Financing (Detail Of Debt Repayments) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Jan. 31, 2015	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Extinguishment of debt	$ 407
Debt repaid		870	124	1,803
5.90% Senior Notes Due 2016 [Member]
Extinguishment of debt		0	0	400
7.875% Senior Notes Due 2015 [Member]
Extinguishment of debt		407	0	205
7.45% Senior Debentures Due 2016 [Member]
Extinguishment of debt		0	0	64
7.5% Senior Debentures Due 2015 [Member]
Extinguishment of debt		0	0	31
Five point seven five percent senior notes due 2014[Member] [Member]
Extinguishment of debt		453	0	0
7.625% Senior Debentures Due 2013 [Member]
Extinguishment of debt		0	109	0
5.35% Senior Notes Due 2012 [Member]
Extinguishment of debt		0	0	616
5.875% Senior Notes Due 2013 [Member]
Extinguishment of debt		0	0	298
8.0% Senior Debentures Due 2012 [Member]
Extinguishment of debt		0	0	173
9.5% Amortizing Debentures Due 2021 [Member]
Extinguishment of debt		4	4	4
9.75% Amortizing Debentures Due 2021 [Member]
Extinguishment of debt		2	2	2
Capital Lease and Other Long-Term Obligations [Member]
Extinguishment of debt		$ 4	$ 9	$ 10