Financing Activities (Detail Of Debt Repayments) (Details) - USD ($) $ in Millions	6 Months Ended
	Aug. 01, 2015	Aug. 02, 2014
Debt repaid	$ 72	$ 459
Seven Point Five Percent Senior Debentures Due Two Thousand Fifteen [Member]
Extinguishment of debt	69	0
Five point seven five percent senior notes due 2014[Member]
Extinguishment of debt	0	453
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	$ 0	$ 3