Equity - Additional Information (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Apr. 02, 2016	Mar. 28, 2015	Oct. 03, 2015
Equity [Abstract]
Common stock repurchases, shares			42
Common stock repurchases	$ 2,039	$ 485	$ 4,391	$ 1,788
Remaining shares authorized for repurchase	314		314
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	$ 18		$ 18		$ 21