v3.26.1
Fees and Expenses
Dec. 31, 2025
Lazard Retirement Developing Markets Equity Portfolio  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

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] Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lazard Retirement Developing Markets Equity Portfolio
Total
Service
Investor
Management Fees (as a percentage of Assets)   1.00% 1.00%
Distribution and Service (12b-1) Fees   0.25% 0.00%
Other Expenses (as a percentage of Assets): [1]   0.18% 0.18%
Expenses (as a percentage of Assets)   1.43% 1.18%
Fee Waiver or Reimbursement [2]   (0.08%) (0.08%)
Net Expenses (as a percentage of Assets)   1.35% 1.10%
Fee Waiver or Reimbursement over Assets, Date of Termination May 1, 2027    
[1] Based on estimated amounts for the current fiscal year.
[2] 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 1.35% and 1.10% 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.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

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 $10,000 in the Portfolio for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same, giving effect to the expense limitation agreement in year one only. The Example does not reflect fees and expenses imposed by the Participating Insurance Companies under the Policies; if they were reflected, the figures in the Example would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Lazard Retirement Developing Markets Equity Portfolio - USD ($)
Service
Investor
Expense Example, with Redemption, 1 Year $ 143 $ 117
Expense Example, with Redemption, 3 Years $ 449 $ 372
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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.
Lazard Retirement Developing Markets Equity Portfolio | Service  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement Developing Markets Equity Portfolio | Investor  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement Emerging Markets Equity Portfolio  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

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.
Operating Expenses Caption [Optional Text] Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lazard Retirement Emerging Markets Equity Portfolio
Service
Investor
Management Fees (as a percentage of Assets) 1.00% 1.00%
Distribution and Service (12b-1) Fees 0.25% 0.00%
Other Expenses (as a percentage of Assets): 0.14% 0.14%
Expenses (as a percentage of Assets) 1.39% 1.14%
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

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 $10,000 in the Portfolio for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same, giving effect to the expense limitation agreement in year one only. The Example does not reflect fees and expenses imposed by the Participating Insurance Companies under the Policies; if they were reflected, the figures in the Example would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Lazard Retirement Emerging Markets Equity Portfolio - USD ($)
Service
Investor
Expense Example, with Redemption, 1 Year $ 142 $ 116
Expense Example, with Redemption, 3 Years 440 362
Expense Example, with Redemption, 5 Years 761 628
Expense Example, with Redemption, 10 Years $ 1,669 $ 1,386
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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 30% of the average value of its portfolio.
Portfolio Turnover, Rate 30.00%
Lazard Retirement Emerging Markets Equity Advantage Portfolio  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

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] Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lazard Retirement Emerging Markets Equity Advantage Portfolio
Total
Service
Investor
Management Fees (as a percentage of Assets)   0.75% 0.75%
Distribution and Service (12b-1) Fees   0.25% 0.00%
Other Expenses (as a percentage of Assets): [1]   0.18% 0.18%
Expenses (as a percentage of Assets)   1.18% 0.93%
Fee Waiver or Reimbursement [2]   (0.03%) (0.03%)
Net Expenses (as a percentage of Assets)   1.15% 0.90%
Fee Waiver or Reimbursement over Assets, Date of Termination May 1, 2027    
[1] Based on estimated amounts for the current fiscal year.
[2] 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 1.15% and .90% 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.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

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 $10,000 in the Portfolio for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same, giving effect to the expense limitation agreement in year one only. The Example does not reflect fees and expenses imposed by the Participating Insurance Companies under the Policies; if they were reflected, the figures in the Example would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Lazard Retirement Emerging Markets Equity Advantage Portfolio - USD ($)
Service
Investor
Expense Example, with Redemption, 1 Year $ 117 $ 92
Expense Example, with Redemption, 3 Years $ 372 $ 293
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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.
Lazard Retirement Emerging Markets Equity Advantage Portfolio | Service  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement Emerging Markets Equity Advantage Portfolio | Investor  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement Enhanced Opportunities Portfolio  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

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] Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lazard Retirement Enhanced Opportunities Portfolio
Total
Service
Investor
Management Fees (as a percentage of Assets)   0.95% 0.95%
Distribution and Service (12b-1) Fees   0.25% 0.00%
Component1 Other Expenses [1]   0.12% 0.12%
Component2 Other Expenses [2]   0.35% 0.35%
Component3 Other Expenses   0.83% 0.83%
Other Expenses (as a percentage of Assets):   1.30% 1.30%
Acquired Fund Fees and Expenses [3]   0.03% 0.03%
Expenses (as a percentage of Assets)   2.53% 2.28%
Fee Waiver or Reimbursement [4]   (0.58%) (0.58%)
Net Expenses (as a percentage of Assets) [5]   1.95% 1.70%
Fee Waiver or Reimbursement over Assets, Date of Termination May 1, 2027    
[1] Dividend Expenses on Securities Sold Short reflect dividends paid on borrowed securities and are an expense of short sales. Such expenses are required to be treated as a Portfolio expense for accounting purposes and are not payable to Lazard Asset Management LLC (the “Investment Manager”). Any dividends paid on securities sold short will vary based on the Portfolio’s use of those investments as it seeks to achieve its investment objective.
[2] Borrowing Expenses on Securities Sold Short result from the Portfolio’s use of custody arrangements to execute short sales. Such expenses are required to be treated as a Portfolio expense for accounting purposes and are not payable to the Investment Manager. Any borrowing expenses as a result of securities sold short will vary based on the Portfolio’s use of those investments as it seeks to achieve its investment objective.
[3] Based on estimated amounts for the current fiscal year.
[4] Reflects a contractual agreement by 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 1.45% and 1.20% of the average daily net assets of the Portfolio’s Service Shares and Investor Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, dividend and interest expenses on securities sold short, 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.
[5] Excluding Dividend and Borrowing Expenses on Securities Sold Short and Acquired Fund Fees and Expenses, the Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement are 1.45% and 1.20% of the Portfolio’s Service Shares and Investor Shares, respectively.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

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 $10,000 in the Portfolio for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same, giving effect to the expense limitation agreement in year one only. The Example does not reflect fees and expenses imposed by the Participating Insurance Companies under the Policies; if they were reflected, the figures in the Example would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Lazard Retirement Enhanced Opportunities Portfolio - USD ($)
Service
Investor
Expense Example, with Redemption, 1 Year $ 198 $ 173
Expense Example, with Redemption, 3 Years $ 732 $ 657
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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.
Lazard Retirement Enhanced Opportunities Portfolio | Service  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement Enhanced Opportunities Portfolio | Investor  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement Equity Franchise Portfolio  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

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.
Operating Expenses Caption [Optional Text] Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lazard Retirement Equity Franchise Portfolio
Service
Investor
Management Fees (as a percentage of Assets) 0.80% 0.80%
Distribution and Service (12b-1) Fees 0.25% 0.00%
Other Expenses (as a percentage of Assets): [1] 0.14% 0.14%
Acquired Fund Fees and Expenses [1] 0.01% 0.01%
Expenses (as a percentage of Assets) [2] 1.20% 0.95%
[1] Based on estimated amounts for the current fiscal year.
[2] Excluding Acquired Fund Fees and Expenses, the Total Annual Portfolio Operating Expenses are 1.19% and .94% of the Portfolio’s Service Shares and Investor Shares, respectively.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

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 $10,000 in the Portfolio for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same. The Example does not reflect fees and expenses imposed by the Participating Insurance Companies under the Policies; if they were reflected, the figures in the Example would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Lazard Retirement Equity Franchise Portfolio - USD ($)
Service
Investor
Expense Example, with Redemption, 1 Year $ 122 $ 97
Expense Example, with Redemption, 3 Years $ 381 $ 303
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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.
Lazard Retirement Equity Franchise Portfolio | Service  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement Equity Franchise Portfolio | Investor  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement Global Dynamic Multi-Asset Portfolio  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

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] Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lazard Retirement Global Dynamic Multi-Asset Portfolio
Total
Service
Investor
Management Fees (as a percentage of Assets)   0.75% 0.75%
Distribution and Service (12b-1) Fees   0.25% 0.00%
Other Expenses (as a percentage of Assets):   0.23% 0.70%
Acquired Fund Fees and Expenses   0.01% 0.01%
Expenses (as a percentage of Assets)   1.24% 1.46%
Fee Waiver or Reimbursement [1]   (0.18%) (0.55%)
Net Expenses (as a percentage of Assets) [2]   1.06% 0.91%
Fee Waiver or Reimbursement over Assets, Date of Termination May 1, 2027    
[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 for Service Shares and until May 1, 2036 for Investor Shares, to the extent Total Annual Portfolio Operating Expenses exceed 1.05% and .90% 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] Excluding Acquired Fund Fees and Expenses, the Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement are 1.05% and .90% of the Portfolio’s Service Shares and Investor Shares, respectively.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

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 $10,000 in the Portfolio for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same, giving effect to the expense limitation agreement described above. The Example does not reflect fees and expenses imposed by the Participating Insurance Companies under the Policies; if they were reflected, the figures in the Example would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Lazard Retirement Global Dynamic Multi-Asset Portfolio - USD ($)
Service
Investor
Expense Example, with Redemption, 1 Year $ 108 $ 93
Expense Example, with Redemption, 3 Years 376 290
Expense Example, with Redemption, 5 Years 664 504
Expense Example, with Redemption, 10 Years $ 1,484 $ 1,120
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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 93% of the average value of its portfolio.
Portfolio Turnover, Rate 93.00%
Lazard Retirement Global Listed Infrastructure Portfolio  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

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.
Operating Expenses Caption [Optional Text] Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lazard Retirement Global Listed Infrastructure Portfolio
Service
Investor
Management Fees (as a percentage of Assets) 0.90% 0.90%
Distribution and Service (12b-1) Fees 0.25% 0.00%
Other Expenses (as a percentage of Assets): [1] 0.15% 0.15%
Acquired Fund Fees and Expenses [1] 0.01% 0.01%
Expenses (as a percentage of Assets) [2] 1.31% 1.06%
[1] Based on estimated amounts for the current fiscal year.
[2] Excluding Acquired Fund Fees and Expenses, the Total Annual Portfolio Operating Expenses are 1.30% and 1.05% of the Portfolio’s Service Shares and Investor Shares, respectively.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

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 $10,000 in the Portfolio for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same. The Example does not reflect fees and expenses imposed by the Participating Insurance Companies under the Policies; if they were reflected, the figures in the Example would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Lazard Retirement Global Listed Infrastructure Portfolio - USD ($)
Service
Investor
Expense Example, with Redemption, 1 Year $ 133 $ 108
Expense Example, with Redemption, 3 Years $ 415 $ 337
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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.
Lazard Retirement Global Listed Infrastructure Portfolio | Service  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement Global Listed Infrastructure Portfolio | Investor  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement International Small Cap Equity Portfolio  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

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.
Operating Expenses Caption [Optional Text] Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lazard Retirement International Small Cap Equity Portfolio
Service
Investor
Management Fees (as a percentage of Assets) 0.75% 0.75%
Distribution and Service (12b-1) Fees 0.25% 0.00%
Other Expenses (as a percentage of Assets): [1] 0.17% 0.17%
Expenses (as a percentage of Assets) 1.17% 0.92%
[1] Based on estimated amounts for the current fiscal year.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

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 $10,000 in the Portfolio for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same. The Example does not reflect fees and expenses imposed by the Participating Insurance Companies under the Policies; if they were reflected, the figures in the Example would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Lazard Retirement International Small Cap Equity Portfolio - USD ($)
Service
Investor
Expense Example, with Redemption, 1 Year $ 119 $ 94
Expense Example, with Redemption, 3 Years $ 372 $ 293
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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.
Lazard Retirement International Small Cap Equity Portfolio | Service  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement International Small Cap Equity Portfolio | Investor  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement International Equity Portfolio  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

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] Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lazard Retirement International Equity Portfolio
Total
Service
Investor
Management Fees (as a percentage of Assets)   0.75% 0.75%
Distribution and Service (12b-1) Fees   0.25% 0.00%
Other Expenses (as a percentage of Assets):   0.19% 0.19% [1]
Expenses (as a percentage of Assets)   1.19% 0.94%
Fee Waiver or Reimbursement [2]   (0.09%) (0.09%)
Net Expenses (as a percentage of Assets)   1.10% 0.85%
Fee Waiver or Reimbursement over Assets, Date of Termination May 1, 2027    
[1] Based on estimated amounts for the current fiscal year, using amounts for Service Shares from the last fiscal year.
[2] 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 .85% 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.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

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 $10,000 in the Portfolio for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same, giving effect to the expense limitation agreement in year one only. The Example does not reflect fees and expenses imposed by the Participating Insurance Companies under the Policies; if they were reflected, the figures in the Example would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Lazard Retirement International Equity Portfolio - USD ($)
Service
Investor
Expense Example, with Redemption, 1 Year $ 112 $ 87
Expense Example, with Redemption, 3 Years 369 291
Expense Example, with Redemption, 5 Years 646 511
Expense Example, with Redemption, 10 Years $ 1,435 $ 1,146
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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 45% of the average value of its portfolio.
Portfolio Turnover, Rate 45.00%
Lazard Retirement International Equity Portfolio | Investor  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year, using amounts for Service Shares from the last fiscal year.
Lazard Retirement International Equity Select Portfolio  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

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.
Operating Expenses Caption [Optional Text] Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lazard Retirement International Equity Select Portfolio
Service
Investor
Management Fees (as a percentage of Assets) 0.65% 0.65%
Distribution and Service (12b-1) Fees 0.25% 0.00%
Other Expenses (as a percentage of Assets): [1] 0.25% 0.25%
Expenses (as a percentage of Assets) 1.15% 0.90%
[1] Based on estimated amounts for the current fiscal year.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

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 $10,000 in the Portfolio for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same. The Example does not reflect fees and expenses imposed by the Participating Insurance Companies under the Policies; if they were reflected, the figures in the Example would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Lazard Retirement International Equity Select Portfolio - USD ($)
Service
Investor
Expense Example, with Redemption, 1 Year $ 117 $ 92
Expense Example, with Redemption, 3 Years $ 365 $ 287
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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.
Lazard Retirement International Equity Select Portfolio | Service  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement International Equity Select Portfolio | Investor  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement International Quality Growth Portfolio  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

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] Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lazard Retirement International Quality Growth Portfolio
Total
Service
Investor
Management Fees (as a percentage of Assets)   0.75% 0.75%
Distribution and Service (12b-1) Fees   0.25% 0.00%
Other Expenses (as a percentage of Assets): [1]   0.20% 0.20%
Expenses (as a percentage of Assets)   1.20% 0.95%
Fee Waiver or Reimbursement [2]   (0.10%) (0.10%)
Net Expenses (as a percentage of Assets)   1.10% 0.85%
Fee Waiver or Reimbursement over Assets, Date of Termination May 1, 2027    
[1] Based on estimated amounts for the current fiscal year.
[2] 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 .85% 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.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

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 $10,000 in the Portfolio for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same, giving effect to the expense limitation agreement in year one only. The Example does not reflect fees and expenses imposed by the Participating Insurance Companies under the Policies; if they were reflected, the figures in the Example would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Lazard Retirement International Quality Growth Portfolio - USD ($)
Service
Investor
Expense Example, with Redemption, 1 Year $ 112 $ 87
Expense Example, with Redemption, 3 Years $ 371 $ 293
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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.
Lazard Retirement International Quality Growth Portfolio | Service  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement International Quality Growth Portfolio | Investor  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement International Strategic Equity Portfolio  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

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.
Operating Expenses Caption [Optional Text] Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lazard Retirement International Strategic Equity Portfolio
Service
Investor
Management Fees (as a percentage of Assets) 0.75% 0.75%
Distribution and Service (12b-1) Fees 0.25% 0.00%
Other Expenses (as a percentage of Assets): [1] 0.16% 0.16%
Expenses (as a percentage of Assets) 1.16% 0.91%
[1] Based on estimated amounts for the current fiscal year.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

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 $10,000 in the Portfolio for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same. The Example does not reflect fees and expenses imposed by the Participating Insurance Companies under the Policies; if they were reflected, the figures in the Example would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Lazard Retirement International Strategic Equity Portfolio - USD ($)
Service
Investor
Expense Example, with Redemption, 1 Year $ 118 $ 93
Expense Example, with Redemption, 3 Years $ 368 $ 290
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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.
Lazard Retirement International Strategic Equity Portfolio | Service  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement International Strategic Equity Portfolio | Investor  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement Opportunistic Strategies Portfolio  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

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] Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lazard Retirement Opportunistic Strategies Portfolio
Total
Service
Investor
Management Fees (as a percentage of Assets)   1.00% 1.00%
Distribution and Service (12b-1) Fees   0.25% 0.00%
Other Expenses (as a percentage of Assets): [1]   0.13% 0.13%
Acquired Fund Fees and Expenses [1]   0.18% 0.18%
Expenses (as a percentage of Assets)   1.56% 1.31%
Fee Waiver or Reimbursement [2]   (0.11%) (0.11%)
Net Expenses (as a percentage of Assets) [3]   1.45% 1.20%
Fee Waiver or Reimbursement over Assets, Date of Termination May 1, 2027    
[1] Based on estimated amounts for the current fiscal year.
[2] 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 1.27% and 1.02% of the average daily net assets of the Portfolio’s Service Shares and Investor Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, dividend and interest expenses on securities sold short, 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.
[3] Excluding Acquired Fund Fees and Expenses, the Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement are 1.27% and 1.02% of the Portfolio’s Service Shares and Investor Shares, respectively.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

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 $10,000 in the Portfolio for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same, giving effect to the expense limitation agreement in year one only. The Example does not reflect fees and expenses imposed by the Participating Insurance Companies under the Policies; if they were reflected, the figures in the Example would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Lazard Retirement Opportunistic Strategies Portfolio - USD ($)
Service
Investor
Expense Example, with Redemption, 1 Year $ 148 $ 122
Expense Example, with Redemption, 3 Years $ 482 $ 404
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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.
Lazard Retirement Opportunistic Strategies Portfolio | Service  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement Opportunistic Strategies Portfolio | Investor  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement Real Assets Portfolio  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

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.
Operating Expenses Caption [Optional Text] Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lazard Retirement Real Assets Portfolio
Total
Service
Investor
Management Fees (as a percentage of Assets)   0.65% 0.65%
Distribution and Service (12b-1) Fees   0.25% 0.00%
Other Expenses (as a percentage of Assets): [1]   0.20% 0.20%
Acquired Fund Fees and Expenses [1]   0.06% 0.06%
Expenses (as a percentage of Assets)   1.16% 0.91%
Fee Waiver or Reimbursement [2]   (0.05%) (0.05%)
Net Expenses (as a percentage of Assets) [3]   1.11% 0.86%
Fee Waiver or Reimbursement over Assets, Date of Termination May 1, 2027    
[1] Based on estimated amounts for the current fiscal year. Other Expenses and Total Annual Portfolio Operating Expenses include the estimated expenses of the Portfolio’s subsidiary, which will vary based on the amount of the Portfolio’s investment in the subsidiary. The expenses of the subsidiary included in Other Expenses reflect the Portfolio’s anticipated average allocation to the subsidiary.
[2] 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 1.05% and .80% 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.
[3] Excluding Acquired Fund Fees and Expenses, the Total Annual Portfolio Operating Expenses After Fee Waiver and/or Expense Reimbursement are 1.05% and .80% of the Portfolio’s Service Shares and Investor Shares, respectively.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

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 $10,000 in the Portfolio for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same, giving effect to the expense limitation agreement in year one only. The Example does not reflect fees and expenses imposed by the Participating Insurance Companies under the Policies; if they were reflected, the figures in the Example would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Lazard Retirement Real Assets Portfolio - USD ($)
Service
Investor
Expense Example, with Redemption, 1 Year $ 113 $ 88
Expense Example, with Redemption, 3 Years $ 364 $ 285
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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.
Lazard Retirement Real Assets Portfolio | Service  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year. Other Expenses and Total Annual Portfolio Operating Expenses include the estimated expenses of the Portfolio’s subsidiary, which will vary based on the amount of the Portfolio’s investment in the subsidiary. The expenses of the subsidiary included in Other Expenses reflect the Portfolio’s anticipated average allocation to the subsidiary.
Lazard Retirement Real Assets Portfolio | Investor  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year. Other Expenses and Total Annual Portfolio Operating Expenses include the estimated expenses of the Portfolio’s subsidiary, which will vary based on the amount of the Portfolio’s investment in the subsidiary. The expenses of the subsidiary included in Other Expenses reflect the Portfolio’s anticipated average allocation to the subsidiary.
Lazard Retirement US Convertibles Portfolio  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

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] Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lazard Retirement US Convertibles Portfolio
Total
Service Shares
Investor Shares
Management Fees (as a percentage of Assets)   0.60% 0.60%
Distribution and Service (12b-1) Fees   0.25% 0.00%
Other Expenses (as a percentage of Assets): [1]   0.24% 0.24%
Expenses (as a percentage of Assets)   1.09% 0.84%
Fee Waiver or Reimbursement [2]   (0.09%) (0.09%)
Net Expenses (as a percentage of Assets)   1.00% 0.75%
Fee Waiver or Reimbursement over Assets, Date of Termination May 1, 2027    
[1] Based on estimated amounts for the current fiscal year.
[2] 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 1.00% and .75% 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.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

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 $10,000 in the Portfolio for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same, giving effect to the expense limitation agreement in year one only. The Example does not reflect fees and expenses imposed by the Participating Insurance Companies under the Policies; if they were reflected, the figures in the Example would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Lazard Retirement US Convertibles Portfolio - USD ($)
Service Shares
Investor Shares
Expense Example, with Redemption, 1 Year $ 102 $ 77
Expense Example, with Redemption, 3 Years $ 338 $ 259
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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.
Lazard Retirement US Convertibles Portfolio | Service Shares  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement US Convertibles Portfolio | Investor Shares  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year.
Lazard Retirement US Small Cap Equity Select Portfolio  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

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] Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses - Lazard Retirement US Small Cap Equity Select Portfolio
Total
Service
Investor
Management Fees (as a percentage of Assets)   0.75% 0.75%
Distribution and Service (12b-1) Fees   0.25% 0.00%
Other Expenses (as a percentage of Assets):   0.41% 0.41% [1]
Expenses (as a percentage of Assets)   1.41% 1.16%
Fee Waiver or Reimbursement [2]   (0.31%) (0.21%)
Net Expenses (as a percentage of Assets)   1.10% 0.95%
Fee Waiver or Reimbursement over Assets, Date of Termination May 1, 2027    
[1] Based on estimated amounts for the current fiscal year, using amounts for Service Shares from the last fiscal year.
[2] 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.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

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 $10,000 in the Portfolio for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same, giving effect to the expense limitation agreement in year one only. The Example does not reflect fees and expenses imposed by the Participating Insurance Companies under the Policies; if they were reflected, the figures in the Example would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
Expense Example - Lazard Retirement US Small Cap Equity Select Portfolio - USD ($)
Service
Investor
Expense Example, with Redemption, 1 Year $ 112 $ 97
Expense Example, with Redemption, 3 Years 416 348
Expense Example, with Redemption, 5 Years 742 618
Expense Example, with Redemption, 10 Years $ 1,664 $ 1,390
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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 89.00%
Lazard Retirement US Small Cap Equity Select Portfolio | Investor  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] Based on estimated amounts for the current fiscal year, using amounts for Service Shares from the last fiscal year.