Financing Activities (Detail Of Debt Repayments) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012
Debt repaid	$ 7	$ 797
5.35% Senior Notes Due 2012 [Member]
Extinguishment of debt	0	616
8.0% Senior Debentures Due 2012 [Member]
Extinguishment of debt	0	173
9.5% Amortizing Debentures due Two Thousand Twenty One [Member]
Extinguishment of debt	2	2
9.75% Amortizing Debentures Due Two Thousand Twenty One [Member]
Extinguishment of debt	1	1
Capital Lease and Other Long-Term Obligations [Member]
Extinguishment of debt	$ 4	$ 5