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Fair Value Measurements (Carrying Value And Fair Value Of Long-Term Debt, Disclosure) (Detail) - USD ($) $ in Millions | Apr. 29, 2017 | Jan. 28, 2017 | Apr. 30, 2016
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Fair Value Measurements |  |  |  |
Principal Value |  | $ 5,750 | $ 5,750 | $ 5,750
Fair Value (a) | [1] | $ 5,992 | $ 6,030 | $ 6,372
[1] | The estimated fair value of the Company’s publicly traded debt is based on reported transaction prices which are considered Level 2 inputs in accordance with ASC Topic 820, Fair Value Measurement. The estimates presented are not necessarily indicative of the amounts that the Company could realize in a current market exchange.

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- Definition Long-term Debt Principal Value + References No definition available. + Details
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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13476-108611 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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