| Label | Element | Value | ||
|---|---|---|---|---|
| Lazard Retirement International Small Cap Equity Portfolio | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| Risk/Return [Heading] | rr_RiskReturnHeading | Lazard Retirement International Small Cap Equity Portfolio | ||
| Objective [Heading] | rr_ObjectiveHeading | Investment Objective | ||
| Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | The Portfolio seeks long-term capital appreciation. |
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| Expense [Heading] | rr_ExpenseHeading | Fees and Expenses | ||
| Expense Narrative [Text Block] | rr_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., 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. |
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| Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) | ||
| Portfolio Turnover [Heading] | rr_PortfolioTurnoverHeading | Portfolio Turnover | ||
| Portfolio Turnover [Text Block] | rr_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. Because the Portfolio had not commenced investment operations prior to the date of this Prospectus, no portfolio turnover information is presented. |
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| Expense Example [Heading] | rr_ExpenseExampleHeading | Example | ||
| Expense Example Narrative [Text Block] | rr_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. 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: |
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| Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies | ||
| Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock | The Portfolio invests primarily in equity securities, principally common stocks, of relatively small, non-US companies. Lazard Asset Management LLC (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 considers “small non-US companies” to be those non-US companies with market capitalizations, at the time of initial purchase by the Portfolio, within the range of companies included in the MSCI EAFE Small Cap Index (based on market capitalization of the Index as a whole, which ranged from approximately $125.4 million to $26.0 billion as of March 31, 2025). Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of small cap companies. |
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| Risk [Heading] | rr_RiskHeading | Principal Investment Risks | ||
| Bar Chart and Performance Table [Heading] | rr_BarChartAndPerformanceTableHeading | Performance Bar Chart and Table | ||
| Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | Because the Portfolio had not commenced investment operations prior to the date of this Prospectus, no performance returns are presented. Annual performance returns provide some indication of the risks of investing in the Portfolio by showing changes in performance from year to year. Comparison of Portfolio performance to an appropriate index indicates how the Portfolio’s average annual returns compare with those of a broad measure of market performance. After the Portfolio commences investment operations, performance information will be 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. |
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| Performance Information Illustrates Variability of Returns [Text] | rr_PerformanceInformationIllustratesVariabilityOfReturns | Annual performance returns provide some indication of the risks of investing in the Portfolio by showing changes in performance from year to year. | ||
| Performance One Year or Less [Text] | rr_PerformanceOneYearOrLess | Because the Portfolio had not commenced investment operations prior to the date of this Prospectus, no performance returns are presented. | ||
| Performance Availability Phone [Text] | rr_PerformanceAvailabilityPhone | (800) 823-6300 | ||
| Performance Availability Website Address [Text] | rr_PerformanceAvailabilityWebSiteAddress | www.lazardassetmanagement.com | ||
| Performance Past Does Not Indicate Future [Text] | rr_PerformancePastDoesNotIndicateFuture | The Portfolio’s past performance is not necessarily an indication of how the Portfolio will perform in the future. | ||
| Lazard Retirement International Small Cap Equity Portfolio | Principal Investment Risks | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | Principal Investment Risks The value of your investment in the Portfolio will fluctuate, which means you could lose money. |
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| Lazard Retirement International Small Cap Equity Portfolio | Risk Lose Money [Member] | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | The value of your investment in the Portfolio will fluctuate, which means you could lose money. |
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| Lazard Retirement International Small Cap Equity Portfolio | Market Risk | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_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 US and global investment markets. |
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| Lazard Retirement International Small Cap Equity Portfolio | Issuer Risk | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_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. |
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| Lazard Retirement International Small Cap Equity Portfolio | Small and Mid Cap Companies Risk | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_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. |
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| Lazard Retirement International Small Cap Equity Portfolio | Non-US Securities Risk | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | Non-US Securities Risk: The Portfolio’s performance will be influenced by political, social and economic factors affecting the non-US countries and companies in which the Portfolio invests. Non-US securities carry special risks, such as less developed or less efficient trading markets, political instability, a lack of company information, differing auditing and legal standards, and, potentially, less liquidity. Non-US securities may be subject to economic sanctions or other governmental actions or developments, exchange controls (including repatriation restrictions), confiscations, trade restrictions (including tariffs) or problems related to share registration, trade settlement or asset custody, which could, among other things, effectively restrict or eliminate the Portfolio’s ability to purchase or sell certain foreign securities. To the extent the Portfolio holds securities subject to such actions, the securities may become difficult to value and/or less liquid (or illiquid). In some cases, the securities may become worthless. |
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| Lazard Retirement International Small Cap Equity Portfolio | Foreign Currency Risk | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | Foreign Currency Risk: Investments denominated in currencies other than US dollars may experience a decline in value, in US dollar terms, due solely to fluctuations in currency exchange rates. The Portfolio’s investments denominated in such currencies (particularly currencies of emerging markets countries), as well as any investments in currencies themselves, could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of currencies. Irrespective of any foreign currency exposure hedging, the Portfolio may experience a decline in the value of its portfolio securities, in US dollar terms, due solely to fluctuations in currency exchange rates. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure. |
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| Lazard Retirement International Small Cap Equity Portfolio | Value Investing Risk | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_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. |
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| Lazard Retirement International Small Cap Equity Portfolio | Sector Risk | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | Sector Risk: Implementation of the Portfolio’s investment strategy may, during certain periods, result in the investment of a significant portion of the Portfolio’s assets in a particular market sector, such as companies in the industrials sector, and the Portfolio would be expected to be affected by developments in that sector. Companies in the industrials sector can be significantly affected by, among other things: supply and demand for products and services, product obsolescence, government regulation, changes in commodity prices, claims for environmental damage and product liability and imposition of import controls. |
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| Lazard Retirement International Small Cap Equity Portfolio | Country Risk | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | Country Risk: Implementation of the Portfolio’s investment strategy may, during certain periods, result in the investment of a significant portion of the Portfolio’s assets in a particular country, such as Japan, and the Portfolio would be expected to be affected by political, regulatory, market, economic and social developments affecting that country. Over the last few decades, Japan’s economic growth rate had remained relatively low compared to that of its Asian neighbors and other major developed economies mainly due to deflation. Japan has few natural resources and limited land area and is reliant on imports for its commodity needs. Fluctuations or shortages in relevant commodity markets could have a negative impact on Japan’s economy. In addition, Japan is subject to the risk of natural disasters, such as earthquakes, volcanic eruptions, typhoons and tsunamis, which could negatively affect the Portfolio. The Japanese economy also can be adversely affected by trade tariffs, other protectionist measures, competition from emerging economies, and the economic conditions of its trading partners. Japan has a growing economic relationship with China and other Southeast Asian countries, and economic, political or social instability in those countries could have an adverse effect on Japan’s economy. The Japanese yen has fluctuated widely at times, and any increase in the yen’s value may cause a decline in Japan’s exports. |
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| Lazard Retirement International Small Cap Equity Portfolio | Securities Selection Risk | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_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. |
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| Lazard Retirement International Small Cap Equity Portfolio | Service | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| Management Fees | rr_ManagementFeesOverAssets | 0.75% | ||
| Distribution and Service (12b-1) Fees | rr_DistributionAndService12b1FeesOverAssets | 0.25% | ||
| Other Expenses | rr_OtherExpensesOverAssets | 0.17% | [1] | |
| Total Annual Portfolio Operating Expenses | rr_ExpensesOverAssets | 1.17% | ||
| Other Expenses, New Fund, Based on Estimates [Text] | rr_OtherExpensesNewFundBasedOnEstimates | Based on estimated amounts for the current fiscal year. | ||
| 1 Year | rr_ExpenseExampleYear01 | $ 119 | ||
| 3 Years | rr_ExpenseExampleYear03 | $ 372 | ||
| Lazard Retirement International Small Cap Equity Portfolio | Investor | ||||
| Risk/Return: | rr_RiskReturnAbstract | |||
| Management Fees | rr_ManagementFeesOverAssets | 0.75% | ||
| Distribution and Service (12b-1) Fees | rr_DistributionAndService12b1FeesOverAssets | none | ||
| Other Expenses | rr_OtherExpensesOverAssets | 0.17% | [1] | |
| Total Annual Portfolio Operating Expenses | rr_ExpensesOverAssets | 0.92% | ||
| Other Expenses, New Fund, Based on Estimates [Text] | rr_OtherExpensesNewFundBasedOnEstimates | Based on estimated amounts for the current fiscal year. | ||
| 1 Year | rr_ExpenseExampleYear01 | $ 94 | ||
| 3 Years | rr_ExpenseExampleYear03 | $ 293 | ||
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