Financing (Detail Of Debt Repayments) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Feb. 02, 2019	Feb. 03, 2018	Nov. 03, 2018	Oct. 28, 2017	Feb. 02, 2019	Feb. 03, 2018	Jan. 28, 2017
Extinguishment of debt	$ 750	$ 400	$ 344	$ 247
Debt Instrument, Repurchase Amount	789	423	354	257	$ 789	$ 423
Gains (losses) on early retirement of debt	$ (28)	11	$ (5)	$ (1)	(33)	10	$ 0
Debt repaid					1,101	954	751
seven point four five senior debentures due 2017 [Member]
Extinguishment of debt					$ 0	300	0
Debt instrument interest rate, stated percentage	7.45%				7.45%
Five Point Nine Percent Senior Notes Due Two Thousand Sixteen [Member]
Extinguishment of debt					$ 0	0	577
Debt instrument interest rate, stated percentage	5.90%				5.90%
Seven Point Four Five Percent Senior Debentures Due Two Thousand Sixteen [Member]
Extinguishment of debt					$ 0	0	59
Debt instrument interest rate, stated percentage	7.45%				7.45%
6.9% senior debentures due 2029 [Member]
Extinguishment of debt	$ 114				$ 204	3	0
Debt instrument interest rate, stated percentage	6.90%				6.90%
4.5% Senior notes due 2034 [Member]
Extinguishment of debt	$ 103				$ 183	0	0
Debt instrument interest rate, stated percentage	4.50%				4.50%
7.0% senior debentures due 2028 [Member]
Extinguishment of debt	$ 155				$ 182	2	0
Debt instrument interest rate, stated percentage	7.00%				7.00%
6.65% senior debentures due 2024 [Member]
Extinguishment of debt	$ 164				$ 175	4	0
Debt instrument interest rate, stated percentage	6.65%				6.65%
6.7% senior debentures due 2028 [Member]
Extinguishment of debt					$ 94	3	0
6.79% Senior Debentures Due 2027 [Member]
Extinguishment of debt	$ 94				$ 94	0	0
Debt instrument interest rate, stated percentage	6.79%				6.79%
Six Point Three Seven Five Percent Senior Notes Due Two Thousand Thirty Seven [Member]
Extinguishment of debt	$ 34	$ 96			$ 77	$ 231	0
Debt instrument interest rate, stated percentage	6.375%	6.375%			6.375%	6.375%
Six Point Seven Percent Senior Debentures Due Two Thousand Thirty Four [Member]
Extinguishment of debt	$ 35	$ 108			$ 63	$ 136	0
Debt instrument interest rate, stated percentage	6.70%	6.70%			6.70%	6.70%
6.9% senior debentures due 2032 [Member]
Extinguishment of debt					$ 15	$ 219	0
Eight Point Seven Five Percent Senior Debentures Due Two Thousand Twenty Nine [Member]
Extinguishment of debt	$ 5	$ 43			$ 5	$ 43	0
Debt instrument interest rate, stated percentage	8.75%	8.75%			8.75%	8.75%
Seven Point Eight Seven Five Percent Senior Debentures Due Two Thousand Thirty [Member]
Extinguishment of debt	$ 2	$ 6			$ 2	$ 6	0
Debt instrument interest rate, stated percentage	7.875%	7.875%			7.875%	7.875%
Seven Point Eight Seven Five Percent Senior Notes Due Two Thousand Thirty-Six [Member]
Extinguishment of debt					$ 0	$ 0	108
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					$ 1	$ 1	$ 1