Earnings Per Share And Shareholders' Equity (Shares Utilized for the Calculation of Basic and Diluted Earnings per Share) (Details) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Oct. 27, 2012		Oct. 29, 2011		Oct. 27, 2012		Oct. 29, 2011
Weighted-average Common Shares:
Issued Shares	303		334		301		333
Treasury Shares	(15)		(36)		(11)		(26)
Basic Shares	288		298		290		307
Effect of Dilutive Options and Restricted Stock	6		10		7		10
Diluted Shares	294		308		297		317
Anti-dilutive Options and Awards	1	[1]	1	[1]	1	[1]	1	[1]

[1] These options and awards were excluded from the calculation of diluted earnings per share because their inclusion would have been anti-dilutive.