Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Oct. 28, 2017	Oct. 29, 2016	Oct. 28, 2017	Oct. 29, 2016
Numerator
Net earnings from continuing operations	$ 238	$ 192	$ 635	$ 600
Denominator
Weighted-average common shares outstanding (in shares)	299.1	316.2	304.1	320.2
Effect of potentially dilutive securities:
Nonvested share awards (in shares)	6.3	3.8	6.5	3.4
Weighted-average common shares outstanding, assuming dilution (in shares)	305.4	320.0	310.6	323.6
Net earnings per share from continuing operations
Basic (in dollars per share)	$ 0.80	$ 0.61	$ 2.09	$ 1.87
Diluted (in dollars per share)	$ 0.78	$ 0.60	$ 2.05	$ 1.85
Antidilutive securities excluded from computation of earnings per share	0.0	6.3	0.0	6.9