Accounts Receivable (Activity In The Allowance For Credit Losses) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012	Aug. 03, 2013	Jul. 28, 2012
Accounts Receivable, Net [Abstract]
Allowance at beginning of period	$ 85	$ 105	$ 85	$ 115
Bad debt provision	16	22	30	31
Write-offs	(21)	(28)	(42)	(54)
Recoveries	5	6	12	13
Allowance at end of period	$ 85	$ 105	$ 85	$ 105