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Earnings Per Share And Shareholders' Equity (Schedule of Company's Repurchase Program) (Details) (USD $)
In Millions, except Share data in Thousands, unless otherwise specified
 6 Months Ended 0 Months Ended 6 Months Ended
Aug. 03, 2013
Jul. 28, 2012
Jul. 28, 2012
November 2011 [Member]
Nov. 12, 2012
February 2012 Repurchase Program [Member]
Jul. 28, 2012
February 2012 Repurchase Program [Member]
Aug. 03, 2013
November 2012 Repurchase Program [Member]
Jul. 28, 2012
Accounts Payable [Member]
February 2012 Repurchase Program [Member]
Aug. 03, 2013
Accounts Payable [Member]
November 2012 Repurchase Program [Member]
Amount Authorized     $ 250   $ 500 [1] $ 250 [2]    
Treasury Stock, Shares, Acquired 1,217 13,302 3,657   9,645 1,217    
Treasury Stock, Value, Acquired, Cost Method 55 603 164   439 55    
Average Stock Price of Shares Repurchased within Program     $ 44.90   $ 45.54 $ 44.91    
Remaining authorized repurchase amount       50   184    
Share repurchase reflected in Accounts payable             $ 3 $ 0
[1] The February 2012 repurchase program had $50 million remaining at the time it was cancelled in conjunction with the approval of the November 2012 repurchase program.
[2] (a)The November 2012 repurchase program had $184 million remaining as of August 3, 2013.