Stock Purchase And Stock Option Plans (Information Regarding Options Outstanding, And Options Exercisable) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2011 months years	Oct. 01, 2010	Oct. 02, 2009	Sep. 26, 2008
Range of Exercise Prices minimum	$ 13.29	$ 10.79	$ 7.03
Range of Exercise Prices maximum	$ 94.11	$ 94.11	$ 94.11
Options Outstanding Number	6,461,510	7,410,580	7,031,017	6,932,559
Options Outstanding Weighted Average Remaining Contractual Life, in Years	4.01
Options Outstanding Weighted Average Price	$ 43.28	$ 39.10	$ 37.43	$ 35.45
Options Exercisable Number	4,822,297
Options Exercisable Weighted Average Exercise Price	$ 41.47
Nonvested not yet recognized	$ 27.9
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term, in Years	2.60
Range Of Exercise Prices $13.29 - $18.49 [Member]
Range of Exercise Prices minimum	$ 13.29
Range of Exercise Prices maximum	$ 18.49
Options Outstanding Number	262,200
Options Outstanding Weighted Average Remaining Contractual Life, in Years	0.89
Options Outstanding Weighted Average Price	$ 15.70
Options Exercisable Number	262,200
Options Exercisable Weighted Average Exercise Price	$ 15.70
Range Of Exercise Prices $19.21 - $26.95 [Member]
Range of Exercise Prices minimum	$ 19.21
Range of Exercise Prices maximum	$ 26.95
Options Outstanding Number	1,489,535
Options Outstanding Weighted Average Remaining Contractual Life, in Years	1.11
Options Outstanding Weighted Average Price	$ 23.10
Options Exercisable Number	1,489,535
Options Exercisable Weighted Average Exercise Price	$ 23.10
Range Of Exercise Prices $32.51 - $37.35 [Member]
Range of Exercise Prices minimum	$ 32.51
Range of Exercise Prices maximum	$ 37.35
Options Outstanding Number	474,250
Options Outstanding Weighted Average Remaining Contractual Life, in Years	2.20
Options Outstanding Weighted Average Price	$ 37.30
Options Exercisable Number	452,375
Options Exercisable Weighted Average Exercise Price	$ 37.33
Range Of Exercise Prices $37.68 - $46.86 [Member]
Range of Exercise Prices minimum	$ 37.68
Range of Exercise Prices maximum	$ 46.86
Options Outstanding Number	2,656,000
Options Outstanding Weighted Average Remaining Contractual Life, in Years	5.88
Options Outstanding Weighted Average Price	$ 42.85
Options Exercisable Number	1,515,550
Options Exercisable Weighted Average Exercise Price	$ 43.00
Range Of Exercise Prices $47.11 - $55.04 [Member]
Range of Exercise Prices minimum	$ 47.11
Range of Exercise Prices maximum	$ 55.04
Options Outstanding Number	391,550
Options Outstanding Weighted Average Remaining Contractual Life, in Years	8.83
Options Outstanding Weighted Average Price	$ 48.41
Options Exercisable Number	82,465
Options Exercisable Weighted Average Exercise Price	$ 48.17
Range Of Exercise Prices $56.95 - $57.81 [Member]
Range of Exercise Prices minimum	$ 56.95
Range of Exercise Prices maximum	$ 57.81
Options Outstanding Number	515,825
Options Outstanding Weighted Average Remaining Contractual Life, in Years	2.76
Options Outstanding Weighted Average Price	$ 56.97
Options Exercisable Number	513,825
Options Exercisable Weighted Average Exercise Price	$ 56.97
Range Of Exercise Prices $76.15 - $83.61 [Member]
Range of Exercise Prices minimum	$ 76.15
Range of Exercise Prices maximum	$ 83.61
Options Outstanding Number	80,625
Options Outstanding Weighted Average Remaining Contractual Life, in Years	4.27
Options Outstanding Weighted Average Price	$ 81.33
Options Exercisable Number	60,625
Options Exercisable Weighted Average Exercise Price	$ 81.33
Range Of Exercise Prices $88.19 - $94.11 [Member]
Range of Exercise Prices minimum	$ 88.19
Range of Exercise Prices maximum	$ 94.11
Options Outstanding Number	591,525
Options Outstanding Weighted Average Remaining Contractual Life, in Years	3.63
Options Outstanding Weighted Average Price	$ 92.57
Options Exercisable Number	445,722
Options Exercisable Weighted Average Exercise Price	$ 92.57