Equity Common Stock Repurchases (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Sep. 28, 2013
Common Stock Repurchases [Abstract]
Common stock repurchases, shares	60	84	71
Treasury Stock, Value, Acquired, Cost Method	$ 6,095	$ 6,527	$ 4,087