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Financing Activities (Detail Of Debt Repayments) (Details) - USD ($) $ in Millions | 9 Months Ended
--- | ---
Oct. 28, 2017 | Oct. 29, 2016
Extinguishment of debt | $ 247 |
Debt repaid | 554 | $ 174
seven point four five senior debentures due 2017 [Member] |  |
Extinguishment of debt | 300 | 0
7.45% Senior notes due 2016 [Member] |  |
Extinguishment of debt | 0 | 59
7.875% senior debentures [Member] |  |
Extinguishment of debt | 0 | 108
9.5% Amortizing Debentures due 2021 |  |
Extinguishment of debt | 4 | 4
9.75% Amortizing Debentures Due 2021 |  |
Extinguishment of debt | 2 | 2
Capital Lease and Other Long-Term Obligations [Member] |  |
Extinguishment of debt | 1 | 1
6.375% Senior Notes Due 2037 |  |
Extinguishment of debt | 135 | 0
6.9% senior debentures due 2032 |  |
Extinguishment of debt | 72 | 0
6.7% Senior Debentures Due 2034 |  |
Extinguishment of debt | 28 | 0
6.65% senior debentures due 2024 |  |
Extinguishment of debt | 4 | 0
6.9% senior debentures due 2029 |  |
Extinguishment of debt | 3 | 0
6.7% senior debentures due 2028 |  |
Extinguishment of debt | 3 | 0
7.0% senior debentures due 2028 |  |
Extinguishment of debt | $ 2 | $ 0

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