Income and Other Taxes (Details) (USD $) In Billions, unless otherwise specified	3 Months Ended		6 Months Ended
	Aug. 03, 2012	Jul. 29, 2011	Aug. 03, 2012	Jul. 29, 2011	Feb. 03, 2012
Income Tax Disclosure [Abstract]
Effective Income Tax Rate, Continuing Operations	12.70%	18.40%	16.10%	18.80%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate			35.00%
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 2.7		$ 2.7		$ 2.6