401(k) And Profit Sharing (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 28, 2012	Jan. 29, 2011	Jan. 30, 2010
401(k) And Profit Sharing [Abstract]
Profit sharing component and matching contributions to 401(k) plan expense	$ 88	$ 86	$ 74