$ 3,691,893	$ 3,243,224
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	49.00%	48.00%
Manufacturing Light [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	21.00%	20.00%
Retail/Wholesale [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	7.00%	7.00%
Government [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	8.00%	9.00%
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	11.00%	12.00%
US [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 3,501,290	$ 3,049,543
Concentration risk, percentage	95.00%	94.00%
Mexico [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 83,626	$ 91,917
Concentration risk, percentage	2.00%	3.00%
Canada [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 51,672	$ 46,920
Concentration risk, percentage	2.00%	1.00%
North America [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 3,636,588	$ 3,188,380
Concentration risk, percentage	99.00%	98.00%
Other foreign countries [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 55,305	$ 54,844
Concentration risk, percentage	1.00%	2.00%

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