Shareholders' Equity (Details) - USD ($) shares in Thousands, $ in Millions	8 Months Ended
	Sep. 05, 2015	Sep. 06, 2014
Repurchase Of Shares Of Common Stock [Line Items]
Shares Repurchased	4,516	6,830
Dollar Value of Shares Repurchased	$ 370	$ 510
Remaining dollar value of shares that may be repurchased	$ 763
November 2012 [Member]
Repurchase Of Shares Of Common Stock [Line Items]
Shares Repurchased	0	2,737
Dollar Value of Shares Repurchased	$ 0	$ 203
Remaining dollar value of shares that may be repurchased	$ 0
November 2013 [Member]
Repurchase Of Shares Of Common Stock [Line Items]
Shares Repurchased	1,779	4,093
Dollar Value of Shares Repurchased	$ 133	$ 307
Remaining dollar value of shares that may be repurchased	$ 0
November 2014 [Member]
Repurchase Of Shares Of Common Stock [Line Items]
Shares Repurchased	2,737	0
Dollar Value of Shares Repurchased	$ 237	$ 0
Remaining dollar value of shares that may be repurchased	$ 763