Employee Stock and Benefit Plans (Stock Option Transactions) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Shares Subject to Options
Outstanding, September 29, 2013, Shares Subject to Options	22.0
Granted, Shares Subject to Options	3.1
Exercised, Shares Subject to Options	(4.8)
Expired/forfeited, Shares Subject to Options	(0.5)
Outstanding, September 28, 2014, Shares Subject to Options	19.8	22.0
Exercisable, September 28, 2014, Shares Subject to Options	12.7
Vested and expected to vest, September 28, 2014, Shares Subject to Options	19.2
Weighted Average Exercise Price per Share
Outstanding, September 29, 2013, Weighted Average Exercise Price per Share Beginning Balance	$ 29.11
Granted, Weighted Average Exercise Price per Share	$ 80.23	$ 51.23	$ 44.26
Exercised, Weighted Average Exercise Price per Share	$ 24.27
Expired/forfeited, Weighted Average Exercise Price per Share	$ 51.80
Outstanding, September 28, 2014, Weighted Average Exercise Price per Share Ending Balance	$ 37.86	$ 29.11
Exercisable at September 28, 2014, Weighted Average Exercise Price per Share	$ 25.32
Vested and expected to vest, September 28, 2014, Weighted Average Exercise Price per Share	$ 36.89
Additional Disclosures
Outstanding, Weighted Average Remaining Contractual Life (Years)	5 years 9 months	6 years 0 months
Exercisable, September 28, 2014, Weighted Average Remaining Contractual Life (Years)	4 years 5 months
Vested and expected to vest, September 28, 2014, Weighted Average Remaining Contractual Life (Years)	5 years 8 months
Aggregate Intrinsic Value
Outstanding, Aggregate Intrinsic Value	$ 754	$ 1,060
Exercisable, September 28, 2014, Aggregate Intrinsic Value	631
Vested and expected to vest, September 28, 2014, Aggregate Intrinsic Value	$ 747