Income and Other Taxes (Details) (USD $) In Billions, unless otherwise specified	3 Months Ended		9 Months Ended
	Nov. 02, 2012	Oct. 28, 2011	Nov. 02, 2012	Oct. 28, 2011	Feb. 03, 2012
Income Tax Disclosure [Abstract]
Effective Income Tax Rate, Continuing Operations	13.80%	16.70%	15.50%	18.20%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate			35.00%
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 2.8		$ 2.8		$ 2.6