Financing Activities (Detail Of Debt Repayments) (Details) - USD ($) $ in Millions	6 Months Ended
	Aug. 03, 2019	Aug. 04, 2018
Extinguishment of debt		$ 344
Repayments of Debt	$ 39	347
8.5% Senior Debentures due 2019 [Member]
Extinguishment of debt	36	0
6.9% Senior debentures due 2029 [Member]
Extinguishment of debt	0	90
4.5% Senior notes due 2034 [Member]
Extinguishment of debt	0	80
6.7% Senior notes due 2028 [Member]
Extinguishment of debt	0	60
6.375% Senior notes due 2037 [Member]
Extinguishment of debt	0	43
6.7% Senior debentures due 2034 [Member]
Extinguishment of debt	0	28
7.0% Senior debentures due 2028 [Member]
Extinguishment of debt	0	27
6.65% Senior debentures due 2024 [Member]
Extinguishment of debt	0	11
6.9% Senior debentures due 2032 [Member]
Extinguishment of debt	0	5
9.5% Amortizing debentures due 2021 [Member]
Extinguishment of debt	2	2
9.75% Amortizing debentures due 2021 [Member]
Extinguishment of debt	$ 1	$ 1