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Earnings Per Share And Shareholders' Equity (Shares Utilized for the Calculation of Basic and Diluted Earnings per Share) (Details) - shares
shares in Millions
3 Months Ended
Apr. 30, 2016
May. 02, 2015
Weighted-average Common Shares:    
Issued Shares 313 311
Treasury Shares (25) (18)
Basic Shares 288 293
Effect of Dilutive Options and Restricted Stock 5 6
Diluted Shares 293 299
Anti-dilutive Options and Awards (a) [1] 2 1
[1] These options and awards were excluded from the calculation of diluted earnings per share because their inclusion would have been anti-dilutive.