Shareholders' Equity (Details 2) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended					2 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012	Sep. 28, 2014 Aug. 1, 2014 Share Repurchase Program [Member]	Sep. 28, 2014 Nov. 1, 2013 Share Repurchase Program [Member]	Nov. 18, 2014 Subsequent Event [Member] Aug. 1, 2014 Share Repurchase Program [Member]
Treasury Stock [Abstract]
Stock Repurchase Program, Authorized Amount				$ 1,000
Stock Repurchase Program, Amount Utilized For Repurchases				100		43
Stock Repurchase Program, Remaining Authorized Repurchase Amount				900		857
Stock Repurchase Program Expiration Date				Aug. 01, 2016
Stock Repurchase Program, Authorized Amount Cancelled					322
Treasury Stock, Shares, Acquired	13.9	2.6				0.9
Treasury Stock Acquired, Average Cost Per Share	$ 41.51	$ 48.70				$ 47.39
Treasury Stock, Value, Acquired, Cost Method	$ 578	$ 125	$ 28