Employee Stock and Benefit Plans (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Oct. 02, 2011
Common stock available for issuance pursuant to future equity-based compensation awards	18.2
Shares available for issuance under ESPP	7.8
Deferred Stock Plan [Member]
Shares deferred under deferred stock plan		3.4
Deferred shares issued under 1997 Deferred Stock Plan	2.2
Shares paid for tax withholding for share based compensation	1.2
Defined Contribution Plans [Member]
Matching contributions	$ 54.7	$ 59.8	$ 45.5
Stock Options [Member]
Award expiration period (years)	10 years
Total unrecognized stock-based compensation expense, net of estimated forfeitures	32
Weighted average recognition period for total unrecognized stock-based compensation expense (in years)	2 years 8 months
Total intrinsic value of stock options exercised	539	440	323
Total fair value of options vested	56	59	126
Restricted Stock Units (RSUs) [Member]
Total unrecognized stock-based compensation expense, net of estimated forfeitures	78
Weighted average recognition period for total unrecognized stock-based compensation expense (in years)	2 years 2 months
Total fair value of options vested	$ 104	$ 80	$ 16
Granted, weighted average grant date fair value per share	$ 50.23	$ 44.05	$ 31.06
Employee Stock Purchase Plan ESPP [Member]
Maximum permitted contribution to Deferred Stock Plan, percent	10.00%
Discounted stock purchase price, percent of market value	95.00%
Number of shares issued under plan	0.3
Non Employee Director [Member] | Stock Options [Member] | Minimum [Member]
Award vesting period for non-employee directors (years)	1 year
Non Employee Director [Member] | Stock Options [Member] | Maximum [Member]
Award vesting period for non-employee directors (years)	3 years