Revenue (Schedule Of Disaggregation Of Revenue) (Details) - USD ($) $ in Thousands		3 Months Ended													12 Months Ended
		Aug. 29, 2020	[1]	May 30, 2020	[1]	Feb. 29, 2020	[1]	Nov. 30, 2019	[1]	Aug. 31, 2019	[2]	Jun. 01, 2019	Mar. 02, 2019	Dec. 01, 2018	Aug. 29, 2020	Aug. 31, 2019	Sep. 01, 2018
Disaggregation of Revenue [Line Items]
Net sales		$ 747,732		$ 834,972		$ 786,094		$ 823,601		$ 842,670		$ 866,546	$ 823,004	$ 831,597	$ 3,192,399	$ 3,363,817	$ 3,203,878
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															$ 3,192,399	$ 3,363,817
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															45.00%	48.00%
Manufacturing Light [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage															21.00%	22.00%
Government [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage															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%
Commercial Services [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage															5.00%	4.00%
Other Customers [Member] | Net Sales [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	[3]														12.00%	12.00%
United States [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales															$ 3,044,943	$ 3,243,026
Concentration risk, percentage															95.00%	96.00%
UK [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales															$ 48,505	$ 56,506
Concentration risk, percentage															2.00%	2.00%
Canada [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales															$ 41,402	$ 41,126
Concentration risk, percentage															1.00%	1.00%
Mexico [Member] | Net Sales [Member] | Geographic Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Net sales															$ 57,549	$ 23,159
Concentration risk, percentage															2.00%	1.00%

[1] In fiscal year 2020, the Company recorded $6,583 of consulting-related costs and $10,446 of severance and separation benefits charges and other related costs. Refer to Note 13 for more information. The net income per share impact from these charges were $0.23 in fiscal year 2020. Consulting-related costs, and severance and separation benefits charges and other related costs by fiscal quarter in fiscal year 2020 were as follows: $2,571 ($0.03 Net income per share impact) in fiscal Q1; $1,941 ($0.03 Net income per share impact) in fiscal Q2; $1,359 ($0.02 Net income per share impact) in fiscal Q3; and $11,158 ($0.15 Net income per share impact) in fiscal Q4.

[2] In the fourth quarter of fiscal year 2019, the Company recorded $6,725 of severance and separation benefits charges and other related costs associated with workforce reduction and increased performance management. The net income per share impact from these charges was $0.09 in the fourth quarter of fiscal year 2019.

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