<?xml version='1.0' encoding='UTF-8'?>
<FilingSummary>
  <Version>3.7.0.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>183</ContextCount>
  <ElementCount>349</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>52</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>4</UnitCount>
  <MyReports>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>00000001 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-daei</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>00000002 - Statement - Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-cbs</Role>
      <ShortName>Consolidated Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>00000003 - Statement - Consolidated Balance Sheets (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-cbsp</Role>
      <ShortName>Consolidated Balance Sheets (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>00000004 - Statement - Consolidated Statements of Comprehensive Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-csoci</Role>
      <ShortName>Consolidated Statements of Comprehensive Income</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>00000005 - Statement - Consolidated Statements of Stockholders' Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-csose</Role>
      <ShortName>Consolidated Statements of Stockholders' Equity</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>00000006 - Statement - Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-csocf</Role>
      <ShortName>Consolidated Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>00000007 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-nooasosap</Role>
      <ShortName>Nature of Operations and Summary of Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>00000008 - Disclosure - Recent Acquisitions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/Disclosure-Acquisitions</Role>
      <ShortName>Recent Acquisitions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>00000009 - Disclosure - Assets and Liabilities Held for Sale</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/Disclosure-AssetsandLiabilitiesHeldforSale</Role>
      <ShortName>Assets and Liabilities Held for Sale</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>00000010 - Disclosure - Investments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-i1</Role>
      <ShortName>Investments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>00000011 - Disclosure - Fair Values of Financial Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-fvofi1</Role>
      <ShortName>Fair Values of Financial Instruments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>00000012 - Disclosure - Income Tax Matters</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-itm1</Role>
      <ShortName>Income Tax Matters</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>00000013 - Disclosure - Reinsurance</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-r1</Role>
      <ShortName>Reinsurance</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>00000014 - Disclosure - Deposit-Type Contracts</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-dc1</Role>
      <ShortName>Deposit-Type Contracts</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>00000015 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-cac1</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>00000016 - Disclosure - Statutory Net Income and Surplus</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-snias1</Role>
      <ShortName>Statutory Net Income and Surplus</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>00000017 - Disclosure - Surplus Notes</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-sn1</Role>
      <ShortName>Surplus Notes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>00000018 - Disclosure - Related Party Transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-rpt1</Role>
      <ShortName>Related Party Transactions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>00000019 - Disclosure - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-se1</Role>
      <ShortName>Subsequent Events</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>00000020 - Disclosure - Schedule I Summary of Investments - Other Than Investments in Related Parties</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/ScheduleISummaryOfInvestments-OtherThanInvestmentsInRelatedParties</Role>
      <ShortName>Schedule I Summary of Investments - Other Than Investments in Related Parties</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>00000021 - Disclosure - Schedule II Condensed Financial Information of Registrant Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/ScheduleIiCondensedFinancialInformationOfRegistrantBalanceSheets</Role>
      <ShortName>Schedule II Condensed Financial Information of Registrant Balance Sheets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>00000022 - Disclosure - Schedule II Condensed Financial Information of Registrant Statements of Comprehensive Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/ScheduleIiCondensedFinancialInformationOfRegistrantStatementsOfComprehensiveIncome</Role>
      <ShortName>Schedule II Condensed Financial Information of Registrant Statements of Comprehensive Income</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>00000023 - Disclosure - Schedule II Condensed Financial Information of Registrant Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/ScheduleIiCondensedFinancialInformationOfRegistrantStatementsOfCashFlows</Role>
      <ShortName>Schedule II Condensed Financial Information of Registrant Statements of Cash Flows</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>00000024 - Disclosure - Schedule III Supplementary Insurance Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-sisii1</Role>
      <ShortName>Schedule III Supplementary Insurance Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>00000025 - Disclosure - Schedule IV Reinsurance Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-siri1</Role>
      <ShortName>Schedule IV Reinsurance Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>00000026 - Disclosure - Valuation and Qualifying Accounts</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/ValuationAndQualifyingAccounts</Role>
      <ShortName>Valuation and Qualifying Accounts</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>00000027 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-nooasosapp</Role>
      <ShortName>Nature of Operations and Summary of Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-nooasosap</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>00000028 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-nooasosapt1</Role>
      <ShortName>Nature of Operations and Summary of Significant Accounting Policies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-nooasosap</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>00000029 - Disclosure - Recent Acquisitions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/Disclosure-AcquisitionsTables</Role>
      <ShortName>Recent Acquisitions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/Disclosure-Acquisitions</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>00000031 - Disclosure - Investments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-it1</Role>
      <ShortName>Investments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-i1</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>00000032 - Disclosure - Fair Values of Financial Instruments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-fvofit1</Role>
      <ShortName>Fair Values of Financial Instruments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-fvofi1</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>00000033 - Disclosure - Income Tax Matters (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-itmt1</Role>
      <ShortName>Income Tax Matters (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-itm1</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>00000034 - Disclosure - Reinsurance (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-rt1</Role>
      <ShortName>Reinsurance (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-r1</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>00000035 - Disclosure - Deposit-Type Contracts (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-dct1</Role>
      <ShortName>Deposit-Type Contracts (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-dc1</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>00000036 - Disclosure - Commitments and Contingencies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-cact</Role>
      <ShortName>Commitments and Contingencies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-cac1</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>00000037 - Disclosure - Statutory Net Income and Surplus (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-sniast1</Role>
      <ShortName>Statutory Net Income and Surplus (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-snias1</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>00000038 - Disclosure - Surplus Notes (Tables)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-snt1</Role>
      <ShortName>Surplus Notes (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-sn1</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>00000039 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies (Schedule of Deferred Acquisition Costs) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-nooasosapsodacd</Role>
      <ShortName>Nature of Operations and Summary of Significant Accounting Policies (Schedule of Deferred Acquisition Costs) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-nooasosapt1</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>00000040 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/NatureOfOperationsAndSummaryOfSignificantAccountingPoliciesNarrativeDetails</Role>
      <ShortName>Nature of Operations and Summary of Significant Accounting Policies (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-nooasosapt1</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>00000041 - Disclosure - Recent Acquisitions (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/Disclosure-AcquisitionsNarrativeDetails</Role>
      <ShortName>Recent Acquisitions (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/Disclosure-AcquisitionsTables</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>00000042 - Disclosure - Recent Acquisitions (Schedule of Assets Acquired and Liabilities Assumed) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/Disclosure-AcquisitionsScheduleofAssetsAcquiredandLiabilitiesAssumedDetails</Role>
      <ShortName>Recent Acquisitions (Schedule of Assets Acquired and Liabilities Assumed) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/Disclosure-AcquisitionsTables</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>00000043 - Disclosure - Recent Acquisitions (Schedule of Pro Forma Information) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/Disclosure-AcquisitionsScheduleofProFormaInformationDetails</Role>
      <ShortName>Recent Acquisitions (Schedule of Pro Forma Information) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/Disclosure-AcquisitionsTables</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>00000044 - Disclosure - Assets and Liabilities Held for Sale (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/Disclosure-AssetsandLiabilitiesHeldforSaleDetails</Role>
      <ShortName>Assets and Liabilities Held for Sale (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/Disclosure-AssetsandLiabilitiesHeldforSale</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>00000045 - Disclosure - Investments (Schedule of Available for Sale Investments) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-isoafsid1</Role>
      <ShortName>Investments (Schedule of Available for Sale Investments) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-it1</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>00000046 - Disclosure - Investments (Schedule of Amortized Cost, Fair Value, Credit Rating) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-isoacfvcrd</Role>
      <ShortName>Investments (Schedule of Amortized Cost, Fair Value, Credit Rating) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-it1</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>00000047 - Disclosure - Investments (Schedule of Unrealized Loss of Securities) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-isoulosd1</Role>
      <ShortName>Investments (Schedule of Unrealized Loss of Securities) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-it1</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>00000048 - Disclosure - Investments (Schedule of Fixed Maturities) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-isofmd1</Role>
      <ShortName>Investments (Schedule of Fixed Maturities) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-it1</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>00000049 - Disclosure - Investments (Components of Net Investment Income) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-iconiid1</Role>
      <ShortName>Investments (Components of Net Investment Income) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-it1</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>00000050 - Disclosure - Investments (Schedule of Mortgage Loan Activity) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-isomlad1</Role>
      <ShortName>Investments (Schedule of Mortgage Loan Activity) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-it1</ParentRole>
      <Position>49</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>00000051 - Disclosure - Investments (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-ind1</Role>
      <ShortName>Investments (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-it1</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>00000052 - Disclosure - Fair Values of Financial Instruments (Schedule of Financial Instruments at Fair Value Measured on a Recurring Basis) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-fvofisofiafvmorbd1</Role>
      <ShortName>Fair Values of Financial Instruments (Schedule of Financial Instruments at Fair Value Measured on a Recurring Basis) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-fvofit1</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>00000053 - Disclosure - Fair Values of Financial Instruments (Schedule of Financial Assets and Liabilities at Fair Value) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-fvofisofaalafvd1</Role>
      <ShortName>Fair Values of Financial Instruments (Schedule of Financial Assets and Liabilities at Fair Value) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-fvofit1</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>00000054 - Disclosure - Fair Values of Financial Instruments (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-fvofind</Role>
      <ShortName>Fair Values of Financial Instruments (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-fvofit1</ParentRole>
      <Position>53</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>00000055 - Disclosure - Income Tax Matters (Schedule of Deferred Tax Assets and Liabilities) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-itmsodtaald1</Role>
      <ShortName>Income Tax Matters (Schedule of Deferred Tax Assets and Liabilities) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-itmt1</ParentRole>
      <Position>54</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>00000056 - Disclosure - Income Tax Matters (Schedule of Effective Tax Rate Reconciliation) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-itmsoetrrd1</Role>
      <ShortName>Income Tax Matters (Schedule of Effective Tax Rate Reconciliation) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-itmt1</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>00000057 - Disclosure - Income Tax Matters (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-itmnd1</Role>
      <ShortName>Income Tax Matters (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-itmt1</ParentRole>
      <Position>56</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>00000058 - Disclosure - Reinsurance (Summary of Significant Reinsurance Amounts) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-rsosrad1</Role>
      <ShortName>Reinsurance (Summary of Significant Reinsurance Amounts) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-rt1</ParentRole>
      <Position>57</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>00000059 - Disclosure - Reinsurance (Schedule of Significant Reinsurance Balances) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-rsosrbd1</Role>
      <ShortName>Reinsurance (Schedule of Significant Reinsurance Balances) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-rt1</ParentRole>
      <Position>58</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>00000060 - Disclosure - Reinsurance (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-rnd1</Role>
      <ShortName>Reinsurance (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-rt1</ParentRole>
      <Position>59</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>00000061 - Disclosure - Deposit-Type Contracts (Schedule of Contracts) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-dcsocd1</Role>
      <ShortName>Deposit-Type Contracts (Schedule of Contracts) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-dct1</ParentRole>
      <Position>60</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>00000062 - Disclosure - Deposit-Type Contracts (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-dcnd1</Role>
      <ShortName>Deposit-Type Contracts (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-dct1</ParentRole>
      <Position>61</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>00000063 - Disclosure - Commitments and Contingencies (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-cacd1</Role>
      <ShortName>Commitments and Contingencies (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-cact</ParentRole>
      <Position>62</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>00000064 - Disclosure - Statutory Net Income and Surplus (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-sniasd1</Role>
      <ShortName>Statutory Net Income and Surplus (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-sniast1</ParentRole>
      <Position>63</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>00000065 - Disclosure - Surplus Notes (Summary of Surplus Notes) (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-snsosnd1</Role>
      <ShortName>Surplus Notes (Summary of Surplus Notes) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-snt1</ParentRole>
      <Position>64</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>00000066 - Disclosure - Surplus Notes (Narrative) (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-snnd1</Role>
      <ShortName>Surplus Notes (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-snt1</ParentRole>
      <Position>65</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>00000067 - Disclosure - Related Party Transactions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/cik0000355379-rptd1</Role>
      <ShortName>Related Party Transactions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-rpt1</ParentRole>
      <Position>66</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>00000068 - Disclosure - Schedule I Summary of Investments - Other Than Investments in Related Parties (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/ScheduleISummaryOfInvestments-OtherThanInvestmentsInRelatedPartiesDetails</Role>
      <ShortName>Schedule I Summary of Investments - Other Than Investments in Related Parties (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/ScheduleISummaryOfInvestments-OtherThanInvestmentsInRelatedParties</ParentRole>
      <Position>67</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>00000069 - Disclosure - Schedule II Condensed Financial Information of Registrant Balance Sheets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/ScheduleIiCondensedFinancialInformationOfRegistrantBalanceSheetsDetails</Role>
      <ShortName>Schedule II Condensed Financial Information of Registrant Balance Sheets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/ScheduleIiCondensedFinancialInformationOfRegistrantBalanceSheets</ParentRole>
      <Position>68</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>00000070 - Disclosure - Schedule II Condensed Financial Information of Registrant Statements of Comprehensive Income (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/ScheduleIiCondensedFinancialInformationOfRegistrantStatementsOfComprehensiveIncomeDetails</Role>
      <ShortName>Schedule II Condensed Financial Information of Registrant Statements of Comprehensive Income (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/ScheduleIiCondensedFinancialInformationOfRegistrantStatementsOfComprehensiveIncome</ParentRole>
      <Position>69</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>00000071 - Disclosure - Schedule II Condensed Financial Information of Registrant Statements of Cash Flows (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/ScheduleIiCondensedFinancialInformationOfRegistrantStatementsOfCashFlowsDetails</Role>
      <ShortName>Schedule II Condensed Financial Information of Registrant Statements of Cash Flows (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/ScheduleIiCondensedFinancialInformationOfRegistrantStatementsOfComprehensiveIncome</ParentRole>
      <Position>70</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>00000072 - Disclosure - Schedule III Supplementary Insurance Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/ScheduleIiiSupplementaryInsuranceInformationDetails</Role>
      <ShortName>Schedule III Supplementary Insurance Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-sisii1</ParentRole>
      <Position>71</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>00000073 - Disclosure - Schedule IV Reinsurance Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/ScheduleIvReinsuranceInformationDetails</Role>
      <ShortName>Schedule IV Reinsurance Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/cik0000355379-siri1</ParentRole>
      <Position>72</Position>
    </Report>
    <Report instance="cik0000355379-20161231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>00000074 - Disclosure - Valuation and Qualifying Accounts (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://midwestholdinginc.com/role/ValuationAndQualifyingAccountsDetails</Role>
      <ShortName>Valuation and Qualifying Accounts (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://midwestholdinginc.com/role/ValuationAndQualifyingAccounts</ParentRole>
      <Position>73</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>cik0000355379-20161231.xml</File>
    <File>cik0000355379-20161231.xsd</File>
    <File>cik0000355379-20161231_cal.xml</File>
    <File>cik0000355379-20161231_def.xml</File>
    <File>cik0000355379-20161231_lab.xml</File>
    <File>cik0000355379-20161231_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies/>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
