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Earnings Per Share (Computation Of Earnings Per Share) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 12 Months Ended
Jan. 28, 2017
[1]
Oct. 29, 2016
[1]
Jul. 30, 2016
[1]
Apr. 30, 2016
[1]
Jan. 30, 2016
[1]
Oct. 31, 2015
[1]
Aug. 01, 2015
[1]
May 02, 2015
[1]
Jan. 28, 2017
Jan. 30, 2016
Jan. 31, 2015
Earnings Per Share [Abstract]                      
Net earnings $ 201 $ (10) $ 117 $ 46 $ 180 $ 81 $ 211 $ 128 $ 354 $ 600 $ 720
Basic (in shares)                 173.2 186.3 190.0
Dilutive effect of common stock equivalents (in shares)                 2.4 3.8 3.6
Diluted (in shares)                 175.6 190.1 193.6
Earnings per basic share (in dollars per share) $ 1.17 $ (0.06) $ 0.67 $ 0.27 $ 1.01 $ 0.43 $ 1.11 $ 0.67 $ 2.05 $ 3.22 $ 3.79
Earnings per diluted share (in dollars per share) $ 1.15 [2] $ (0.06) [2] $ 0.67 [2] $ 0.26 [2] $ 1.00 $ 0.42 $ 1.09 $ 0.66 $ 2.02 $ 3.15 $ 3.72
Anti-dilutive stock options and other equity instruments                 8.0 2.3 2.1
[1] Quarterly totals may not foot across due to rounding.
[2] Due to the anti-dilutive effect resulting from the reported net loss in the third quarter of 2016, the impact of potentially dilutive securities on the weighted-average shares outstanding has been omitted from the quarterly calculation of loss per diluted share. The impact of these potentially dilutive securities has been included in the calculation of weighted-average shares for all other periods in 2016.