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Financing (Detail Of Debt Repayments) (Details) - USD ($) $ in Millions |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Aug. 15, 2016 | Aug. 17, 2015 | Nov. 18, 2014 | Jan. 28, 2017 | Jan. 30, 2016 | Jan. 31, 2015
Extinguishment of debt |  |  | $ 407 |  |  |
Debt repaid |  |  |  | $ 751 | $ 152 | $ 870
8.125% Senior Debentures Due 2035 [Member] |  |  |  |  |  |
Extinguishment of debt | $ 108 | $ 76 |  | $ 0 | 76 | 0
Debt instrument interest rate, stated percentage | 7.875% | 8.125% |  | 8.125% |  |
5.75% Senior Notes due 2014 [Member] |  |  |  |  |  |
Extinguishment of debt |  |  |  | $ 0 | 0 | 453
Debt instrument interest rate, stated percentage |  |  |  | 5.75% |  |
7.625% Senior Debentures Due 2013 [Member] |  |  |  |  |  |
Extinguishment of debt |  |  |  | $ 0 | 0 | 407
Debt instrument interest rate, stated percentage |  |  |  | 7.875% |  |
9.5% Amortizing Debentures Due 2021 [Member] |  |  |  |  |  |
Extinguishment of debt |  |  |  | $ 4 | 4 | 4
Debt instrument interest rate, stated percentage |  |  |  | 9.50% |  |
9.75% Amortizing Debentures Due 2021 [Member] |  |  |  |  |  |
Extinguishment of debt |  |  |  | $ 2 | 3 | 2
Debt instrument interest rate, stated percentage |  |  |  | 9.75% |  |
Capital Lease and Other Long-Term Obligations [Member] |  |  |  |  |  |
Extinguishment of debt |  |  |  | $ 1 | 0 | 4
5.90% Senior Notes Due 2016 [Member] |  |  |  |  |  |
Extinguishment of debt |  |  |  | $ 577 | 0 | 0
Debt instrument interest rate, stated percentage |  |  |  | 5.90% |  |
7.875% Senior Notes Due 2015 [Member] |  |  |  |  |  |
Extinguishment of debt |  |  |  | $ 108 | 0 | 0
Debt instrument interest rate, stated percentage |  |  |  | 7.875% |  |
7.5% Senior Debentures Due 2015 [Member] |  |  |  |  |  |
Extinguishment of debt |  |  |  | $ 0 | 69 | 0
Debt instrument interest rate, stated percentage |  |  |  | 7.50% |  |
7.45% Senior Debentures Due 2016 [Member] |  |  |  |  |  |
Extinguishment of debt |  |  |  | $ 59 | $ 0 | $ 0
Debt instrument interest rate, stated percentage |  |  |  | 7.45% |  |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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