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Label Element Value
Lazard Retirement US Small Cap Equity Select Portfolio  
Risk/Return: oef_RiskReturnAbstract  
Risk/Return [Heading] oef_RiskReturnHeading Lazard Retirement US Small Cap Equity Select Portfolio
Objective [Heading] oef_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] oef_ObjectivePrimaryTextBlock

The Portfolio seeks long-term capital appreciation.
Expense Heading [Optional Text] oef_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] oef_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Portfolio, a series of Lazard Retirement Series, Inc. (the “Fund”), but does not reflect the fees or charges imposed by the separate accounts of certain insurance companies (the “Participating Insurance Companies”) under variable annuity contracts or variable life insurance policies (the “Policies” and each, a “Policy”). If such fees and charges were reflected, the figures in the table would be higher.
Operating Expenses Caption [Optional Text] oef_OperatingExpensesCaption Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination oef_FeeWaiverOrReimbursementOverAssetsDateOfTermination May 1, 2027
Portfolio Turnover [Heading] oef_PortfolioTurnoverHeading Portfolio Turnover
Portfolio Turnover [Text Block] oef_PortfolioTurnoverTextBlock

The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in

annual portfolio operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 89% of the average value of its portfolio.
Portfolio Turnover, Rate oef_PortfolioTurnoverRate 89.00%
Expense Example [Heading] oef_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] oef_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Portfolio for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same, giving effect to the expense limitation agreement in year one only. The Example does not reflect fees and expenses imposed by the Participating Insurance Companies under the Policies; if they were reflected, the figures in the Example would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] oef_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] oef_StrategyNarrativeTextBlock

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of small cap U.S. companies. The Investment Manager considers “small cap companies” to be those companies that, at the time of initial purchase by the Portfolio, have market capitalizations within the range of companies included in the Russell 2000® Index (ranging from approximately $4.4 million to $38.0 billion as of March 31, 2026). Equity security investments primarily include common stocks. The Portfolio considers a company or issuer to be a “U.S. company” if: (i) the company/issuer is organized under the laws of or is domiciled in the U.S. or maintains its principal place of business in the U.S.; (ii) the security, or security of such company/issuer, is traded principally in the U.S.; or (iii) during the most recent fiscal year of the company/issuer, the company/issuer derived at least 50% of its revenues or profits from goods produced or sold, investments made, or services performed in the U.S. or that has at least 50% of its assets in the U.S.

The Investment Manager, through its bottom-up, fundamental research process, invests in companies it believes have strong and/or improving financial productivity and are undervalued based on their earnings, cash flow or asset values.

The Investment Manager focuses on relative value in seeking to construct a diversified portfolio of investments for the Portfolio that maintains sector and industry balance, using investment opportunities identified through bottom-up fundamental research conducted by the Investment Manager’s small cap and global research analysts.

The Portfolio may invest up to 20% of its assets in the securities of larger or smaller U.S. or non-U.S. companies.
Bar Chart and Performance Table [Heading] oef_BarChartAndPerformanceTableHeading Performance Bar Chart and Table
Performance Narrative [Text Block] oef_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Retirement US Small Cap Equity Select Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance and an index that is generally more representative of the types of market sectors and/or types of investments in which the Portfolio invests. The bar chart shows how the performance of the Portfolio’s Service Shares has varied from year to year over the past 10 calendar years. Effective September 1, 2023, certain changes were made to the Portfolio’s principal investments strategies, including removing mid-capitalization companies from its policy with respect to the investment of 80% of its assets. The Portfolio’s performance information prior to September 1, 2023 relates only to the Portfolio’s prior principal investment strategies. Performance information does not reflect the fees or charges imposed by the Participating Insurance Companies under the Policies, and such fees will have the effect of reducing performance. Updated performance information is available at www.lazardassetmanagement.com or by calling (800) 823-6300. The Portfolio’s past performance is not necessarily an indication of how the Portfolio will perform in the future.

Performance Availability Phone [Text] oef_PerformanceAvailabilityPhone (800) 823-6300
Performance Availability Website Address [Text] oef_PerformanceAvailabilityWebSiteAddress www.lazardassetmanagement.com
Performance Past Does Not Indicate Future [Text] oef_PerformancePastDoesNotIndicateFuture The accompanying bar chart and table provide some indication of the risks of investing in Lazard Retirement US Small Cap Equity Select Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance and an index that is generally more representative of the types of market sectors and/or types of investments in which the Portfolio invests. The bar chart shows how the performance of the Portfolio’s Service Shares has varied from year to year over the past 10 calendar years. Effective September 1, 2023, certain changes were made to the Portfolio’s principal investments strategies, including removing mid-capitalization companies from its policy with respect to the investment of 80% of its assets. The Portfolio’s performance information prior to September 1, 2023 relates only to the Portfolio’s prior principal investment strategies. Performance information does not reflect the fees or charges imposed by the Participating Insurance Companies under the Policies, and such fees will have the effect of reducing performance. Updated performance information is available at www.lazardassetmanagement.com or by calling (800) 823-6300. The Portfolio’s past performance is not necessarily an indication of how the Portfolio will perform in the future.
Bar Chart [Heading] oef_BarChartHeading Year-by-Year Total Returns for Service Shares As of December 31, 2025
Bar Chart Does Not Reflect Sales Loads [Text] oef_BarChartDoesNotReflectSalesLoads performance information prior to September 1, 2023 relates only to the Portfolio’s prior principal investment strategies. Performance information does not reflect the fees or charges imposed by the Participating Insurance Companies under the Policies, and such fees will have the effect of reducing performance.
Bar Chart Closing [Text Block] oef_BarChartClosingTextBlock
  

Best Quarter:

 

2020, Q4

23.82%

 

 

Worst Quarter:

2020, Q1

-30.98%
Performance Table Heading oef_PerformanceTableHeading Average Annual Total Returns (for the periods ended December 31, 2025)
Index No Deduction for Fees, Expenses, or Taxes [Text] oef_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses or taxes)
Lazard Retirement US Small Cap Equity Select Portfolio | Principal Investment Risks  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.
Lazard Retirement US Small Cap Equity Select Portfolio | Risk Lose Money [Member]  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

The value of your investment in the Portfolio will fluctuate, which means you could lose money.
Lazard Retirement US Small Cap Equity Select Portfolio | Market Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Market Risk: The Portfolio may incur losses due to declines in one or more markets in which it invests. These declines may be the result of, among other things, political, regulatory, market, economic or social developments affecting the relevant market(s). To the extent that such developments impact specific industries, market sectors, countries or geographic regions, the Portfolio’s investments in such industries, market sectors, countries and/or geographic regions can be expected to be particularly affected, especially if such investments are a significant portion of its investment portfolio. In addition, turbulence in financial markets and reduced liquidity in equity, credit and/or fixed income markets may negatively affect many issuers, which could adversely affect the Portfolio. Global economies and financial markets are increasingly interconnected, and conditions and events in one country, region or financial market may adversely impact issuers worldwide. As a result, local, regional or global events such as war or military conflict, acts of terrorism, the spread of infectious illness or other public health issues, social unrest, natural disasters, extreme weather, other geological events, man-made disasters, supply chain disruptions, deflation, inflation, government defaults, government shutdowns, the imposition of sanctions or other similar measures, recessions or other events could have a significant negative impact on global economic and market conditions. For example, a public health or other emergency and aggressive responses taken by many governments or voluntarily imposed by private parties, including closing borders, restricting travel and imposing prolonged quarantines or similar restrictions, as well as the closure of, or operational changes to, many retail and other businesses, may have severe negative impacts on markets worldwide. Additionally, general market conditions may affect the value of a Portfolio’s securities, including changes in interest rates, currency rates or monetary policies. Furthermore, the imposition of tariffs, trade restrictions, currency restrictions or similar actions (or retaliatory measures taken in response to such actions), or the threat or potential of one or more such events and developments, could lead to price volatility and overall declines in the U.S. and global investment markets.
Lazard Retirement US Small Cap Equity Select Portfolio | Issuer Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Issuer Risk: The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets or factors unrelated to the issuer’s value, such as investor perception.
Lazard Retirement US Small Cap Equity Select Portfolio | Small and Mid Cap Companies Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Small and Mid Cap Companies Risk: Small and mid cap companies carry additional risks because their earnings tend to be less predictable, their share prices more volatile and their securities less liquid than larger, more established

companies. The shares of small and mid cap companies tend to trade less frequently than those of larger companies, which can have an adverse effect on the pricing of these securities and on the ability to sell these securities when the Investment Manager deems it appropriate.
Lazard Retirement US Small Cap Equity Select Portfolio | Value Investing Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Value Investing Risk: Value investments are believed by the Investment Manager to be undervalued, but may not realize their perceived value for extended periods of time or may never realize their perceived value. These securities may respond differently to market and other developments than other types of securities.
Lazard Retirement US Small Cap Equity Select Portfolio | Securities Selection Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Securities Selection Risk: Securities and other investments selected by the Investment Manager for the Portfolio may not perform to expectations. This could result in the Portfolio’s underperformance compared to other funds with similar investment objectives or strategies.
Lazard Retirement US Small Cap Equity Select Portfolio | Russell 3000 Index  
Risk/Return: oef_RiskReturnAbstract  
Average Annual Return, Label [Optional Text] oef_AverageAnnualReturnLabel Russell 3000 Index
Average Annual Return, Percent oef_AvgAnnlRtrPct 17.15%
Average Annual Return, Percent oef_AvgAnnlRtrPct 13.15%
Average Annual Return, Percent oef_AvgAnnlRtrPct 14.29%
Lazard Retirement US Small Cap Equity Select Portfolio | Russell 2000 Index  
Risk/Return: oef_RiskReturnAbstract  
Average Annual Return, Label [Optional Text] oef_AverageAnnualReturnLabel Russell 2000 Index
Average Annual Return, Percent oef_AvgAnnlRtrPct 12.81%
Average Annual Return, Percent oef_AvgAnnlRtrPct 6.09%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.62%
Lazard Retirement US Small Cap Equity Select Portfolio | Service  
Risk/Return: oef_RiskReturnAbstract  
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.75%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.41%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 1.41%
Fee Waiver or Reimbursement oef_FeeWaiverOrReimbursementOverAssets 0.31% [1]
Net Expenses (as a percentage of Assets) oef_NetExpensesOverAssets 1.10%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 112
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 416
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 742
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,664
Highest Quarterly Return, Label [Optional Text] oef_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date oef_BarChartHighestQuarterlyReturnDate Dec. 31, 2020
Highest Quarterly Return oef_BarChartHighestQuarterlyReturn 23.82%
Lowest Quarterly Return, Label [Optional Text] oef_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date oef_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return oef_BarChartLowestQuarterlyReturn (30.98%)
Average Annual Return, Percent oef_AvgAnnlRtrPct 2.18%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.82%
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.22%
Annual Return [Percent] oef_AnnlRtrPct 15.78%
Annual Return [Percent] oef_AnnlRtrPct 13.95%
Annual Return [Percent] oef_AnnlRtrPct (13.24%)
Annual Return [Percent] oef_AnnlRtrPct 29.93%
Annual Return [Percent] oef_AnnlRtrPct 6.76%
Annual Return [Percent] oef_AnnlRtrPct 19.87%
Annual Return [Percent] oef_AnnlRtrPct (15.52%)
Annual Return [Percent] oef_AnnlRtrPct 10.02%
Annual Return [Percent] oef_AnnlRtrPct 11.12%
Annual Return [Percent] oef_AnnlRtrPct 2.18%
Performance Inception Date oef_PerfInceptionDate Nov. 04, 1997
Lazard Retirement US Small Cap Equity Select Portfolio | Investor  
Risk/Return: oef_RiskReturnAbstract  
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.75%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.00%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.41% [2]
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 1.16%
Fee Waiver or Reimbursement oef_FeeWaiverOrReimbursementOverAssets 0.21% [1]
Net Expenses (as a percentage of Assets) oef_NetExpensesOverAssets 0.95%
Other Expenses, New Fund, Based on Estimates [Text] oef_OtherExpensesNewFundBasedOnEstimates Based on estimated amounts for the current fiscal year, using amounts for Service Shares from the last fiscal year.
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 97
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 348
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 618
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,390
[1] Reflects a contractual agreement by Lazard Asset Management LLC (the “Investment Manager”) to waive its fee and, if necessary, reimburse the Portfolio until May 1, 2027, to the extent Total Annual Portfolio Operating Expenses exceed 1.10% and .95% of the average daily net assets of the Portfolio’s Service Shares and Investor Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of “Acquired Funds,” fees and expenses related to filing foreign tax reclaims and extraordinary expenses. This expense limitation agreement can only be amended by agreement of the Fund, upon approval by the Fund’s Board of Directors, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.
[2] Based on estimated amounts for the current fiscal year, using amounts for Service Shares from the last fiscal year.