Income Taxes (Components Of Income Tax Expense) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 28, 2012	Jan. 29, 2011	Jan. 30, 2010
Income Taxes [Abstract]
Federal	$ 359	$ 324	$ 275
State and local	63	52	38
Total current income tax expense	422	376	313
Deferred income taxes, Current	7	2	(28)
Deferred income taxes, Non-current	7		(30)
Total deferred income tax expense (benefit)	14	2	(58)
Total income tax expense	$ 436	$ 378	$ 255