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Earnings Per Share And Shareholders' Equity (Schedule of Company's Repurchase Program) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
1 Months Ended 3 Months Ended
Jun. 01, 2016
Apr. 30, 2016
May. 02, 2015
Jan. 30, 2016
February 2016 Repurchase Program [Member]        
Amount Authorized   $ 500    
Shares Repurchased 500 3,125    
Amount Repurchased $ 35 $ 260    
Average Stock Price of Shares Repurchased within Program   $ 83.26    
Remaining authorized repurchase amount   $ 240    
June 2015 Repurchase Program [Member]        
Remaining authorized repurchase amount   17    
February 2015 Repurchase Program [Member] [Member]        
Amount Authorized     $ 250  
Shares Repurchased     1,884  
Amount Repurchased     $ 171  
Average Stock Price of Shares Repurchased within Program     $ 90.48  
Accounts Payable [Member] | November 2012 Repurchase Program [Member]        
Share repurchase reflected in Accounts payable       $ 0
Accounts Payable [Member] | June 2015 Repurchase Program [Member]        
Share repurchase reflected in Accounts payable   $ 0    
Accounts Payable [Member] | February 2015 Repurchase Program [Member] [Member]        
Share repurchase reflected in Accounts payable     $ 57