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Earnings per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jul. 29, 2017
Jul. 30, 2016
Jul. 29, 2017
Jul. 30, 2016
Numerator        
Net earnings from continuing operations $ 209 $ 182 $ 397 $ 408
Denominator        
Weighted-average common shares outstanding (in shares) 304.1 320.8 306.7 322.2
Effect of potentially dilutive securities:        
Nonvested share awards (in shares) 6.7 2.1 6.3 2.6
Weighted-average common shares outstanding, assuming dilution (in shares) 310.8 322.9 313.0 324.8
Net earnings per share from continuing operations        
Basic (in dollars per share) $ 0.69 $ 0.57 $ 1.29 $ 1.27
Diluted (in dollars per share) $ 0.67 $ 0.56 $ 1.27 $ 1.26
Antidilutive securities excluded from computation of earnings per share 0.0 8.8 0.0 8.8