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Business And Summary Of Significant Accounting Policies (Components Of Other Intangible Assets) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Aug. 31, 2019 | Sep. 01, 2018
Intangible Assets By Major Class [Line Items] |  |
Gross Carrying Amount, Total | $ 235,117 | $ 252,124
Accumulated Amortization | (118,449) | (129,400)
Customer Relationships [Member] |  |
Intangible Assets By Major Class [Line Items] |  |
Gross Carrying Amount | 214,460 | 208,260
Accumulated Amortization | $ (113,319) | (101,916)
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 |
Contract Rights [Member] |  |
Intangible Assets By Major Class [Line Items] |  |
Weighted Average Useful Life (in years) | 10 years |
Gross Carrying Amount |  | 23,100
Accumulated Amortization |  | (23,100)
Trademarks [Member] |  |
Intangible Assets By Major Class [Line Items] |  |
Gross Carrying Amount | $ 7,691 | 6,630
Accumulated Amortization | $ (5,130) | (4,384)
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 | $ 12,966 | $ 14,134

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