Business And Summary Of Significant Accounting Policies (Components Of Other Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 29, 2020	Aug. 31, 2019
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount, Total	$ 234,674	$ 235,117
Accumulated Amortization	(129,801)	(118,449)
Customer Relationships [Member]
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	214,460	214,460
Accumulated Amortization	$ (123,958)	(113,319)
Customer Relationships [Member] | Minimum [Member]
Intangible Assets By Major Class [Line Items]
Weighted Average Useful Life (in years)	5 years
Customer Relationships [Member] | Maximum [Member]
Intangible Assets By Major Class [Line Items]
Weighted Average Useful Life (in years)	18 years
Trademarks [Member]
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	$ 7,403	7,691
Accumulated Amortization	$ (5,843)	(5,130)
Trademarks [Member] | Minimum [Member]
Intangible Assets By Major Class [Line Items]
Weighted Average Useful Life (in years)	1 year
Trademarks [Member] | Maximum [Member]
Intangible Assets By Major Class [Line Items]
Weighted Average Useful Life (in years)	5 years
Trademarks [Member]
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount, Indefinite	$ 12,811	$ 12,966