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Associate Benefit Plans (Narrative) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Sep. 01, 2012
Aug. 27, 2011
Sep. 01, 2012
Omnibus Incentive Plan [Member]
Sep. 01, 2012
Stock Options [Member]
Aug. 27, 2011
Stock Options [Member]
Aug. 28, 2010
Stock Options [Member]
Sep. 01, 2012
Restricted Stock Awards [Member]
Aug. 27, 2011
Restricted Stock Awards [Member]
Oct. 31, 2011
Restricted Stock Units [Member]
Aug. 27, 2011
Restricted Stock Units [Member]
Sep. 01, 2012
Restricted Stock Units [Member]
Jan. 31, 2009
Stock Purchase Plan [Member]
Jan. 31, 2005
Stock Purchase Plan [Member]
Sep. 01, 2012
Stock Purchase Plan [Member]
Aug. 27, 2011
Stock Purchase Plan [Member]
Sep. 01, 2012
Savings Plan [Member]
Aug. 27, 2011
Savings Plan [Member]
Aug. 28, 2010
Savings Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Common stock, shares issued     6,200,000                              
Total intrinsic value of options exercised       $ 16,185 $ 28,520 $ 22,177                        
Total intrinsic value of options exercisable 13,444     13,444                            
Total intrinsic value of options outstanding 26,864     26,864                            
Fair value of shares vested 6,804 6,154                                
Unrecognized share-based compensation cost       7,785       15,330   6,027                
Unrecognized share-based compensation weighted average period       1 year 7 months 24 days       2 years 1 month 17 days   3 years 1 month 6 days                
Number of vesting installments                 2                  
Number of shares granted from award/units Agreement             132,000   183,000                  
Number of unvested award/units outstanding             535,000 618,000   189,000 192,000              
Weighted-average fair value of award/units outstanding             $ 52.37 $ 46.18   $ 54.68 $ 54.90              
Maximum number of shares available for purchase for qualified associates                           5,000        
Percent qualified associates pay for shares, based on closing price of stock                           90.00%        
Additional shares authorized under plan                         300,000          
Maximum number of shares reserved for sale under plan before increase                       800,000            
Maximum number of shares reserved for sale under plan                       1,150,000            
Shares reserved for issuance under plan                             213,000      
Company contributions to savings plan                               $ 4,738 $ 4,036 $ 860
Shares purchased by qualified associates                           52,000 53,000      
Average purchase price per share                           $ 64.71 $ 55.70