Earnings per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	4 Months Ended		12 Months Ended
	Jan. 19, 2014	Jan. 20, 2013	Sep. 29, 2013
Earnings Per Share Reconciliation [Abstract]
Net Income	$ 158	$ 146	$ 551
Weighted Average Number of Shares Outstanding, Basic	372.3	370.8
Weighted Average Number of Shares Outstanding, Diluted	375.8	374.3
Basic earnings per share (in dollars per share)	$ 0.42	$ 0.39
Diluted earnings per share (in dollars per share)	$ 0.42	$ 0.39
Stock Options [Member]
Potential common shares outstanding [Abstract]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	3.5	3.5