Revenue (Schedule Of Disaggregation Of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 28, 2022	May 29, 2021	May 28, 2022	May 29, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 958,579	$ 866,294	$ 2,669,648	$ 2,412,193
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	$ 958,579	$ 866,294	$ 2,669,648	$ 2,412,193
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%	48.00%	48.00%	47.00%
Manufacturing Light [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	21.00%	21.00%	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%	7.00%	7.00%
Government [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	7.00%	9.00%	7.00%	10.00%
Commercial Services [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	4.00%	4.00%	4.00%	4.00%
Other Customers [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	13.00%	11.00%	13.00%	12.00%
United States [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 911,609	$ 813,049	$ 2,527,710	$ 2,268,153
Concentration risk, percentage	95.00%	94.00%	95.00%	94.00%
Mexico [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 19,612	$ 26,051	$ 62,486	$ 68,219
Concentration risk, percentage	2.00%	3.00%	2.00%	3.00%
United Kingdom [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 13,908	$ 14,688	$ 42,049	$ 40,575
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	$ 13,450	$ 12,506	$ 37,403	$ 35,246
Concentration risk, percentage	1.00%	1.00%	1.00%	1.00%