| Label | Element | Value | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lazard US Equity Concentrated Portfolio | |||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||
| Risk/Return [Heading] | rr_RiskReturnHeading | Lazard US Equity Concentrated 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 The Lazard Funds, Inc. (the “Fund”). You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and the Example below. |
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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) | |||||||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination | May 1, 2024 | |||||||||||||
| 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 and may result in higher taxes when Portfolio shares are held in a taxable account. 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 69% of the average value of its portfolio. |
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| Portfolio Turnover, Rate | rr_PortfolioTurnoverRate | 69.00% | |||||||||||||
| 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, giving effect to the expense limitation agreement in year one only. 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 US companies of any market capitalization. The Portfolio has a concentrated portfolio of investments, typically investing in 15 to 35 companies with market capitalizations generally greater than $350 million. The Portfolio seeks to outperform broad-based securities market indices, such as the S&P 500® Index, the Russell 1000® Index and the Russell 3000® Index. The Investment Manager’s philosophy employed for the Portfolio is based on value creation through its process of bottom-up stock selection, and the Investment Manager implements a disciplined portfolio construction process. The Investment Manager’s fundamental research seeks to identify investments typically featuring robust organic cash flow, balance sheet strength and operational flexibility. Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of US companies. The Portfolio may invest up to 20% of its assets in securities of non-US companies. The Portfolio is classified as “non-diversified” under the Investment Company Act of 1940, as amended, which means that it may invest a relatively high percentage of its assets in a limited number of issuers, when compared to a diversified fund. In addition, 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. |
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| Risk [Heading] | rr_RiskHeading | Principal Investment Risks | |||||||||||||
| Risk Narrative [Text Block] | rr_RiskNarrativeTextBlock | The value of your investment in the Portfolio will fluctuate, which means you could lose money. 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, acts of terrorism, the spread of infectious illness or other public health issues, recessions or other events could have a significant negative impact on global economic and market conditions. The coronavirus disease 2019 (COVID-19) global pandemic and the 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, has had negative impacts, and in many cases severe negative impacts, on markets worldwide. It is not known how long the effects of such impacts, or any future impacts of other significant events described above, will or would last, but there could be a prolonged period of global economic slowdown, which may be expected to impact the Portfolio and its investments. 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. 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. 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. Large Cap Companies Risk. Investments in large cap companies may underperform other segments of the market when such other segments are in favor or because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain high growth rates during periods of economic expansion. 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 similar governmental actions or developments, 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. In addition, 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. Emerging market countries can generally have economic structures that are less diverse and mature, and political systems that are less stable, than those of developed countries. Non-Diversification Risk. The Portfolio’s net asset value may be more vulnerable to changes in the market value of a single issuer or group of issuers and may be relatively more susceptible to adverse effects from any single corporate, industry, economic, market, political or regulatory occurrence than if the Portfolio’s investments consisted of securities issued by a larger number of issuers. 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 information technology companies, and the Portfolio would be expected to be affected by developments in that sector. Information technology companies generally operate in intensely competitive markets on a worldwide basis. Also, because technological development in many areas increases at a rapid rate, these companies often produce products with very short life cycles and face the risk of product obsolescence. 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. Concentration Risk. The Portfolio’s ability to concentrate its investments may be limited by applicable requirements of the Internal Revenue Code of 1986, as amended, for qualification as a regulated investment company. |
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| Risk Lose Money [Text] | rr_RiskLoseMoney | The value of your investment in the Portfolio will fluctuate, which means you could lose money. | |||||||||||||
| Bar Chart and Performance Table [Heading] | rr_BarChartAndPerformanceTableHeading | Performance Bar Chart and Table | |||||||||||||
| Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Equity Concentrated Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of broad measures of market performance. The bar chart shows how the performance of the Portfolio’s Institutional Shares has varied from year to year over the past 10 calendar years. Updated performance information is available at www.lazardassetmanagement.com or by calling (800) 823-6300. The Portfolio’s past performance (before and after taxes) 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 | The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Equity Concentrated Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of broad measures of market performance. | |||||||||||||
| 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 (before and after taxes) is not necessarily an indication of how the Portfolio will perform in the future. | |||||||||||||
| Bar Chart [Heading] | rr_BarChartHeading | Year-by-Year Total Returns for Institutional Shares As of 12/31 | |||||||||||||
| Bar Chart Closing [Text Block] | rr_BarChartClosingTextBlock |
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| Performance Table Heading | rr_PerformanceTableHeading | Average Annual Total Returns (for the periods ended December 31, 2022) | |||||||||||||
| Performance Table Uses Highest Federal Rate | rr_PerformanceTableUsesHighestFederalRate | After-tax returns are calculated using the historical highest individual marginal income tax rates and do not reflect the impact of state and local taxes. | |||||||||||||
| Performance Table Not Relevant to Tax Deferred | rr_PerformanceTableNotRelevantToTaxDeferred | The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. | |||||||||||||
| Performance Table One Class of after Tax Shown [Text] | rr_PerformanceTableOneClassOfAfterTaxShown | After-tax returns are shown only for Institutional Shares. After-tax returns of the Portfolio’s other share classes will vary. | |||||||||||||
| Performance Table Narrative | rr_PerformanceTableNarrativeTextBlock | After-tax returns are shown only for Institutional Shares. After-tax returns of the Portfolio’s other share classes will vary. After-tax returns are calculated using the historical highest individual marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. The Russell 1000 Value/S&P 500 Linked Index shown in the table is an unmanaged index created by the Investment Manager, which links the performance of the Russell 1000 Value Index for all periods through May 30, 2012 (when the Portfolio’s investment strategy changed) and the S&P 500 Index for all periods thereafter. |
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| Lazard US Equity Concentrated Portfolio | S&P 500 Index | |||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||
| Index No Deduction for Fees, Expenses, Taxes [Text] | rr_IndexNoDeductionForFeesExpensesTaxes | (reflects no deduction for fees, expenses or taxes) | |||||||||||||
| Label | rr_AverageAnnualReturnLabel | S&P 500 Index | |||||||||||||
| 1 Year | rr_AverageAnnualReturnYear01 | (18.11%) | |||||||||||||
| 5 Years | rr_AverageAnnualReturnYear05 | 9.42% | |||||||||||||
| 10 Years | rr_AverageAnnualReturnYear10 | 12.56% | |||||||||||||
| Lazard US Equity Concentrated Portfolio | Russell 1000 Value/S&P 500 Linked Index | |||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||
| Index No Deduction for Fees, Expenses, Taxes [Text] | rr_IndexNoDeductionForFeesExpensesTaxes | (reflects no deduction for fees, expenses or taxes) | |||||||||||||
| Label | rr_AverageAnnualReturnLabel | Russell 1000 Value/S&P 500 Linked Index | |||||||||||||
| 1 Year | rr_AverageAnnualReturnYear01 | (18.11%) | |||||||||||||
| 5 Years | rr_AverageAnnualReturnYear05 | 9.43% | |||||||||||||
| 10 Years | rr_AverageAnnualReturnYear10 | 12.56% | |||||||||||||
| Lazard US Equity Concentrated Portfolio | Institutional | |||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||
| Management Fees | rr_ManagementFeesOverAssets | 0.70% | |||||||||||||
| Distribution and Service (12b-1) Fees | rr_DistributionAndService12b1FeesOverAssets | none | |||||||||||||
| Other Expenses | rr_OtherExpensesOverAssets | 0.08% | |||||||||||||
| Total Annual Portfolio Operating Expenses | rr_ExpensesOverAssets | 0.78% | |||||||||||||
| Fee Waiver and/or Expense Reimbursement | rr_FeeWaiverOrReimbursementOverAssets | none | [1] | ||||||||||||
| Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement | rr_NetExpensesOverAssets | 0.78% | |||||||||||||
| 1 Year | rr_ExpenseExampleYear01 | $ 80 | |||||||||||||
| 3 Years | rr_ExpenseExampleYear03 | 249 | |||||||||||||
| 5 Years | rr_ExpenseExampleYear05 | 433 | |||||||||||||
| 10 Years | rr_ExpenseExampleYear10 | $ 966 | |||||||||||||
| Annual Return 2013 | rr_AnnualReturn2013 | 29.59% | |||||||||||||
| Annual Return 2014 | rr_AnnualReturn2014 | 18.88% | |||||||||||||
| Annual Return 2015 | rr_AnnualReturn2015 | 7.00% | |||||||||||||
| Annual Return 2016 | rr_AnnualReturn2016 | 7.37% | |||||||||||||
| Annual Return 2017 | rr_AnnualReturn2017 | 15.49% | |||||||||||||
| Annual Return 2018 | rr_AnnualReturn2018 | (6.07%) | |||||||||||||
| Annual Return 2019 | rr_AnnualReturn2019 | 31.72% | |||||||||||||
| Annual Return 2020 | rr_AnnualReturn2020 | 8.98% | |||||||||||||
| Annual Return 2021 | rr_AnnualReturn2021 | 26.02% | |||||||||||||
| Annual Return 2022 | rr_AnnualReturn2022 | (19.89%) | |||||||||||||
| Label | rr_HighestQuarterlyReturnLabel | Best Quarter | |||||||||||||
| Highest Quarterly Return, Date | rr_BarChartHighestQuarterlyReturnDate | Jun. 30, 2020 | |||||||||||||
| Highest Quarterly Return | rr_BarChartHighestQuarterlyReturn | 16.33% | |||||||||||||
| Label | rr_LowestQuarterlyReturnLabel | Worst Quarter | |||||||||||||
| Lowest Quarterly Return, Date | rr_BarChartLowestQuarterlyReturnDate | Mar. 31, 2020 | |||||||||||||
| Lowest Quarterly Return | rr_BarChartLowestQuarterlyReturn | (20.37%) | |||||||||||||
| 1 Year | rr_AverageAnnualReturnYear01 | (19.89%) | |||||||||||||
| 5 Years | rr_AverageAnnualReturnYear05 | 6.36% | |||||||||||||
| 10 Years | rr_AverageAnnualReturnYear10 | 10.78% | |||||||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | 7.80% | |||||||||||||
| Inception Date | rr_AverageAnnualReturnInceptionDate | Sep. 30, 2005 | |||||||||||||
| Lazard US Equity Concentrated Portfolio | Institutional | After Taxes on Distributions | |||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||
| 1 Year | rr_AverageAnnualReturnYear01 | (21.01%) | |||||||||||||
| 5 Years | rr_AverageAnnualReturnYear05 | 4.69% | |||||||||||||
| 10 Years | rr_AverageAnnualReturnYear10 | 8.72% | |||||||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | 6.34% | |||||||||||||
| Lazard US Equity Concentrated Portfolio | Institutional | After Taxes on Distributions and Sales | |||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||
| 1 Year | rr_AverageAnnualReturnYear01 | (10.95%) | |||||||||||||
| 5 Years | rr_AverageAnnualReturnYear05 | 4.95% | |||||||||||||
| 10 Years | rr_AverageAnnualReturnYear10 | 8.32% | |||||||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | 6.07% | |||||||||||||
| Lazard US Equity Concentrated Portfolio | Institutional | S&P 500 Index | |||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | 9.00% | |||||||||||||
| Lazard US Equity Concentrated Portfolio | Institutional | Russell 1000 Value/S&P 500 Linked Index | |||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | 8.41% | |||||||||||||
| Lazard US Equity Concentrated Portfolio | Open | |||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||
| Management Fees | rr_ManagementFeesOverAssets | 0.70% | |||||||||||||
| Distribution and Service (12b-1) Fees | rr_DistributionAndService12b1FeesOverAssets | 0.25% | |||||||||||||
| Other Expenses | rr_OtherExpensesOverAssets | 0.09% | |||||||||||||
| Total Annual Portfolio Operating Expenses | rr_ExpensesOverAssets | 1.04% | |||||||||||||
| Fee Waiver and/or Expense Reimbursement | rr_FeeWaiverOrReimbursementOverAssets | none | [1] | ||||||||||||
| Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement | rr_NetExpensesOverAssets | 1.04% | |||||||||||||
| 1 Year | rr_ExpenseExampleYear01 | $ 106 | |||||||||||||
| 3 Years | rr_ExpenseExampleYear03 | 331 | |||||||||||||
| 5 Years | rr_ExpenseExampleYear05 | 574 | |||||||||||||
| 10 Years | rr_ExpenseExampleYear10 | $ 1,271 | |||||||||||||
| 1 Year | rr_AverageAnnualReturnYear01 | (20.07%) | |||||||||||||
| 5 Years | rr_AverageAnnualReturnYear05 | 6.08% | |||||||||||||
| 10 Years | rr_AverageAnnualReturnYear10 | 10.45% | |||||||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | 7.49% | |||||||||||||
| Inception Date | rr_AverageAnnualReturnInceptionDate | Sep. 30, 2005 | |||||||||||||
| Lazard US Equity Concentrated Portfolio | Open | S&P 500 Index | |||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | 9.00% | |||||||||||||
| Lazard US Equity Concentrated Portfolio | Open | Russell 1000 Value/S&P 500 Linked Index | |||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | 8.41% | |||||||||||||
| Lazard US Equity Concentrated Portfolio | R6 | |||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||
| Management Fees | rr_ManagementFeesOverAssets | 0.70% | |||||||||||||
| Distribution and Service (12b-1) Fees | rr_DistributionAndService12b1FeesOverAssets | none | |||||||||||||
| Other Expenses | rr_OtherExpensesOverAssets | 0.24% | |||||||||||||
| Total Annual Portfolio Operating Expenses | rr_ExpensesOverAssets | 0.94% | |||||||||||||
| Fee Waiver and/or Expense Reimbursement | rr_FeeWaiverOrReimbursementOverAssets | 0.16% | [1] | ||||||||||||
| Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement | rr_NetExpensesOverAssets | 0.78% | |||||||||||||
| 1 Year | rr_ExpenseExampleYear01 | $ 80 | |||||||||||||
| 3 Years | rr_ExpenseExampleYear03 | 284 | |||||||||||||
| 5 Years | rr_ExpenseExampleYear05 | 504 | |||||||||||||
| 10 Years | rr_ExpenseExampleYear10 | $ 1,140 | |||||||||||||
| 1 Year | rr_AverageAnnualReturnYear01 | (19.89%) | |||||||||||||
| 5 Years | rr_AverageAnnualReturnYear05 | 6.36% | |||||||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | 7.70% | |||||||||||||
| Inception Date | rr_AverageAnnualReturnInceptionDate | Nov. 15, 2016 | |||||||||||||
| Lazard US Equity Concentrated Portfolio | R6 | S&P 500 Index | |||||||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | 11.68% | |||||||||||||
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