Earnings Per Share (Computation Of Basic and Diluted Earnings Per Share) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Nov. 02, 2013	Oct. 27, 2012	Nov. 02, 2013	Oct. 27, 2012
Earnings Per Share [Abstract]
Net income (loss)	$ 177	$ 145	$ 675	$ 605
Net income available to common stockholders, basic	177	145	675	605
Net income available to common stockholders, diluted	$ 177	$ 145	$ 675	$ 605
Basic earnings per share	$ 0.47	$ 0.36	$ 1.77	$ 1.48
Diluted earnings per share	$ 0.47	$ 0.36	$ 1.74	$ 1.45
Average number of shares issued, basic	373.9	400.3	380.8	408.7
Shares to be issued under deferred compensation and other plans	0.9	1.0	1.0	1.2
Average number of shares outstanding, basic	374.8	401.3	381.8	409.9
Effect of dilutive securities-stock options, restricted stock and restricted stock units	5.4	6.6	6.2	6.6
Average number of shares outstanding, diluted	380.2	407.9	388.0	416.5