Accounts Receivable (Activity In The Allowance For Credit Losses) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Nov. 02, 2013	Oct. 27, 2012	Nov. 02, 2013	Oct. 27, 2012
Accounts Receivable, Net [Abstract]
Allowance at beginning of period	$ 85	$ 105	$ 85	$ 115
Bad debt provision	14	7	44	38
Write-offs	(19)	(22)	(61)	(76)
Recoveries	5	5	17	18
Allowance at end of period	$ 85	$ 95	$ 85	$ 95