Financing (Detail Of Debt Repayments) (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended		12 Months Ended
	Feb. 01, 2020	Feb. 02, 2019	Feb. 03, 2018	Nov. 03, 2018	Oct. 28, 2017	Feb. 01, 2020	Feb. 02, 2019	Feb. 03, 2018
Extinguishment of debt	$ 525	$ 750	$ 400	$ 344	$ 247
Debt Instrument, Repurchase Amount	553	789	423	354	257	$ 553	$ 789	$ 423
Gains (losses) on early retirement of debt	(30)	(28)	11	$ (5)	$ (1)	(30)	(33)	10
Debt repaid						567	1,101	954
seven point four five senior debentures due 2017 [Member]
Extinguishment of debt						0	0	300
8.5% Senior Debentures Due 2019 [Member]
Extinguishment of debt						36	0	0
4.375% Senior notes due 2023 [Member]
Extinguishment of debt	$ 190					$ 190	0	0
Debt instrument interest rate, stated percentage	4.375%					4.375%
6.9% senior debentures due 2029 [Member]
Extinguishment of debt	$ 113	$ 114				$ 113	$ 204	3
Debt instrument interest rate, stated percentage	6.90%	6.90%				6.90%	6.90%
4.5% Senior notes due 2034 [Member]
Extinguishment of debt		$ 103				$ 0	$ 183	0
Debt instrument interest rate, stated percentage		4.50%					4.50%
7.0% senior debentures due 2028 [Member]
Extinguishment of debt	$ 12	$ 155				$ 12	$ 182	2
Debt instrument interest rate, stated percentage	7.00%	7.00%				7.00%	7.00%
6.65% senior debentures due 2024 [Member]
Extinguishment of debt		$ 164				$ 0	$ 175	4
Debt instrument interest rate, stated percentage	6.65%	6.65%				6.65%	6.65%
6.7% senior notes due 2028 [Member]
Extinguishment of debt						$ 0	$ 94	3
6.79% Senior Debentures Due 2027 [Member]
Extinguishment of debt		$ 94				$ 0	$ 94	0
Debt instrument interest rate, stated percentage	6.79%	6.79%				6.79%	6.79%
6.375% Senior notes due 2037 [Member]
Extinguishment of debt		$ 34	$ 96			$ 0	$ 77	$ 231
Debt instrument interest rate, stated percentage	6.375%	6.375%	6.375%			6.375%	6.375%	6.375%
6.7% Senior debentures due 2034 [Member]
Extinguishment of debt		$ 35	$ 108			$ 0	$ 63	$ 136
Debt instrument interest rate, stated percentage	6.70%	6.70%	6.70%			6.70%	6.70%	6.70%
6.9% senior debentures due 2032 [Member]
Extinguishment of debt						$ 0	$ 15	$ 219
8.75% Senior Debentures Due 2029 [Member]
Extinguishment of debt		$ 5	$ 43			$ 0	$ 5	$ 43
Debt instrument interest rate, stated percentage	8.75%	8.75%	8.75%			8.75%	8.75%	8.75%
7.875% Senior Debentures Due 2030 [Member]
Extinguishment of debt		$ 2	$ 6			$ 0	$ 2	$ 6
Debt instrument interest rate, stated percentage	7.875%	7.875%	7.875%			7.875%	7.875%	7.875%
9.5% Amortizing Debentures Due 2021 [Member]
Extinguishment of debt						$ 4	$ 4	$ 4
Debt instrument interest rate, stated percentage	9.50%					9.50%
9.75% Amortizing Debentures Due 2021 [Member]
Extinguishment of debt						$ 2	2	2
Debt instrument interest rate, stated percentage	9.75%					9.75%
Capital Lease and Other Long-Term Obligations [Member]
Extinguishment of debt						$ 0	1	1
3.875% Senior notes due 2022 [Member]
Extinguishment of debt	$ 100					$ 100	0	0
Debt instrument interest rate, stated percentage	3.875%					3.875%
2.875% Senior notes due 2023 [Member]
Extinguishment of debt	$ 110					$ 110	$ 0	$ 0
Debt instrument interest rate, stated percentage	2.875%					2.875%