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Stock Purchase And Stock Option Plans (Stock Option Activity Under The 1999 Plans And The 1981 Plan) (Details) (USD $)
12 Months Ended
Sep. 30, 2011
Oct. 01, 2010
Oct. 02, 2009
Stock Purchase And Stock Option Plans   
Number of Stock Options Outstanding, Beginning balance7,410,5807,031,0176,932,559
Number of Stock Options Granted433,600975,000688,650
Number of Stock Options Exercised(1,363,005)(447,200)(527,616)
Number of Stock Options Cancelled or expired(19,665)(148,237)(62,576)
Number of Stock Options Outstanding, Ending balance6,461,5107,410,5807,031,017
Weighted Average Exercise Price Outstanding, Beginning of period$ 39.10$ 37.43$ 35.45
Weighted Average Exercise Price Options Granted$ 46.04$ 43.79$ 41.07
Weighted Average Exercise Price Options Exercised$ 21.37$ 15.90$ 15.07
Weighted Average Exercise Price Options Cancelled or expired$ 47.81$ 60.39$ 57.38
Weighted Average Exercise Price Options Outstanding, End of period$ 43.28$ 39.10$ 37.43