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Pension and Savings Plans (Details Textuals) (USD $)
12 Months Ended
Aug. 27, 2011
Year
ReportableSegment
Plaintiffs
OperatingSegment
LegalMatter
Manager
SecuritiesHold
Store
Strategy
DerivativeInstrument
Aug. 28, 2010
Aug. 29, 2009
Aug. 25, 2012
Scenario, Forecast [Member]
Aug. 27, 2011
Scenario, Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]     
Expected long-term rate of return on plan assets8.00%8.00%8.00%7.50%8.00%
Pension and Savings Plans (Textuals) [Abstract]     
Number of consecutive years of highest compensation used to determine defined benefit pension plan benefits5 years    
Pension plan asset constituted in alternate investment strategiesLess than 5%    
Hedge fund managers diversified over hedge strategies16    
Different hedge strategies9    
Annual contributions by the Company to pension plans$ 34,076,000$ 12,000$ 18,000  
Expected contributions to the plan during the remainder of fiscal 20117,000,000    
Cash contribution in asset allocation28,300,000    
Percentage of company matching retirement savings plan contributions that vest immediately100.00%    
Percentage of savings option up to qualified earnings25.00%    
Annual Contribution by employer towards 401(k) Plan$ 13,300,000$ 11,700,000$ 11,000,000