<?xml version='1.0' encoding='UTF-8'?>
<FilingSummary>
  <Version>3.5.0.2</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>767</ContextCount>
  <ElementCount>556</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>218</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>8</UnitCount>
  <MyReports>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0001000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/DocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>1001000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/CondensedConsolidatedStatementsOfFinancialPosition</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>1001001 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION - Parenthetical</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/CondensedConsolidatedStatementsOfFinancialPositionParenthetical</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION - Parenthetical</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>1002000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/CondensedConsolidatedStatementsOfIncomeLoss</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>1003000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeLoss</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>1003001 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - Parenthetical</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeLossParenthetical</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - Parenthetical</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>1004000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/CondensedConsolidatedStatementsOfCashFlows</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>1005000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY Statement</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/CondensedConsolidatedStatementsOfStockholdersEquityStatement</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY Statement</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>2104100 - Disclosure - EMC MERGER TRANSACTION, OTHER TRANSACTIONS AND BASIS OF PRESENTATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/EmcMergerTransactionOtherTransactionsAndBasisOfPresentation</Role>
      <ShortName>EMC MERGER TRANSACTION, OTHER TRANSACTIONS AND BASIS OF PRESENTATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>2107100 - Disclosure - INTERIM UPDATE TO SUMMARY SIGNIFICANT ACCOUNTING POLICIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/InterimUpdateToSummarySignificantAccountingPolicies</Role>
      <ShortName>INTERIM UPDATE TO SUMMARY SIGNIFICANT ACCOUNTING POLICIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>2110100 - Disclosure - BUSINESS COMBINATIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/BusinessCombinations</Role>
      <ShortName>BUSINESS COMBINATIONS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>2113100 - Disclosure - DISCONTINUED OPERATIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/DiscontinuedOperations</Role>
      <ShortName>DISCONTINUED OPERATIONS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>2116100 - Disclosure - FAIR VALUE MEASUREMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/FairValueMeasurements</Role>
      <ShortName>FAIR VALUE MEASUREMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>2119100 - Disclosure - INVESTMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/Investments</Role>
      <ShortName>INVESTMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>2122100 - Disclosure - FINANCIAL SERVICES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/FinancialServices</Role>
      <ShortName>FINANCIAL SERVICES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>2125100 - Disclosure - DEBT</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/Debt</Role>
      <ShortName>DEBT</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>2128100 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/DerivativeInstrumentsAndHedgingActivities</Role>
      <ShortName>DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>2131100 - Disclosure - GOODWILL AND INTANGIBLE ASSETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/GoodwillAndIntangibleAssets</Role>
      <ShortName>GOODWILL AND INTANGIBLE ASSETS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>2134100 - Disclosure - WARRANTY LIABILITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/WarrantyLiability</Role>
      <ShortName>WARRANTY LIABILITY</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>2140100 - Disclosure - COMMITMENTS AND CONTINGENCIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/CommitmentsAndContingencies</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>2143100 - Disclosure - INCOME AND OTHER TAXES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/IncomeAndOtherTaxes</Role>
      <ShortName>INCOME AND OTHER TAXES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>2146100 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/AccumulatedOtherComprehensiveLoss</Role>
      <ShortName>ACCUMULATED OTHER COMPREHENSIVE LOSS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>2147100 - Disclosure - NON-CONTROLLING INTERESTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/NonControllingInterests</Role>
      <ShortName>NON-CONTROLLING INTERESTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>2148100 - Disclosure - EARNINGS (LOSS) PER SHARE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/EarningsLossPerShare</Role>
      <ShortName>EARNINGS (LOSS) PER SHARE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>2149100 - Disclosure - CAPITALIZATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/Capitalization</Role>
      <ShortName>CAPITALIZATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>2150100 - Disclosure - STOCK-BASED COMPENSATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/StockBasedCompensation</Role>
      <ShortName>STOCK-BASED COMPENSATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>2151100 - Disclosure - REDEEMABLE SHARES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/RedeemableShares</Role>
      <ShortName>REDEEMABLE SHARES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>2152100 - Disclosure - SEGMENT INFORMATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/SegmentInformation</Role>
      <ShortName>SEGMENT INFORMATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>2153100 - Disclosure - SUPPLEMENTAL CONSOLIDATED FINANCIAL INFORMATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/SupplementalConsolidatedFinancialInformation</Role>
      <ShortName>SUPPLEMENTAL CONSOLIDATED FINANCIAL INFORMATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>2154100 - Disclosure - SUBSEQUENT EVENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/SubsequentEvents</Role>
      <ShortName>SUBSEQUENT EVENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>2207201 - Disclosure - INTERIM UPDATE TO SUMMARY SIGNIFICANT ACCOUNTING POLICIES (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/InterimUpdateToSummarySignificantAccountingPoliciesPolicies</Role>
      <ShortName>INTERIM UPDATE TO SUMMARY SIGNIFICANT ACCOUNTING POLICIES (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>2310301 - Disclosure - BUSINESS COMBINATIONS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/BusinessCombinationsTables</Role>
      <ShortName>BUSINESS COMBINATIONS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dell.com/role/BusinessCombinations</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>2313301 - Disclosure - DISCONTINUED OPERATIONS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/DiscontinuedOperationsTables</Role>
      <ShortName>DISCONTINUED OPERATIONS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dell.com/role/DiscontinuedOperations</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>2316301 - Disclosure - FAIR VALUE MEASUREMENTS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/FairValueMeasurementsTables</Role>
      <ShortName>FAIR VALUE MEASUREMENTS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dell.com/role/FairValueMeasurements</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>2319301 - Disclosure - INVESTMENTS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/InvestmentsTables</Role>
      <ShortName>INVESTMENTS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dell.com/role/Investments</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>2322301 - Disclosure - FINANCIAL SERVICES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/FinancialServicesTables</Role>
      <ShortName>FINANCIAL SERVICES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dell.com/role/FinancialServices</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>2325301 - Disclosure - DEBT (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/DebtTables</Role>
      <ShortName>DEBT (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dell.com/role/Debt</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>2328301 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/DerivativeInstrumentsAndHedgingActivitiesTables</Role>
      <ShortName>DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dell.com/role/DerivativeInstrumentsAndHedgingActivities</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>2331301 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/GoodwillAndIntangibleAssetsTables</Role>
      <ShortName>GOODWILL AND INTANGIBLE ASSETS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dell.com/role/GoodwillAndIntangibleAssets</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>2334301 - Disclosure - WARRANTY LIABILITY (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/WarrantyLiabilityTables</Role>
      <ShortName>WARRANTY LIABILITY (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dell.com/role/WarrantyLiability</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>2346301 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/AccumulatedOtherComprehensiveLossTables</Role>
      <ShortName>ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dell.com/role/AccumulatedOtherComprehensiveLoss</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>2347301 - Disclosure - NON-CONTROLLING INTERESTS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/NonControllingInterestsTables</Role>
      <ShortName>NON-CONTROLLING INTERESTS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dell.com/role/NonControllingInterests</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>2348301 - Disclosure - EARNINGS (LOSS) PER SHARE (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/EarningsLossPerShareTables</Role>
      <ShortName>EARNINGS (LOSS) PER SHARE (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dell.com/role/EarningsLossPerShare</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>2349301 - Disclosure - CAPITALIZATION (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/CapitalizationTables</Role>
      <ShortName>CAPITALIZATION (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dell.com/role/Capitalization</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>2350301 - Disclosure - STOCK-BASED COMPENSATION (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/StockBasedCompensationTables</Role>
      <ShortName>STOCK-BASED COMPENSATION (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dell.com/role/StockBasedCompensation</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>2352301 - Disclosure - SEGMENT INFORMATION (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/SegmentInformationTables</Role>
      <ShortName>SEGMENT INFORMATION (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dell.com/role/SegmentInformation</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>2353301 - Disclosure - SUPPLEMENTAL CONSOLIDATED FINANCIAL INFORMATION (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/SupplementalConsolidatedFinancialInformationTables</Role>
      <ShortName>SUPPLEMENTAL CONSOLIDATED FINANCIAL INFORMATION (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dell.com/role/SupplementalConsolidatedFinancialInformation</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>2404401 - Disclosure - EMC MERGER TRANSACTION, OTHER TRANSACTIONS AND BASIS OF PRESENTATION - Divestitures (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/EmcMergerTransactionOtherTransactionsAndBasisOfPresentationDivestituresDetails</Role>
      <ShortName>EMC MERGER TRANSACTION, OTHER TRANSACTIONS AND BASIS OF PRESENTATION - Divestitures (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dell.com/role/EmcMergerTransactionOtherTransactionsAndBasisOfPresentation</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>2404402 - Disclosure - EMC MERGER TRANSACTION, OTHER TRANSACTIONS AND BASIS OF PRESENTATION - SecureWorks Initial Public Offering (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/EmcMergerTransactionOtherTransactionsAndBasisOfPresentationSecureworksInitialPublicOfferingDetails</Role>
      <ShortName>EMC MERGER TRANSACTION, OTHER TRANSACTIONS AND BASIS OF PRESENTATION - SecureWorks Initial Public Offering (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>2407402 - Disclosure - INTERIM UPDATE TO SUMMARY SIGNIFICANT ACCOUNTING POLICIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/InterimUpdateToSummarySignificantAccountingPoliciesDetails</Role>
      <ShortName>INTERIM UPDATE TO SUMMARY SIGNIFICANT ACCOUNTING POLICIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dell.com/role/InterimUpdateToSummarySignificantAccountingPoliciesPolicies</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>2410402 - Disclosure - BUSINESS COMBINATIONS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/BusinessCombinationsDetails</Role>
      <ShortName>BUSINESS COMBINATIONS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dell.com/role/BusinessCombinationsTables</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>2410403 - Disclosure - BUSINESS COMBINATIONS - Fair Value of Consideration Transferred (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/BusinessCombinationsFairValueOfConsiderationTransferredDetails</Role>
      <ShortName>BUSINESS COMBINATIONS - Fair Value of Consideration Transferred (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>2410404 - Disclosure - BUSINESS COMBINATIONS - Assets Acquired and Liabilities Assumed (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/BusinessCombinationsAssetsAcquiredAndLiabilitiesAssumedDetails</Role>
      <ShortName>BUSINESS COMBINATIONS - Assets Acquired and Liabilities Assumed (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>2410405 - Disclosure - BUSINESS COMBINATIONS - Intangible Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/BusinessCombinationsIntangibleAssetsDetails</Role>
      <ShortName>BUSINESS COMBINATIONS - Intangible Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>2410406 - Disclosure - BUSINESS COMBINATIONS - Acquisition-related Expenses (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/BusinessCombinationsAcquisitionRelatedExpensesDetails</Role>
      <ShortName>BUSINESS COMBINATIONS - Acquisition-related Expenses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>2410407 - Disclosure - BUSINESS COMBINATIONS - Proforma (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/BusinessCombinationsProformaDetails</Role>
      <ShortName>BUSINESS COMBINATIONS - Proforma (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>2410408 - Disclosure - BUSINESS COMBINATIONS - Defined Benefit Pension Plan (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/BusinessCombinationsDefinedBenefitPensionPlanDetails</Role>
      <ShortName>BUSINESS COMBINATIONS - Defined Benefit Pension Plan (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>2413402 - Disclosure - DISCONTINUED OPERATIONS - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/DiscontinuedOperationsNarrativeDetails</Role>
      <ShortName>DISCONTINUED OPERATIONS - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>2413403 - Disclosure - DISCONTINUED OPERATIONS - Key financial results of the Services business (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/DiscontinuedOperationsKeyFinancialResultsOfServicesBusinessDetails</Role>
      <ShortName>DISCONTINUED OPERATIONS - Key financial results of the Services business (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>2413404 - Disclosure - DISCONTINUED OPERATIONS - Major classes of assets and liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/DiscontinuedOperationsMajorClassesOfAssetsAndLiabilitiesDetails</Role>
      <ShortName>DISCONTINUED OPERATIONS - Major classes of assets and liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>2413405 - Disclosure - DISCONTINUED OPERATIONS - Significant cash flow items (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/DiscontinuedOperationsSignificantCashFlowItemsDetails</Role>
      <ShortName>DISCONTINUED OPERATIONS - Significant cash flow items (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>2416402 - Disclosure - FAIR VALUE MEASUREMENTS - Company's hierarchy for its assets and liabilities measured at fair value on a recurring basis (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/FairValueMeasurementsCompanysHierarchyForItsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails</Role>
      <ShortName>FAIR VALUE MEASUREMENTS - Company's hierarchy for its assets and liabilities measured at fair value on a recurring basis (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>2416403 - Disclosure - FAIR VALUE MEASUREMENTS - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/FairValueMeasurementsNarrativeDetails</Role>
      <ShortName>FAIR VALUE MEASUREMENTS - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>2416404 - Disclosure - FAIR VALUE MEASUREMENTS - Carrying value and estimated fair value of outstanding debt (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/FairValueMeasurementsCarryingValueAndEstimatedFairValueOfOutstandingDebtDetails</Role>
      <ShortName>FAIR VALUE MEASUREMENTS - Carrying value and estimated fair value of outstanding debt (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>2419402 - Disclosure - INVESTMENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/InvestmentsDetails</Role>
      <ShortName>INVESTMENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dell.com/role/InvestmentsTables</ParentRole>
      <Position>65</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>2419403 - Disclosure - INVESTMENTS - Contractual Maturities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/InvestmentsContractualMaturitiesDetails</Role>
      <ShortName>INVESTMENTS - Contractual Maturities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>2422402 - Disclosure - FINANCIAL SERVICES - Financing Receivables Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/FinancialServicesFinancingReceivablesNarrativeDetails</Role>
      <ShortName>FINANCIAL SERVICES - Financing Receivables Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>2422403 - Disclosure - FINANCIAL SERVICES - Financing Receivables (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/FinancialServicesFinancingReceivablesDetails</Role>
      <ShortName>FINANCIAL SERVICES - Financing Receivables (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>2422404 - Disclosure - FINANCIAL SERVICES - Changes in Allowance for financing receivable (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/FinancialServicesChangesInAllowanceForFinancingReceivableDetails</Role>
      <ShortName>FINANCIAL SERVICES - Changes in Allowance for financing receivable (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>2422405 - Disclosure - FINANCIAL SERVICES - Aging (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/FinancialServicesAgingDetails</Role>
      <ShortName>FINANCIAL SERVICES - Aging (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>2422406 - Disclosure - FINANCIAL SERVICES - Credit Quality (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/FinancialServicesCreditQualityDetails</Role>
      <ShortName>FINANCIAL SERVICES - Credit Quality (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>2422407 - Disclosure - FINANCIAL SERVICES - Securitizations and Structured Financing Debt (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/FinancialServicesSecuritizationsAndStructuredFinancingDebtDetails</Role>
      <ShortName>FINANCIAL SERVICES - Securitizations and Structured Financing Debt (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>2422408 - Disclosure - FINANCIAL SERVICES - Securitizations and Structured Financing Debt Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/FinancialServicesSecuritizationsAndStructuredFinancingDebtNarrativeDetails</Role>
      <ShortName>FINANCIAL SERVICES - Securitizations and Structured Financing Debt Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>2425402 - Disclosure - DEBT - Outstanding debt (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/DebtOutstandingDebtDetails</Role>
      <ShortName>DEBT - Outstanding debt (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>74</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>2425403 - Disclosure - DEBT - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/DebtNarrativeDetails</Role>
      <ShortName>DEBT - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>2425404 - Disclosure - DEBT - Aggregate future maturities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/DebtAggregateFutureMaturitiesDetails</Role>
      <ShortName>DEBT - Aggregate future maturities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>76</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>2428402 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/DerivativeInstrumentsAndHedgingActivitiesNarrativeDetails</Role>
      <ShortName>DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>77</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>2428403 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Notional Amounts of Outstanding Derivative Instruments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/DerivativeInstrumentsAndHedgingActivitiesNotionalAmountsOfOutstandingDerivativeInstrumentsDetails</Role>
      <ShortName>DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Notional Amounts of Outstanding Derivative Instruments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>2428404 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Effect of Derivative Instruments on the Consolidated Statements of Financial Position and the Consolidated Statements of Income (Loss) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/DerivativeInstrumentsAndHedgingActivitiesEffectOfDerivativeInstrumentsOnConsolidatedStatementsOfFinancialPositionAndConsolidatedStatementsOfIncomeLossDetails</Role>
      <ShortName>DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Effect of Derivative Instruments on the Consolidated Statements of Financial Position and the Consolidated Statements of Income (Loss) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>79</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>2428405 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Fair Value of Derivative Instruments in the Consolidated Statements of Financial Position (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/DerivativeInstrumentsAndHedgingActivitiesFairValueOfDerivativeInstrumentsInConsolidatedStatementsOfFinancialPositionDetails</Role>
      <ShortName>DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Fair Value of Derivative Instruments in the Consolidated Statements of Financial Position (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>80</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>2428406 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Gross amounts of derivative instruments, amounts offset due to master netting agreements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/DerivativeInstrumentsAndHedgingActivitiesGrossAmountsOfDerivativeInstrumentsAmountsOffsetDueToMasterNettingAgreementsDetails</Role>
      <ShortName>DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Gross amounts of derivative instruments, amounts offset due to master netting agreements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>81</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>2431402 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Goodwill Roll Forward (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/GoodwillAndIntangibleAssetsGoodwillRollForwardDetails</Role>
      <ShortName>GOODWILL AND INTANGIBLE ASSETS - Goodwill Roll Forward (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>82</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>2431403 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/GoodwillAndIntangibleAssetsNarrativeDetails</Role>
      <ShortName>GOODWILL AND INTANGIBLE ASSETS - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>83</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>2431404 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Intangible Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/GoodwillAndIntangibleAssetsIntangibleAssetsDetails</Role>
      <ShortName>GOODWILL AND INTANGIBLE ASSETS - Intangible Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>84</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>2431405 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Estimated future annual pre-tax amortization expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/GoodwillAndIntangibleAssetsEstimatedFutureAnnualPreTaxAmortizationExpenseDetails</Role>
      <ShortName>GOODWILL AND INTANGIBLE ASSETS - Estimated future annual pre-tax amortization expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>85</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>2434402 - Disclosure - WARRANTY LIABILITY - Changes in the Company's liabilities for standard limited warranties (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/WarrantyLiabilityChangesInCompanysLiabilitiesForStandardLimitedWarrantiesDetails</Role>
      <ShortName>WARRANTY LIABILITY - Changes in the Company's liabilities for standard limited warranties (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>86</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R87.htm</HtmlFileName>
      <LongName>2440401 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/CommitmentsAndContingenciesDetails</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dell.com/role/CommitmentsAndContingencies</ParentRole>
      <Position>87</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R88.htm</HtmlFileName>
      <LongName>2443401 - Disclosure - INCOME AND OTHER TAXES - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/IncomeAndOtherTaxesNarrativeDetails</Role>
      <ShortName>INCOME AND OTHER TAXES - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>88</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R89.htm</HtmlFileName>
      <LongName>2446402 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS - Accumulated other comprehensive income (loss), net of tax (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/AccumulatedOtherComprehensiveLossAccumulatedOtherComprehensiveIncomeLossNetOfTaxDetails</Role>
      <ShortName>ACCUMULATED OTHER COMPREHENSIVE LOSS - Accumulated other comprehensive income (loss), net of tax (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>89</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R90.htm</HtmlFileName>
      <LongName>2446403 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS - Reclassifications out of accumulated other comprehensive loss, net of tax (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/AccumulatedOtherComprehensiveLossReclassificationsOutOfAccumulatedOtherComprehensiveLossNetOfTaxDetails</Role>
      <ShortName>ACCUMULATED OTHER COMPREHENSIVE LOSS - Reclassifications out of accumulated other comprehensive loss, net of tax (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>90</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R91.htm</HtmlFileName>
      <LongName>2447402 - Disclosure - NON-CONTROLLING INTERESTS - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/NonControllingInterestsNarrativeDetails</Role>
      <ShortName>NON-CONTROLLING INTERESTS - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>91</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R92.htm</HtmlFileName>
      <LongName>2447404 - Disclosure - NON-CONTROLLING INTERESTS - Effect of Changes in Company's Ownership Interest on Equity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/NonControllingInterestsEffectOfChangesInCompanysOwnershipInterestOnEquityDetails</Role>
      <ShortName>NON-CONTROLLING INTERESTS - Effect of Changes in Company's Ownership Interest on Equity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>92</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R93.htm</HtmlFileName>
      <LongName>2448402 - Disclosure - EARNINGS (LOSS) PER SHARE - Schedule of Earnings (Loss) Per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/EarningsLossPerShareScheduleOfEarningsLossPerShareDetails</Role>
      <ShortName>EARNINGS (LOSS) PER SHARE - Schedule of Earnings (Loss) Per Share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dell.com/role/EarningsLossPerShareTables</ParentRole>
      <Position>93</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R94.htm</HtmlFileName>
      <LongName>2448403 - Disclosure - EARNINGS (LOSS) PER SHARE - Reconciliation of Net Income (Loss) From Continuing Operations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/EarningsLossPerShareReconciliationOfNetIncomeLossFromContinuingOperationsDetails</Role>
      <ShortName>EARNINGS (LOSS) PER SHARE - Reconciliation of Net Income (Loss) From Continuing Operations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dell.com/role/EarningsLossPerShareTables</ParentRole>
      <Position>94</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R95.htm</HtmlFileName>
      <LongName>2449402 - Disclosure - CAPITALIZATION - Schedule of Stock by Class (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/CapitalizationScheduleOfStockByClassDetails</Role>
      <ShortName>CAPITALIZATION - Schedule of Stock by Class (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>95</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R96.htm</HtmlFileName>
      <LongName>2449403 - Disclosure - CAPITALIZATION (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/CapitalizationDetails</Role>
      <ShortName>CAPITALIZATION (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dell.com/role/CapitalizationTables</ParentRole>
      <Position>96</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R97.htm</HtmlFileName>
      <LongName>2450402 - Disclosure - STOCK-BASED COMPENSATION (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/StockBasedCompensationDetails</Role>
      <ShortName>STOCK-BASED COMPENSATION (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dell.com/role/StockBasedCompensationTables</ParentRole>
      <Position>97</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R98.htm</HtmlFileName>
      <LongName>2450403 - Disclosure - STOCK-BASED COMPENSATION - Dell Award Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/StockBasedCompensationDellAwardActivityDetails</Role>
      <ShortName>STOCK-BASED COMPENSATION - Dell Award Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>98</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R99.htm</HtmlFileName>
      <LongName>2450404 - Disclosure - STOCK-BASED COMPENSATION - Fair Value Assumptions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/StockBasedCompensationFairValueAssumptionsDetails</Role>
      <ShortName>STOCK-BASED COMPENSATION - Fair Value Assumptions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>99</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R100.htm</HtmlFileName>
      <LongName>2450405 - Disclosure - STOCK-BASED COMPENSATION - VMWare Award Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/StockBasedCompensationVmwareAwardActivityDetails</Role>
      <ShortName>STOCK-BASED COMPENSATION - VMWare Award Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>100</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R101.htm</HtmlFileName>
      <LongName>2450406 - Disclosure - STOCK-BASED COMPENSATION - VMware Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/StockBasedCompensationVmwareNarrativeDetails</Role>
      <ShortName>STOCK-BASED COMPENSATION - VMware Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>101</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R102.htm</HtmlFileName>
      <LongName>2450407 - Disclosure - STOCK-BASED COMPENSATION - Stock-based Compensation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/StockBasedCompensationStockBasedCompensationDetails</Role>
      <ShortName>STOCK-BASED COMPENSATION - Stock-based Compensation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>102</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R103.htm</HtmlFileName>
      <LongName>2451401 - Disclosure - REDEEMABLE SHARES - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/RedeemableSharesNarrativeDetails</Role>
      <ShortName>REDEEMABLE SHARES - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>103</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R104.htm</HtmlFileName>
      <LongName>2452402 - Disclosure - SEGMENT INFORMATION - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/SegmentInformationNarrativeDetails</Role>
      <ShortName>SEGMENT INFORMATION - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>104</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R105.htm</HtmlFileName>
      <LongName>2452403 - Disclosure - SEGMENT INFORMATION - Reconciliation of net revenue by reportable segments to consolidated net revenue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/SegmentInformationReconciliationOfNetRevenueByReportableSegmentsToConsolidatedNetRevenueDetails</Role>
      <ShortName>SEGMENT INFORMATION - Reconciliation of net revenue by reportable segments to consolidated net revenue (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>105</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R106.htm</HtmlFileName>
      <LongName>2452404 - Disclosure - SEGMENT INFORMATION - Net revenue by product and services (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/SegmentInformationNetRevenueByProductAndServicesDetails</Role>
      <ShortName>SEGMENT INFORMATION - Net revenue by product and services (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>106</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R107.htm</HtmlFileName>
      <LongName>2453402 - Disclosure - SUPPLEMENTAL CONSOLIDATED FINANCIAL INFORMATION - Inventories and Other Non-Current Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/SupplementalConsolidatedFinancialInformationInventoriesAndOtherNonCurrentLiabilitiesDetails</Role>
      <ShortName>SUPPLEMENTAL CONSOLIDATED FINANCIAL INFORMATION - Inventories and Other Non-Current Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>107</Position>
    </Report>
    <Report instance="dvmt-20161028.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R108.htm</HtmlFileName>
      <LongName>2454401 - Disclosure - SUBSEQUENT EVENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dell.com/role/SubsequentEventsDetails</Role>
      <ShortName>SUBSEQUENT EVENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dell.com/role/SubsequentEvents</ParentRole>
      <Position>108</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>dvmt-20161028.xml</File>
    <File>dvmt-20161028.xsd</File>
    <File>dvmt-20161028_cal.xml</File>
    <File>dvmt-20161028_def.xml</File>
    <File>dvmt-20161028_lab.xml</File>
    <File>dvmt-20161028_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies/>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
