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Financing Activities (Detail Of Debt Repayments) (Details) - USD ($) $ in Millions | 3 Months Ended
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May 05, 2018 | Apr. 29, 2017
Debt Instrument, Repurchased Face Amount |  | $ 146
Debt repaid | $ 3 | 152
Repayments of Debt |  | 149
9.5% Amortizing Debentures due 2021 |  |
Extinguishment of debt | 2 | 2
9.75% Amortizing Debentures Due 2021 |  |
Extinguishment of debt | 1 | 1
6.375% Senior Notes Due 2037 |  |
Extinguishment of debt | 0 | 135
6.7% Senior Debentures Due 2034 |  |
Extinguishment of debt | $ 0 | $ 11

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- Definition Face (par) amount of the original debt instrument that was repurchased. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Gross amount of debt extinguished. + References No definition available. + Details
Name: | us-gaap_ExtinguishmentOfDebtAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations. + References No definition available. + Details
Name: | us-gaap_RepaymentsOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The cash outflow during the period from the repayment of aggregate short-term and long-term debt and payment of capital lease obligations. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: |
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- Details
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- Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |