Financing Activities (Detail Of Debt Repayments) (Details) - USD ($) $ in Millions	3 Months Ended
	May 05, 2018	Apr. 29, 2017
Debt Instrument, Repurchased Face Amount		$ 146
Debt repaid	$ 3	152
Repayments of Debt		149
9.5% Amortizing Debentures due 2021
Extinguishment of debt	2	2
9.75% Amortizing Debentures Due 2021
Extinguishment of debt	1	1
6.375% Senior Notes Due 2037
Extinguishment of debt	0	135
6.7% Senior Debentures Due 2034
Extinguishment of debt	$ 0	$ 11