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Supplementary Balance Sheet Information (Narrative) (Details) (USD $)
 12 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Sep. 24, 2011
Supplementary Balance Sheet Information [Abstract]      
Workers' compensation per occurrence covered under insurance cost $ 750,000    
General liability 500,000    
Medical care benefits per person covered under insurance cost 325,000    
Self-insurance reserves 29,400,000    
Self-insurance reserves, current liability 12,900,000    
Self-insurance reserves, long-term liability 16,500,000    
Employee insurance expense $ 31,400,000 $ 30,600,000 $ 31,800,000