Employee Stock and Benefit Plans (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended					12 Months Ended									0 Months Ended	1 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012	Sep. 28, 2014 Stock Options and Restricted Stock Units [Member]	Sep. 28, 2014 Employee Stock [Member]	Sep. 28, 2014 Stock Options [Member]	Sep. 29, 2013 Stock Options [Member]	Sep. 30, 2012 Stock Options [Member]	Sep. 28, 2014 Restricted Stock Units (RSUs) [Member]	Sep. 29, 2013 Restricted Stock Units (RSUs) [Member]	Sep. 30, 2012 Restricted Stock Units (RSUs) [Member]	Sep. 28, 2014 Employee Stock Purchase Plan ESPP [Member]	Sep. 28, 2014 Non Employee Director [Member] Equity Options [Member] Minimum [Member]	Sep. 28, 2014 Non Employee Director [Member] Equity Options [Member] Maximum [Member]	Dec. 21, 2012 Deferred Stock Plan [Member]	Nov. 30, 2006 Deferred Stock Plan [Member]
Common stock available for issuance pursuant to future equity-based compensation awards				56.0	7.4
Award expiration period (years)						10 years
Award vesting period for non-employee directors (years)													1 year	3 years
Total unrecognized stock-based compensation expense, net of estimated forfeitures						$ 35			$ 113
Weighted average recognition period for total unrecognized stock-based compensation expense (in years)						2 years 7 months			2 years
Total intrinsic value of stock options exercised						258	539	440
Total fair value of options vested						44	56	59
Granted, weighted average grant date fair value per share									$ 80.13	$ 50.23	$ 44.05
Total fair value of RSUs vested									103	104	80
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												0.4
Shares deferred under 1997 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
Matching contributions	$ 73.0	$ 54.7	$ 59.8