Shareholders' Equity (Details 2) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended	6 Months Ended		1 Months Ended
	Apr. 13, 2014	Apr. 14, 2013	Apr. 13, 2014	Apr. 14, 2013	Sep. 29, 2013	Apr. 13, 2014 Nov. 15, 2012 Share Repurchase Program [Member]	Apr. 13, 2014 Nov. 1, 2013 Share Repurchase Program [Member]	May 15, 2014 Subsequent Event [Member]
Treasury Stock [Abstract]
Stock Repurchase Program, Authorized Amount			$ 800			$ 300	$ 500
Stock Repurchase Program, Amount Utilized For Repurchases	117		117			117	0
Stock Repurchase Program, Remaining Authorized Repurchase Amount			683			183	500
Treasury Stock, Shares, Acquired	1.0	0.9	2.1	1.4				9.1
Treasury Stock Acquired, Average Cost Per Share	$ 52.86	$ 43.46	$ 54.50	$ 44.48				$ 39.45
Treasury Stock, Value, Acquired, Cost Method	$ 55	$ 37	$ 117	$ 63	$ 125			$ 361