<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.24.1.u1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>348</ContextCount>
  <ElementCount>79</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>119</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>3</UnitCount>
  <MyReports>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>01001 - Document - Document and Entity Information {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/DocumentAndEntityInformation1</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>01002 - Document - Risk/Return Summary (Lazard Retirement US Equity Concentrated Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary2</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement US Equity Concentrated Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>01003 - Disclosure - Risk/Return Detail Data (Lazard Retirement US Equity Concentrated Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData3</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement US Equity Concentrated Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>01007 - Document - Risk/Return Summary (Lazard Retirement US Sustainable Equity Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary7</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement US Sustainable Equity Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>01008 - Disclosure - Risk/Return Detail Data (Lazard Retirement US Sustainable Equity Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData8</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement US Sustainable Equity Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>01012 - Document - Risk/Return Summary (Lazard Retirement US Small Cap Equity Select Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary12</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement US Small Cap Equity Select Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>01013 - Disclosure - Risk/Return Detail Data (Lazard Retirement US Small Cap Equity Select Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData13</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement US Small Cap Equity Select Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>01019 - Document - Risk/Return Summary (Lazard Retirement US Systematic Small Cap Equity Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary19</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement US Systematic Small Cap Equity Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>01020 - Disclosure - Risk/Return Detail Data (Lazard Retirement US Systematic Small Cap Equity Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData20</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement US Systematic Small Cap Equity Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>01024 - Document - Risk/Return Summary (Lazard Retirement International Equity Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary24</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement International Equity Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>01025 - Disclosure - Risk/Return Detail Data (Lazard Retirement International Equity Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData25</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement International Equity Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>01031 - Document - Risk/Return Summary (Lazard Retirement International Equity Select Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary31</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement International Equity Select Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>01032 - Disclosure - Risk/Return Detail Data (Lazard Retirement International Equity Select Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData32</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement International Equity Select Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>01036 - Document - Risk/Return Summary (Lazard Retirement International Equity Advantage Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary36</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement International Equity Advantage Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>01037 - Disclosure - Risk/Return Detail Data (Lazard Retirement International Equity Advantage Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData37</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement International Equity Advantage Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>01041 - Document - Risk/Return Summary (Lazard Retirement International Quality Growth Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary41</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement International Quality Growth Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>01042 - Disclosure - Risk/Return Detail Data (Lazard Retirement International Quality Growth Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData42</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement International Quality Growth Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>01046 - Document - Risk/Return Summary (Lazard Retirement International Strategic Equity Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary46</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement International Strategic Equity Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>01047 - Disclosure - Risk/Return Detail Data (Lazard Retirement International Strategic Equity Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData47</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement International Strategic Equity Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>01051 - Document - Risk/Return Summary (Lazard Retirement International Small Cap Equity Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary51</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement International Small Cap Equity Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>01052 - Disclosure - Risk/Return Detail Data (Lazard Retirement International Small Cap Equity Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData52</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement International Small Cap Equity Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>01056 - Document - Risk/Return Summary (Lazard Retirement Managed Equity Volatility Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary56</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement Managed Equity Volatility Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>01057 - Disclosure - Risk/Return Detail Data (Lazard Retirement Managed Equity Volatility Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData57</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement Managed Equity Volatility Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>01061 - Document - Risk/Return Summary (Lazard Retirement Equity Franchise Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary61</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement Equity Franchise Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>01062 - Disclosure - Risk/Return Detail Data (Lazard Retirement Equity Franchise Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData62</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement Equity Franchise Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>01066 - Document - Risk/Return Summary (Lazard Retirement Emerging Markets Equity Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary66</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement Emerging Markets Equity Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>01067 - Disclosure - Risk/Return Detail Data (Lazard Retirement Emerging Markets Equity Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData67</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement Emerging Markets Equity Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>01073 - Document - Risk/Return Summary (Lazard Retirement Emerging Markets Equity Advantage Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary73</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement Emerging Markets Equity Advantage Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>01074 - Disclosure - Risk/Return Detail Data (Lazard Retirement Emerging Markets Equity Advantage Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData74</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement Emerging Markets Equity Advantage Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>01078 - Document - Risk/Return Summary (Lazard Retirement Developing Markets Equity Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary78</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement Developing Markets Equity Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>01079 - Disclosure - Risk/Return Detail Data (Lazard Retirement Developing Markets Equity Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData79</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement Developing Markets Equity Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>01083 - Document - Risk/Return Summary (Lazard Retirement US Convertibles Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary83</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement US Convertibles Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>01084 - Disclosure - Risk/Return Detail Data (Lazard Retirement US Convertibles Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData84</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement US Convertibles Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>33</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R88.htm</HtmlFileName>
      <LongName>01088 - Document - Risk/Return Summary (Lazard Retirement Global Listed Infrastructure Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary88</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement Global Listed Infrastructure Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>34</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R89.htm</HtmlFileName>
      <LongName>01089 - Disclosure - Risk/Return Detail Data (Lazard Retirement Global Listed Infrastructure Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData89</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement Global Listed Infrastructure Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>35</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R93.htm</HtmlFileName>
      <LongName>01093 - Document - Risk/Return Summary (Lazard Retirement Real Assets Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary93</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement Real Assets Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R94.htm</HtmlFileName>
      <LongName>01094 - Disclosure - Risk/Return Detail Data (Lazard Retirement Real Assets Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData94</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement Real Assets Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R98.htm</HtmlFileName>
      <LongName>01098 - Document - Risk/Return Summary (Lazard Retirement Enhanced Opportunities Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary98</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement Enhanced Opportunities Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>38</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R99.htm</HtmlFileName>
      <LongName>01099 - Disclosure - Risk/Return Detail Data (Lazard Retirement Enhanced Opportunities Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData99</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement Enhanced Opportunities Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R103.htm</HtmlFileName>
      <LongName>01103 - Document - Risk/Return Summary (Lazard Retirement Opportunistic Strategies Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary103</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement Opportunistic Strategies Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R104.htm</HtmlFileName>
      <LongName>01104 - Disclosure - Risk/Return Detail Data (Lazard Retirement Opportunistic Strategies Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData104</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement Opportunistic Strategies Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R108.htm</HtmlFileName>
      <LongName>01108 - Document - Risk/Return Summary (Lazard Retirement Global Dynamic Multi-Asset Portfolio) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRSummary108</Role>
      <ShortName>Risk/Return Summary (Lazard Retirement Global Dynamic Multi-Asset Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="c108154_485bpos-ixbrl.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R109.htm</HtmlFileName>
      <LongName>01109 - Disclosure - Risk/Return Detail Data (Lazard Retirement Global Dynamic Multi-Asset Portfolio) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lazard.com/20231231/role/RRDetailData109</Role>
      <ShortName>Risk/Return Detail Data (Lazard Retirement Global Dynamic Multi-Asset Portfolio)</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="485BPOS" isN1a="true" isRR="true" isRRorOEF="true" original="c108154_485bpos-ixbrl.htm">c108154_485bpos-ixbrl.htm</File>
    <File>c485bpos-20240412.xsd</File>
    <File>c485bpos-20240412_cal.xml</File>
    <File>c485bpos-20240412_def.xml</File>
    <File>c485bpos-20240412_lab.xml</File>
    <File>c485bpos-20240412_pre.xml</File>
  </InputFiles>
  <SupplementalFiles>
    <File>img_32f21c980dff4f2.jpg</File>
    <File>img_3dce928537854f2.jpg</File>
    <File>img_59563a85bb054f2.jpg</File>
    <File>img_6da0b135c9544f2.jpg</File>
    <File>img_965ab36380884f2.jpg</File>
    <File>img_970cc44005214f2.jpg</File>
    <File>BarChart1.png</File>
    <File>BarChart2.png</File>
    <File>BarChart3.png</File>
    <File>BarChart4.png</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="8">http://xbrl.sec.gov/dei/2023</BaseTaxonomy>
    <BaseTaxonomy items="1296">http://xbrl.sec.gov/rr/2023</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
