Employee Stock and Benefit Plans (Stock Option Transactions) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 29, 2013
Shares Subject to Options
Outstanding, September 28, 2014, Shares Subject to Options	39.6
Granted, Shares Subject to Options	6.4
Exercised, Shares Subject to Options	(11.3)
Expired/forfeited, Shares Subject to Options	(1.1)
Outstanding, September 27, 2015, Shares Subject to Options	33.6	39.6
Exercisable, September 27, 2015, Shares Subject to Options	21.1
Vested and expected to vest, September 27, 2015, Shares Subject to Options	32.4
Weighted Average Exercise Price per Share
Outstanding, September 28, 2014, Weighted Average Exercise Price per Share Beginning Balance	$ 18.93
Granted, Weighted Average Exercise Price per Share	39.89	$ 40.12	$ 25.62
Exercised, Weighted Average Exercise Price per Share	14.99
Expired/forfeited, Weighted Average Exercise Price per Share	32.38
Outstanding, September 27, 2015, Weighted Average Exercise Price per Share Ending Balance	23.81	$ 18.93
Exercisable at September 27, 2015, Weighted Average Exercise Price per Share	16.75
Vested and expected to vest, September 27, 2015, Weighted Average Exercise Price per Share	$ 23.29
Additional Disclosures
Outstanding, Weighted Average Remaining Contractual Life (Years)	6 years	5 years 9 months 18 days
Exercisable, September 27, 2015, Weighted Average Remaining Contractual Life (Years)	4 years 8 months 12 days
Vested and expected to vest, September 27, 2015, Weighted Average Remaining Contractual Life (Years)	5 years 10 months 24 days
Aggregate Intrinsic Value
Outstanding, Aggregate Intrinsic Value	$ 1,150	$ 754
Exercisable, September 27, 2015, Aggregate Intrinsic Value	872
Vested and expected to vest, September 27, 2015, Aggregate Intrinsic Value	$ 1,125