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Employee Stock Purchase And Stock Option Plans (Stock Option Activity Under The 1999 Plans And The 1981 Plan) (Details) - $ / shares
 12 Months Ended
Oct. 02, 2015
Sep. 26, 2014
Sep. 27, 2013
Sep. 28, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]        
Number of stock options outstanding, beginning balance (in shares) 4,221,147 4,606,212 5,756,734  
Number of stock options granted (in shares) 614,759 602,525 753,450  
Number of stock options exercised (in shares) (34,000) (718,065) (1,782,371)  
Number of stock options cancelled or expired (in shares) (729,199) (269,525) (121,601)  
Number of stock options outstanding, ending balance (in shares) 4,072,707 4,221,147 4,606,212  
Options outstanding weighted average price (in dollars per share) $ 46.06 $ 53.23 $ 52.33 $ 47.23
Weighted average exercise price options granted (in dollars per share) 43.56 53.51 54.71  
Weighted average exercise price options exercised (in dollars per share) 31.54 47.18 37.00  
Weighted average exercise price options cancelled or expired (in dollars per share) $ 86.15 $ 54.46 $ 50.22