Earnings Per Share (Computation Of Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Aug. 01, 2015	Aug. 02, 2014	Aug. 01, 2015	Aug. 02, 2014
Earnings Per Share [Abstract]
Net income (loss)	$ 217	$ 292	$ 410	$ 516
Net income available to common stockholders, basic	217	292	410	516
Net income available to common stockholders, diluted	$ 217	$ 292	$ 410	$ 516
Basic earnings per share	$ 0.65	$ 0.81	$ 1.21	$ 1.42
Diluted earnings per share	$ 0.64	$ 0.80	$ 1.19	$ 1.40
Average number of shares issued, basic	334.9	358.3	337.3	361.5
Shares to be issued under deferred compensation and other plans	0.8	0.9	0.9	1.0
Average number of shares outstanding, basic	335.7	359.2	338.2	362.5
Effect of dilutive securities-stock options, restricted stock and restricted stock units	5.3	6.2	5.5	6.5
Average number of shares outstanding, diluted	341.0	365.4	343.7	369.0