485BPOS

Securities Act File No. 33-40682
Investment Company Act File No. 811-06312

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933	/X/
Post-Effective Amendment No. 107	/X/
and
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940	/X/
Amendment No. 107	/X/

(Check appropriate box or boxes)

THE LAZARD FUNDS, INC.

(Exact Name of Registrant as Specified in Charter)

(212) 632-6000

(Registrant's Telephone Number, including Area Code)

30 Rockefeller Plaza, New York, New York 10112

(Address of Principal Executive: Number, Street, City, State, Zip Code)

Nathan A. Paul, Esq.
30 Rockefeller Plaza
New York, New York 10112
(Name and Address of Agent for Services)

Copy to:
Janna Manes, Esq.
Stroock & Stroock & Lavan LLP
180 Maiden Lane
New York, New York 10038-4982

It is proposed that this filing will become effective (check appropriate box)

X	immediately upon filing pursuant to paragraph (b)
	on (DATE) pursuant to paragraph (b)
	60 days after filing pursuant to paragraph (a)(1)
	on (DATE) pursuant to paragraph (a)(1)
	75 days after filing pursuant to paragraph (a)(2)
	on (DATE) pursuant to paragraph (a)(2) of Rule 485.
If appropriate, check the following box:
		this post-effective amendment designates a new effective date for a previously filed post-effective amendment.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant certifies that it meets all of the requirements for effectiveness of this Amendment to the Registration Statement under Rule 485(b) of the Securities Act of 1933 and has duly caused this Amendment to the Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of New York, and State of New York, on the 21st day of May, 2015.

THE LAZARD FUNDS, INC.
By:	/s/ Charles L. Carroll
	Charles L. Carroll, Chief Executive Officer

Pursuant to the requirements of the Securities Act of 1933, this Amendment to Registration Statement has been signed below by the following persons in the capacities and on the dates indicated.

/s/ Charles L. Carroll Charles L. Carroll	President and Director	May 21, 2015
/s/ Stephen St. Clair Stephen St. Clair	Treasurer and Chief Financial Officer	May 21, 2015
/s/ Ashish Bhutani Ashish Bhutani	Director	May 21, 2015
/s/ Franci J. Blassberg* Franci J. Blassberg	Director	May 21, 2015
/s/ Kenneth S. Davidson* Kenneth S. Davidson	Director	May 21, 2015
/s/ Nancy A. Eckl* Nancy A. Eckl	Director	May 21, 2015
/s/ Trevor W. Morrison* Trevor W. Morrison	Director	May 21, 2015
/s/ Richard Reiss, Jr.* Richard Reiss, Jr.	Director	May 21, 2015
/s/ Robert M. Solmson* Robert M. Solmson	Director	May 21, 2015
*By: /s/ Nathan A. Paul Attorney-in-fact, Nathan A. Paul

EXHIBIT INDEX

Exhibit No.	Description
EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Taxonomy Extension Schema Document
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-101.LAB	XBRL Taxonomy Extension Labels Linkbase
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase

XML

Lazard International Strategic Equity Portfolio

Lazard International Strategic Equity Portfolio

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard International Strategic Equity Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard International Strategic Equity Portfolio	Institutional Shares	Open Shares	R6 Shares
Management Fees	0.75%	0.75%	0.75%
Distribution and Service (12b-1) Fees	none	0.25%	none
Other Expenses	0.09%	0.09%	0.09%	[1]
Total Annual Portfolio Operating Expenses	0.84%	1.09%	0.84%

Example

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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard International Strategic Equity Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	86	268	466	1,037
Open Shares	111	347	601	1,329
R6 Shares	86	268	466	1,037

Portfolio Turnover

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 33% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in equity securities, principally common stocks, of non-US companies whose principal activities are located in countries represented by the MSCI EAFE Index that the Investment Manager believes are undervalued based on their earnings, cash flow or asset values. The Portfolio also may invest up to 15% of its assets in securities of companies whose principal business activities are located in emerging market countries, although the allocation of the Portfolio’s assets to emerging market countries may vary from time to time.

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities.

The countries represented by the MSCI EAFE Index currently include: Australia, Austria, Belgium, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland and the United Kingdom.

Although the Portfolio is classified as “diversified” under the 1940 Act, it may invest in a smaller number of issuers than other, more diversified investment portfolios.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Focused Investing Risk. The Portfolio’s NAV 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.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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.

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard International Strategic Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. The bar chart shows how the performance of the Portfolio’s Institutional Shares has varied from year to year. Updated performance information is available at www.LazardNet.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.

Best Quarter:
6/30/09 23.21%

Worst Quarter:
9/30/11 -19.36%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

Average Annual Returns Lazard International Strategic Equity Portfolio	1 Year	5 Years	Life of Portfolio	Inception Date
Institutional Shares	(1.48%)	9.73%	7.10%	Oct. 31, 2005
Open Shares	(1.78%)	9.43%	5.30%	Feb. 03, 2006
R6 Shares	(1.48%)	9.73%	7.10%
After Taxes on Distributions Institutional Shares	(2.24%)	9.44%	6.58%
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	0.01%	7.83%	5.89%
MSCI EAFE Index (reflects no deduction for fees, expenses or taxes) (Institutional)	(4.90%)	5.33%	4.19%
MSCI EAFE Index (reflects no deduction for fees, expenses or taxes) (Open)	(4.90%)	5.33%	2.81%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard International Equity Select Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks long-term capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-05-01

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 80% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

80.00%

Expenses Restated to Reflect Current [Text]

rr_ExpensesRestatedToReflectCurrent

The Management Fee has been restated to reflect the current fee.

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Portfolio invests primarily in equity securities, including American Depositary Receipts (“ADRs”), Global Depositary Receipts (“GDRs”) and common stocks, of relatively large non-US companies with market capitalizations in the range of companies included in the MSCI EAFE Index (ranging from approximately $1.6 billion to $274.4 billion as of April 9, 2015) that the Investment Manager believes are undervalued based on their earnings, cash flow or asset values.

In choosing stocks for the Portfolio, the Investment Manager looks for established companies in economically developed countries, although the Portfolio may invest in securities of companies whose principal business activities are located in emerging market countries in an amount up to the current emerging markets component of the MSCI All Country World Index ex-US plus 15%. The allocation of the Portfolio’s assets to emerging market countries may vary from time to time.

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities.

Although the Portfolio is classified as “diversified” under the 1940 Act, it may invest in a smaller number of issuers than other, more diversified investment portfolios.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Focused Investing Risk. The Portfolio’s NAV 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.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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.

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 Year-by-Year Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard International Equity Select Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. 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.LazardNet.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.

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 International Equity Select Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The MSCI EAFE/All Country World Index ex-US Linked Index shown in the table is an unmanaged index created by the Investment Manager, which links the performance of the MSCI EAFE Index for all periods through June 30, 2010 (when the Portfolio’s benchmark index changed) and the MSCI All Country World Index ex-US for all periods thereafter.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:
6/30/09 18.73%

Worst Quarter:
9/30/11 -17.57%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

18.73%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(17.57%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

The MSCI EAFE/All Country World Index ex-US Linked Index shown in the table is an unmanaged index created by the Investment Manager, which links the performance of the MSCI EAFE Index for all periods through June 30, 2010 (when the Portfolio’s benchmark index changed) and the MSCI All Country World Index ex-US for all periods thereafter.

MSCI All Country World Index ex-US (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(3.87%)

5 Years

rr_AverageAnnualReturnYear05

4.43%

10 Years

rr_AverageAnnualReturnYear10

5.13%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

5.72%

MSCI EAFE/All Country World Index ex-US Linked Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(3.87%)

5 Years

rr_AverageAnnualReturnYear05

3.91%

10 Years

rr_AverageAnnualReturnYear10

3.73%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

4.34%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

^[1]

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

1.25%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

2.00%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.95%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.05%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

107

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

355

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

623

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,389

Annual Return 2005

rr_AnnualReturn2005

8.90%

Annual Return 2006

rr_AnnualReturn2006

23.01%

Annual Return 2007

rr_AnnualReturn2007

9.25%

Annual Return 2008

rr_AnnualReturn2008

(38.74%)

Annual Return 2009

rr_AnnualReturn2009

20.86%

Annual Return 2010

rr_AnnualReturn2010

8.49%

Annual Return 2011

rr_AnnualReturn2011

(7.14%)

Annual Return 2012

rr_AnnualReturn2012

21.59%

Annual Return 2013

rr_AnnualReturn2013

14.93%

Annual Return 2014

rr_AnnualReturn2014

(4.29%)

1 Year

rr_AverageAnnualReturnYear01

(4.29%)

5 Years

rr_AverageAnnualReturnYear05

6.15%

10 Years

rr_AverageAnnualReturnYear10

3.86%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

4.14%

Inception Date

rr_AverageAnnualReturnInceptionDate

May 31, 2001

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(4.31%)

5 Years

rr_AverageAnnualReturnYear05

5.90%

10 Years

rr_AverageAnnualReturnYear10

3.17%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

3.61%

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(1.97%)

5 Years

rr_AverageAnnualReturnYear05

5.05%

10 Years

rr_AverageAnnualReturnYear10

3.57%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

3.76%

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

^[1]

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

1.60%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

2.60%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(1.25%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.35%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

137

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

449

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

783

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,727

1 Year

rr_AverageAnnualReturnYear01

(4.76%)

5 Years

rr_AverageAnnualReturnYear05

5.79%

10 Years

rr_AverageAnnualReturnYear10

3.51%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

3.83%

Inception Date

rr_AverageAnnualReturnInceptionDate

May 31, 2001

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

^[1]

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

1.25%

^[3]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

2.00%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(1.00%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.00%

^[2]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

102

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

340

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

597

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,331

1 Year

rr_AverageAnnualReturnYear01

(4.29%)

5 Years

rr_AverageAnnualReturnYear05

6.15%

10 Years

rr_AverageAnnualReturnYear10

3.86%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

4.14%

[1] The Management Fee has been restated to reflect the current fee.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016 to the extent Total Annual Portfolio Operating Expenses exceed 1.05%, 1.35% and 1.00% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, and from May 2, 2016 to May 1, 2025, to the extent Total Annual Portfolio Operating Expenses exceed 1.15%, 1.45% and 1.10% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively. All limitations on Total Annual Portfolio Operating Expenses are exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio. Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement have been restated to reflect the current fee waiver and expense limitation arrangement.

[3] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Lazard Fundamental Long/Short Portfolio

Lazard Fundamental Long/Short Portfolio

Investment Objective

The Portfolio seeks capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard Fundamental Long/Short Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard Fundamental Long/Short Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		1.40%	1.40%	1.40%
Distribution and Service (12b-1) Fees		none	0.25%	none
Dividend and Interest Expenses on Securities Sold Short		1.50%	1.46%	1.50%	[1]
Remainder of Other Expenses		2.61%	3.17%	2.61%	[1]
Total Other Expenses		4.11%	4.63%	4.11%	[1]
Total Annual Portfolio Operating Expenses		5.51%	6.28%	5.51%
Fee Waiver and Expense Reimbursement	[2]	2.31%	2.87%	2.36%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	3.20%	3.41%	3.15%

Example

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard Fundamental Long/Short Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	323	1,439	2,544	5,257
Open Shares	344	1,603	2,831	5,765
R6 Shares	318	1,435	2,540	5,254

Portfolio Turnover

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. For the period from April 30, 2014 (commencement of operations) through December 31, 2014, the Portfolio’s portfolio turnover rate was 132% of the average value of its portfolio (excluding securities sold short).

Principal Investment Strategies

The Portfolio utilizes a long/short investment strategy through investments in equity securities, principally common stocks, and derivative instruments that provide exposure to such equity securities. The Investment Manager’s approach in managing the Portfolio is based on its bottom-up relative-value philosophy. Generally, the Investment Manager seeks to take long positions by investing in equity securities of companies with strong and/or improving financial productivity that have attractive valuations, and seeks to complement these long positions with short positions in respect of companies viewed by the Investment Manager to possess deteriorating fundamentals, unattractive valuations or other qualities warranting a short position, or those that represent a sector or market hedge. The Portfolio will generally have short positions through selling securities “short” and through investments in derivative instruments, principally swap agreements on individual securities, and may use short positions to seek to increase returns or to reduce risk. It is expected that the total gross exposure of the Portfolio will typically range from 0% to 200% of the Portfolio’s NAV and that the net exposure will typically range from -25% (net short position) to 100% of its NAV. As an example, if the Portfolio’s long investment exposure is 100% of its NAV and its short exposure is 75% of its NAV, the Portfolio would have a net long exposure of 25% of NAV.

Although the Portfolio’s investment focus is US companies, the Portfolio also may invest in non-US companies, including depositary receipts and shares. The Portfolio may invest in companies across the capitalization spectrum and also may invest in IPOs. At certain times, based on the currently existing market environment, the Investment Manager may not believe it is able to find sufficient opportunities to invest in equity securities and/or take short positions in equity securities and may determine to tactically shift the Portfolio to invest substantially in money market instruments, such as short-term US Treasury securities and certificates of deposit.

A short sale involves the sale of a security that the Portfolio does not own in the expectation of purchasing the same security (or a security exchangeable therefor) at a later date and at a lower price and profiting from the price decline. Similarly, when taking short positions with respect to securities through investments in derivative instruments, the Investment Manager is expecting the value of such securities to fall during the period of the Portfolio’s investment exposure.

In addition, the Portfolio may, but is not required to, invest in ETFs, enter into equity and currency swap agreements, and forward currency contracts; and purchase and sell options, including writing put and call options on securities (including ETFs), indexes and currencies, for hedging purposes or to seek to increase returns.

The Portfolio is classified as “non-diversified” under the 1940 Act, 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.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Short Position Risk. Short positions may involve substantial risks. If a short position appreciates in value during the period of the Portfolio’s investment, there will be a loss to the Portfolio that could be substantial. Short positions involve more risk than long positions because the maximum sustainable loss on a security purchased is limited to the amount paid for the security plus the transaction costs. However, the Portfolio’s potential loss on a short position is unlimited because, theoretically, there is no limit to the potential price increase of a security.

Swap Agreements and Other Derivatives Risk. Swap agreements and other derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Over-the-counter swap agreements, forward currency contracts, over-the-counter options on securities (including options on ETFs), indexes and currencies and other over-the-counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. These derivatives transactions, as well as the exchange-traded options in which the Portfolio may invest, are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related security, index, commodity, interest rate, currency or other reference asset. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions, even when entered into for hedging purposes, may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

Counterparty Credit Risk. The Portfolio’s investment strategy is dependent on counterparties to its securities borrowing transactions in connection with short sales of securities and counterparties to derivatives transactions. Transactions with such counterparties are subject to the risk of default by a counterparty, which could result in a loss of Portfolio assets used as collateral or the loss of monies owed to the Portfolio by a counterparty.

Leverage Risk. The use of leverage, which the Portfolio’s strategy entails, may magnify the Portfolio’s gains or losses.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

Market Direction Risk. Since the Portfolio will typically hold both long and short positions, an investment in the Portfolio will involve market risks associated with different types of investment decisions than those made for a typical “long only” fund. The Portfolio’s results will suffer both when there is a general market advance and the Portfolio holds significant “short” positions, or when there is a general market decline and the Portfolio holds significant “long” positions. In recent years, the markets have shown considerable volatility from day to day and even in intra-day trading.

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. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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.

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.

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. 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.

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 Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Non-Diversification Risk. The Portfolio’s NAV 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.

IPO Shares Risk. The prices of securities purchased in IPOs can be very volatile. The effect of IPOs on the Portfolio’s performance depends on a variety of factors, including the number of IPOs the Portfolio invests in relative to the size of the Portfolio and whether and to what extent a security purchased in an IPO appreciates or depreciates in value. As the Portfolio’s asset base increases, IPOs may have a diminished effect on the Portfolio’s performance.

ETF Risk. Shares of ETFs may trade at prices that vary from their NAVs, sometimes significantly. The shares of ETFs may trade at prices at, below or above their most recent NAV. In addition, the performance of an ETF pursuing a passive index-based strategy may diverge from the performance of the index. The Portfolio’s investments in ETFs are subject to the risks of such ETF’s investments, as well as to the general risks of investing in ETFs. Portfolio shares will bear not only the Portfolio’s management fees and operating expenses, but also their proportional share of the management fees and operating expenses of the ETFs in which the Portfolio invests. The Portfolio may be limited by the 1940 Act in the amount of its assets that may be invested in ETFs and unless an ETF has received an exemptive order from the Securities and Exchange Commission (the “SEC”) on which the Portfolio may rely or an exemption is available.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in high transaction costs and an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

Performance Bar Chart and Table

Because the Portfolio did not have a full calendar year of performance as of 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. Updated performance information is available at www.LazardNet.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.

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016 to the extent Total Annual Portfolio Operating Expenses exceed 1.70%, 1.95% and 1.65% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, dividend and interest expenses on securities sold short, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard Emerging Markets Debt Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks total return from current income and capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-05-01

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 204% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

204.00%

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Portfolio invests primarily in debt securities issued or guaranteed by governments, government agencies or supranational bodies or companies or other private-sector entities, including fixed and/or floating rate investment grade and non-investment grade bonds, convertible securities, commercial paper, CDOs, short- and medium-term obligations and other fixed-income obligations, and may invest in money market instruments such as certificates of deposit. The securities in which the Portfolio invests may be denominated in the US dollar, the Canadian dollar, the Euro, the Japanese yen, the Pound Sterling, or the local currency of the issuer.

Under normal circumstances, the Portfolio invests at least 80% of its assets in debt securities that are economically tied to emerging market countries. Emerging market countries include all countries not represented by the MSCI World Index. The Portfolio currently intends to focus its investments in Asia, Africa, the Middle East, Latin America and the developing countries of Europe, although the allocation of the Portfolio’s assets among countries and regions may vary from time to time based on the Investment Manager’s judgment and its analysis of market conditions.

The Portfolio may invest without limitation in securities rated below investment grade (e.g., lower than Baa by Moody’s or lower than BBB by S&P) (“junk bonds”) or securities that are unrated. Additionally, the Portfolio is not restricted to investments in securities of any particular maturity or duration. Duration is an estimate of the sensitivity of the price (the value of principal) of a fixed-income security to a change in interest rates. Generally, the longer the duration, the higher the expected volatility. For example, the market price of a fixed-income security with a duration of three years would be expected to decline 3% if interest rates rose 1%. Conversely, the market price of the same security would be expected to increase 3% if interest rates fell 1%.

The Portfolio may, but is not required to enter into forward currency contracts and credit default swaps, for hedging purposes or to seek to increase returns.

The Portfolio is classified as “non-diversified” under the 1940 Act, 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.

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.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Some debt securities may give the issuer the option to call, or redeem, the securities before their maturity. If securities held by the Portfolio are called during a time of declining interest rates (which is typically the case when issuers exercise options to call outstanding securities), the Portfolio may have to reinvest the proceeds in an investment offering a lower yield (and the Portfolio may not fully benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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. Currency investments could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies.

Liquidity Risk. The lack of a readily available market may limit the ability of the Portfolio to sell certain securities at the time and price it would like. The size of certain debt securities offerings of emerging markets issuers may be relatively smaller in size than debt offerings in more developed markets and, in some cases, the Portfolio, by itself or together with other Portfolios or other accounts managed by the Investment Manager, may hold a position in a security that is large relative to the typical trading volume for that security; these factors can make it difficult for the Portfolio to dispose of the position at the desired time or price.

Non-Diversification Risk. The Portfolio’s NAV 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.

Forward Currency Contracts and Other Derivatives Risk. Forward currency contracts and other derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Forward currency contracts, over-the-counter options on currencies, swap agreements and other over-the-counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. These derivatives transactions, as well as the exchange-traded options in which the Portfolio may invest, are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related currency, security or other reference asset. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions, even if entered into for hedging purposes, may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in high transaction costs and an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

Risk Lose Money [Text]

rr_RiskLoseMoney

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Risk Nondiversified Status [Text]

rr_RiskNondiversifiedStatus

The Portfolio’s NAV 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.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Emerging Markets Debt Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to those 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. Updated performance information is available at www.LazardNet.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.

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 Emerging Markets Debt Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to those of broad measures of market performance.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The 50% JPMorgan Emerging Market Bond Index Global Diversified Index/50% JPMorgan Government Bond Index—Emerging Markets Global Diversified Index shown in the table is an unmanaged index created by the Investment Manager, and is a 50/50 blend of the JPMorgan Emerging Market Bond Index Global Diversified Index and the JPMorgan Government Bond Index—Emerging Markets Global Diversified Index.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:
3/31/12 7.52%

Worst Quarter:
6/30/13 -7.60%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

7.52%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2013

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(7.60%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

The 50% JPMorgan Emerging Market Bond Index Global Diversified Index/50% JPMorgan Government Bond Index—Emerging Markets Global Diversified Index shown in the table is an unmanaged index created by the Investment Manager, and is a 50/50 blend of the JPMorgan Emerging Market Bond Index Global Diversified Index and the JPMorgan Government Bond Index—Emerging Markets Global Diversified Index.

JPMorgan Emerging Market Bond Index Global Diversified® Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

7.43%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

6.81%

JPMorgan Government Bond Index – Emerging Markets Global Diversified® Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(5.72%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(0.39%)

50% JPMorgan Emerging Market Bond Index Global Diversified Index/ 50% JPMorgan Government Bond Index – Emerging Markets Global Diversified Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

0.71%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

3.22%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.80%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.16%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

0.96%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.96%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

98

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

306

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

531

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,178

Annual Return 2012

rr_AnnualReturn2012

18.95%

Annual Return 2013

rr_AnnualReturn2013

(7.13%)

Annual Return 2014

rr_AnnualReturn2014

(2.07%)

1 Year

rr_AverageAnnualReturnYear01

(2.07%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

2.50%

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 28, 2011

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(2.77%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

0.68%

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(1.15%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

1.27%

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.80%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.66%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.71%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.41%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.30%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

132

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

433

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

756

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,671

1 Year

rr_AverageAnnualReturnYear01

(2.53%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

2.17%

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 28, 2011

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.80%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.16%

^[2]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

0.96%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.01%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.95%

^[1]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

97

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

305

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

530

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,177

1 Year

rr_AverageAnnualReturnYear01

(2.07%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

2.50%

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.00%, 1.30% and .95% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, and from May 2, 2016 through May 1, 2025, to the extent Total Annual Portfolio Operating Expenses exceed 1.10%, 1.40% and 1.05% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively. All limitations on Total Annual Portfolio Operating Expenses are exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard Master Alternatives Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks long-term capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-12-31

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. Because the Portfolio commenced investment operations on December 31, 2014, no portfolio turnover information is presented.

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year.

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Portfolio management team utilizes an asset allocation investment strategy whereby the Portfolio’s assets are invested dynamically in a number of alternative investment strategies managed by different portfolio management teams of the Investment Manager (“Investment Strategies”).

The Portfolio invests its assets primarily using the Investment Strategies described below. At any given time the Portfolio’s assets may not be allocated to all Investment Strategies and/or a significant portion of the Portfolio’s assets may be allocated to one Investment Strategy.

The investment approach and process for each Investment Strategy is as follows:

• The global equity long/short strategy seeks attractive risk-adjusted performance through a bottom-up stock selection process supported by fundamental research combined with a defined approach to hedging risk. This strategy seeks to purchase equity securities of companies that the portfolio management team believes have high sustainable or improving financial productivity and compelling valuations and to take short positions in companies that possess the opposite characteristics. The strategy typically invests the majority of its assets outside of the US.

• The US equity long/short strategy seeks to achieve attractive risk-adjusted returns through long positions in equity securities of companies with strong and/or improving financial productivity that have attractive valuations, and short positions in equity securities of companies viewed to possess deteriorating fundamentals, unattractive valuations or other qualities warranting a short position. Short positions may also be employed as a sector or market hedge. Although the strategy’s investment focus is US companies, the strategy also may invest in non- US companies. The strategy may invest in companies across the capitalization spectrum and also may invest in IPOs.

• The Japanese equity long/short strategy seeks to achieve long-term capital appreciation by investing long and short in a diversified portfolio of Japanese equities. This strategy generally seeks to take long positions in securities that the portfolio management team believes will go up in absolute value and take short positions in securities that the team believes will go down in absolute value.

• The emerging markets long/short equity strategy seeks to achieve attractive risk-adjusted returns through long and short positions in a diversified portfolio of emerging markets equities. This strategy utilizes the Investment Manager’s proprietary emerging markets quantitative model that employs a systematic, disciplined process that seeks to control risks and exposures across countries, sectors and issuer market capitalizations.

• The relative value convertible securities strategy is a hedged strategy investing primarily in convertible fixed income and preferred securities (including those rated below investment grade (“junk”)), with the objectives of current income and long-term capital appreciation. Bottom up fundamental credit, equity and quantitative analysis is used in conjunction with top down macroeconomic analysis. The strategy utilizes a relative value approach, focusing on convertible securities that are considered to have low volatility. It is expected that the strategy will invest primarily in small and mid cap companies. The strategy utilizes selective strategy level and position level hedges, seeking to minimize macro risk (equity and credit) and interest rate risk. The strategy may invest in convertible debt and preferred securities of any maturity and any quality.

The Portfolio will generally have short positions through selling securities “short” and through investments in derivative instruments, principally swap agreements on individual securities, and may use short positions to seek to increase returns or to reduce risk. A short sale involves the sale of a security that the Portfolio does not own in the expectation of purchasing the same security (or a security exchangeable therefor) at a later date and at a lower price and profiting from the price decline. Similarly, when taking short positions with respect to securities through investments in derivative instruments, the Investment Manager is expecting the value of such securities to fall during the period of the Portfolio’s investment exposure.

The Investment Strategies may invest in ETFs and similar products, which generally pursue a passive index-based strategy.

In addition, the Investment Strategies may, but are not required to, enter into futures and forward currency contracts and equity, interest rate, credit default and currency swap agreements; and write put and call options on securities (including ETFs), indexes and currencies, for hedging purposes or to seek to increase returns.

It is expected that the Portfolio will buy and sell securities, and take short positions in securities, frequently in connection with implementing its investment strategy.

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.

Short Position Risk. Short positions in equity securities may involve substantial risks. If a short position appreciates in value during the period of the Portfolio’s investment, there will be a loss to the Portfolio that could be substantial. Short positions involve more risk than long positions because the maximum sustainable loss on a security purchased is limited to the amount paid for the security plus the transaction costs. However, the Portfolio’s potential loss on a short position is unlimited because, theoretically, there is no limit to the potential price increase of a security.

Convertible Securities Risk. The market value of convertible securities generally performs like that of non-convertible fixed income securities; that is, their prices move inversely with changes in interest rates (i.e., as interest rates go up, prices go down). In addition, convertible securities are subject to the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Since it derives a portion of its value from the common stock into which it may be converted, a convertible security also is subject to the same types of market and issuer risks that apply to the underlying common stock.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bond”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non- investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Preferred Securities Risk. There are various risks associated with investing in preferred securities. In addition, unlike common stock, participation in the growth of an issuer may be limited.

• Credit risk is the risk that a security held by the Portfolio will decline in price or the issuer of the security will fail to make dividend, interest or principal payments when due because the issuer experiences a decline in its financial status.

• Interest rate risk is the risk that securities will decline in value because of changes in market interest rates. When market interest rates rise, the market value of such securities generally will fall.

• Preferred securities may include provisions that permit the issuer, at its discretion, to defer or omit distributions for a stated period without any adverse consequences to the issuer.

• Preferred securities are generally subordinated to bonds and other debt instruments in an issuer’s capital structure in terms of having priority to corporate income, claims to corporate assets and liquidation payments, and therefore will be subject to greater credit risk than more senior debt instruments.

• During periods of declining interest rates, an issuer may be able to exercise an option to call, or redeem, its issue at par earlier than the scheduled maturity. If this occurs during a time of lower or declining interest rates, the Portfolio may have to reinvest the proceeds in lower yielding securities (and the Portfolio may not benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

Swap Agreements and Other Derivatives Risk. Swap agreements and other derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Over-the-counter swap agreements, forward currency contracts, over-the-counter options on securities (including options on ETFs), indexes and currencies and other over-the-counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. These derivatives transactions, as well as the exchange-traded futures and options in which the Portfolio may invest, are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related index, commodity, interest rate, currency, security or other reference asset.

Counterparty Credit Risk. The Portfolio’s investment strategy is dependent on counterparties to its securities borrowing transactions in connection with short sales of securities and counterparties to derivatives transactions. Transactions with such counterparties are subject to the risk of default by a counterparty, which could result in a loss of Portfolio assets used as collateral or the loss of monies owed to the Portfolio by a counterparty.

Leverage Risk. The use of leverage, which the Portfolio’s strategy entails, may magnify the Portfolio’s gains or losses.

Value Investing Risk. The Portfolio invests in securities believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The securities in which the Portfolio invests may respond differently to market and other developments than other types of securities.

Quantitative Model Risk. The success of the Portfolio’s emerging markets long/short equity strategy depends largely upon effectiveness of the Investment Manager’s quantitative model. A quantitative model, such as the risk and other models used by the Investment Manager for the strategy requires adherence to a systematic, disciplined process. The Investment Manager’s ability to monitor and, if necessary, adjust its quantitative model could be adversely affected by various factors, including incorrect or outdated market and other data inputs. Factors that affect a security’s value can change over time, and these changes may not be reflected in the quantitative model. In addition, the factors used in quantitative analysis and the weight placed on those factors may not be predictive of a security’s value.

Multi-Strategy Risk. The Portfolio’s ability to achieve its investment objective depends in part on the Investment Manager’s skill in determining the Portfolio’s allocation among the Investment Strategies. Investment decisions for the Investment Strategies are made independently of one another and may conflict with each other.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

Market Direction Risk. Since the Portfolio will typically hold both long and short positions, an investment in the Portfolio will involve market risks associated with different types of investment decisions than those made for a typical “long only” fund. The Portfolio’s results will suffer both when there is a general market advance and the Portfolio holds significant “short” positions, or when there is a general market decline and the Portfolio holds significant “long” positions.

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.

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. 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 Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

Japanese Securities Risk. To the extent the Portfolio invests significantly in the securities of companies in Japan, the Portfolio’s performance will be influenced by social, political and economic conditions within Japan and may be more volatile than the performance of funds that do not have significant investments in a single country.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

IPO Shares Risk. The prices of securities purchased in IPOs can be very volatile. The effect of IPOs on the Portfolio’s performance depends on a variety of factors, including the number of IPOs the Portfolio invests in relative to the size of the Portfolio and whether and to what extent a security purchased in an IPO appreciates or depreciates in value. As the Portfolio’s asset base increases, IPOs may have a diminished effect on the Portfolio’s performance.

ETF Risk. Shares of ETFs may trade at prices that vary from their NAVs, sometimes significantly. The shares of ETFs may trade at prices at, below or above their most recent NAV. In addition, the performance of an ETF pursuing a passive index-based strategy may diverge from the performance of the index. The Portfolio’s investments in ETFs are subject to the risks of such ETF’s investments, as well as to the general risks of investing in ETFs.

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.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in high transaction costs and an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

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

Because the Portfolio did not have a full calendar year of performance 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. Updated performance information is available at www.LazardNet.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.

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 did not have a full calendar year of performance 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.LazardNet.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.

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.40%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Dividend and Interest Expenses on Securities Sold Short

rr_Component1OtherExpensesOverAssets

0.89%

^[1]

Remainder of Other Expenses

rr_Component2OtherExpensesOverAssets

0.42%

Other Expenses

rr_OtherExpensesOverAssets

1.31%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

2.71%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.12%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

2.59%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

262

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

822

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.40%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Dividend and Interest Expenses on Securities Sold Short

rr_Component1OtherExpensesOverAssets

0.89%

^[1]

Remainder of Other Expenses

rr_Component2OtherExpensesOverAssets

0.47%

Other Expenses

rr_OtherExpensesOverAssets

1.36%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

3.01%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.17%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

2.84%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

287

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

904

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.40%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Dividend and Interest Expenses on Securities Sold Short

rr_Component1OtherExpensesOverAssets

0.89%

^[1]

Remainder of Other Expenses

rr_Component2OtherExpensesOverAssets

0.42%

Other Expenses

rr_OtherExpensesOverAssets

1.31%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

2.71%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.17%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

2.54%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

257

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

814

[1] "Other Expenses" are based on estimated amounts for the current fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through December 31, 2016 to the extent Total Annual Portfolio Operating Expenses exceed 1.70%, 1.95% and 1.65% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, dividend and interest expenses on securities sold short, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard Global Strategic Equity Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks long-term capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-08-29

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. For the period from August 29, 2014 (commencement of operations) through December 31, 2014, the Portfolio’s portfolio turnover rate was 24% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

24.00%

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year.

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Portfolio invests primarily in equity securities, principally common stocks, of companies that the Investment Manager believes are undervalued based on their earnings, cash flow or asset values. The Investment Manager seeks to realize the Portfolio’s investment objective primarily through stock selection, investing in companies believed to have sustainably high or improving returns and trading at attractive valuations. The Portfolio may invest in securities of companies whose principal business activities are located in emerging market countries, and the allocation of the Portfolio’s assets to emerging market countries may vary from time to time. The Portfolio may invest in securities of companies across the capitalization spectrum.

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities. In addition, under normal market conditions, the Portfolio invests significantly (at least 40%—unless market conditions are not deemed favorable by the Investment Manager, in which case the Portfolio would invest at least 30%) in non-US companies. The Investment Manager allocates the Portfolio’s assets among various regions and countries, including the United States (but in no less than three different countries). The allocation of the Portfolio’s assets among geographic sectors may shift from time to time based on the Investment Manager’s judgment and its analysis of market conditions.

Although the Portfolio is classified as “diversified” under the 1940 Act, it may invest in a smaller number of issuers than other, more diversified investment portfolios.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Focused Investing Risk. The Portfolio’s NAV 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.

Value Investing Risk. The Portfolio generally invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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.

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.

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

Because the Portfolio did not have a full calendar year of performance 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. Updated performance information is available at www.LazardNet.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.

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 did not have a full calendar year of performance 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.LazardNet.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.

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.29%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.14%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.04%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.10%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

112

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

357

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.34%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.44%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.04%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.40%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

143

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

451

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.29%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.14%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.09%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.05%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

107

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

350

[1] "Other Expenses" are based on estimated amounts for the current fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through August 29, 2016 to the extent Total Annual Portfolio Operating Expenses exceed 1.10%, 1.40% and 1.05% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

XML

Lazard Explorer Total Return Portfolio

Lazard Explorer Total Return Portfolio

Investment Objective

The Portfolio seeks total return from current income and capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard Explorer Total Return Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard Explorer Total Return Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		1.00%	1.00%	1.00%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		0.30%	0.53%	0.30%	[1]
Total Annual Portfolio Operating Expenses		1.30%	1.78%	1.30%
Fee Waiver and Expense Reimbursement	[2]	0.10%	0.28%	0.15%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	1.20%	1.50%	1.15%

Example

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard Explorer Total Return Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	122	402	703	1,559
Open Shares	153	533	938	2,072
R6 Shares	117	397	699	1,555

Portfolio Turnover

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 turnover rate was 182% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio utilizes a flexible total return investment strategy. It typically invests primarily in debt securities issued or guaranteed by governments, government agencies or supranational bodies; derivatives; debt securities issued by companies or other private-sector entities, including fixed and/or floating rate investment grade and non-investment grade bonds; short- and medium-term obligations; and other fixed-income obligations. At certain times, based on the currently existing market environment, the Investment Manager may not believe it is able to find sufficient opportunities to invest in these types of securities and may determine to tactically shift the Portfolio to invest substantially in money market instruments, such as short-term US Treasury securities and certificates of deposit. The securities in which the Portfolio invests may be denominated in any currency.

The Portfolio typically focuses its investments in securities of companies that are economically tied to emerging market countries. Emerging market countries include all countries not represented by the MSCI World Index. The allocation of the Portfolio’s assets among countries and regions may vary from time to time based on the Investment Manager’s judgment and its analysis of market conditions.

The Portfolio may invest without limitation in securities rated below investment grade (e.g., lower than Baa by Moody’s or lower than BBB by S&P) (“junk bonds”) or securities that are unrated. Additionally, the Portfolio is not restricted to investments in securities of any particular maturity or duration. Duration is an estimate of the sensitivity of the price (the value of principal) of a fixed-income security to a change in interest rates. Generally, the longer the duration, the higher the expected volatility. For example, the market price of a fixed-income security with a duration of three years would be expected to decline 3% if interest rates rose 1%. Conversely, the market price of the same security would be expected to increase 3% if interest rates fell 1%.

The Investment Manager expects to actively increase and decrease the Portfolio’s exposures to emerging market securities and currencies, and to significantly utilize derivatives. The Portfolio expects to utilize the following types of derivatives: forward contracts (including non- deliverable forward contracts, which settle in cash based on the difference between the agreed upon contract price or rate and the prevailing spot price or rate on an agreed notional amount), credit default swap agreements (including credit default swap agreements on an index or basket of securities or a single security), interest rate swap agreements and foreign currency options. Derivative positions may represent a substantial investment exposure through the economic leverage embedded in these positions. Although the Portfolio does not have a significant history of operations, based on the portfolios of other clients of the Investment Manager managed in a strategy similar to that to be employed for the Portfolio, the aggregate notional amount of derivative positions may typically be expected to range from 20% to 70% of the Portfolio’s assets. The Investment Manager may change the Portfolio’s investment exposures frequently, and positions may be held for only a short period of time as the Investment Manager seeks to add value in different market environments in pursuit of the Portfolio’s total return objective. An investment in the Portfolio involves a high degree of risk.

The Portfolio is classified as “non-diversified” under the 1940 Act, 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.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Some debt securities may give the issuer the option to call, or redeem, the securities before their maturity. If securities held by the Portfolio are called during a time of declining interest rates (which is typically the case when issuers exercise options to call outstanding securities), the Portfolio may have to reinvest the proceeds in an investment offering a lower yield (and the Portfolio may not fully benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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. Currency investments could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies.

Forward Currency Contracts and Other Derivatives Risk. Forward currency contracts and other derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Forward currency contracts, swap agreements, over-the-counter options on currencies and other over-the-counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. Changes in liquidity may result in significant, rapid and unpredictable changes in the prices for derivatives. These derivatives transactions, as well as the exchange-traded options in which the Portfolio may invest, are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related currency, security, interest rate or other reference asset. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Successful use of derivatives is subject to the Investment Manager’s ability to predict correctly movements in the direction of the relevant reference asset or market. Use of derivatives transactions may cause the Portfolio to experience significant losses.

Liquidity Risk. The lack of a readily available market may limit the ability of the Portfolio to sell certain securities at the time and price it would like. The size of certain debt securities offerings of emerging markets issuers may be relatively smaller in size than debt offerings in more developed markets and, in some cases, the Portfolio, by itself or together with other Portfolios or other accounts managed by the Investment Manager, may hold a position in a security that is large relative to the typical trading volume for that security; these factors can make it difficult for the Portfolio to dispose of the position at the desired time or price.

Non-Diversification Risk. The Portfolio’s NAV 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.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in high transaction costs and an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

Performance Bar Chart and Table Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Explorer Total Return Portfolio by showing the Portfolio’s performance for the first complete calendar year of operation compared to that of broad measures of market performance. The bar chart shows the performance of the Portfolio’s Institutional Shares. Updated performance information is available at www.LazardNet.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.

Best Quarter:
6/30/14 2.00%

Worst Quarter:
12/3/14 -3.94%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

The 50% JPMorgan Emerging Market Bond Index Global Diversified Index/50% JPMorgan Government Bond Index—Emerging Markets Global Diversified Index shown in the table is an unmanaged index created by the Investment Manager, and is a 50/50 blend of the JPMorgan Emerging Market Bond Index Global Diversified Index and the JPMorgan Government Bond Index—Emerging Markets Global Diversified Index.

Average Annual Returns Lazard Explorer Total Return Portfolio	1 Year	Life of Portfolio	Inception Date
Institutional Shares	(0.21%)	0.11%	Jun. 28, 2013
Open Shares	(0.52%)	(0.16%)	Jun. 28, 2013
R6 Shares	(0.21%)	0.11%
After Taxes on Distributions Institutional Shares	(2.44%)	(1.88%)
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	(0.09%)	(0.79%)
JPMorgan Emerging Market Bond Index Global Diversified® Index (reflects no deduction for fees, expenses or taxes)	7.43%	6.79%
JPMorgan Government Bond Index – Emerging Markets Global Diversified® Index (reflects no deduction for fees, expenses or taxes)	(5.72%)	(5.11%)
50% JPMorgan Emerging Market Bond Index Global Diversified Index/ 50% JPMorgan Government Bond Index – Emerging Markets Global Diversified Index (reflects no deduction for fees, expenses or taxes)	0.71%	0.72%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.20%, 1.50% and 1.15% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio. Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement have been restated to reflect the current fee waiver and expense limitation arrangement.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard Explorer Total Return Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks total return from current income and capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-05-01

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 turnover rate was 182% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

182.00%

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Portfolio utilizes a flexible total return investment strategy. It typically invests primarily in debt securities issued or guaranteed by governments, government agencies or supranational bodies; derivatives; debt securities issued by companies or other private-sector entities, including fixed and/or floating rate investment grade and non-investment grade bonds; short- and medium-term obligations; and other fixed-income obligations. At certain times, based on the currently existing market environment, the Investment Manager may not believe it is able to find sufficient opportunities to invest in these types of securities and may determine to tactically shift the Portfolio to invest substantially in money market instruments, such as short-term US Treasury securities and certificates of deposit. The securities in which the Portfolio invests may be denominated in any currency.

The Portfolio typically focuses its investments in securities of companies that are economically tied to emerging market countries. Emerging market countries include all countries not represented by the MSCI World Index. The allocation of the Portfolio’s assets among countries and regions may vary from time to time based on the Investment Manager’s judgment and its analysis of market conditions.

The Portfolio may invest without limitation in securities rated below investment grade (e.g., lower than Baa by Moody’s or lower than BBB by S&P) (“junk bonds”) or securities that are unrated. Additionally, the Portfolio is not restricted to investments in securities of any particular maturity or duration. Duration is an estimate of the sensitivity of the price (the value of principal) of a fixed-income security to a change in interest rates. Generally, the longer the duration, the higher the expected volatility. For example, the market price of a fixed-income security with a duration of three years would be expected to decline 3% if interest rates rose 1%. Conversely, the market price of the same security would be expected to increase 3% if interest rates fell 1%.

The Investment Manager expects to actively increase and decrease the Portfolio’s exposures to emerging market securities and currencies, and to significantly utilize derivatives. The Portfolio expects to utilize the following types of derivatives: forward contracts (including non- deliverable forward contracts, which settle in cash based on the difference between the agreed upon contract price or rate and the prevailing spot price or rate on an agreed notional amount), credit default swap agreements (including credit default swap agreements on an index or basket of securities or a single security), interest rate swap agreements and foreign currency options. Derivative positions may represent a substantial investment exposure through the economic leverage embedded in these positions. Although the Portfolio does not have a significant history of operations, based on the portfolios of other clients of the Investment Manager managed in a strategy similar to that to be employed for the Portfolio, the aggregate notional amount of derivative positions may typically be expected to range from 20% to 70% of the Portfolio’s assets. The Investment Manager may change the Portfolio’s investment exposures frequently, and positions may be held for only a short period of time as the Investment Manager seeks to add value in different market environments in pursuit of the Portfolio’s total return objective. An investment in the Portfolio involves a high degree of risk.

The Portfolio is classified as “non-diversified” under the 1940 Act, 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.

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.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Some debt securities may give the issuer the option to call, or redeem, the securities before their maturity. If securities held by the Portfolio are called during a time of declining interest rates (which is typically the case when issuers exercise options to call outstanding securities), the Portfolio may have to reinvest the proceeds in an investment offering a lower yield (and the Portfolio may not fully benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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. Currency investments could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies.

Forward Currency Contracts and Other Derivatives Risk. Forward currency contracts and other derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Forward currency contracts, swap agreements, over-the-counter options on currencies and other over-the-counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. Changes in liquidity may result in significant, rapid and unpredictable changes in the prices for derivatives. These derivatives transactions, as well as the exchange-traded options in which the Portfolio may invest, are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related currency, security, interest rate or other reference asset. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Successful use of derivatives is subject to the Investment Manager’s ability to predict correctly movements in the direction of the relevant reference asset or market. Use of derivatives transactions may cause the Portfolio to experience significant losses.

Liquidity Risk. The lack of a readily available market may limit the ability of the Portfolio to sell certain securities at the time and price it would like. The size of certain debt securities offerings of emerging markets issuers may be relatively smaller in size than debt offerings in more developed markets and, in some cases, the Portfolio, by itself or together with other Portfolios or other accounts managed by the Investment Manager, may hold a position in a security that is large relative to the typical trading volume for that security; these factors can make it difficult for the Portfolio to dispose of the position at the desired time or price.

Non-Diversification Risk. The Portfolio’s NAV 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.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in high transaction costs and an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

Risk Lose Money [Text]

rr_RiskLoseMoney

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Risk Nondiversified Status [Text]

rr_RiskNondiversifiedStatus

The Portfolio’s NAV 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.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Bar Chart and Table Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Explorer Total Return Portfolio by showing the Portfolio’s performance for the first complete calendar year of operation compared to that of broad measures of market performance. The bar chart shows the performance of the Portfolio’s Institutional Shares. Updated performance information is available at www.LazardNet.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.

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 Explorer Total Return Portfolio by showing the Portfolio’s performance for the first complete calendar year of operation compared to that of broad measures of market performance.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The 50% JPMorgan Emerging Market Bond Index Global Diversified Index/50% JPMorgan Government Bond Index—Emerging Markets Global Diversified Index shown in the table is an unmanaged index created by the Investment Manager, and is a 50/50 blend of the JPMorgan Emerging Market Bond Index Global Diversified Index and the JPMorgan Government Bond Index—Emerging Markets Global Diversified Index.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

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Best Quarter:
6/30/14 2.00%

Worst Quarter:
12/3/14 -3.94%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2014

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

2.00%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 03, 2014

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(3.94%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

The 50% JPMorgan Emerging Market Bond Index Global Diversified Index/50% JPMorgan Government Bond Index—Emerging Markets Global Diversified Index shown in the table is an unmanaged index created by the Investment Manager, and is a 50/50 blend of the JPMorgan Emerging Market Bond Index Global Diversified Index and the JPMorgan Government Bond Index—Emerging Markets Global Diversified Index.

JPMorgan Emerging Market Bond Index Global Diversified® Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

7.43%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

6.79%

JPMorgan Government Bond Index – Emerging Markets Global Diversified® Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(5.72%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(5.11%)

50% JPMorgan Emerging Market Bond Index Global Diversified Index/ 50% JPMorgan Government Bond Index – Emerging Markets Global Diversified Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

0.71%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

0.72%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.30%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.30%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.10%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.20%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

122

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

402

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

703

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,559

Annual Return 2014

rr_AnnualReturn2014

(0.21%)

1 Year

rr_AverageAnnualReturnYear01

(0.21%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

0.11%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 28, 2013

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(2.44%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(1.88%)

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(0.09%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(0.79%)

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.53%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.78%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.28%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.50%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

153

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

533

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

938

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,072

1 Year

rr_AverageAnnualReturnYear01

(0.52%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(0.16%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 28, 2013

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.30%

^[2]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.30%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.15%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.15%

^[1]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

117

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

397

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

699

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,555

1 Year

rr_AverageAnnualReturnYear01

(0.21%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

0.11%

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.20%, 1.50% and 1.15% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio. Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement have been restated to reflect the current fee waiver and expense limitation arrangement.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Lazard US Corporate Income Portfolio

Lazard US Corporate Income Portfolio

Investment Objective

The Portfolio seeks maximum total return from a combination of capital appreciation and current income.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard US Corporate Income Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard US Corporate Income Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		0.55%	0.55%	0.55%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		0.16%	0.75%	0.16%	[1]
Total Annual Portfolio Operating Expenses		0.71%	1.55%	0.71%
Fee Waiver and Expense Reimbursement	[2]	0.16%	0.70%	0.21%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	0.55%	0.85%	0.50%

Example

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard US Corporate Income Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	56	211	379	867
Open Shares	87	421	778	1,786
R6 Shares	51	206	374	863

Portfolio Turnover

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 28% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Portfolio invests at least 80% of its assets in fixed-income securities issued by corporations or other non-governmental issuers similar to corporations, which securities are tied economically to the US. The Portfolio typically invests a substantial portion of its assets, and may invest up to 100% of its assets, in securities rated, at the time of purchase, below investment grade by S&P or Moody’s and as low as C or Ca by S&P or Moody’s, respectively, or the unrated equivalent as determined by the Investment Manager (“junk bonds”); however, the Portfolio focuses such investments in below investment grade securities that may be considered “better quality” (i.e., rated B1 or higher by Moody’s, B+ or higher by S&P or the unrated equivalent as determined by the Investment Manager). The Portfolio may invest in dollar-denominated securities of non-US companies, including, to a limited extent, in emerging market companies.

Although the Portfolio may invest in fixed-income securities without regard to their maturity, the Portfolio’s average weighted maturity is expected to range between two and ten years.

Securities are evaluated based on their fundamental and structural characteristics. Valuation analysis is tailored to the specific asset class, but may include credit research, prepayment or call options, maturity, duration, coupon, currency and country risks. The Portfolio is constructed using a bottom-up discipline in which the Investment Manager follows a systematic process to seek out undervalued opportunities within each sector.

The Portfolio may invest up to 20% of its assets in other securities which need not be fixed-income securities as described above and need not be tied economically to the US.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

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. 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.

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Corporate Income Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. 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.LazardNet.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.

Best Quarter:
6/30/09 13.08%

Worst Quarter:
12/31/08 -15.96%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

Average Annual Returns Lazard US Corporate Income Portfolio	1 Year	5 Years	10 Years	Life of Portfolio	Inception Date
Institutional Shares	3.31%	7.63%	6.29%	4.32%	Jan. 02, 1998
Open Shares	3.01%	7.27%	6.00%	3.76%	Feb. 24, 1998
R6 Shares	3.31%	7.63%	6.29%	4.32%
After Taxes on Distributions Institutional Shares	0.98%	5.02%	3.56%	1.11%
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	1.87%	4.85%	3.74%	1.79%
Bank of America Merrill Lynch BB-B US Cash Pay Non-Distressed High Yield Index (reflects no deduction for fees, expenses or taxes) (Institutional)	3.69%	8.68%	6.54%	6.61%
Bank of America Merrill Lynch BB-B US Cash Pay Non-Distressed High Yield Index (reflects no deduction for fees, expenses or taxes) (Open)	3.69%	8.68%	6.54%	6.59%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed .55%, .85% and .50% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard Emerging Markets Equity Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks long-term capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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 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 12% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

12.00%

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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Portfolio invests primarily in equity securities, principally common stocks, of non-US companies whose principal activities are located in emerging market countries and that the Investment Manager believes are undervalued based on their earnings, cash flow or asset values.

Emerging market countries include all countries represented by the MSCI Emerging Markets Index, which currently includes: Brazil, Chile, China, Colombia, Czech Republic, Egypt, Greece, Hungary, India, Indonesia, Korea, Malaysia, Mexico, Peru, Philippines, Poland, Qatar, Russia, South Africa, Taiwan, Thailand, Turkey and United Arab Emirates.

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of companies whose principal business activities are located in emerging market countries.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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 Year-by-Year Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Emerging Markets Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. 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.LazardNet.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.

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 Emerging Markets Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:
6/30/09 34.12%

Worst Quarter:
12/31/08 -30.50%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

34.12%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(30.50%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

MSCI Emerging Markets Index (reflects no deduction for fees, expenses or taxes) (Institutional)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(2.19%)

5 Years

rr_AverageAnnualReturnYear05

1.78%

10 Years

rr_AverageAnnualReturnYear10

8.43%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

5.63%

MSCI Emerging Markets Index (reflects no deduction for fees, expenses or taxes) (Open)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(2.19%)

5 Years

rr_AverageAnnualReturnYear05

1.78%

10 Years

rr_AverageAnnualReturnYear10

8.43%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

6.33%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.09%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.09%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

111

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

347

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

601

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,329

Annual Return 2005

rr_AnnualReturn2005

41.40%

Annual Return 2006

rr_AnnualReturn2006

30.32%

Annual Return 2007

rr_AnnualReturn2007

33.05%

Annual Return 2008

rr_AnnualReturn2008

(47.88%)

Annual Return 2009

rr_AnnualReturn2009

69.82%

Annual Return 2010

rr_AnnualReturn2010

22.81%

Annual Return 2011

rr_AnnualReturn2011

(17.75%)

Annual Return 2012

rr_AnnualReturn2012

22.36%

Annual Return 2013

rr_AnnualReturn2013

(0.80%)

Annual Return 2014

rr_AnnualReturn2014

(4.16%)

1 Year

rr_AverageAnnualReturnYear01

(4.16%)

5 Years

rr_AverageAnnualReturnYear05

3.28%

10 Years

rr_AverageAnnualReturnYear10

9.81%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

7.41%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 15, 1994

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(4.79%)

5 Years

rr_AverageAnnualReturnYear05

2.70%

10 Years

rr_AverageAnnualReturnYear10

8.49%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

6.52%

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(1.29%)

5 Years

rr_AverageAnnualReturnYear05

2.95%

10 Years

rr_AverageAnnualReturnYear10

8.31%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

6.26%

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.12%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.37%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

139

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

434

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

750

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,646

1 Year

rr_AverageAnnualReturnYear01

(4.39%)

5 Years

rr_AverageAnnualReturnYear05

2.97%

10 Years

rr_AverageAnnualReturnYear10

9.49%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

7.24%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 08, 1997

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.09%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.09%

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

111

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

347

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

601

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,329

1 Year

rr_AverageAnnualReturnYear01

(4.16%)

5 Years

rr_AverageAnnualReturnYear05

3.28%

10 Years

rr_AverageAnnualReturnYear10

9.81%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

7.41%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard Capital Allocator Opportunistic Strategies Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks long-term capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-05-01

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 265% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

265.00%

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Portfolio utilizes an asset allocation strategy to invest in a global portfolio of uncorrelated assets that can include exposure, through underlying vehicles, to stocks, bonds, commodities and other investments.

The Portfolio invests primarily in exchange-traded open-end management investment companies and similar products, which generally pursue a passive index-based strategy (commonly known as ETFs), as well as actively managed closed-end management investment companies (“closed-end funds”) and exchange-traded notes (“ETNs” and collectively with ETFs and closed-end funds, “Underlying Funds”). ETFs and ETNs in which the Portfolio may invest include both ETFs and ETNs designed to correlate directly with an index and ETFs and ETNs designed to correlate inversely with an index and may include actively-managed ETFs. The Portfolio, through Underlying Funds in which it invests, may invest in non-US companies (including those in emerging markets), and the Portfolio also may invest directly in equity and debt securities in addition to its investments in Underlying Funds. The Portfolio’s investment portfolio is concentrated in a relatively small number of holdings (generally 10 to 30). Investors can invest directly in Underlying Funds and do not need to invest in Underlying Funds through mutual funds or separately managed accounts.

The Portfolio may, but is not required to, effect short sales of securities; enter into equity, total return and currency swap agreements, and forward currency contracts; and write put and covered call options on securities (including ETFs and ETNs), indexes and currencies, for hedging purposes or to seek to increase returns, including as a substitute for purchasing an Underlying Fund. A short sale involves the sale of a security that the Portfolio does not own in the expectation of purchasing the same security (or a security exchangeable therefor) at a later date and at a lower price and profiting from the price decline. Similarly, when taking short positions with respect to securities through investments in derivative instruments, the Investment Manager is expecting the value of such securities to fall during the period of the Portfolio’s investment exposure.

Although the Portfolio is classified as “diversified” under the 1940 Act, it may invest in a smaller number of issuers than other, more diversified, investment portfolios.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Underlying Funds Risk. Shares of ETFs and closed-end funds in which the Portfolio invests may trade at prices that vary from their NAVs, sometimes significantly. The shares of ETFs and closed-end funds may trade at prices at, below or above their most recent NAV. Shares of closed-end funds, in particular, frequently trade at persistent discounts to their NAV. In addition, the performance of an ETF pursuing a passive index-based strategy may diverge from the performance of the index. ETNs may not trade in the secondary market, but typically are redeemable by the issuer. The Portfolio’s investments in Underlying Funds are subject to the risks of Underlying Funds’ investments, as well as to the general risks of investing in Underlying Funds. Portfolio shares will bear not only the Portfolio’s management fees and operating expenses, but also their proportional share of the management fees and operating expenses of the ETFs and closed-end funds in which the Portfolio invests. While ETNs do not have management fees, they are subject to certain investor fees. ETNs are debt securities that, like ETFs, typically are listed on exchanges and their terms generally provide for a return that tracks specified market indexes. However, unlike ETFs and closed-end funds, ETNs are not registered investment companies and thus are not regulated under the 1940 Act. In addition, as debt securities, ETNs are subject to the additional risk of the creditworthiness of the issuer. ETNs typically do not make periodic interest payments.

The Portfolio may be limited by the 1940 Act in the amount of its assets that may be invested in ETFs and closed-end funds unless an ETF or a closed-end fund has received an exemptive order from the SEC on which the Portfolio may rely or an exemption is available.

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.

Emerging Market Risk. 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. The securities markets of emerging market countries have historically been extremely volatile. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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. Currency investments could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies.

Fixed Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Focused Investing Risk. The Portfolio’s NAV 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.

Short Position Risk. Short sales may involve substantial risks. Short sales of securities expose the Portfolio to the risk that it will be required to “cover” the short position at a time when the underlying security has appreciated in value, thus resulting in a loss to the Portfolio that could be substantial.

Derivatives Risk. Derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Over-the-counter swap agreements, forward currency contracts, over-the-counter options on securities (including options on ETFs and ETNs), indexes and currencies and other over-the-counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. These derivatives transactions, as well as the exchange-traded options in which the Portfolio may invest, are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related index, commodity, interest rate, currency, security or other reference asset. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions, even when entered into for hedging purposes, may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in high transaction costs and an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

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 Year-by-Year Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Capital Allocator Opportunistic Strategies 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. Updated performance information is available at www.LazardNet.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.

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 Capital Allocator Opportunistic Strategies 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 Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The Global Asset Allocation Blended Index is rebalanced quarterly and is a blended index constructed by the Investment Manager that is comprised of 60% MSCI World Index and 40% Barclays Capital US Aggregate Bond Index.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:
6/30/09 14.66%

Worst Quarter:
9/30/11 -10.44%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

14.66%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(10.44%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

The Global Asset Allocation Blended Index is rebalanced quarterly and is a blended index constructed by the Investment Manager that is comprised of 60% MSCI World Index and 40% Barclays Capital US Aggregate Bond Index.

MSCI World Index (reflects no deduction for fees, expenses or taxes) (Institutional)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

4.94%

5 Years

rr_AverageAnnualReturnYear05

10.20%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

4.78%

MSCI World Index (reflects no deduction for fees, expenses or taxes) (Open)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

4.94%

5 Years

rr_AverageAnnualReturnYear05

10.20%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

4.86%

Global Asset Allocation Blended Index (reflects no deduction for fees, expenses or taxes) (Institutional)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

5.36%

5 Years

rr_AverageAnnualReturnYear05

8.23%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

5.31%

Global Asset Allocation Blended Index (reflects no deduction for fees, expenses or taxes) (Open)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

5.36%

5 Years

rr_AverageAnnualReturnYear05

8.23%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

5.35%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Dividend and Interest Expenses on Securities Sold Short

rr_Component1OtherExpensesOverAssets

0.15%

Acquired Fund Fees and Expenses (Underlying Funds)

rr_AcquiredFundFeesAndExpensesOverAssets

34.00%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.49%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.13%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.36%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

138

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

458

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

801

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,768

Annual Return 2009

rr_AnnualReturn2009

21.21%

Annual Return 2010

rr_AnnualReturn2010

14.58%

Annual Return 2011

rr_AnnualReturn2011

(3.28%)

Annual Return 2012

rr_AnnualReturn2012

9.16%

Annual Return 2013

rr_AnnualReturn2013

12.22%

Annual Return 2014

rr_AnnualReturn2014

4.40%

1 Year

rr_AverageAnnualReturnYear01

4.40%

5 Years

rr_AverageAnnualReturnYear05

7.22%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

4.09%

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 26, 2008

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

2.07%

5 Years

rr_AverageAnnualReturnYear05

5.77%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

2.82%

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

3.01%

5 Years

rr_AverageAnnualReturnYear05

5.23%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

2.78%

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Dividend and Interest Expenses on Securities Sold Short

rr_Component1OtherExpensesOverAssets

0.56%

Acquired Fund Fees and Expenses (Underlying Funds)

rr_AcquiredFundFeesAndExpensesOverAssets

34.00%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

2.15%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.49%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.66%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

169

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

626

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,109

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,444

1 Year

rr_AverageAnnualReturnYear01

4.10%

5 Years

rr_AverageAnnualReturnYear05

6.90%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

3.84%

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 31, 2008

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Dividend and Interest Expenses on Securities Sold Short

rr_Component1OtherExpensesOverAssets

0.15%

^[2]

Acquired Fund Fees and Expenses (Underlying Funds)

rr_AcquiredFundFeesAndExpensesOverAssets

34.00%

^[2]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.49%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.18%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.31%

^[1]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

Based on estimated amounts for the current fiscal year, using amounts for Institutional Shares from the last fiscal year.

Acquired Fund Fees and Expenses, Based on Estimates [Text]

rr_AcquiredFundFeesAndExpensesBasedOnEstimates

Based on estimated amounts for the current fiscal year, using amounts for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

133

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

453

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

796

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,764

1 Year

rr_AverageAnnualReturnYear01

4.40%

5 Years

rr_AverageAnnualReturnYear05

7.22%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

4.09%

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.02%, 1.32% and .97% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, dividend and interest expenses on securities sold short, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

[2] Based on estimated amounts for the current fiscal year, using amounts for Institutional Shares from the last fiscal year.

XML

Lazard Enhanced Opportunities Portfolio

Lazard Enhanced Opportunities Portfolio

Investment Objective

The Portfolio seeks current income and long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard Enhanced Opportunities Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard Enhanced Opportunities Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		1.40%	1.40%	1.40%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses	[1]	0.28%	0.28%	0.28%
Total Annual Portfolio Operating Expenses		1.68%	1.93%	1.68%
Fee Waiver and Expense Reimbursement	[2]			0.03%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	1.68%	1.93%	1.65%

Example

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard Enhanced Opportunities Portfolio (USD $)	1 Year	3 Years
Institutional Shares	171	530
Open Shares	196	606
R6 Shares	168	525

Portfolio Turnover

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. Because the Portfolio commenced investment operations on December 31, 2014, no portfolio turnover information is presented.

Principal Investment Strategies

The Portfolio seeks to achieve its investment objective over a full market cycle through a hedged strategy investing primarily in convertible fixed income and preferred securities (including those rated below investment grade (“junk”)). The strategy utilizes a relative value approach, focusing on convertible securities that are considered to have low volatility. It is expected that the Portfolio will invest primarily in small and mid cap companies. The Portfolio also will utilize selective strategy level and position level hedges, primarily through short selling and derivatives, seeking to minimize macro risk (equity and credit) and interest rate risk. The Portfolio may invest in convertible debt and preferred securities of any maturity and any quality. Convertible securities held in the Portfolio generally are expected to have maturities between three and seven years at the time of investment, or between five and seven years if invested at issuance. Preferred securities generally are of perpetual maturities, callable at various points determined by the issuer. The Portfolio management team utilizes bottom up fundamental credit, equity and quantitative analysis in conjunction with top down macroeconomic analysis to identify individual securities believed to offer compelling value versus comparable risk return.

The Portfolio will generally have short positions through selling securities “short” and through investments in derivative instruments, principally swap agreements on individual securities, and may use short positions to seek to increase returns or to reduce risk. A short sale involves the sale of a security that the Portfolio does not own in the expectation of purchasing the same security (or a security exchangeable therefor) at a later date and at a lower price and profiting from the price decline. Similarly, when taking short positions with respect to securities through investments in derivative instruments, the Investment Manager is expecting the value of such securities to fall during the period of the Portfolio’s investment exposure.

Although the Portfolio’s investment focus is US companies, the Portfolio also may invest in non-US companies, including depositary receipts and shares. At certain times, based on the currently existing market environment, the Investment Manager may not believe it is able to find sufficient opportunities to invest in convertible fixed income and preferred securities and/or take short positions and may determine to tactically shift the Portfolio to invest substantially in money market instruments, such as short-term US Treasury securities and certificates of deposit.

The Portfolio may invest in ETFs and similar products, which generally pursue a passive index-based strategy.

In addition, the Portfolio may, but is not required to, enter into futures and forward currency contracts and equity, interest rate, credit default and currency swap agreements; and write put and call options on securities (including ETFs), indexes and currencies, for hedging purposes or to seek to increase returns.

It is expected that the Portfolio will buy and sell securities, and take short positions in securities, frequently in connection with implementing its investment strategy.

The Portfolio is classified as “non-diversified” under the 1940 Act, 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.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Short Position Risk. Short positions may involve substantial risks. If a short position appreciates in value during the period of the Portfolio’s investment, there will be a loss to the Portfolio that could be substantial. Short positions involve more risk than long positions because the maximum sustainable loss on a security purchased is limited to the amount paid for the security plus the transaction costs. However, the Portfolio’s potential loss on a short position is unlimited because, theoretically, there is no limit to the potential price increase of a security.

Convertible Securities Risk. The market value of convertible securities may perform like that of non-convertible fixed income securities; that is, their prices move inversely with changes in interest rates (i.e., as interest rates go up, prices go down). In addition, convertible securities are subject to the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Since it derives a portion of its value from the common stock into which it may be converted, a convertible security also is subject to the same types of market and issuer risks that apply to the underlying common stock.

Fixed Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Some fixed income securities may give the issuer the option to call, or redeem, the securities before their maturity. If securities held by the Portfolio are called during a time of declining interest rates (which is typically the case when issuers exercise options to call outstanding securities), the Portfolio may have to reinvest the proceeds in an investment offering a lower yield (and the Portfolio may not fully benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

Adjustable rate securities provide the Portfolio with a certain degree of protection against rises in interest rates, although such securities will participate in any declines in interest rates as well. Certain adjustable rate securities, such as those with interest rates that fluctuate directly or indirectly based on multiples of a stated index, are designed to be highly sensitive to changes in interest rates and can subject the holders thereof to extreme reductions of yield and possibly loss of principal. Certain fixed income securities may be issued at a discount from their face value (such as zero coupon securities) or purchased at a price less than their stated face amount or at a price less than their issue price plus the portion of “original issue discount” previously accrued thereon, i.e., purchased at a “market discount.” The amount of original issue discount and/or market discount on certain obligations may be significant, and accretion of market discount together with original issue discount will cause the Portfolio to realize income prior to the receipt of cash payments with respect to these securities.

Preferred Securities Risk. There are various risks associated with investing in preferred securities. In addition, unlike common stock, participation in the growth of an issuer may be limited.

• Credit risk is the risk that a security held by the Portfolio will decline in price or the issuer of the security will fail to make dividend, interest or principal payments when due because the issuer experiences a decline in its financial status.

• Interest rate risk is the risk that securities will decline in value because of changes in market interest rates. When market interest rates rise, the market value of such securities generally will fall.

• Preferred securities may include provisions that permit the issuer, at its discretion, to defer or omit distributions for a stated period without any adverse consequences to the issuer.

• Preferred securities are generally subordinated to bonds and other debt instruments in an issuer’s capital structure in terms of having priority to corporate income, claims to corporate assets and liquidation payments, and therefore will be subject to greater credit risk than more senior debt instruments.

• During periods of declining interest rates, an issuer may be able to exercise an option to call, or redeem, its issue at par earlier than the scheduled maturity. If this occurs during a time of lower or declining interest rates, the Portfolio may have to reinvest the proceeds in lower yielding securities (and the Portfolio may not benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

Swap Agreements and Other Derivatives Risk. Swap agreements and other derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Over-the-counter swap agreements, forward currency contracts, over-the-counter options on securities (including options on ETFs), indexes and currencies and other over-the-counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. These derivatives transactions, as well as the exchange-traded futures and options in which the Portfolio may invest, are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related security, interest rate, index, commodity, currency or other reference asset. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions, even when entered into for hedging purposes, may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

Counterparty Credit Risk. The Portfolio’s investment strategy is dependent on counterparties to its securities borrowing transactions in connection with short sales of securities and counterparties to derivatives transactions. Transactions with such counterparties are subject to the risk of default by a counterparty, which could result in a loss of Portfolio assets used as collateral or the loss of monies owed to the Portfolio by a counterparty.

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.

Leverage Risk. The use of leverage, which the Portfolio’s strategy entails, may magnify the Portfolio’s gains or losses.

Value Investing Risk. The Portfolio invests in securities believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The securities in which the Portfolio invests may respond differently to market and other developments than other types of securities.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

Market Direction Risk. Since the Portfolio will typically hold both long and short positions, an investment in the Portfolio will involve market risks associated with different types of investment decisions than those made for a typical “long only” fund. The Portfolio’s results will suffer both when there is a general market advance and the Portfolio holds significant “short” positions, or when there is a general market decline and the Portfolio holds significant “long” positions. In recent years, the markets have shown considerable volatility from day to day and even in intra-day trading.

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.

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.

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 Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Non-Diversification Risk. The Portfolio’s NAV 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.

ETF Risk. Shares of ETFs may trade at prices that vary from their NAVs, sometimes significantly. The shares of ETFs may trade at prices at, below or above their most recent NAV. In addition, the performance of an ETF pursuing a passive index-based strategy may diverge from the performance of the index. The Portfolio’s investments in ETFs are subject to the risks of such ETF’s investments, as well as to the general risks of investing in ETFs. Portfolio shares will bear not only the Portfolio’s management fees and operating expenses, but also their proportional share of the management fees and operating expenses of the ETFs in which the Portfolio invests. The Portfolio may be limited by the 1940 Act in the amount of its assets that may be invested in ETFs unless an ETF has received an exemptive order from the SEC on which the Portfolio may rely or an exemption is available.

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.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in high transaction costs and an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

Performance Bar Chart and Table

Because the Portfolio did not have a full calendar year of performance 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. Updated performance information is available at www.LazardNet.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.

[1] "Other Expenses" are based on estimated amounts for the current fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through December 31, 2016 to the extent Total Annual Portfolio Operating Expenses exceed 1.70%, 1.95% and 1.65% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, dividend and interest expenses on securities sold short, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

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Lazard Emerging Markets Core Equity Portfolio

Lazard Emerging Markets Core Equity Portfolio

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard Emerging Markets Core Equity Portfolio	Institutional Shares	Open Shares	R6
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard Emerging Markets Core Equity Portfolio		Institutional Shares	Open Shares	R6
Management Fees		1.00%	1.00%	1.00%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		1.28%	1.56%	1.28%	[1]
Total Annual Portfolio Operating Expenses		2.28%	2.81%	2.28%
Fee Waiver and Expense Reimbursement	[2]	0.98%	1.21%	1.03%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	1.30%	1.60%	1.25%

Example

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard Emerging Markets Core Equity Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	132	618	1,131	2,539
Open Shares	163	757	1,377	3,050
R6	127	613	1,126	2,536

Portfolio Turnover

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 45% of the average value of its portfolio.

Principal Investment Strategies

In managing the Portfolio, the Investment Manager utilizes a flexible, core investment approach and engages in bottom-up, fundamental security analysis and selection. The Investment Manager may consider a security’s growth or value potential in managing the Portfolio. The Portfolio may invest in securities across the capitalization spectrum, although it typically invests in securities of companies with a market capitalization of $300 million or more.

The allocation of the Portfolio’s assets among countries and regions may vary from time to time based on the Investment Manager’s judgment and its analysis of market conditions. Emerging market countries include all countries not represented by the MSCI World Index. Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of companies that are economically tied to emerging market countries.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Small Cap Companies Risk. Small 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 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.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

Growth Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to have the potential for growth, but that may not realize such perceived potential for extended periods of time or may never realize such perceived growth potential. Such stocks may be more volatile than other stocks because they can be more sensitive to investor perceptions of the issuing company’s growth potential. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

Performance Bar Chart and Table Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Emerging Markets Core Equity Portfolio by showing the Portfolio’s performance for the first complete calendar year of operation compared to that of a broad measure of market performance. The bar chart shows the performance of the Portfolio’s Institutional Shares. Updated performance information is available at www.LazardNet.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.

Best Quarter:
6/30/14 7.59%

Worst Quarter:
9/30/14 -3.91%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

Average Annual Returns Lazard Emerging Markets Core Equity Portfolio	1 Year	Life of Portfolio	Inception Date
Institutional Shares	(1.25%)	(2.51%)	Oct. 31, 2013
Open Shares	(1.56%)	(2.77%)	Oct. 31, 2013
R6	(1.25%)	(2.51%)
After Taxes on Distributions Institutional Shares	(1.39%)	(2.63%)
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	(0.46%)	(1.85%)
MSCI Emerging Markets Index (reflects no deduction for fees, expenses or taxes)	(2.19%)	(4.31%)

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.30%, 1.60% and 1.25% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

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Lazard US Short Duration Fixed Income Portfolio

Lazard US Short Duration Fixed Income Portfolio

Investment Objective

The Portfolio seeks total return and preservation of capital.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard US Short Duration Fixed Income Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		0.25%	0.25%	0.25%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		0.27%	17.12%	0.27%	[1]
Total Annual Portfolio Operating Expenses		0.52%	17.62%	0.52%
Fee Waiver and Expense Reimbursement	[2]	0.12%	16.92%	0.17%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	0.40%	0.70%	0.35%

Example

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard US Short Duration Fixed Income Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	41	155	279	641
Open Shares	72	3,298	5,761	9,663
R6 Shares	36	150	274	636

Portfolio Turnover

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 46% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Portfolio invests at least 80% of its assets in fixed-income securities of US issuers, including US government securities, corporate securities, mortgage-related and asset-backed securities, convertible securities, municipal securities, structured products, preferred stocks and inflation-indexed-securities. These securities may have any type of interest rate payment terms, including fixed rate, adjustable rate or zero coupon features. Under normal circumstances, the Portfolio’s investment portfolio can be expected to have an average effective duration of three years or less. Duration is an estimate of the sensitivity of the price (the value of principal) of a fixed-income security to a change in interest rates. Generally, the longer the duration, the higher the expected volatility. For example, the market price of a fixed-income security with a duration of three years would be expected to decline 3% if interest rates rose 1%. Conversely, the market price of the same security would be expected to increase 3% if interest rates fell 1%.

The Portfolio invests primarily in securities that are rated investment grade by one or more nationally recognized statistical rating organizations (“NRSROs”) (or, if unrated, determined by the Investment Manager to be of comparable quality).

Securities are evaluated based on their fundamental and structural characteristics. Valuation analysis is tailored to the specific asset class, but may include credit research and analysis of features such as prepayment or call options, maturity, duration and coupon.

The Portfolio may invest up to 20% of its assets in other securities which need not be fixed-income securities of US issuers.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Adjustable rate securities provide the Portfolio with a certain degree of protection against rises in interest rates, although such securities will participate in any declines in interest rates as well. Certain adjustable rate securities, such as those with interest rates that fluctuate directly or indirectly based on multiples of a stated index, are designed to be highly sensitive to changes in interest rates and can subject the holders thereof to extreme reductions of yield and possibly loss of principal. Certain fixed-income securities may be issued at a discount from their face value (such as zero coupon securities) or purchased at a price less than their stated face amount or at a price less than their issue price plus the portion of “original issue discount” previously accrued thereon, i.e., purchased at a “market discount.” The amount of original issue discount and/or market discount on certain obligations may be significant, and accretion of market discount together with original issue discount will cause the Portfolio to realize income prior to the receipt of cash payments with respect to these securities.

Mortgage-Related and Asset-Backed Securities Risk. Mortgage-related securities are complex instruments, subject to both credit and prepayment risk, and may be more volatile and less liquid, and more difficult to price accurately, than more traditional debt securities. Mortgage- related securities generally are subject to credit risks associated with the performance of the underlying mortgage properties. Prepayment risk can lead to fluctuations in value of the mortgage-related security which may be pronounced. As with other interest-bearing securities, the prices of certain mortgage-related securities are inversely affected by changes in interest rates. However, although the value of a mortgage-related security may decline when interest rates rise, the converse is not necessarily true, since during periods of declining interest rates the mortgages underlying the security are more likely to be prepaid.

The risks of asset-backed securities are similar to those of mortgage-related securities. However, asset-backed securities present certain risks that are not presented by mortgage-related securities. Primarily, these securities may provide the Portfolio with a less effective security interest in the related collateral than do mortgage-related securities.

Structured Products Risk. Structured notes and other structured products are privately negotiated debt instruments where the principal and/or interest is determined by reference to a specified asset, market or rate, or the differential performance of two assets or markets. Structured products can have risks of both fixed-income securities and derivatives transactions. Derivatives transactions may reduce returns or increase volatility, perhaps substantially, and they are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related reference assets, markets or rates. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

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. In addition, investments denominated in currencies other than US dollars may experience 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.

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Short Duration Fixed Income Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. The bar chart shows how the performance of the Portfolio’s Institutional Shares has varied from year to year. Updated performance information is available at www.LazardNet.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.

Best Quarter:
6/30/12 1.22%

Worst Quarter:
6/30/13 -2.24%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

The Portfolio changed its investment strategy on June 28, 2013. Prior to that that date, the Portfolio invested in US municipal securities and the performance prior to June 28, 2013 reflects that investment strategy.

Average Annual Returns Lazard US Short Duration Fixed Income Portfolio	1 Year	Life of Portfolio	Inception Date
Institutional Shares	0.49%	1.56%	Feb. 28, 2011
Open Shares	0.38%	1.31%	Feb. 28, 2011
R6 Shares	0.49%	1.56%
After Taxes on Distributions Institutional Shares	0.28%	1.03%
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	0.28%	1.02%
Bank of America Merrill Lynch 1-3 Year US Treasury Index (reflects no deduction for fees, expenses or taxes)	0.62%	0.75%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed .40%, .70% and .35% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

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Lazard International Equity Select Portfolio

Lazard International Equity Select Portfolio

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard International Equity Select Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard International Equity Select Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees	[1]	0.75%	0.75%	0.75%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		1.25%	1.60%	1.25%	[2]
Total Annual Portfolio Operating Expenses		2.00%	2.60%	2.00%
Fee Waiver and Expense Reimbursement	[3]	0.95%	1.25%	1.00%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[3]	1.05%	1.35%	1.00%

Example

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard International Equity Select Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	107	355	623	1,389
Open Shares	137	449	783	1,727
R6 Shares	102	340	597	1,331

Portfolio Turnover

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 80% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in equity securities, including American Depositary Receipts (“ADRs”), Global Depositary Receipts (“GDRs”) and common stocks, of relatively large non-US companies with market capitalizations in the range of companies included in the MSCI EAFE Index (ranging from approximately $1.6 billion to $274.4 billion as of April 9, 2015) that the Investment Manager believes are undervalued based on their earnings, cash flow or asset values.

In choosing stocks for the Portfolio, the Investment Manager looks for established companies in economically developed countries, although the Portfolio may invest in securities of companies whose principal business activities are located in emerging market countries in an amount up to the current emerging markets component of the MSCI All Country World Index ex-US plus 15%. The allocation of the Portfolio’s assets to emerging market countries may vary from time to time.

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities.

Although the Portfolio is classified as “diversified” under the 1940 Act, it may invest in a smaller number of issuers than other, more diversified investment portfolios.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Focused Investing Risk. The Portfolio’s NAV 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.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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.

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard International Equity Select Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. 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.LazardNet.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.

Best Quarter:
6/30/09 18.73%

Worst Quarter:
9/30/11 -17.57%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

The MSCI EAFE/All Country World Index ex-US Linked Index shown in the table is an unmanaged index created by the Investment Manager, which links the performance of the MSCI EAFE Index for all periods through June 30, 2010 (when the Portfolio’s benchmark index changed) and the MSCI All Country World Index ex-US for all periods thereafter.

Average Annual Returns Lazard International Equity Select Portfolio	1 Year	5 Years	10 Years	Life of Portfolio	Inception Date
Institutional Shares	(4.29%)	6.15%	3.86%	4.14%	May 31, 2001
Open Shares	(4.76%)	5.79%	3.51%	3.83%	May 31, 2001
R6 Shares	(4.29%)	6.15%	3.86%	4.14%
After Taxes on Distributions Institutional Shares	(4.31%)	5.90%	3.17%	3.61%
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	(1.97%)	5.05%	3.57%	3.76%
MSCI All Country World Index ex-US (reflects no deduction for fees, expenses or taxes)	(3.87%)	4.43%	5.13%	5.72%
MSCI EAFE/All Country World Index ex-US Linked Index (reflects no deduction for fees, expenses or taxes)	(3.87%)	3.91%	3.73%	4.34%

[1] The Management Fee has been restated to reflect the current fee.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

[3] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016 to the extent Total Annual Portfolio Operating Expenses exceed 1.05%, 1.35% and 1.00% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, and from May 2, 2016 to May 1, 2025, to the extent Total Annual Portfolio Operating Expenses exceed 1.15%, 1.45% and 1.10% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively. All limitations on Total Annual Portfolio Operating Expenses are exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio. Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement have been restated to reflect the current fee waiver and expense limitation arrangement.

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Lazard Global Listed Infrastructure Portfolio

Lazard Global Listed Infrastructure Portfolio

Investment Objective

The Portfolio seeks total return.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard Global Listed Infrastructure Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard Global Listed Infrastructure Portfolio	Institutional Shares	Open Shares	R6 Shares
Management Fees	0.90%	0.90%	0.90%
Distribution and Service (12b-1) Fees	none	0.25%	none
Other Expenses	0.08%	0.14%	0.08%	[1]
Total Annual Portfolio Operating Expenses	0.98%	1.29%	0.98%

Example

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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard Global Listed Infrastructure Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	100	312	542	1,201
Open Shares	131	409	708	1,556
R6 Shares	100	312	542	1,201

Portfolio Turnover

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 41% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in equity securities, principally common stocks, of infrastructure companies and concentrates its investments in industries represented by infrastructure companies. The Investment Manager focuses on companies with a minimum market capitalization of $250 million that own physical infrastructure and which the Investment Manager believes are undervalued.

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of infrastructure companies, which consist of utilities, pipelines, toll roads, airports, railroads, ports, telecommunications and other infrastructure companies, with securities listed on a national or other recognized securities exchange.

Under normal market conditions, the Portfolio invests significantly (at least 40%—unless market conditions are not deemed favorable by the Investment Manager, in which case the Portfolio would invest at least 30%) in infrastructure companies organized or located outside the US or doing a substantial amount of business outside the US. The Investment Manager allocates the Portfolio’s assets among various regions and countries, including the United States (but in no less than three different countries). The Portfolio may invest in equity securities of companies with some business activities located in emerging market countries.

The Investment Manager generally seeks to substantially hedge foreign currency exposure in the Portfolio against movements relative to the US dollar by entering into foreign currency forward contracts, although the Portfolio’s total foreign currency exposure may not be fully hedged at all times.

Although the Portfolio is classified as “diversified” under the 1940 Act, it may invest in a smaller number of issuers than other, more diversified investment portfolios.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Infrastructure Companies Risk. Securities and instruments of infrastructure companies are more susceptible to adverse economic or regulatory occurrences affecting their industries. Infrastructure companies may be subject to a variety of factors that may adversely affect their business or operations, including high interest costs in connection with capital construction programs, high leverage, costs associated with environmental and other regulations, the effects of economic slowdown, surplus capacity, increased competition from other providers of services, uncertainties concerning the availability of fuel at reasonable prices, the effects of energy conservation policies and other factors. Infrastructure companies also may be affected by or subject to, among other factors, regulation by various government authorities, including rate regulation and service interruption due to environmental, operational or other mishaps.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

Foreign Currency and Foreign Currency Hedging Risk. 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 may not be able to accurately predict movements in exchange rates and there may be imperfect correlations between movements in exchange rates that could cause the Portfolio to incur significant losses. Currency investments could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies.

Forward Currency Contracts Risk. Forward currency contracts may reduce returns or increase volatility, perhaps substantially. Forward currency contracts are subject to the risk of default by the counterparty to the contracts and can be illiquid. These contracts are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related currency. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of forward currency contracts, even when entered into for hedging purposes, may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

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.

Focused Investing Risk. The Portfolio’s NAV 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.

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Global Listed Infrastructure 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. Updated performance information is available at www.LazardNet.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.

Best Quarter:
9/30/10 12.17%

Worst Quarter:
9/30/11 -9.85%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

Average Annual Returns Lazard Global Listed Infrastructure Portfolio	1 Year	5 Years	Life of Portfolio	Inception Date
Institutional Shares	17.95%	13.09%	13.08%	Dec. 31, 2009
Open Shares	17.61%	12.71%	12.70%	Dec. 31, 2009
R6 Shares	17.95%	13.09%	13.08%
After Taxes on Distributions Institutional Shares	13.85%	11.77%	11.76%
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	11.95%	10.47%	10.47%
UBS Global 50/50 Infrastructure & Utilities® Index (Hedged) (reflects no deduction for fees, expenses or taxes)	20.55%	10.91%	10.91%
MSCI World Index (reflects no deduction for fees, expenses or taxes)	4.94%	10.20%	10.20%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Lazard Global Strategic Equity Portfolio

Lazard Global Strategic Equity Portfolio

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard Global Strategic Equity Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard Global Strategic Equity Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		0.85%	0.85%	0.85%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses	[1]	0.29%	0.34%	0.29%
Total Annual Portfolio Operating Expenses		1.14%	1.44%	1.14%
Fee Waiver and Expense Reimbursement	[2]	0.04%	0.04%	0.09%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	1.10%	1.40%	1.05%

Example

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard Global Strategic Equity Portfolio (USD $)	1 Year	3 Years
Institutional Shares	112	357
Open Shares	143	451
R6 Shares	107	350

Portfolio Turnover

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. For the period from August 29, 2014 (commencement of operations) through December 31, 2014, the Portfolio’s portfolio turnover rate was 24% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in equity securities, principally common stocks, of companies that the Investment Manager believes are undervalued based on their earnings, cash flow or asset values. The Investment Manager seeks to realize the Portfolio’s investment objective primarily through stock selection, investing in companies believed to have sustainably high or improving returns and trading at attractive valuations. The Portfolio may invest in securities of companies whose principal business activities are located in emerging market countries, and the allocation of the Portfolio’s assets to emerging market countries may vary from time to time. The Portfolio may invest in securities of companies across the capitalization spectrum.

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities. In addition, under normal market conditions, the Portfolio invests significantly (at least 40%—unless market conditions are not deemed favorable by the Investment Manager, in which case the Portfolio would invest at least 30%) in non-US companies. The Investment Manager allocates the Portfolio’s assets among various regions and countries, including the United States (but in no less than three different countries). The allocation of the Portfolio’s assets among geographic sectors may shift from time to time based on the Investment Manager’s judgment and its analysis of market conditions.

Although the Portfolio is classified as “diversified” under the 1940 Act, it may invest in a smaller number of issuers than other, more diversified investment portfolios.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Focused Investing Risk. The Portfolio’s NAV 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.

Value Investing Risk. The Portfolio generally invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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.

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.

Performance Bar Chart and Table

Because the Portfolio did not have a full calendar year of performance 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. Updated performance information is available at www.LazardNet.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.

[1] "Other Expenses" are based on estimated amounts for the current fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through August 29, 2016 to the extent Total Annual Portfolio Operating Expenses exceed 1.10%, 1.40% and 1.05% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard International Small Cap Equity Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks long-term capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-05-01

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 48% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

48.00%

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

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 that the Investment Manager believes 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, below $5 billion or in the range of the smallest 10% of companies included in the MSCI EAFE Index (based on market capitalization of the Index as a whole, which ranged from approximately $1.6 billion to $274.4 billion as of April 9, 2015).

In choosing stocks for the Portfolio, the Investment Manager looks for smaller, well-managed non-US companies that the Investment Manager believes have the potential for growth. Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of small cap companies.

The Portfolio may invest up to 25% of its assets in securities of companies whose principal business activities are located in emerging market countries, although the allocation of the Portfolio’s assets to emerging market countries may vary from time to time.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Small Cap Companies Risk. Small 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 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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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 Year-by-Year Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard International Small Cap Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. 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.LazardNet.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.

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 International Small Cap Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:
6/30/09 31.53%

Worst Quarter:
12/31/08 -27.07%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

31.53%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(27.07%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

MSCI EAFE Small Cap Index (reflects no deduction for fees, expenses or taxes) (Institutional)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(4.95%)

5 Years

rr_AverageAnnualReturnYear05

8.63%

10 Years

rr_AverageAnnualReturnYear10

6.04%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

5.32%

MSCI EAFE Small Cap Index (reflects no deduction for fees, expenses or taxes) (Open)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(4.95%)

5 Years

rr_AverageAnnualReturnYear05

8.63%

10 Years

rr_AverageAnnualReturnYear10

6.04%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

5.63%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.40%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.15%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.02%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.13%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

115

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

363

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

631

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,396

Annual Return 2005

rr_AnnualReturn2005

14.77%

Annual Return 2006

rr_AnnualReturn2006

26.31%

Annual Return 2007

rr_AnnualReturn2007

(4.61%)

Annual Return 2008

rr_AnnualReturn2008

(49.84%)

Annual Return 2009

rr_AnnualReturn2009

39.17%

Annual Return 2010

rr_AnnualReturn2010

23.55%

Annual Return 2011

rr_AnnualReturn2011

(14.11%)

Annual Return 2012

rr_AnnualReturn2012

22.28%

Annual Return 2013

rr_AnnualReturn2013

30.20%

Annual Return 2014

rr_AnnualReturn2014

(2.77%)

1 Year

rr_AverageAnnualReturnYear01

(2.77%)

5 Years

rr_AverageAnnualReturnYear05

10.44%

10 Years

rr_AverageAnnualReturnYear10

4.72%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

7.14%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 01, 1993

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(3.27%)

5 Years

rr_AverageAnnualReturnYear05

10.21%

10 Years

rr_AverageAnnualReturnYear10

3.20%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

6.02%

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(1.05%)

5 Years

rr_AverageAnnualReturnYear05

8.47%

10 Years

rr_AverageAnnualReturnYear10

4.28%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

6.18%

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.44%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.44%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.01%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.43%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

146

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

455

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

786

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,723

1 Year

rr_AverageAnnualReturnYear01

(3.05%)

5 Years

rr_AverageAnnualReturnYear05

10.08%

10 Years

rr_AverageAnnualReturnYear10

4.41%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

6.71%

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 13, 1997

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.40%

^[2]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.15%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.07%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.08%

^[1]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

110

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

358

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

626

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,391

1 Year

rr_AverageAnnualReturnYear01

(2.77%)

5 Years

rr_AverageAnnualReturnYear05

10.44%

10 Years

rr_AverageAnnualReturnYear10

4.72%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

7.14%

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.13%, 1.43% and 1.08% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

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Lazard International Small Cap Equity Portfolio

Lazard International Small Cap Equity Portfolio

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard International Small Cap Equity Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard International Small Cap Equity Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		0.75%	0.75%	0.75%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		0.40%	0.44%	0.40%	[1]
Total Annual Portfolio Operating Expenses		1.15%	1.44%	1.15%
Fee Waiver and Expense Reimbursement	[2]	0.02%	0.01%	0.07%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	1.13%	1.43%	1.08%

Example

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard International Small Cap Equity Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	115	363	631	1,396
Open Shares	146	455	786	1,723
R6 Shares	110	358	626	1,391

Portfolio Turnover

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 48% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in equity securities, principally common stocks, of relatively small non-US companies that the Investment Manager believes 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, below $5 billion or in the range of the smallest 10% of companies included in the MSCI EAFE Index (based on market capitalization of the Index as a whole, which ranged from approximately $1.6 billion to $274.4 billion as of April 9, 2015).

In choosing stocks for the Portfolio, the Investment Manager looks for smaller, well-managed non-US companies that the Investment Manager believes have the potential for growth. Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of small cap companies.

The Portfolio may invest up to 25% of its assets in securities of companies whose principal business activities are located in emerging market countries, although the allocation of the Portfolio’s assets to emerging market countries may vary from time to time.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Small Cap Companies Risk. Small 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 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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard International Small Cap Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. 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.LazardNet.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.

Best Quarter:
6/30/09 31.53%

Worst Quarter:
12/31/08 -27.07%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

Average Annual Returns Lazard International Small Cap Equity Portfolio	1 Year	5 Years	10 Years	Life of Portfolio	Inception Date
Institutional Shares	(2.77%)	10.44%	4.72%	7.14%	Dec. 01, 1993
Open Shares	(3.05%)	10.08%	4.41%	6.71%	Feb. 13, 1997
R6 Shares	(2.77%)	10.44%	4.72%	7.14%
After Taxes on Distributions Institutional Shares	(3.27%)	10.21%	3.20%	6.02%
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	(1.05%)	8.47%	4.28%	6.18%
MSCI EAFE Small Cap Index (reflects no deduction for fees, expenses or taxes) (Institutional)	(4.95%)	8.63%	6.04%	5.32%
MSCI EAFE Small Cap Index (reflects no deduction for fees, expenses or taxes) (Open)	(4.95%)	8.63%	6.04%	5.63%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.13%, 1.43% and 1.08% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

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Lazard Global Realty Equity Portfolio

Lazard Global Realty Equity Portfolio

Investment Objectives

The Portfolio’s primary investment objective is long-term capital appreciation,

with current income, including interest and dividends from portfolio securities, as a secondary objective.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard Global Realty Equity Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard Global Realty Equity Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees	[1]	0.85%	0.85%	0.85%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		2.94%	3.16%	2.94%	[2]
Total Annual Portfolio Operating Expenses		3.79%	4.26%	3.79%
Fee Waiver and Expense Reimbursement	[3]	2.69%	2.86%	2.74%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[3]	1.10%	1.40%	1.05%

Example

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard Global Realty Equity Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	112	909	1,726	3,855
Open Shares	143	1,032	1,934	4,249
R6 Shares	107	905	1,721	3,852

Portfolio Turnover

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 84% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities (including common, convertible and preferred stocks) of Realty Companies (defined below), as well as certain synthetic instruments relating to Realty Companies. Such synthetic instruments are investments that have economic characteristics similar to the Portfolio’s direct investments in Realty Companies and may include depositary receipts, including ADRs, GDRs and European Depositary Receipts, warrants, rights, options and shares of ETFs. The Portfolio’s investments in non-US companies may include companies whose principal business activities are located in emerging market countries.

In addition, under normal market conditions the Portfolio invests significantly (at least 40%—unless market conditions are not deemed favorable by the Investment Manager, in which case the Portfolio would invest at least 30%) in non-US companies. The Investment Manager will allocate the Portfolio’s assets among various regions and countries, including the United States (but in no less than three different countries).

The Investment Manager conducts proprietary quantitative, qualitative and on-site real estate analysis to select the Portfolio’s investments, which may include, as appropriate, research at the macroeconomic, sector, company and property level. The Investment Manager’s individual company research may consider a number of quantitative measures, including earnings growth potential, price to earnings or free cash flow multiples, price to NAV ratios, dividend yield and potential for growth, return on equity and return on assets, as well as qualitative factors such as overall business and growth strategy and quality of management.

“Realty Companies” are real estate-related companies of any size including, but not limited to, REITs, real estate operating or service companies and companies in the homebuilding, lodging and hotel industries, as well as companies engaged in the natural resources and utility industries, and other companies whose investments, balance sheets or income statements are real estate-intensive (i.e., the company’s actual or anticipated revenues, profits, assets, services or products are related to real estate including, but not limited to, the ownership, renting, leasing, construction, management, development or financing of commercial, industrial or residential real estate).

The Portfolio may invest in issuers of any market capitalization and securities of any maturity, and the Portfolio’s investments also may include securities purchased in IPOs.

The Portfolio also may invest up to 20% of its assets in equity and fixed income securities and instruments of companies or entities (which need not be Realty Companies), including, but not limited to, other investment companies.

The Portfolio’s investments in preferred stock and convertible securities may include securities which, at the time of purchase, are rated below “investment grade” by an NRSRO, or the unrated equivalent as determined by the Investment Manager (“junk bonds”).

In addition to purchasing options, the Portfolio may, but is not required to, write put and covered call options on securities and indexes, for hedging purposes or to seek to increase returns.

The Portfolio is classified as “non-diversified” under the 1940 Act, 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.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Other Equity Securities Risk. Preferred stock is subject to credit and interest rate risk and the risk that the dividend on the stock may be changed or omitted by the issuer and, unlike common stock, participation in the growth of an issuer may be limited. The market value of a convertible security tends to perform like that of a regular debt security so that, if market interest rates rise, the value of the convertible security falls. Investments in warrants involve certain risks, including the possible lack of a liquid market for resale, price fluctuations and the failure of the price of the underlying security to reach a level at which the warrant can be prudently exercised, in which case the warrant may expire without being exercised and result in a loss of the Portfolio’s entire investment.

Realty Companies Risk. Since the Portfolio focuses its investments in Realty Companies, the Portfolio could lose money due to the performance of real estate-related securities even if securities markets generally are experiencing positive results. The performance of investments made by the Portfolio may be determined to a great extent by the current status of the real estate industry in general, or by other factors (such as interest rates and the availability of loan capital) that may affect the real estate industry, even if other industries would not be so affected. Consequently, the investment strategies of the Portfolio could lead to securities investment results that may be significantly different from investments in securities of other industries or sectors or in a more broad-based portfolio generally.

The risks related to investments in Realty Companies include, but are not limited to: adverse changes in general economic and local market conditions; adverse developments in employment; changes in supply or demand for similar or competing properties; unfavorable changes in applicable taxes, governmental regulations and interest rates; operating or development expenses; and lack of available financing.

Due to certain special considerations that apply to REITs, investments in REITs may carry additional risks not necessarily present in investments in other securities. REIT securities (including those trading on national exchanges) typically have trading volumes that are less than those of common stocks of non-Realty Companies traded on national exchanges, which may affect a Portfolio’s ability to trade or liquidate those securities. An investment in REITs may be adversely affected if the REIT fails to comply with applicable laws and regulations, including failing to qualify as a REIT under the Code. Failure to qualify with any of these requirements could jeopardize a company’s status as a REIT. The Portfolio generally will have no control over the operations and policies of a REIT, and the Portfolio generally will have no ability to cause a REIT to take the actions necessary to qualify as a REIT.

Small and Mid Cap Companies Risk. Many Realty Companies are small and mid cap companies, which 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 securities 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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Non-Diversification Risk. The Portfolio’s NAV 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.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Options Risk. Writing options on securities and indexes, including for hedging purposes, may reduce returns or increase volatility, perhaps substantially, and may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions. Writing options is subject to many of the risks of, and can be highly sensitive to changes in the value of, the related security or index. As such, a small commitment to written options could potentially have a relatively large impact on the Portfolio’s performance. Purchasing options will reduce returns by the amount of premiums paid for options that are not exercised. Over-the-counter options purchased on securities and indexes are subject to the risk of default by the counterparty and can be illiquid.

Investment Companies and ETF Risk. Any investments in other investment companies and ETFs are subject to the risks of the investments of the investment companies and ETFs, as well as to the general risks of investing in investment companies and ETFs. Portfolio shares will bear not only the Portfolio’s management fees and operating expenses, but also their proportional share of the management fees and operating expenses of the other investment companies and ETFs in which the Portfolio invests.

Performance Bar Chart and Table Year-by-Year Total Returns for Open Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Global Realty Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. The Portfolio commenced operations after all of the assets of an investment company advised by Alesco, Grubb & Ellis AGA International Realty Fund (the “Predecessor International Realty Fund”), were transferred to the Portfolio in exchange for Open Shares of the Portfolio in a tax- free reorganization on September 23, 2011. The bar chart shows how the performance of the Portfolio’s Open Shares (or the Predecessor International Realty Fund’s Class A shares, prior to September 23, 2011) has varied from year to year. Updated performance information is available at www.LazardNet.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.

Best Quarter:
6/30/09 31.31%

Worst Quarter:
9/30/11 -22.48%

Average Annual Total Returns (for the periods ended December 31, 2014)

After-tax returns are shown only for Open 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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

The FTSE EPRA/NAREIT Global ex-US/FTSE EPRA/NAREIT Global Linked Index shown in the table is an unmanaged index created by the Investment Manager, which links the performance of the FTSE EPRA/NAREIT Global ex-US Index for all periods through August 15, 2013 (when the Portfolio’s investment strategy changed from investing primarily in non-US Realty Companies to a global approach) and the FTSE EPRA/NAREIT Global Index for all periods thereafter.

Average Annual Returns Lazard Global Realty Equity Portfolio	1 Year	5 Years	Life of Portfolio	Inception Date
Open Shares	10.05%	7.31%	17.93%	Dec. 31, 2008
Institutional Shares	10.35%		15.86%	Sep. 26, 2011
R6 Shares	10.35%		15.86%
After Taxes on Distributions Open Shares	5.25%	4.51%	14.64%
After Taxes on Distributions and Sale of Portfolio Shares Open Shares	6.21%	4.76%	13.57%
FTSE EPRA/NAREIT Global Index (reflects no reduction for fees, expenses or taxes) (Open)	13.91%	10.20%	14.71%
FTSE EPRA/NAREIT Global Index (reflects no reduction for fees, expenses or taxes) (Institutional)	13.91%	10.20%	15.12%
FTSE EPRA/NAREIT Global ex-US/FTSE/NAREIT Global Linked Index (reflects no deduction for fees, expenses or taxes) (Open)	13.92%	8.83%	14.66%
FTSE EPRA/NAREIT Global ex-US/FTSE/NAREIT Global Linked Index (reflects no deduction for fees, expenses or taxes)(Institutional)	13.92%	8.83%	15.91%

[1] The Management Fee has been restated to reflect the current fee.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

[3] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.10%, 1.40% and 1.05% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio. Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement have been restated to reflect the current fee waiver and expense limitation arrangement.

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Lazard US Strategic Equity Portfolio

Lazard US Strategic Equity Portfolio

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard US Strategic Equity Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard US Strategic Equity Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		0.70%	0.70%	0.70%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		0.20%	0.36%	0.36%
Total Annual Portfolio Operating Expenses		0.90%	1.31%	1.06%
Fee Waiver and Expense Reimbursement	[1]	0.15%	0.26%	0.36%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[1]	0.75%	1.05%	0.70%

Example

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard US Strategic Equity Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	77	272	484	1,094
Open Shares	107	390	693	1,556
R6 Shares	72	301	550	1,262

Portfolio Turnover

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.

Principal Investment Strategies

The Portfolio invests primarily in equity securities, principally common stocks, of US companies that the Investment Manager believes have strong and/or improving financial productivity and are undervalued based on their earnings, cash flow or asset values. Although the Portfolio generally focuses on large cap companies, the market capitalizations of issuers in which the Portfolio invests may vary with market conditions and the Portfolio also may invest in mid cap and small cap companies.

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.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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.

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.

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. 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.

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Strategic Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. 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.LazardNet.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.

Best Quarter:
6/30/09 16.46%

Worst Quarter:
12/31/08 -23.06%

Average Annual Total Returns (for the periods ended December 31, 2014)

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.

Average Annual Returns Lazard US Strategic Equity Portfolio	1 Year	5 Years	10 Years	Life of Portfolio	Inception Date
Institutional Shares	15.04%	14.24%	7.13%	7.13%	Dec. 30, 2004
Open Shares	14.77%	13.91%	6.82%	6.82%	Dec. 30, 2004
R6 Shares				12.23%	May 19, 2014
After Taxes on Distributions Institutional Shares	11.02%	13.08%	6.08%	6.08%
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	5.64%	11.30%	11.38%	5.64%
S&P 500 Index (reflects no deduction for fees, expenses or taxes) (Institutional)	13.68%	15.45%	7.67%	7.65%
S&P 500 Index (reflects no deduction for fees, expenses or taxes) (Open)	13.68%	15.45%	7.67%	7.65%
S&P 500 Index (reflects no deduction for fees, expenses or taxes) (R6)	13.68%	15.45%	7.67%	10.94%

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed .75%, 1.05% and .70% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

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Lazard Global Dynamic Multi Asset Portfolio

Lazard Global Dynamic Multi Asset Portfolio

Investment Objective

The Portfolio seeks total return.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard Global Dynamic Multi Asset Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard Global Dynamic Multi Asset Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		0.85%	0.85%	0.85%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses	[1]	0.30%	0.35%	0.30%
Total Annual Portfolio Operating Expenses		1.15%	1.45%	1.15%
Fee Waiver and Expense Reimbursement	[2]	0.25%	0.25%	0.30%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	0.90%	1.20%	0.85%

Example

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard Global Dynamic Multi Asset Portfolio (USD $)	1 Year	3 Years
Institutional Shares	92	341
Open Shares	122	434
R6 Shares	87	336

Portfolio Turnover

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. Because the Portfolio had not commenced investment operations prior to the date of this Prospectus, no portfolio turnover information is presented.

Principal Investment Strategies

The Investment Manager allocates the Portfolio’s assets among various US and non-US equity and fixed-income strategies managed by the Investment Manager in proportions consistent with the Investment Manager’s evaluation of various economic and other factors designed to estimate probabilities, including volatility. The Investment Manager makes allocation decisions among the strategies based on quantitative and qualitative analysis using a number of different tools, including proprietary software models and input from the Investment Manager’s research analysts. At any given time the Portfolio’s assets may not be allocated to all strategies.

A principal component of the Investment Manager’s investment process for the Portfolio is volatility management. The Investment Manager generally will seek to achieve, over a full market cycle, a level of volatility in the Portfolio’s performance of approximately 10%. Volatility, a risk measurement, measures the magnitude of up and down fluctuations in the value of a financial instrument or index over time.

As a consequence of allocating its assets among various of the Investment Manager’s investment strategies, the Portfolio may:

• invest in US and non-US equity and debt securities (including those of companies with business activities located in emerging market countries and securities issued by governments of such countries), depositary receipts and shares, currencies and related instruments, and structured notes

• invest in ETFs and similar products, which generally pursue a passive index-based strategy

• invest in securities of companies of any size or market capitalization

• invest in debt securities of any maturity or duration

• invest in securities of any particular quality or investment grade and, as a result, the Portfolio may invest significantly in securities rated below investment grade (e.g., lower than Baa by Moody’s or lower than BBB by S&P) (“junk bonds”) or securities that are unrated

• enter into swap agreements (including credit default swap agreements) and forward contracts, and may purchase and write put and covered call options, on securities, indexes and currencies, for hedging purposes (although it is not required to do so) or to seek to increase returns

Under normal market conditions, the Portfolio invests significantly (at least 40%—unless market conditions are not deemed favorable by the Investment Manager, in which case the Portfolio would invest at least 30%) in issuers organized or located outside the US or doing a substantial amount of business outside the US, securities denominated in a foreign currency or foreign currency forward contracts.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Allocation Risk. The Portfolio’s ability to achieve its investment objective depends in part on the Investment Manager’s skill in determining the Portfolio’s allocation among investment strategies. The Investment Manager’s evaluations and assumptions underlying its allocation decisions may differ from actual market conditions.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Volatility Management Risk. While the Investment Manager generally will seek to achieve, over a full market cycle, the level of volatility in the Portfolio’s performance as described above, there can be no guarantee that this will be achieved; actual or realized volatility for any particular period may be materially higher or lower depending on market conditions. In addition, the Investment Manager’s efforts to manage the Portfolio’s volatility can be expected, in a period of generally positive equity market returns, to reduce the Portfolio’s performance below what could be achieved without seeking to manage volatility and, thus, the Portfolio would generally be expected to underperform market indices that do not seek to achieve a specified level of volatility.

Value Investing and Growth Investing Risks. The Portfolio may invest a portion of its assets in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The Portfolio also may invest a portion of its assets in stocks believed by the Investment Manager to have the potential for growth, but that may not realize such perceived potential for extended periods of time or may never realize such perceived growth potential. Such stocks may be more volatile than other stocks because they can be more sensitive to investor perceptions of the issuing company’s growth potential. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

Quantitative Model Risk. The success of the Portfolio depends upon effectiveness of the Investment Manager’s quantitative model. A quantitative model, such as the risk and other models used by the Investment Manager requires adherence to a systematic, disciplined process. The Investment Manager’s ability to monitor and, if necessary, adjust its quantitative model could be adversely affected by various factors, including incorrect or outdated market and other data inputs. Factors that affect a security’s value can change over time, and these changes may not be reflected in the quantitative model. In addition, the factors used in quantitative analysis and the weight placed on those factors may not be predictive of a security’s value.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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. Currency investments could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Some debt securities may give the issuer the option to call, or redeem, the securities before their maturity, and, during a time of declining interest rates, the Portfolio may have to reinvest the proceeds in an investment offering a lower yield (and the Portfolio may not fully benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

Structured notes are privately negotiated debt instruments where the principal and/or interest is determined by reference to a specified asset, market or rate, or the differential performance of two assets or markets. Structured notes can have risks of both debt securities and derivative transactions.

ETF Risk. Any investments in ETFs are subject to the risks of the investments of the ETFs, as well as to the general risks of investing in ETFs. Portfolio shares will bear not only the Portfolio’s management fees and operating expenses, but also their proportional share of the management fees and operating expenses of any ETFs in which the Portfolio invests. Shares of ETFs in which the Portfolio invests may trade at prices that vary from their NAVs, sometimes significantly. The shares of ETFs may trade at prices at, below or above their most recent NAV.

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.

Liquidity Risk. The lack of a readily available market may limit the ability of the Portfolio to sell certain securities at the time and price it would like. The size of certain securities offerings of emerging markets issuers may be relatively smaller in size than offerings in more developed markets and, in some cases, the Portfolio, by itself or together with other Portfolios or other accounts managed by the Investment Manager, may hold a position in a security that is large relative to the typical trading volume for that security; these factors can make it difficult for the Portfolio to dispose of the position at the desired time or price.

Forward Currency Contracts and Other Derivatives Risk. Forward currency contracts and other derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Swap agreements, forward currency contracts, over-the-counter options on securities, indexes and currencies, structured notes and other over-the-counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. These derivatives transactions, as well as the exchange-traded options in which the Portfolio may invest, are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related security, index or currency. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions, even if entered into for hedging purposes, may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

Performance Bar Chart and Table

Because the Portfolio has 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 that of a broad measure of market performance. After the Portfolio commences investment operations, performance information will be available at www.LazardNet.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.

[1] "Other Expenses" are based on estimated amounts for the current fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed .90%, 1.20% and .85% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard US Small-Mid Cap Equity Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks long-term capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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 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 91% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

91.00%

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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Portfolio invests primarily in equity securities, principally common stocks, of small to mid cap US companies. The Investment Manager considers “small-mid cap companies” to be those companies that, at the time of initial purchase by the Portfolio, have market capitalizations within the range of companies included in the Russell 2500^® Index (ranging from approximately $4.4 million to $19.6 billion as of April 9, 2015).

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of small-mid cap US companies. The Investment Manager focuses on relative value in seeking to construct a diversified portfolio of investments for the Portfolio that maintains sector and industry balance, using investment opportunities identified through bottom-up fundamental research conducted by the Investment Manager’s small cap, mid cap and global research analysts.

The Portfolio may invest up to 20% of its assets in the securities of larger or smaller US or non-US companies.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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. 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.

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 Year-by-Year Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Small-Mid Cap Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. 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.LazardNet.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.

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 Small-Mid Cap Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The Russell 2000/2500 Linked Index shown in the table is an unmanaged index created by the Investment Manager, which links the performance of the Russell 2000® Index for all periods through August 24, 2008 (when the Portfolio’s investment focus was changed from small cap companies to small-mid cap companies) and the Russell 2500 Index for all periods thereafter.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:
6/30/09 28.30%

Worst Quarter:
9/30/11 -26.02%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

28.30%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(26.02%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

The Russell 2000/2500 Linked Index shown in the table is an unmanaged index created by the Investment Manager, which links the performance of the Russell 2000® Index for all periods through August 24, 2008 (when the Portfolio’s investment focus was changed from small cap companies to small-mid cap companies) and the Russell 2500 Index for all periods thereafter.

Russell 2500 Index (reflects no deduction for fees, expenses or taxes) (Institutional)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

7.07%

5 Years

rr_AverageAnnualReturnYear05

16.36%

10 Years

rr_AverageAnnualReturnYear10

8.72%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

11.27%

Russell 2500 Index (reflects no deduction for fees, expenses or taxes) (Open)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

7.07%

5 Years

rr_AverageAnnualReturnYear05

16.36%

10 Years

rr_AverageAnnualReturnYear10

8.72%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

9.63%

Russell 2000/2500 Linked Index (reflects no deduction for fees, expenses or taxes) (Institutional)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

7.07%

5 Years

rr_AverageAnnualReturnYear05

16.36%

10 Years

rr_AverageAnnualReturnYear10

8.46%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

10.27%

Russell 2000/2500 Linked Index (reflects no deduction for fees, expenses or taxes) (Open)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

7.07%

5 Years

rr_AverageAnnualReturnYear05

16.36%

10 Years

rr_AverageAnnualReturnYear10

8.46%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

8.61%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.11%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

0.86%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

88

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

274

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

477

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,061

Annual Return 2005

rr_AnnualReturn2005

4.31%

Annual Return 2006

rr_AnnualReturn2006

17.11%

Annual Return 2007

rr_AnnualReturn2007

(6.38%)

Annual Return 2008

rr_AnnualReturn2008

(34.46%)

Annual Return 2009

rr_AnnualReturn2009

55.47%

Annual Return 2010

rr_AnnualReturn2010

23.67%

Annual Return 2011

rr_AnnualReturn2011

(9.83%)

Annual Return 2012

rr_AnnualReturn2012

15.45%

Annual Return 2013

rr_AnnualReturn2013

35.81%

Annual Return 2014

rr_AnnualReturn2014

11.39%

1 Year

rr_AverageAnnualReturnYear01

11.39%

5 Years

rr_AverageAnnualReturnYear05

14.26%

10 Years

rr_AverageAnnualReturnYear10

8.54%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

11.37%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 30, 1991

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

4.34%

5 Years

rr_AverageAnnualReturnYear05

11.30%

10 Years

rr_AverageAnnualReturnYear10

5.85%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

8.83%

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

9.72%

5 Years

rr_AverageAnnualReturnYear05

10.71%

10 Years

rr_AverageAnnualReturnYear10

6.24%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

8.84%

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.20%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.20%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

122

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

381

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

660

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,455

1 Year

rr_AverageAnnualReturnYear01

11.01%

5 Years

rr_AverageAnnualReturnYear05

13.91%

10 Years

rr_AverageAnnualReturnYear10

8.20%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

8.54%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 30, 1997

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.11%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

0.86%

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

88

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

274

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

477

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,061

1 Year

rr_AverageAnnualReturnYear01

11.39%

5 Years

rr_AverageAnnualReturnYear05

14.26%

10 Years

rr_AverageAnnualReturnYear10

8.54%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

11.37%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard Developing Markets Equity Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks long-term capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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 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 57% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

57.00%

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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Portfolio invests primarily in equity securities, principally common stocks, of non-US companies whose principal activities are located in emerging market countries (also known as “developing markets”).

Emerging market countries include all countries represented by the MSCI Emerging Markets Index, which currently includes: Brazil, Chile, China, Colombia, Czech Republic, Egypt, Greece, Hungary, India, Indonesia, Korea, Malaysia, Mexico, Peru, Philippines, Poland, Qatar, Russia, South Africa, Taiwan, Thailand, Turkey and United Arab Emirates.

The Investment Manager employs a relative growth investment philosophy that is based on value creation through the process of bottom-up stock selection. The Investment Manager’s approach consists of an analytical framework, accounting validation, fundamental analysis and portfolio construction parameters. The Investment Manager’s selection process focuses on growth and considers the sustainability of growth and the trade off between valuation and growth.

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of companies whose principal business activities are located in emerging market countries.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Growth Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to have the potential for growth, but that may not realize such perceived potential for extended periods of time or may never realize such perceived growth potential. Such stocks may be more volatile than other stocks because they can be more sensitive to investor perceptions of the issuing company’s growth potential. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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 Year-by-Year Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Developing Markets Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. The bar chart shows how the performance of the Portfolio’s Institutional Shares varied from year to year. Updated performance information is available at www.LazardNet.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.

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 Developing Markets Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:
6/30/09 56.64%

Worst Quarter:
9/30/11 -28.53%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

56.64%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(28.53%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

MSCI Emerging Markets Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(2.19%)

5 Years

rr_AverageAnnualReturnYear05

1.78%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

5.67%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.19%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.19%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

121

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

378

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

654

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,443

Annual Return 2009

rr_AnnualReturn2009

108.53%

Annual Return 2010

rr_AnnualReturn2010

28.62%

Annual Return 2011

rr_AnnualReturn2011

(26.15%)

Annual Return 2012

rr_AnnualReturn2012

17.16%

Annual Return 2013

rr_AnnualReturn2013

(3.90%)

Annual Return 2014

rr_AnnualReturn2014

(10.27%)

1 Year

rr_AverageAnnualReturnYear01

(10.27%)

5 Years

rr_AverageAnnualReturnYear05

(0.82%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

4.41%

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 30, 2008

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(10.46%)

5 Years

rr_AverageAnnualReturnYear05

(1.78%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

3.43%

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(5.39%)

5 Years

rr_AverageAnnualReturnYear05

(0.59%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

3.44%

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.24%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.49%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

152

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

471

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

813

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,779

1 Year

rr_AverageAnnualReturnYear01

(10.57%)

5 Years

rr_AverageAnnualReturnYear05

(1.13%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

4.11%

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 30, 2008

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.19%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.19%

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

121

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

378

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

654

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,443

1 Year

rr_AverageAnnualReturnYear01

(10.27%)

5 Years

rr_AverageAnnualReturnYear05

(0.82%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

4.41%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Lazard US Small Cap Equity Growth Portfolio

Lazard US Small Cap Equity Growth Portfolio

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard US Small Cap Equity Growth Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard US Small Cap Equity Growth Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		0.90%	0.90%	0.90%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses	[1]	0.17%	0.22%	0.17%
Total Annual Portfolio Operating Expenses		1.07%	1.37%	1.07%
Fee Waiver and Expense Reimbursement	[2]			0.02%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	1.07%	1.37%	1.05%

Example

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard US Small Cap Equity Growth Portfolio (USD $)	1 Year	3 Years
Institutional Shares	109	340
Open Shares	139	434
R6 Shares	107	337

Portfolio Turnover

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. Because the Portfolio commenced investment operations on December 31, 2014, no portfolio turnover information is presented.

Principal Investment Strategies

The Portfolio invests primarily in equity securities, principally common stocks, of small cap US companies believed to have the potential for significant earnings growth. The Investment Manager considers “small cap companies” to be those companies that, at the time of initial purchase by the Portfolio, have market capitalizations within the range of companies included in the Russell 2000 Growth Index (ranging from approximately $35.9 million to $10.8 billion as of April 9, 2015).

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of small cap US companies.

The Portfolio may invest up to 20% of its assets in securities of larger US or non-US companies.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Growth Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to have the potential for growth, but that may not realize such perceived potential for extended periods of time or may never realize such perceived growth potential. Such stocks may be more volatile than other stocks because they can be more sensitive to investor perceptions of the issuing company’s growth potential. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

Small Cap Companies Risk. Small 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 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.

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. 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.

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.

Performance Bar Chart and Table

Because the Portfolio did not have a full calendar year of performance 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. Updated performance information is available at www.LazardNet.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.

[1] "Other Expenses" are based on estimated amounts for the current fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through December 31, 2016 to the extent Total Annual Portfolio Operating Expenses exceed 1.10%, 1.40% and 1.05% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

XML

Label

Element

Value

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.

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 and hold shares of the Portfolio, a series of The Lazard Funds, Inc. (the “Fund”).

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-05-01

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 63% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

63.00%

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

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 (the “1940 Act”), 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.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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. 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 (“NAV”) 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.

Risk Lose Money [Text]

rr_RiskLoseMoney

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Risk Nondiversified Status [Text]

rr_RiskNondiversifiedStatus

The Portfolio’s net asset value (“NAV”) 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.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

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 (prior to the change in investment strategy described above) 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. Updated performance information is available at www.LazardNet.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.

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 (prior to the change in investment strategy described above) compared to that of broad measures of market performance.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

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.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:
6/30/09 19.10%

Worst Quarter:
12/31/08 -21.54%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

19.10%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(21.54%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

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.

S&P 500 Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.68%

5 Years

rr_AverageAnnualReturnYear05

15.45%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

8.00%

Russell 1000 Value/S&P 500 Linked Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.69%

5 Years

rr_AverageAnnualReturnYear05

14.73%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

6.92%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.70%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.11%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

0.81%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.81%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

83

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

259

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

450

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,002

Annual Return 2006

rr_AnnualReturn2006

25.23%

Annual Return 2007

rr_AnnualReturn2007

1.65%

Annual Return 2008

rr_AnnualReturn2008

(36.18%)

Annual Return 2009

rr_AnnualReturn2009

24.81%

Annual Return 2010

rr_AnnualReturn2010

12.00%

Annual Return 2011

rr_AnnualReturn2011

(1.47%)

Annual Return 2012

rr_AnnualReturn2012

16.83%

Annual Return 2013

rr_AnnualReturn2013

29.59%

Annual Return 2014

rr_AnnualReturn2014

18.88%

1 Year

rr_AverageAnnualReturnYear01

18.88%

5 Years

rr_AverageAnnualReturnYear05

14.71%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

7.91%

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 30, 2005

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

14.99%

5 Years

rr_AverageAnnualReturnYear05

12.99%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

6.54%

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

12.15%

5 Years

rr_AverageAnnualReturnYear05

11.25%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

5.91%

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.70%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.51%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.46%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.21%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.25%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

127

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

441

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

777

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,728

1 Year

rr_AverageAnnualReturnYear01

18.28%

5 Years

rr_AverageAnnualReturnYear05

14.32%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

7.59%

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 30, 2005

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.70%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.11%

^[2]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

0.81%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.81%

^[1]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

83

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

259

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

450

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,002

1 Year

rr_AverageAnnualReturnYear01

18.88%

5 Years

rr_AverageAnnualReturnYear05

14.71%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

7.91%

[1] Reflects a contractual agreement by Lazard Asset Management LLC (the "Investment Manager") to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016 to the extent Total Annual Portfolio Operating Expenses exceed .95%, 1.25% and .90% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, and from May 2, 2016 through May 1, 2025, to the extent Total Annual Portfolio Operating Expenses exceed 1.10%, 1.40% and 1.05% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively. All limitations on Total Annual Portfolio Operating Expenses are exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Fund's Board of Directors (the "Board"), and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard Emerging Markets Multi Asset Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks total return from current income and capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2025-05-01

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 122% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

122.00%

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Investment Manager allocates the Portfolio’s assets among various emerging markets equity, debt and currency investment strategies managed by the Investment Manager in proportions consistent with the Investment Manager’s evaluation of various economic and other factors through quantitative and qualitative analysis. These proportions are changed from time to time without notice to shareholders, and at any given time the allocation to one strategy (other than currency investments) may comprise a substantial percentage of the Portfolio’s assets or, conversely, there may be no allocation to such strategy. The Investment Manager will make allocation decisions among the strategies based on quantitative and qualitative analysis using a number of different tools, including proprietary software models. Quantitative analysis includes statistical analysis of portfolio risks, factor dependencies and trading tendencies. Qualitative analysis includes analysis of the global economic environment as well as internal and external research on individual securities, portfolio holdings, attribution factors, behavioral patterns and overall market views and scenarios.

The Portfolio may invest in:

• equity securities, including common stocks and depositary receipts and shares

• debt securities issued or guaranteed by governments, government agencies or supranational bodies or companies or other private-sector entities, including fixed and/or floating rate investment grade and non-investment grade bonds (“junk bonds”), convertible securities, commercial paper, collateralized debt obligations (“CDOs”), short- and medium-term obligations and other fixed-income obligations

• emerging markets currencies and related instruments (primarily forward currency contracts) and structured notes

The securities in which the Portfolio invests may be denominated in the US dollar, the Canadian dollar, the Euro, the Japanese yen, the Pound Sterling, or the local currency of the issuer. Under normal circumstances, the Portfolio invests at least 80% of its assets in securities and other investments that are economically tied to emerging market countries. Emerging market countries include all countries not represented by the MSCI World Index. The allocation of the Portfolio’s assets among countries and regions may vary from time to time based on the Investment Manager’s judgment and its analysis of market conditions.

The Portfolio may invest without limitation in securities rated below investment grade (e.g., lower than Baa by Moody’s Investors Service, Inc. (“Moody’s”) or lower than BBB by Standard & Poor’s Ratings Group (“S&P”)) (“junk bonds”) or securities that are unrated. Additionally, the Portfolio is not restricted to investments in debt securities of any particular maturity or duration. Duration is an estimate of the sensitivity of the price (the value of principal) of a fixed-income security to a change in interest rates. Generally, the longer the duration, the higher the expected volatility. For example, the market price of a fixed-income security with a duration of three years would be expected to decline 3% if interest rates rose 1%. Conversely, the market price of the same security would be expected to increase 3% if interest rates fell 1%.

The Portfolio’s currency strategy uses forward currency contracts, options on currencies and structured notes, although the Portfolio may not allocate assets to the currency strategy at all times, and there may be no allocation to currency investments for significant periods of time. The Portfolio also may, but is not required to, enter into forward foreign currency contracts, purchase options on currencies and enter into currency swaps to hedge the foreign currency exposure associated with equity or debt investment strategies. The Portfolio also may enter into credit default swaps and other types of swaps, for hedging purposes or to seek to increase returns.

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.

Allocation Risk. The Portfolio’s ability to achieve its investment objective depends in part on the Investment Manager’s skill in determining the Portfolio’s allocation among the investment strategies. The Investment Manager’s evaluations and assumptions underlying its allocation decisions may differ from actual market conditions.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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. Currency investments could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies.

Value Investing and Growth Investing Risks. The Portfolio may invest a portion of its assets in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The Portfolio also may invest a portion of its assets in stocks believed by the Investment Manager to have the potential for growth, but that may not realize such perceived potential for extended periods of time or may never realize such perceived growth potential. Such stocks may be more volatile than other stocks because they can be more sensitive to investor perceptions of the issuing company’s growth potential. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

Quantitative Model Risk. The success of the Portfolio depends upon effectiveness of the Investment Manager’s quantitative model. A quantitative model, such as the risk and other models used by the Investment Manager requires adherence to a systematic, disciplined process. The Investment Manager’s ability to monitor and, if necessary, adjust its quantitative model could be adversely affected by various factors, including incorrect or outdated market and other data inputs. Factors that affect a security’s value can change over time, and these changes may not be reflected in the quantitative model. In addition, the factors used in quantitative analysis and the weight placed on those factors may not be predictive of a security’s value.

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.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Some debt securities may give the issuer the option to call, or redeem, the securities before their maturity, and, during a time of declining interest rates, the Portfolio may have to reinvest the proceeds in an investment offering a lower yield (and the Portfolio may not benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

Structured notes are privately negotiated debt instruments where the principal and/or interest is determined by reference to a specified asset, market or rate, or the differential performance of two assets or markets. Structured notes can have risks of both debt securities and derivatives transactions.

Liquidity Risk. The lack of a readily available market may limit the ability of the Portfolio to sell certain securities at the time and price it would like. The size of certain securities offerings of emerging markets issuers may be relatively smaller in size than offerings in more developed markets and, in some cases, the Portfolio, by itself or together with other Portfolios or other accounts managed by the Investment Manager, may hold a position in a security that is large relative to the typical trading volume for that security; these factors can make it difficult for the Portfolio to dispose of the position at the desired time or price.

Forward Currency Contracts and Other Derivatives Risk. Forward currency contracts and other derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Forward currency contracts, over-the-counter options on currencies, structured notes, swap agreements and other over-the-counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. These derivatives transactions, as well as the exchange-traded options in which the Portfolio may invest, are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related currency, security or other reference asset. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions, even if entered into for hedging purposes, may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in high transaction costs and an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

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 Year-by-Year Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Emerging Markets Multi Asset Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. The bar chart shows how the performance of the Portfolio’s Institutional Shares has varied from year to year. Updated performance information is available at www.LazardNet.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.

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 Emerging Markets Multi Asset Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:
3/31/12 12.14%

Worst Quarter:
6/30/13 -7.19%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

12.14%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2013

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(7.19%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

MSCI Emerging Markets Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(2.19%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(2.76%)

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.28%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.28%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.28%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

130

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

406

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

702

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,545

Annual Return 2012

rr_AnnualReturn2012

14.02%

Annual Return 2013

rr_AnnualReturn2013

(2.41%)

Annual Return 2014

rr_AnnualReturn2014

(5.57%)

1 Year

rr_AverageAnnualReturnYear01

(5.57%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(2.60%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 31, 2011

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(6.01%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(2.89%)

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(2.78%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(1.92%)

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.98%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

2.23%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.63%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.60%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

163

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

505

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

871

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,900

1 Year

rr_AverageAnnualReturnYear01

(5.89%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(2.91%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 31, 2011

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.28%

^[2]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.28%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.03%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.25%

^[1]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

127

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

397

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

686

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,511

1 Year

rr_AverageAnnualReturnYear01

(5.57%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(2.60%)

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2025, to the extent Total Annual Portfolio Operating Expenses exceed 1.30%, 1.60% and 1.25% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard International Equity Concentrated Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks long-term capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-08-29

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. For the period from August 29, 2014 (commencement of operations) through December 31, 2014, the Portfolio’s portfolio turnover rate was 45% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

45.00%

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year.

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Portfolio invests primarily in equity securities, principally common stocks, of non-US companies. The Portfolio has a concentrated portfolio of investments, typically investing in 20 to 30 securities of non-US companies, including those whose principal business activities are located in emerging market countries. The Investment Manager seeks to realize the Portfolio’s investment objective primarily through stock selection, investing in companies believed to have sustainably high or improving returns and trading at attractive valuations. In choosing stocks for the Portfolio, the Investment Manager generally looks for established companies in economically developed countries that the Investment Manager believes are undervalued based on their earnings, cash flow or asset values. The Investment Manager also may invest the Portfolio’s assets in securities of companies domiciled in emerging market countries in an amount up to the current percentage of securities in the MSCI All Country World Index ex-US issued by companies domiciled in emerging market countries (22.0% as of April 9, 2015) plus 15%. The Portfolio may invest in securities of companies across the capitalization spectrum.

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities.

The Portfolio is classified as “non-diversified” under the 1940 Act, 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.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Value Investing Risk. The Portfolio generally invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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-Diversification Risk. The Portfolio’s NAV 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.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in high transaction costs and an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

Risk Lose Money [Text]

rr_RiskLoseMoney

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Risk Nondiversified Status [Text]

rr_RiskNondiversifiedStatus

The Portfolio’s NAV 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.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Bar Chart and Table

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

Because the Portfolio did not have a full calendar year of performance as of 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. Updated performance information is available at www.LazardNet.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.

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 did not have a full calendar year of performance as of 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.LazardNet.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.

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.90%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.33%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.23%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.18%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.05%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

107

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

366

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.90%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.38%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.53%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.18%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.35%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

137

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

460

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.90%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.33%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.23%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.23%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.00%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

102

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

359

[1] "Other Expenses" are based on estimated amounts for the current fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through August 29, 2016 to the extent Total Annual Portfolio Operating Expenses exceed 1.05%, 1.35% and 1.00% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio. Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement have been restated to reflect the current fee waiver and expense limitation arrangement.

XML

Lazard US Equity Concentrated Portfolio

Lazard US Equity Concentrated Portfolio

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio, a series of The Lazard Funds, Inc. (the “Fund”).

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard US Equity Concentrated Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard US Equity Concentrated Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		0.70%	0.70%	0.70%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		0.11%	0.51%	0.11%	[1]
Total Annual Portfolio Operating Expenses		0.81%	1.46%	0.81%
Fee Waiver and Expense Reimbursement	[2]		0.21%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	0.81%	1.25%	0.81%

Example

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard US Equity Concentrated Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	83	259	450	1,002
Open Shares	127	441	777	1,728
R6 Shares	83	259	450	1,002

Portfolio Turnover

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 63% of the average value of its portfolio.

Principal Investment Strategies

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 (the “1940 Act”), 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.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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. 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 (“NAV”) 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.

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

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 (prior to the change in investment strategy described above) 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. Updated performance information is available at www.LazardNet.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.

Best Quarter:
6/30/09 19.10%

Worst Quarter:
12/31/08 -21.54%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

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.

Average Annual Returns Lazard US Equity Concentrated Portfolio	1 Year	5 Years	Life of Portfolio	Inception Date
Institutional Shares	18.88%	14.71%	7.91%	Sep. 30, 2005
Open Shares	18.28%	14.32%	7.59%	Sep. 30, 2005
R6 Shares	18.88%	14.71%	7.91%
After Taxes on Distributions Institutional Shares	14.99%	12.99%	6.54%
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	12.15%	11.25%	5.91%
S&P 500 Index (reflects no deduction for fees, expenses or taxes)	13.68%	15.45%	8.00%
Russell 1000 Value/S&P 500 Linked Index (reflects no deduction for fees, expenses or taxes)	13.69%	14.73%	6.92%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional 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 through May 1, 2016 to the extent Total Annual Portfolio Operating Expenses exceed .95%, 1.25% and .90% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, and from May 2, 2016 through May 1, 2025, to the extent Total Annual Portfolio Operating Expenses exceed 1.10%, 1.40% and 1.05% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively. All limitations on Total Annual Portfolio Operating Expenses are exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Fund's Board of Directors (the "Board"), and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

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Lazard Developing Markets Equity Portfolio

Lazard Developing Markets Equity Portfolio

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard Developing Markets Equity Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard Developing Markets Equity Portfolio	Institutional Shares	Open Shares	R6 Shares
Management Fees	1.00%	1.00%	1.00%
Distribution and Service (12b-1) Fees	none	0.25%	none
Other Expenses	0.19%	0.24%	0.19%	[1]
Total Annual Portfolio Operating Expenses	1.19%	1.49%	1.19%

Example

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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard Developing Markets Equity Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	121	378	654	1,443
Open Shares	152	471	813	1,779
R6 Shares	121	378	654	1,443

Portfolio Turnover

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 57% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in equity securities, principally common stocks, of non-US companies whose principal activities are located in emerging market countries (also known as “developing markets”).

Emerging market countries include all countries represented by the MSCI Emerging Markets Index, which currently includes: Brazil, Chile, China, Colombia, Czech Republic, Egypt, Greece, Hungary, India, Indonesia, Korea, Malaysia, Mexico, Peru, Philippines, Poland, Qatar, Russia, South Africa, Taiwan, Thailand, Turkey and United Arab Emirates.

The Investment Manager employs a relative growth investment philosophy that is based on value creation through the process of bottom-up stock selection. The Investment Manager’s approach consists of an analytical framework, accounting validation, fundamental analysis and portfolio construction parameters. The Investment Manager’s selection process focuses on growth and considers the sustainability of growth and the trade off between valuation and growth.

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of companies whose principal business activities are located in emerging market countries.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Growth Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to have the potential for growth, but that may not realize such perceived potential for extended periods of time or may never realize such perceived growth potential. Such stocks may be more volatile than other stocks because they can be more sensitive to investor perceptions of the issuing company’s growth potential. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Developing Markets Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. The bar chart shows how the performance of the Portfolio’s Institutional Shares varied from year to year. Updated performance information is available at www.LazardNet.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.

Best Quarter:
6/30/09 56.64%

Worst Quarter:
9/30/11 -28.53%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

Average Annual Returns Lazard Developing Markets Equity Portfolio	1 Year	5 Years	Life of Portfolio	Inception Date
Institutional Shares	(10.27%)	(0.82%)	4.41%	Sep. 30, 2008
Open Shares	(10.57%)	(1.13%)	4.11%	Sep. 30, 2008
R6 Shares	(10.27%)	(0.82%)	4.41%
After Taxes on Distributions Institutional Shares	(10.46%)	(1.78%)	3.43%
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	(5.39%)	(0.59%)	3.44%
MSCI Emerging Markets Index (reflects no deduction for fees, expenses or taxes)	(2.19%)	1.78%	5.67%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

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Label

Element

Value

Risk/Return:

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Risk/Return [Heading]

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Lazard US Realty Income Portfolio

Objective [Heading]

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Investment Objectives

Objective, Primary [Text Block]

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The Portfolio’s primary investment objective is current income,

Objective, Secondary [Text Block]

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with long-term capital appreciation as a secondary objective.

Expense [Heading]

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Fees and Expenses

Expense Narrative [Text Block]

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This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

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Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

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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

2016-05-01

Portfolio Turnover [Heading]

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Portfolio Turnover

Portfolio Turnover [Text Block]

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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 53% of the average value of its portfolio.

Portfolio Turnover, Rate

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53.00%

Expense Example [Heading]

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Example

Expense Example Narrative [Text Block]

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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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

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Under normal circumstances, the Portfolio invests at least 80% of its assets in dividend-paying common and preferred stocks, convertible securities and fixed income securities of US Realty Companies (defined below), as well as certain synthetic instruments related to US Realty Companies. Such synthetic instruments are investments that have economic characteristics similar to the Portfolio’s direct investments in US Realty Companies and may include warrants, rights, options and shares of exchange-traded funds (“ETFs”).

The Investment Manager focuses on investments having the potential to deliver regular income and to offer the opportunity for long-term growth and capital appreciation. The Investment Manager conducts proprietary quantitative, qualitative and on-site real estate analysis to select the Portfolio’s investments, which may include, as appropriate, research at the macroeconomic, sector, company and property level. The Investment Manager’s individual company research may consider a number of quantitative measures, including earnings growth potential, price to earnings or free cash flow multiples, price to NAV ratios, dividend yield and potential for growth, return on equity and return on assets, as well as qualitative factors such as overall business and growth strategy and quality of management.

“Realty Companies” are real estate-related companies of any size including, but not limited to, real estate investment trusts (“REITs”), real estate operating or service companies and companies in the homebuilding, lodging and hotel industries, as well as companies engaged in the natural resources and utility industries, and other companies whose investments, balance sheets or income statements are real estate-intensive (i.e., the company’s actual or anticipated revenues, profits, assets, services or products are related to real estate including, but not limited to, the ownership, renting, leasing, construction, management, development or financing of commercial, industrial or residential real estate).

The Portfolio’s investments in preferred stock and convertible and fixed income securities may include securities which, at the time of purchase, are rated below “investment grade” by an NRSRO, or the unrated equivalent as determined by the Investment Manager (“junk bonds”).

The Portfolio may invest in issuers of any market capitalization and securities of any maturity, and the Portfolio’s investments also may include securities purchased in initial public offerings (“IPOs”).

The Portfolio also may invest up to 25% of its net assets in companies organized as master limited partnerships (“MLPs”) and their affiliates.

The Portfolio also may invest up to 20% of its assets in other securities and instruments of companies or entities (which need not be US Realty Companies), including, but not limited to, securities of non-US companies and other investment companies.

In addition to purchasing options, the Portfolio may, but is not required to, write put and covered call options on securities and indexes, for hedging purposes or to seek to increase returns.

Although the Portfolio is classified as “diversified” under the 1940 Act, it may invest in a smaller number of issuers than other, more diversified, investment portfolios.

Risk [Heading]

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Principal Investment Risks

Risk Narrative [Text Block]

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The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Realty Companies Risk. Since the Portfolio focuses its investments in Realty Companies, the Portfolio could lose money due to the performance of real estate-related securities even if securities markets generally are experiencing positive results. The performance of investments made by the Portfolio may be determined to a great extent by the current status of the real estate industry in general, or by other factors (such as interest rates and the availability of loan capital) that may affect the real estate industry, even if other industries would not be so affected. Consequently, the investment strategies of the Portfolio could lead to securities investment results that may be significantly different from investments in securities of other industries or sectors or in a more broad-based portfolio generally.

The risks related to investments in Realty Companies include, but are not limited to: adverse changes in general economic and local market conditions; adverse developments in employment; changes in supply or demand for similar or competing properties; unfavorable changes in applicable taxes, governmental regulations and interest rates; operating or development expenses; and lack of available financing. Due to certain special considerations that apply to REITs, investments in REITs may carry additional risks not necessarily present in investments in other securities. REIT securities (including those trading on national exchanges) typically have trading volumes that are less than those of common stocks of non-Realty Companies traded on national exchanges, which may affect a Portfolio’s ability to trade or liquidate those securities. An investment in REITs may be adversely affected if the REIT fails to comply with applicable laws and regulations, including failing to qualify as a REIT under the Internal Revenue Code of 1986, as amended (the “Code”). Failure to qualify with any of these requirements could jeopardize a company’s status as a REIT. The Portfolio generally will have no control over the operations and policies of a REIT, and the Portfolio generally will have no ability to cause a REIT to take the actions necessary to qualify as a REIT.

Small and Mid Cap Companies Risk. Many Realty Companies are small and mid cap companies, which 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 securities 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.

Preferred Securities Risk. There are various risks associated with investing in preferred securities. In addition, unlike common stock, participation in the growth of an issuer may be limited.

• Credit risk is the risk that a security held by the Portfolio will decline in price or the issuer of the security will fail to make dividend, interest or principal payments when due because the issuer experiences a decline in its financial status.

• Interest rate risk is the risk that securities will decline in value because of changes in market interest rates. When market interest rates rise, the market value of such securities generally will fall.

• Preferred securities may include provisions that permit the issuer, at its discretion, to defer or omit distributions for a stated period without any adverse consequences to the issuer.

• Preferred securities are generally subordinated to bonds and other debt instruments in an issuer’s capital structure in terms of having priority to corporate income, claims to corporate assets and liquidation payments, and therefore will be subject to greater credit risk than more senior debt instruments.

• During periods of declining interest rates, an issuer may be able to exercise an option to call, or redeem its issue at par earlier than the scheduled maturity. If this occurs during a time of lower or declining interest rates, the Portfolio may have to reinvest the proceeds in lower yielding securities (and the Portfolio may not benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

• Certain preferred securities may be substantially less liquid than many other securities, such as common stocks or US Government securities. Illiquid securities involve the risk that the securities will not be able to be sold at the time desired by the Portfolio or at prices approximating the value at which the Portfolio is carrying the securities on its books.

Other Equity Securities Risks. The market value of a convertible security tends to perform like that of a regular debt security so that, if market interest rates rise, the value of the convertible security falls. Investments in rights and warrants involve certain risks, including the possible lack of a liquid market for resale, price fluctuations and the failure of the price of the underlying security to reach a level at which the right or warrant can be prudently exercised, in which case the right or warrant may expire without being exercised and result in a loss of the Portfolio’s entire investment.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities “junk bond”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non- investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

MLP Risk. An investment in MLP units involves some risks that differ from an investment in the common stock of a corporation. Investing in MLPs involves certain risks related to investing in the underlying assets of the MLPs and risks associated with pooled investment vehicles. MLPs holding credit-related investments are subject to interest rate risk and the risk of default on payment obligations by debt issuers.

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. 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.

Focused Investing Risk. The Portfolio’s NAV 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.

Options Risk. Writing options on securities and indexes, including for hedging purposes, may reduce returns or increase volatility, perhaps substantially, and may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions. Writing options is subject to many of the risks of, and can be highly sensitive to changes in the value of, the related security or index. As such, a small commitment to written options could potentially have a relatively large impact on the Portfolio’s performance. Purchasing options will reduce returns by the amount of premiums paid for options that are not exercised. Over-the-counter options purchased on securities and indexes are subject to the risk of default by the counterparty and can be illiquid.

Investment Companies and ETF Risk. Any investments in other investment companies and ETFs are subject to the risks of the investments of the investment companies and ETFs, as well as to the general risks of investing in investment companies and ETFs. Portfolio shares will bear not only the Portfolio’s management fees and operating expenses, but also their proportional share of the management fees and operating expenses of any other investment companies and ETFs in which the Portfolio invests.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in high transaction costs and an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

Risk Lose Money [Text]

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The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Bar Chart and Performance Table [Heading]

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Performance Bar Chart and Table Year-by-Year Total Returns for Open Shares As of 12/31

Performance Narrative [Text Block]

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The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Realty Income 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 Portfolio commenced operations after all of the assets of an investment company advised by Grubb & Ellis Alesco Global Advisors, LLC (“Alesco”), Grubb & Ellis AGA Realty Income Fund (the “Predecessor Realty Income Fund”), were transferred to the Portfolio in exchange for Open Shares of the Portfolio in a tax-free reorganization on September 23, 2011. The bar chart shows how the performance of the Portfolio’s Open Shares (or the Predecessor Realty Income Fund’s Class A shares, prior to September 23, 2011) has varied from year to year. Updated performance information is available at www.LazardNet.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.

Performance Information Illustrates Variability of Returns [Text]

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The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Realty Income 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 Additional Market Index [Text]

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The 50% FTSE NAREIT All Equity REITs® Index/50% Wells Fargo Hybrid and Preferred Securities REIT® Index shown in the table is an unmanaged index created by the Investment Manager, and is a 50/50 blend of the FTSE NAREIT All Equity REITs Index and the Wells Fargo Hybrid and Preferred Securities REIT Index.

Performance Availability Phone [Text]

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(800) 823-6300

Performance Availability Website Address [Text]

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www.LazardNet.com

Performance Past Does Not Indicate Future [Text]

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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 Closing [Text Block]

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Best Quarter:
6/30/09 40.10%

Worst Quarter:
3/31/09 -13.67%

Highest Quarterly Return, Label

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Best Quarter:

Highest Quarterly Return, Date

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Jun. 30, 2009

Highest Quarterly Return

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40.10%

Lowest Quarterly Return, Label

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Worst Quarter:

Lowest Quarterly Return, Date

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Mar. 31, 2009

Lowest Quarterly Return

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(13.67%)

Performance Table Heading

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Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

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(reflects no deduction for fees, expenses or taxes)

Performance Table Uses Highest Federal Rate

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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

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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]

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After-tax returns are shown only for Open Shares. After-tax returns of the Portfolio’s other share classes will vary.

Performance Table Narrative

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After-tax returns are shown only for Open 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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

The 50% FTSE NAREIT All Equity REITs® Index/50% Wells Fargo Hybrid and Preferred Securities REIT® Index shown in the table is an unmanaged index created by the Investment Manager, and is a 50/50 blend of the FTSE NAREIT All Equity REITs Index and the Wells Fargo Hybrid and Preferred Securities REIT Index.

FTSE NAREIT All Equity REITs Index (reflects no deduction for fees, expenses or taxes) (Open)

Risk/Return:

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1 Year

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28.03%

5 Years

rr_AverageAnnualReturnYear05

16.91%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

8.82%

FTSE NAREIT All Equity REITs Index (reflects no deduction for fees, expenses or taxes) (Institutional)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

28.03%

5 Years

rr_AverageAnnualReturnYear05

16.91%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

19.46%

Wells Fargo Hybrid and Preferred Securities REIT Index (reflects no deduction for fees, expenses or taxes) (Open)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

20.37%

5 Years

rr_AverageAnnualReturnYear05

11.32%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

12.84%

Wells Fargo Hybrid and Preferred Securities REIT Index (reflects no deduction for fees, expenses or taxes) (Institutional)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

20.37%

5 Years

rr_AverageAnnualReturnYear05

11.32%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

8.83%

50% FTSE NAREIT All Equity REITs Index/50% Wells Fargo Hybrid and Preferred Securities REIT Index (reflects no deduction for fees, expenses or taxes) (Open)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

24.31%

5 Years

rr_AverageAnnualReturnYear05

14.36%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

11.44%

50% FTSE NAREIT All Equity REITs Index/50% Wells Fargo Hybrid and Preferred Securities REIT Index (reflects no deduction for fees, expenses or taxes) (Institutional)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

24.31%

5 Years

rr_AverageAnnualReturnYear05

14.36%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

14.27%

S&P 500 Index (reflects no deductions for fees, expenses or taxes) (Open)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.68%

5 Years

rr_AverageAnnualReturnYear05

15.45%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

10.02%

S&P 500 Index (reflects no deductions for fees, expenses or taxes) (Institutional)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.68%

5 Years

rr_AverageAnnualReturnYear05

15.45%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

22.56%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.21%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

0.96%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.96%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

98

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

306

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

531

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,178

1 Year

rr_AverageAnnualReturnYear01

21.54%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

17.29%

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 26, 2011

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.24%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.24%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.24%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

126

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

393

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

681

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,500

Annual Return 2009

rr_AnnualReturn2009

71.58%

Annual Return 2010

rr_AnnualReturn2010

33.15%

Annual Return 2011

rr_AnnualReturn2011

(0.16%)

Annual Return 2012

rr_AnnualReturn2012

23.00%

Annual Return 2013

rr_AnnualReturn2013

1.99%

Annual Return 2014

rr_AnnualReturn2014

21.35%

1 Year

rr_AverageAnnualReturnYear01

21.35%

5 Years

rr_AverageAnnualReturnYear05

15.14%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

13.10%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 30, 2008

Open Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

17.99%

5 Years

rr_AverageAnnualReturnYear05

9.92%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

8.51%

Open Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

12.30%

5 Years

rr_AverageAnnualReturnYear05

10.24%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

8.77%

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.21%

^[2]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

0.96%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.01%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.95%

^[1]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

97

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

305

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

530

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,177

1 Year

rr_AverageAnnualReturnYear01

21.54%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

17.29%

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.00%, 1.30% and .95% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard Global Listed Infrastructure Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks total return.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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 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 41% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

41.00%

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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Portfolio invests primarily in equity securities, principally common stocks, of infrastructure companies and concentrates its investments in industries represented by infrastructure companies. The Investment Manager focuses on companies with a minimum market capitalization of $250 million that own physical infrastructure and which the Investment Manager believes are undervalued.

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of infrastructure companies, which consist of utilities, pipelines, toll roads, airports, railroads, ports, telecommunications and other infrastructure companies, with securities listed on a national or other recognized securities exchange.

Under normal market conditions, the Portfolio invests significantly (at least 40%—unless market conditions are not deemed favorable by the Investment Manager, in which case the Portfolio would invest at least 30%) in infrastructure companies organized or located outside the US or doing a substantial amount of business outside the US. The Investment Manager allocates the Portfolio’s assets among various regions and countries, including the United States (but in no less than three different countries). The Portfolio may invest in equity securities of companies with some business activities located in emerging market countries.

The Investment Manager generally seeks to substantially hedge foreign currency exposure in the Portfolio against movements relative to the US dollar by entering into foreign currency forward contracts, although the Portfolio’s total foreign currency exposure may not be fully hedged at all times.

Although the Portfolio is classified as “diversified” under the 1940 Act, it may invest in a smaller number of issuers than other, more diversified investment portfolios.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Infrastructure Companies Risk. Securities and instruments of infrastructure companies are more susceptible to adverse economic or regulatory occurrences affecting their industries. Infrastructure companies may be subject to a variety of factors that may adversely affect their business or operations, including high interest costs in connection with capital construction programs, high leverage, costs associated with environmental and other regulations, the effects of economic slowdown, surplus capacity, increased competition from other providers of services, uncertainties concerning the availability of fuel at reasonable prices, the effects of energy conservation policies and other factors. Infrastructure companies also may be affected by or subject to, among other factors, regulation by various government authorities, including rate regulation and service interruption due to environmental, operational or other mishaps.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

Foreign Currency and Foreign Currency Hedging Risk. 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 may not be able to accurately predict movements in exchange rates and there may be imperfect correlations between movements in exchange rates that could cause the Portfolio to incur significant losses. Currency investments could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies.

Forward Currency Contracts Risk. Forward currency contracts may reduce returns or increase volatility, perhaps substantially. Forward currency contracts are subject to the risk of default by the counterparty to the contracts and can be illiquid. These contracts are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related currency. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of forward currency contracts, even when entered into for hedging purposes, may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

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.

Focused Investing Risk. The Portfolio’s NAV 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.

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 Year-by-Year Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Global Listed Infrastructure 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. Updated performance information is available at www.LazardNet.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.

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 Global Listed Infrastructure 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.LazardNet.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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:
9/30/10 12.17%

Worst Quarter:
9/30/11 -9.85%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2010

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

12.17%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(9.85%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

UBS Global 50/50 Infrastructure & Utilities® Index (Hedged) (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

20.55%

5 Years

rr_AverageAnnualReturnYear05

10.91%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

10.91%

MSCI World Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

4.94%

5 Years

rr_AverageAnnualReturnYear05

10.20%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

10.20%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.90%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.08%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

0.98%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

100

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

312

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

542

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,201

Annual Return 2010

rr_AnnualReturn2010

6.63%

Annual Return 2011

rr_AnnualReturn2011

(1.55%)

Annual Return 2012

rr_AnnualReturn2012

18.05%

Annual Return 2013

rr_AnnualReturn2013

26.56%

Annual Return 2014

rr_AnnualReturn2014

17.95%

1 Year

rr_AverageAnnualReturnYear01

17.95%

5 Years

rr_AverageAnnualReturnYear05

13.09%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

13.08%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2009

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.85%

5 Years

rr_AverageAnnualReturnYear05

11.77%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

11.76%

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

11.95%

5 Years

rr_AverageAnnualReturnYear05

10.47%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

10.47%

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.90%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.14%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.29%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

131

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

409

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

708

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,556

1 Year

rr_AverageAnnualReturnYear01

17.61%

5 Years

rr_AverageAnnualReturnYear05

12.71%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

12.70%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2009

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.90%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.08%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

0.98%

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

100

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

312

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

542

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,201

1 Year

rr_AverageAnnualReturnYear01

17.95%

5 Years

rr_AverageAnnualReturnYear05

13.09%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

13.08%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard US Corporate Income Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks maximum total return from a combination of capital appreciation and current income.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-05-01

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 28% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

28.00%

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, the Portfolio invests at least 80% of its assets in fixed-income securities issued by corporations or other non-governmental issuers similar to corporations, which securities are tied economically to the US. The Portfolio typically invests a substantial portion of its assets, and may invest up to 100% of its assets, in securities rated, at the time of purchase, below investment grade by S&P or Moody’s and as low as C or Ca by S&P or Moody’s, respectively, or the unrated equivalent as determined by the Investment Manager (“junk bonds”); however, the Portfolio focuses such investments in below investment grade securities that may be considered “better quality” (i.e., rated B1 or higher by Moody’s, B+ or higher by S&P or the unrated equivalent as determined by the Investment Manager). The Portfolio may invest in dollar-denominated securities of non-US companies, including, to a limited extent, in emerging market companies.

Although the Portfolio may invest in fixed-income securities without regard to their maturity, the Portfolio’s average weighted maturity is expected to range between two and ten years.

Securities are evaluated based on their fundamental and structural characteristics. Valuation analysis is tailored to the specific asset class, but may include credit research, prepayment or call options, maturity, duration, coupon, currency and country risks. The Portfolio is constructed using a bottom-up discipline in which the Investment Manager follows a systematic process to seek out undervalued opportunities within each sector.

The Portfolio may invest up to 20% of its assets in other securities which need not be fixed-income securities as described above and need not be tied economically to the US.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

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. 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.

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 Year-by-Year Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Corporate Income Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. 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.LazardNet.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.

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 Corporate Income Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:
6/30/09 13.08%

Worst Quarter:
12/31/08 -15.96%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.08%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(15.96%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

Bank of America Merrill Lynch BB-B US Cash Pay Non-Distressed High Yield Index (reflects no deduction for fees, expenses or taxes) (Institutional)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

3.69%

5 Years

rr_AverageAnnualReturnYear05

8.68%

10 Years

rr_AverageAnnualReturnYear10

6.54%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

6.61%

Bank of America Merrill Lynch BB-B US Cash Pay Non-Distressed High Yield Index (reflects no deduction for fees, expenses or taxes) (Open)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

3.69%

5 Years

rr_AverageAnnualReturnYear05

8.68%

10 Years

rr_AverageAnnualReturnYear10

6.54%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

6.59%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.55%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.16%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

0.71%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.16%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.55%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

56

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

211

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

379

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

867

Annual Return 2005

rr_AnnualReturn2005

4.33%

Annual Return 2006

rr_AnnualReturn2006

9.71%

Annual Return 2007

rr_AnnualReturn2007

3.63%

Annual Return 2008

rr_AnnualReturn2008

(20.24%)

Annual Return 2009

rr_AnnualReturn2009

34.66%

Annual Return 2010

rr_AnnualReturn2010

11.78%

Annual Return 2011

rr_AnnualReturn2011

5.17%

Annual Return 2012

rr_AnnualReturn2012

12.02%

Annual Return 2013

rr_AnnualReturn2013

6.17%

Annual Return 2014

rr_AnnualReturn2014

3.31%

1 Year

rr_AverageAnnualReturnYear01

3.31%

5 Years

rr_AverageAnnualReturnYear05

7.63%

10 Years

rr_AverageAnnualReturnYear10

6.29%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

4.32%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 02, 1998

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

0.98%

5 Years

rr_AverageAnnualReturnYear05

5.02%

10 Years

rr_AverageAnnualReturnYear10

3.56%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

1.11%

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

1.87%

5 Years

rr_AverageAnnualReturnYear05

4.85%

10 Years

rr_AverageAnnualReturnYear10

3.74%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

1.79%

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.55%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.75%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.55%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.70%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.85%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

87

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

421

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

778

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,786

1 Year

rr_AverageAnnualReturnYear01

3.01%

5 Years

rr_AverageAnnualReturnYear05

7.27%

10 Years

rr_AverageAnnualReturnYear10

6.00%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

3.76%

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 24, 1998

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.55%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.16%

^[2]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

0.71%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.21%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.50%

^[1]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

51

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

206

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

374

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

863

1 Year

rr_AverageAnnualReturnYear01

3.31%

5 Years

rr_AverageAnnualReturnYear05

7.63%

10 Years

rr_AverageAnnualReturnYear10

6.29%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

4.32%

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed .55%, .85% and .50% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

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Lazard International Equity Portfolio

Lazard International Equity Portfolio

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard International Equity Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard International Equity Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		0.75%	0.75%	0.75%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		0.15%	0.17%	0.15%	[1]
Total Annual Portfolio Operating Expenses		0.90%	1.17%	0.90%
Fee Waiver and Expense Reimbursement	[2]	0.05%	0.02%	0.10%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	0.85%	1.15%	0.80%

Example

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard International Equity Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	87	282	494	1,103
Open Shares	117	370	642	1,419
R6 Shares	82	277	489	1,099

Portfolio Turnover

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 36% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in equity securities, principally common stocks, of relatively large non-US companies with market capitalizations in the range of companies included in the MSCI® Europe, Australasia and Far East (“EAFE®”) Index (ranging from approximately $1.6 billion to $274.4 billion as of April 9, 2015) that the Investment Manager believes are undervalued based on their earnings, cash flow or asset values.

In choosing stocks for the Portfolio, the Investment Manager looks for established companies in economically developed countries and may invest up to 15% of the Portfolio’s assets in securities of companies whose principal business activities are located in emerging market countries. Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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.

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard International Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. 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.LazardNet.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.

Best Quarter:
6/30/09 21.90%

Worst Quarter:
9/30/11 -17.77%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

Average Annual Returns Lazard International Equity Portfolio	1 Year	5 Years	10 Years	Life of Portfolio	Inception Date
Institutional Shares	(4.29%)	7.31%	5.34%	6.23%	Oct. 29, 1991
Open Shares	(4.57%)	7.00%	5.03%	4.96%	Jan. 23, 1997
R6 Shares	(4.29%)	7.31%	5.34%	6.23%
After Taxes on Distributions Institutional Shares	(4.29%)	7.14%	5.07%	5.40%
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	(2.04%)	5.99%	4.49%	5.06%
MSCI EAFE Index (reflects no deduction for fees, expenses or taxes) (Institutional)	(4.90%)	5.33%	4.43%	5.36%
MSCI EAFE Index (reflects no deduction for fees, expenses or taxes) (Open)	(4.90%)	5.33%	4.43%	4.84%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed .85%, 1.15% and .80% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio. Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement have been restated to reflect the current fee waiver and expense limitation arrangement.

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Lazard Global Fixed Income Portfolio

Lazard Global Fixed Income Portfolio

Investment Objective

The Portfolio seeks total return from current income and capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard Global Fixed Income Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard Global Fixed Income Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		0.50%	0.50%	0.50%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		3.62%	20.09%	3.62%	[1]
Total Annual Portfolio Operating Expenses		4.12%	20.84%	4.12%
Fee Waiver and Expense Reimbursement	[2]	3.37%	19.79%	3.42%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	0.75%	1.05%	0.70%

Example

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 fee waiver and expense reimbursment arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard Global Fixed Income Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	77	943	1,825	4,099
Open Shares	107	3,781	6,383	10,033
R6 Shares	72	939	1,821	4,096

Portfolio Turnover

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 78% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Portfolio invests at least 80% of its assets in Fixed Income Investments. “Fixed Income Investments” include all types of debt and income producing securities and other instruments, including bonds, notes (including structured notes), mortgage- related securities, asset-backed securities, Eurodollar and Yankee dollar instruments, money market instruments and foreign currency forward contracts, including non-deliverable forward contracts. Fixed Income Investments may be issued by US or foreign corporations or entities, including those with business activities located in emerging market countries; US or foreign banks; the US government, its agencies, authorities, instrumentalities or sponsored enterprises; US state and municipal governments; foreign governments and their political subdivisions; and supranational organizations (such as the World Bank).

In managing the Portfolio’s assets, the Investment Manager employs a relative value approach that is driven by its macroeconomic view of global interest rates, yield curves, sector spreads, and currencies, combined with an opportunistic, but disciplined, security selection process. The Investment Manager seeks to enhance the Portfolio’s total return by rotating investments through global bond and credit markets, maintaining or seeking exposure to foreign currencies in the discretion of the Investment Manager. The Investment Manager seeks to identify and exploit market inefficiencies (such as spread relationships between sectors in different countries, and undervalued or overlooked markets and securities) in seeking to achieve attractive risk-adjusted returns. The Investment Manager also seeks to identify investment opportunities with asymmetric risk/reward characteristics in seeking to enhance portfolio performance and mitigate risk.

The Portfolio’s currency exposure generally is managed relative to that of the Barclays Capital Global Aggregate Bond® Index—Unhedged in US dollar terms, and tactical exposures to non-US dollar currencies are based on the Investment Manager’s fundamental macroeconomic outlook, technical factors and the Investment Manager’s desired market positioning.

Under normal market conditions, the Portfolio invests significantly (at least 40%—unless market conditions are not deemed favorable by the Investment Manager, in which case the Portfolio would invest at least 30%) in issuers organized or located outside the US or doing a substantial amount of business outside the US, securities denominated in a foreign currency or foreign currency forward contracts. The Investment Manager allocates the Portfolio’s assets among various regions, countries and currencies, including the United States and the US dollar (but in no less than three different countries or currencies). The Portfolio may invest in securities of issuers with business activities located in emerging market countries or denominated in an emerging market currency.

The Portfolio may invest up to 15% of its assets in securities that are rated below investment grade (e.g., lower than Baa by Moody’s or lower than BBB by S&P) (“junk bonds”) or the unrated equivalent as determined by the Investment Manager. There are no restrictions on the Portfolio’s average portfolio maturity or duration or on the maturities of the individual debt and income producing securities and other instruments in which it may invest. Duration is an estimate of the sensitivity of the price (the value of principal) of a fixed-income security to a change in interest rates. Generally, the longer the duration, the higher the expected volatility. For example, the market price of a fixed-income security with a duration of three years would be expected to decline 3% if interest rates rose 1%. Conversely, the market price of the same security would be expected to increase 3% if interest rates fell 1%.

The Portfolio may, but is not required to, use derivative instruments that are part of its primary investment strategy, such as forward currency contracts, for hedging purposes.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Some debt securities may give the issuer the option to call, or redeem, the securities before their maturity. If securities held by the Portfolio are called during a time of declining interest rates (which is typically the case when issuers exercise options to call outstanding securities), the Portfolio may have to reinvest the proceeds in an investment offering a lower yield (and the Portfolio may not fully benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

Adjustable rate securities provide the Portfolio with a certain degree of protection against rises in interest rates, although such securities will participate in any declines in interest rates as well. Certain adjustable rate securities, such as those with interest rates that fluctuate directly or indirectly based on multiples of a stated index, are designed to be highly sensitive to changes in interest rates and can subject the holders thereof to extreme reductions of yield and possibly loss of principal. Certain fixed-income securities may be issued at a discount from their face value (such as zero coupon securities) or purchased at a price less than their stated face amount or at a price less than their issue price plus the portion of “original issue discount” previously accrued thereon, i.e., purchased at a “market discount.” The amount of original issue discount and/or market discount on certain obligations may be significant, and accretion of market discount together with original issue discount will cause the Portfolio to realize income prior to the receipt of cash payments with respect to these securities.

Mortgage-Related and Asset-Backed Securities Risk. Mortgage-related securities are complex instruments, subject to both credit and prepayment risk, and may be more volatile and less liquid, and more difficult to price accurately, than more traditional debt securities. Mortgage- related securities generally are subject to credit risks associated with the performance of the underlying mortgage properties. Prepayment risk can lead to fluctuations in value of the mortgage-related security which may be pronounced. As with other interest-bearing securities, the prices of certain mortgage-related securities are inversely affected by changes in interest rates. However, although the value of a mortgage-related security may decline when interest rates rise, the converse is not necessarily true, since during periods of declining interest rates the mortgages underlying the security are more likely to be prepaid.

The risks of asset-backed securities are similar to those of mortgage-related securities. However, asset-backed securities present certain risks that are not presented by mortgage-related securities. Primarily, these securities may provide the Portfolio with a less effective security interest in the related collateral than do mortgage-related securities.

Structured Products Risk. Structured notes and other structured products are privately negotiated debt instruments where the principal and/or interest is determined by reference to a specified asset, market or rate, or the differential performance of two assets or markets. Structured products can have risks of both fixed income securities and derivatives transactions. Derivatives transactions may reduce returns or increase volatility, perhaps substantially, and they are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related reference assets, markets or rates. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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. Currency investments could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies.

Liquidity Risk. The lack of a readily available market may limit the ability of the Portfolio to sell certain securities at the time and price it would like. The size of certain debt securities offerings of emerging markets issuers may be relatively smaller in size than debt offerings in more developed markets and, in some cases, the Portfolio, by itself or together with other Portfolios or other accounts managed by the Investment Manager, may hold a position in a security that is large relative to the typical trading volume for that security; these factors can make it difficult for the Portfolio to dispose of the position at the desired time or price.

Forward Currency Contracts and Other Derivatives Risk. Forward currency contracts and other derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Forward currency contracts, structured products and other over-the-counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. These derivatives transactions are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related currency or other reference asset. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions, even if entered into for hedging purposes, may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Global Fixed Income Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. The bar chart shows how the performance of the Portfolio’s Institutional Shares has varied from year to year. Updated performance information is available at www.LazardNet.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.

Best Quarter:
6/30/14 2.79%

Worst Quarter:
6/30/13 -3.63%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

Average Annual Returns Lazard Global Fixed Income Portfolio	1 Year	Life of Portfolio	Inception Date
Institutional Shares	0.08%	(0.32%)	Mar. 30, 2012
Open Shares	(0.22%)	(0.62%)	Mar. 30, 2012
R6 Shares	0.08%	(0.32%)
After Taxes on Distributions Institutional Shares	(0.59%)	(0.81%)
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	0.14%	(0.40%)
Barclays Capital Global Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)	0.59%	0.48%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed .75%, 1.05% and .70% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the investment management agreement between the Investment Manager and the Fund, on behalf of the Portfolio. Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement have been restated to reflect the current fee waiver and expense limitation arrangement.

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Lazard Capital Allocator Opportunistic Strategies Portfolio

Lazard Capital Allocator Opportunistic Strategies Portfolio

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard Capital Allocator Opportunistic Strategies Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard Capital Allocator Opportunistic Strategies Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		1.00%	1.00%	1.00%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses (including dividend and interest expenses on securities sold short)		0.15%	0.56%	0.15%	[1]
Acquired Fund Fees and Expenses (Underlying Funds)		34.00%	34.00%	34.00%	[1]
Total Annual Portfolio Operating Expenses		1.49%	2.15%	1.49%
Fee Waiver and Expense Reimbursement	[2]	0.13%	0.49%	0.18%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	1.36%	1.66%	1.31%

Example

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard Capital Allocator Opportunistic Strategies Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	138	458	801	1,768
Open Shares	169	626	1,109	2,444
R6 Shares	133	453	796	1,764

Portfolio Turnover

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 265% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio utilizes an asset allocation strategy to invest in a global portfolio of uncorrelated assets that can include exposure, through underlying vehicles, to stocks, bonds, commodities and other investments.

The Portfolio invests primarily in exchange-traded open-end management investment companies and similar products, which generally pursue a passive index-based strategy (commonly known as ETFs), as well as actively managed closed-end management investment companies (“closed-end funds”) and exchange-traded notes (“ETNs” and collectively with ETFs and closed-end funds, “Underlying Funds”). ETFs and ETNs in which the Portfolio may invest include both ETFs and ETNs designed to correlate directly with an index and ETFs and ETNs designed to correlate inversely with an index and may include actively-managed ETFs. The Portfolio, through Underlying Funds in which it invests, may invest in non-US companies (including those in emerging markets), and the Portfolio also may invest directly in equity and debt securities in addition to its investments in Underlying Funds. The Portfolio’s investment portfolio is concentrated in a relatively small number of holdings (generally 10 to 30). Investors can invest directly in Underlying Funds and do not need to invest in Underlying Funds through mutual funds or separately managed accounts.

The Portfolio may, but is not required to, effect short sales of securities; enter into equity, total return and currency swap agreements, and forward currency contracts; and write put and covered call options on securities (including ETFs and ETNs), indexes and currencies, for hedging purposes or to seek to increase returns, including as a substitute for purchasing an Underlying Fund. A short sale involves the sale of a security that the Portfolio does not own in the expectation of purchasing the same security (or a security exchangeable therefor) at a later date and at a lower price and profiting from the price decline. Similarly, when taking short positions with respect to securities through investments in derivative instruments, the Investment Manager is expecting the value of such securities to fall during the period of the Portfolio’s investment exposure.

Although the Portfolio is classified as “diversified” under the 1940 Act, it may invest in a smaller number of issuers than other, more diversified, investment portfolios.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Underlying Funds Risk. Shares of ETFs and closed-end funds in which the Portfolio invests may trade at prices that vary from their NAVs, sometimes significantly. The shares of ETFs and closed-end funds may trade at prices at, below or above their most recent NAV. Shares of closed-end funds, in particular, frequently trade at persistent discounts to their NAV. In addition, the performance of an ETF pursuing a passive index-based strategy may diverge from the performance of the index. ETNs may not trade in the secondary market, but typically are redeemable by the issuer. The Portfolio’s investments in Underlying Funds are subject to the risks of Underlying Funds’ investments, as well as to the general risks of investing in Underlying Funds. Portfolio shares will bear not only the Portfolio’s management fees and operating expenses, but also their proportional share of the management fees and operating expenses of the ETFs and closed-end funds in which the Portfolio invests. While ETNs do not have management fees, they are subject to certain investor fees. ETNs are debt securities that, like ETFs, typically are listed on exchanges and their terms generally provide for a return that tracks specified market indexes. However, unlike ETFs and closed-end funds, ETNs are not registered investment companies and thus are not regulated under the 1940 Act. In addition, as debt securities, ETNs are subject to the additional risk of the creditworthiness of the issuer. ETNs typically do not make periodic interest payments.

The Portfolio may be limited by the 1940 Act in the amount of its assets that may be invested in ETFs and closed-end funds unless an ETF or a closed-end fund has received an exemptive order from the SEC on which the Portfolio may rely or an exemption is available.

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.

Emerging Market Risk. 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. The securities markets of emerging market countries have historically been extremely volatile. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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. Currency investments could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies.

Fixed Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Focused Investing Risk. The Portfolio’s NAV 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.

Short Position Risk. Short sales may involve substantial risks. Short sales of securities expose the Portfolio to the risk that it will be required to “cover” the short position at a time when the underlying security has appreciated in value, thus resulting in a loss to the Portfolio that could be substantial.

Derivatives Risk. Derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Over-the-counter swap agreements, forward currency contracts, over-the-counter options on securities (including options on ETFs and ETNs), indexes and currencies and other over-the-counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. These derivatives transactions, as well as the exchange-traded options in which the Portfolio may invest, are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related index, commodity, interest rate, currency, security or other reference asset. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions, even when entered into for hedging purposes, may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in high transaction costs and an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Capital Allocator Opportunistic Strategies 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. Updated performance information is available at www.LazardNet.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.

Best Quarter:
6/30/09 14.66%

Worst Quarter:
9/30/11 -10.44%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

The Global Asset Allocation Blended Index is rebalanced quarterly and is a blended index constructed by the Investment Manager that is comprised of 60% MSCI World Index and 40% Barclays Capital US Aggregate Bond Index.

Average Annual Returns Lazard Capital Allocator Opportunistic Strategies Portfolio	1 Year	5 Years	Life of Portfolio	Inception Date
Institutional Shares	4.40%	7.22%	4.09%	Mar. 26, 2008
Open Shares	4.10%	6.90%	3.84%	Mar. 31, 2008
R6 Shares	4.40%	7.22%	4.09%
After Taxes on Distributions Institutional Shares	2.07%	5.77%	2.82%
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	3.01%	5.23%	2.78%
MSCI World Index (reflects no deduction for fees, expenses or taxes) (Institutional)	4.94%	10.20%	4.78%
MSCI World Index (reflects no deduction for fees, expenses or taxes) (Open)	4.94%	10.20%	4.86%
Global Asset Allocation Blended Index (reflects no deduction for fees, expenses or taxes) (Institutional)	5.36%	8.23%	5.31%
Global Asset Allocation Blended Index (reflects no deduction for fees, expenses or taxes) (Open)	5.36%	8.23%	5.35%

[1] Based on estimated amounts for the current fiscal year, using amounts for Institutional Shares from the last fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.02%, 1.32% and .97% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, dividend and interest expenses on securities sold short, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

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Label

Element

Value

Risk/Return:

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Risk/Return [Heading]

rr_RiskReturnHeading

Lazard US Mid Cap Equity Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks long-term capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-05-01

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 95% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

95.00%

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Portfolio invests primarily in a focused portfolio of equity securities, principally common stocks, of mid cap US companies that the Investment Manager believes have strong and/or improving financial productivity and are undervalued based on their earnings, cash flow or asset values. The Investment Manager considers “mid cap companies” to be those companies that, at the time of initial purchase by the Portfolio, have market capitalizations within the range of companies included in the Russell Midcap^® Index (ranging from approximately $220.9 million to $37.8 billion as of April 9, 2015).

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of medium-size (mid cap) US companies. The Portfolio may invest up to 20% of its assets in equity securities of larger or smaller US or non-US companies.

Although the Portfolio is classified as “diversified” under the 1940 Act, it may invest in a smaller number of issuers than other, more diversified investment portfolios.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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. 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.

Focused Investing Risk. The Portfolio’s NAV 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.

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 Year-by-Year Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Mid Cap Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. 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.LazardNet.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.

Performance Information Illustrates Variability of Returns [Text]

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The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Mid Cap Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance.

Performance Availability Phone [Text]

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(800) 823-6300

Performance Availability Website Address [Text]

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www.LazardNet.com

Performance Past Does Not Indicate Future [Text]

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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 Closing [Text Block]

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Best Quarter:
6/30/09 21.18%

Worst Quarter:
12/31/08 -26.54%

Highest Quarterly Return, Label

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Best Quarter:

Highest Quarterly Return, Date

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Jun. 30, 2009

Highest Quarterly Return

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21.18%

Lowest Quarterly Return, Label

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Worst Quarter:

Lowest Quarterly Return, Date

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Dec. 31, 2008

Lowest Quarterly Return

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(26.54%)

Performance Table Heading

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Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

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(reflects no deduction for fees, expenses or taxes)

Performance Table Uses Highest Federal Rate

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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

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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]

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After-tax returns are shown only for Institutional Shares. After-tax returns of the Portfolio’s other share classes will vary.

Performance Table Narrative

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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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

Russell Midcap Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

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1 Year

rr_AverageAnnualReturnYear01

13.22%

5 Years

rr_AverageAnnualReturnYear05

17.19%

10 Years

rr_AverageAnnualReturnYear10

9.56%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

9.60%

Institutional Shares

Risk/Return:

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Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.70%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.45%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.40%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.05%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

107

Expense Example, with Redemption, 3 Years

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419

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

754

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,701

Annual Return 2005

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8.89%

Annual Return 2006

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14.85%

Annual Return 2007

rr_AnnualReturn2007

(2.93%)

Annual Return 2008

rr_AnnualReturn2008

(38.33%)

Annual Return 2009

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38.49%

Annual Return 2010

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23.43%

Annual Return 2011

rr_AnnualReturn2011

(5.58%)

Annual Return 2012

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5.76%

Annual Return 2013

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32.95%

Annual Return 2014

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14.35%

1 Year

rr_AverageAnnualReturnYear01

14.35%

5 Years

rr_AverageAnnualReturnYear05

13.38%

10 Years

rr_AverageAnnualReturnYear10

6.87%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

8.59%

Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 04, 1997

Institutional Shares | After Taxes on Distributions

Risk/Return:

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1 Year

rr_AverageAnnualReturnYear01

14.20%

5 Years

rr_AverageAnnualReturnYear05

13.28%

10 Years

rr_AverageAnnualReturnYear10

6.19%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

7.21%

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

8.22%

5 Years

rr_AverageAnnualReturnYear05

10.74%

10 Years

rr_AverageAnnualReturnYear10

5.39%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

6.54%

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.57%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.57%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.22%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.35%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

137

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

474

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

834

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,849

1 Year

rr_AverageAnnualReturnYear01

13.94%

5 Years

rr_AverageAnnualReturnYear05

13.04%

10 Years

rr_AverageAnnualReturnYear10

6.57%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

8.28%

Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 04, 1997

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.70%

^[2]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.45%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.45%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.00%

^[1]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

102

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

414

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

749

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,697

1 Year

rr_AverageAnnualReturnYear01

14.35%

5 Years

rr_AverageAnnualReturnYear05

13.38%

10 Years

rr_AverageAnnualReturnYear10

6.87%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

8.59%

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.05%, 1.35% and 1.00% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

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Lazard Global Equity Select Portfolio

Lazard Global Equity Select Portfolio

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard Global Equity Select Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard Global Equity Select Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		0.85%	0.85%	0.85%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		3.77%	12.24%	3.77%	[1]
Total Annual Portfolio Operating Expenses		4.62%	13.34%	4.62%
Fee Waiver and Expense Reimbursement	[2]	3.52%	11.94%	3.57%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	1.10%	1.40%	1.05%

Example

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard Global Equity Select Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	112	1,076	2,047	4,507
Open Shares	143	2,681	4,813	8,770
R6 Shares	107	1,071	2,043	4,504

Portfolio Turnover

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 64% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in equity securities, principally common stocks, of companies that the Investment Manager believes have strong and/or improving financial productivity and are undervalued based on their earnings, cash flow or asset values. In managing the Portfolio, the Investment Manager utilizes a flexible investment approach and engages in bottom-up, fundamental security analysis and selection. The Portfolio may invest in securities across the capitalization spectrum.

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities. In addition, under normal market conditions, the Portfolio invests significantly (at least 40%—unless market conditions are not deemed favorable by the Investment Manager, in which case the Portfolio would invest at least 30%) in non-US companies. The Investment Manager will allocate the Portfolio’s assets among various regions and countries, including the United States (but in no less than three different countries). The Portfolio’s investments in non-US companies may include companies whose principal business activities are located in emerging market countries.

Although the Portfolio is classified as “diversified” under the 1940 Act, it may invest in a smaller number of issuers than other, more diversified investment portfolios.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Focused Investing Risk. The Portfolio’s NAV 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.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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.

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.

Performance Bar Chart and Table Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Global Equity Select Portfolio by showing the Portfolio’s performance for the first complete calendar year of operation compared to that of a broad measure of market performance. The bar chart shows the performance of the Portfolio’s Institutional Shares. Updated performance information is available at www.LazardNet.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.

Best Quarter:
6/30/14 4.75%

Worst Quarter:
9/30/14 -2.31%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

Average Annual Returns Lazard Global Equity Select Portfolio	1 Year	Life of Portfolio	Inception Date
Institutional Shares	3.84%	3.83%	Dec. 31, 2013
Open Shares	3.54%	3.53%	Dec. 31, 2013
R6 Shares	3.84%	3.83%
After Taxes on Distributions Institutional Shares	3.69%	3.68%
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	2.30%	2.92%
MSCI All Country World Index (reflects no deduction for fees, expenses or taxes)	4.16%	4.16%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.10%, 1.40% and 1.05% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

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Lazard Emerging Markets Multi Asset Portfolio

Lazard Emerging Markets Multi Asset Portfolio

Investment Objective

The Portfolio seeks total return from current income and capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard Emerging Markets Multi Asset Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard Emerging Markets Multi Asset Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		1.00%	1.00%	1.00%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		0.28%	0.98%	0.28%	[1]
Total Annual Portfolio Operating Expenses		1.28%	2.23%	1.28%
Fee Waiver and Expense Reimbursement	[2]		0.63%	0.03%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	1.28%	1.60%	1.25%

Example

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard Emerging Markets Multi Asset Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	130	406	702	1,545
Open Shares	163	505	871	1,900
R6 Shares	127	397	686	1,511

Portfolio Turnover

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 122% of the average value of its portfolio.

Principal Investment Strategies

The Investment Manager allocates the Portfolio’s assets among various emerging markets equity, debt and currency investment strategies managed by the Investment Manager in proportions consistent with the Investment Manager’s evaluation of various economic and other factors through quantitative and qualitative analysis. These proportions are changed from time to time without notice to shareholders, and at any given time the allocation to one strategy (other than currency investments) may comprise a substantial percentage of the Portfolio’s assets or, conversely, there may be no allocation to such strategy. The Investment Manager will make allocation decisions among the strategies based on quantitative and qualitative analysis using a number of different tools, including proprietary software models. Quantitative analysis includes statistical analysis of portfolio risks, factor dependencies and trading tendencies. Qualitative analysis includes analysis of the global economic environment as well as internal and external research on individual securities, portfolio holdings, attribution factors, behavioral patterns and overall market views and scenarios.

The Portfolio may invest in:

• equity securities, including common stocks and depositary receipts and shares

• debt securities issued or guaranteed by governments, government agencies or supranational bodies or companies or other private-sector entities, including fixed and/or floating rate investment grade and non-investment grade bonds (“junk bonds”), convertible securities, commercial paper, collateralized debt obligations (“CDOs”), short- and medium-term obligations and other fixed-income obligations

• emerging markets currencies and related instruments (primarily forward currency contracts) and structured notes

The securities in which the Portfolio invests may be denominated in the US dollar, the Canadian dollar, the Euro, the Japanese yen, the Pound Sterling, or the local currency of the issuer. Under normal circumstances, the Portfolio invests at least 80% of its assets in securities and other investments that are economically tied to emerging market countries. Emerging market countries include all countries not represented by the MSCI World Index. The allocation of the Portfolio’s assets among countries and regions may vary from time to time based on the Investment Manager’s judgment and its analysis of market conditions.

The Portfolio may invest without limitation in securities rated below investment grade (e.g., lower than Baa by Moody’s Investors Service, Inc. (“Moody’s”) or lower than BBB by Standard & Poor’s Ratings Group (“S&P”)) (“junk bonds”) or securities that are unrated. Additionally, the Portfolio is not restricted to investments in debt securities of any particular maturity or duration. Duration is an estimate of the sensitivity of the price (the value of principal) of a fixed-income security to a change in interest rates. Generally, the longer the duration, the higher the expected volatility. For example, the market price of a fixed-income security with a duration of three years would be expected to decline 3% if interest rates rose 1%. Conversely, the market price of the same security would be expected to increase 3% if interest rates fell 1%.

The Portfolio’s currency strategy uses forward currency contracts, options on currencies and structured notes, although the Portfolio may not allocate assets to the currency strategy at all times, and there may be no allocation to currency investments for significant periods of time. The Portfolio also may, but is not required to, enter into forward foreign currency contracts, purchase options on currencies and enter into currency swaps to hedge the foreign currency exposure associated with equity or debt investment strategies. The Portfolio also may enter into credit default swaps and other types of swaps, for hedging purposes or to seek to increase returns.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Allocation Risk. The Portfolio’s ability to achieve its investment objective depends in part on the Investment Manager’s skill in determining the Portfolio’s allocation among the investment strategies. The Investment Manager’s evaluations and assumptions underlying its allocation decisions may differ from actual market conditions.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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. Currency investments could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies.

Value Investing and Growth Investing Risks. The Portfolio may invest a portion of its assets in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The Portfolio also may invest a portion of its assets in stocks believed by the Investment Manager to have the potential for growth, but that may not realize such perceived potential for extended periods of time or may never realize such perceived growth potential. Such stocks may be more volatile than other stocks because they can be more sensitive to investor perceptions of the issuing company’s growth potential. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

Quantitative Model Risk. The success of the Portfolio depends upon effectiveness of the Investment Manager’s quantitative model. A quantitative model, such as the risk and other models used by the Investment Manager requires adherence to a systematic, disciplined process. The Investment Manager’s ability to monitor and, if necessary, adjust its quantitative model could be adversely affected by various factors, including incorrect or outdated market and other data inputs. Factors that affect a security’s value can change over time, and these changes may not be reflected in the quantitative model. In addition, the factors used in quantitative analysis and the weight placed on those factors may not be predictive of a security’s value.

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.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Some debt securities may give the issuer the option to call, or redeem, the securities before their maturity, and, during a time of declining interest rates, the Portfolio may have to reinvest the proceeds in an investment offering a lower yield (and the Portfolio may not benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

Structured notes are privately negotiated debt instruments where the principal and/or interest is determined by reference to a specified asset, market or rate, or the differential performance of two assets or markets. Structured notes can have risks of both debt securities and derivatives transactions.

Liquidity Risk. The lack of a readily available market may limit the ability of the Portfolio to sell certain securities at the time and price it would like. The size of certain securities offerings of emerging markets issuers may be relatively smaller in size than offerings in more developed markets and, in some cases, the Portfolio, by itself or together with other Portfolios or other accounts managed by the Investment Manager, may hold a position in a security that is large relative to the typical trading volume for that security; these factors can make it difficult for the Portfolio to dispose of the position at the desired time or price.

Forward Currency Contracts and Other Derivatives Risk. Forward currency contracts and other derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Forward currency contracts, over-the-counter options on currencies, structured notes, swap agreements and other over-the-counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. These derivatives transactions, as well as the exchange-traded options in which the Portfolio may invest, are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related currency, security or other reference asset. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions, even if entered into for hedging purposes, may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in high transaction costs and an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Emerging Markets Multi Asset Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. The bar chart shows how the performance of the Portfolio’s Institutional Shares has varied from year to year. Updated performance information is available at www.LazardNet.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.

Best Quarter:
3/31/12 12.14%

Worst Quarter:
6/30/13 -7.19%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

Average Annual Returns Lazard Emerging Markets Multi Asset Portfolio	1 Year	Life of Portfolio	Inception Date
Institutional Shares	(5.57%)	(2.60%)	Mar. 31, 2011
Open Shares	(5.89%)	(2.91%)	Mar. 31, 2011
R6 Shares	(5.57%)	(2.60%)
After Taxes on Distributions Institutional Shares	(6.01%)	(2.89%)
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	(2.78%)	(1.92%)
MSCI Emerging Markets Index (reflects no deduction for fees, expenses or taxes)	(2.19%)	(2.76%)

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2025, to the extent Total Annual Portfolio Operating Expenses exceed 1.30%, 1.60% and 1.25% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard Global Fixed Income Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks total return from current income and capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-05-01

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 78% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

78.00%

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 fee waiver and expense reimbursment arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, the Portfolio invests at least 80% of its assets in Fixed Income Investments. “Fixed Income Investments” include all types of debt and income producing securities and other instruments, including bonds, notes (including structured notes), mortgage- related securities, asset-backed securities, Eurodollar and Yankee dollar instruments, money market instruments and foreign currency forward contracts, including non-deliverable forward contracts. Fixed Income Investments may be issued by US or foreign corporations or entities, including those with business activities located in emerging market countries; US or foreign banks; the US government, its agencies, authorities, instrumentalities or sponsored enterprises; US state and municipal governments; foreign governments and their political subdivisions; and supranational organizations (such as the World Bank).

In managing the Portfolio’s assets, the Investment Manager employs a relative value approach that is driven by its macroeconomic view of global interest rates, yield curves, sector spreads, and currencies, combined with an opportunistic, but disciplined, security selection process. The Investment Manager seeks to enhance the Portfolio’s total return by rotating investments through global bond and credit markets, maintaining or seeking exposure to foreign currencies in the discretion of the Investment Manager. The Investment Manager seeks to identify and exploit market inefficiencies (such as spread relationships between sectors in different countries, and undervalued or overlooked markets and securities) in seeking to achieve attractive risk-adjusted returns. The Investment Manager also seeks to identify investment opportunities with asymmetric risk/reward characteristics in seeking to enhance portfolio performance and mitigate risk.

The Portfolio’s currency exposure generally is managed relative to that of the Barclays Capital Global Aggregate Bond® Index—Unhedged in US dollar terms, and tactical exposures to non-US dollar currencies are based on the Investment Manager’s fundamental macroeconomic outlook, technical factors and the Investment Manager’s desired market positioning.

Under normal market conditions, the Portfolio invests significantly (at least 40%—unless market conditions are not deemed favorable by the Investment Manager, in which case the Portfolio would invest at least 30%) in issuers organized or located outside the US or doing a substantial amount of business outside the US, securities denominated in a foreign currency or foreign currency forward contracts. The Investment Manager allocates the Portfolio’s assets among various regions, countries and currencies, including the United States and the US dollar (but in no less than three different countries or currencies). The Portfolio may invest in securities of issuers with business activities located in emerging market countries or denominated in an emerging market currency.

The Portfolio may invest up to 15% of its assets in securities that are rated below investment grade (e.g., lower than Baa by Moody’s or lower than BBB by S&P) (“junk bonds”) or the unrated equivalent as determined by the Investment Manager. There are no restrictions on the Portfolio’s average portfolio maturity or duration or on the maturities of the individual debt and income producing securities and other instruments in which it may invest. Duration is an estimate of the sensitivity of the price (the value of principal) of a fixed-income security to a change in interest rates. Generally, the longer the duration, the higher the expected volatility. For example, the market price of a fixed-income security with a duration of three years would be expected to decline 3% if interest rates rose 1%. Conversely, the market price of the same security would be expected to increase 3% if interest rates fell 1%.

The Portfolio may, but is not required to, use derivative instruments that are part of its primary investment strategy, such as forward currency contracts, for hedging purposes.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Some debt securities may give the issuer the option to call, or redeem, the securities before their maturity. If securities held by the Portfolio are called during a time of declining interest rates (which is typically the case when issuers exercise options to call outstanding securities), the Portfolio may have to reinvest the proceeds in an investment offering a lower yield (and the Portfolio may not fully benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

Adjustable rate securities provide the Portfolio with a certain degree of protection against rises in interest rates, although such securities will participate in any declines in interest rates as well. Certain adjustable rate securities, such as those with interest rates that fluctuate directly or indirectly based on multiples of a stated index, are designed to be highly sensitive to changes in interest rates and can subject the holders thereof to extreme reductions of yield and possibly loss of principal. Certain fixed-income securities may be issued at a discount from their face value (such as zero coupon securities) or purchased at a price less than their stated face amount or at a price less than their issue price plus the portion of “original issue discount” previously accrued thereon, i.e., purchased at a “market discount.” The amount of original issue discount and/or market discount on certain obligations may be significant, and accretion of market discount together with original issue discount will cause the Portfolio to realize income prior to the receipt of cash payments with respect to these securities.

Mortgage-Related and Asset-Backed Securities Risk. Mortgage-related securities are complex instruments, subject to both credit and prepayment risk, and may be more volatile and less liquid, and more difficult to price accurately, than more traditional debt securities. Mortgage- related securities generally are subject to credit risks associated with the performance of the underlying mortgage properties. Prepayment risk can lead to fluctuations in value of the mortgage-related security which may be pronounced. As with other interest-bearing securities, the prices of certain mortgage-related securities are inversely affected by changes in interest rates. However, although the value of a mortgage-related security may decline when interest rates rise, the converse is not necessarily true, since during periods of declining interest rates the mortgages underlying the security are more likely to be prepaid.

The risks of asset-backed securities are similar to those of mortgage-related securities. However, asset-backed securities present certain risks that are not presented by mortgage-related securities. Primarily, these securities may provide the Portfolio with a less effective security interest in the related collateral than do mortgage-related securities.

Structured Products Risk. Structured notes and other structured products are privately negotiated debt instruments where the principal and/or interest is determined by reference to a specified asset, market or rate, or the differential performance of two assets or markets. Structured products can have risks of both fixed income securities and derivatives transactions. Derivatives transactions may reduce returns or increase volatility, perhaps substantially, and they are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related reference assets, markets or rates. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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. Currency investments could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies.

Liquidity Risk. The lack of a readily available market may limit the ability of the Portfolio to sell certain securities at the time and price it would like. The size of certain debt securities offerings of emerging markets issuers may be relatively smaller in size than debt offerings in more developed markets and, in some cases, the Portfolio, by itself or together with other Portfolios or other accounts managed by the Investment Manager, may hold a position in a security that is large relative to the typical trading volume for that security; these factors can make it difficult for the Portfolio to dispose of the position at the desired time or price.

Forward Currency Contracts and Other Derivatives Risk. Forward currency contracts and other derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Forward currency contracts, structured products and other over-the-counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. These derivatives transactions are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related currency or other reference asset. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions, even if entered into for hedging purposes, may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

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 Year-by-Year Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Global Fixed Income Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. The bar chart shows how the performance of the Portfolio’s Institutional Shares has varied from year to year. Updated performance information is available at www.LazardNet.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.

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 Global Fixed Income Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:
6/30/14 2.79%

Worst Quarter:
6/30/13 -3.63%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2014

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

2.79%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2013

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(3.63%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

Barclays Capital Global Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

0.59%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

0.48%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.50%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

3.62%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

4.12%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(3.37%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.75%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

77

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

943

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,825

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

4,099

Annual Return 2013

rr_AnnualReturn2013

(4.13%)

Annual Return 2014

rr_AnnualReturn2014

0.08%

1 Year

rr_AverageAnnualReturnYear01

0.08%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(0.32%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 30, 2012

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(0.59%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(0.81%)

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

0.14%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(0.40%)

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.50%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

20.09%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

20.84%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(19.79%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.05%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

107

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

3,781

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

6,383

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

10,033

1 Year

rr_AverageAnnualReturnYear01

(0.22%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(0.62%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 30, 2012

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.50%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

3.62%

^[2]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

4.12%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(3.42%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.70%

^[1]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

72

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

939

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,821

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

4,096

1 Year

rr_AverageAnnualReturnYear01

0.08%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(0.32%)

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed .75%, 1.05% and .70% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the investment management agreement between the Investment Manager and the Fund, on behalf of the Portfolio. Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement have been restated to reflect the current fee waiver and expense limitation arrangement.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard Emerging Markets Core Equity Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks long-term capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-05-01

Portfolio Turnover [Heading]

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Portfolio Turnover

Portfolio Turnover [Text Block]

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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 45% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

45.00%

Expense Example [Heading]

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Example

Expense Example Narrative [Text Block]

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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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

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In managing the Portfolio, the Investment Manager utilizes a flexible, core investment approach and engages in bottom-up, fundamental security analysis and selection. The Investment Manager may consider a security’s growth or value potential in managing the Portfolio. The Portfolio may invest in securities across the capitalization spectrum, although it typically invests in securities of companies with a market capitalization of $300 million or more.

The allocation of the Portfolio’s assets among countries and regions may vary from time to time based on the Investment Manager’s judgment and its analysis of market conditions. Emerging market countries include all countries not represented by the MSCI World Index. Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of companies that are economically tied to emerging market countries.

Risk [Heading]

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Principal Investment Risks

Risk Narrative [Text Block]

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The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Small Cap Companies Risk. Small 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 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.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

Growth Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to have the potential for growth, but that may not realize such perceived potential for extended periods of time or may never realize such perceived growth potential. Such stocks may be more volatile than other stocks because they can be more sensitive to investor perceptions of the issuing company’s growth potential. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

Risk Lose Money [Text]

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The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Bar Chart and Performance Table [Heading]

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Performance Bar Chart and Table Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

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The accompanying bar chart and table provide some indication of the risks of investing in Lazard Emerging Markets Core Equity Portfolio by showing the Portfolio’s performance for the first complete calendar year of operation compared to that of a broad measure of market performance. The bar chart shows the performance of the Portfolio’s Institutional Shares. Updated performance information is available at www.LazardNet.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.

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 Emerging Markets Core Equity Portfolio by showing the Portfolio’s performance for the first complete calendar year of operation compared to that of a broad measure of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.com

Performance Past Does Not Indicate Future [Text]

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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 Closing [Text Block]

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Best Quarter:
6/30/14 7.59%

Worst Quarter:
9/30/14 -3.91%

Highest Quarterly Return, Label

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Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2014

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

7.59%

Lowest Quarterly Return, Label

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Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2014

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(3.91%)

Performance Table Heading

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Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

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(reflects no deduction for fees, expenses or taxes)

Performance Table Uses Highest Federal Rate

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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

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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]

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After-tax returns are shown only for Institutional Shares. After-tax returns of the Portfolio’s other share classes will vary.

Performance Table Narrative

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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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

MSCI Emerging Markets Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(2.19%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(4.31%)

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

1.28%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

2.28%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.98%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.30%

^[1]

Expense Example, with Redemption, 1 Year

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132

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

618

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,131

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,539

Annual Return 2014

rr_AnnualReturn2014

(1.25%)

1 Year

rr_AverageAnnualReturnYear01

(1.25%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(2.51%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 31, 2013

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(1.39%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(2.63%)

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(0.46%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(1.85%)

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

1.56%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

2.81%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(1.21%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.60%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

163

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

757

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,377

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

3,050

1 Year

rr_AverageAnnualReturnYear01

(1.56%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(2.77%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 31, 2013

R6

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

1.28%

^[2]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

2.28%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(1.03%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.25%

^[1]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

127

Expense Example, with Redemption, 3 Years

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613

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,126

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,536

1 Year

rr_AverageAnnualReturnYear01

(1.25%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

(2.51%)

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.30%, 1.60% and 1.25% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Lazard Emerging Markets Income Portfolio

Lazard Emerging Markets Income Portfolio

Investment Objective

The Portfolio seeks total return consisting of appreciation and income.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard Emerging Markets Income Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard Emerging Markets Income Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		0.65%	0.65%	0.65%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		4.50%	13.06%	4.50%	[1]
Total Annual Portfolio Operating Expenses		5.15%	13.96%	5.15%
Fee Waiver and Expense Reimbursement	[2]	4.25%	12.76%	4.30%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	0.90%	1.20%	0.85%

Example

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard Emerging Markets Income Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	92	1,162	2,230	4,884
Open Shares	122	2,767	4,958	8,933
R6 Shares	87	1,158	2,226	4,882

Portfolio Turnover

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. For the period from April 30, 2014 (commencement of operations) through December 31, 2014, the Portfolio’s portfolio turnover rate was 125% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Portfolio invests at least 80% of its assets in currencies, debt securities, derivative instruments and other investments that are economically tied to emerging market countries. Such investments may include combinations of these instruments that have economic characteristics similar to currencies or debt securities economically tied to emerging markets countries, such as a currency forward contract denominated in an emerging markets currency and US dollar-denominated debt security in a principal amount corresponding to the notional value of forward contracts, which together have economic characteristics similar to a debt security denominated in the emerging markets currency. Derivatives instruments in which the Portfolio may invest include forward currency contracts (including non-deliverable forward contracts). Debt securities in which the Portfolio may invest include debt securities issued or guaranteed by governments, government agencies or supranational bodies; corporate obligations; fixed and/or adjustable rate or inflation-linked investment grade and non- investment grade bonds (“junk bonds”); convertible securities; zero coupon securities; CDOs; short- and medium-term obligations and other fixed-income obligations; and commercial paper and money market instruments such as certificates of deposit.

Emerging market countries include all countries represented by the JPMorgan Emerging Local Markets Plus Index (ELMI +) or countries outside of the G-10, although the allocation of the Portfolio’s assets among countries and regions may vary from time to time based on the judgment of the Investment Manager and its analysis of market conditions. The securities or instruments in which the Portfolio invests may be denominated in US and non-US currencies, including the local currency of the issuer.

Although the Portfolio is not restricted to investments in securities of any particular maturity or duration, the average duration of the Portfolio is expected to be short, typically less than one year. The Investment Manager may extend duration in particular countries when domestic yield curves are favorable.

The Portfolio is not limited to securities of any particular quality or investment grade and, as a result, the Portfolio may invest in securities rated below investment grade (e.g., lower than Baa by Moody’s or lower than BBB by S&P) (“junk bonds”) or securities that are unrated.

The Portfolio may, but is not required to, use derivative instruments that are part of its primary investment strategy, such as forward currency contracts, for hedging purposes.

The Portfolio is classified as “non-diversified” under the 1940 Act, 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.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies.

Forward Currency Contracts and Other Derivatives Risk. Forward currency contracts and other derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Forward currency contracts and other over-the- counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. These derivatives transactions, as well as the exchange-traded options and other derivatives transactions in which the Portfolio may invest, are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related currency, security or other reference asset. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions, even if entered into for hedging purposes, may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

Counterparty Credit Risk. The Portfolio’s investment strategy is dependent in significant part on counterparties to derivatives transactions. Transactions with such counterparties are subject to the risk of default by a counterparty, which could result in the loss of monies owed to the Portfolio by a counterparty.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities ("junk bonds") are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non- investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Some debt securities may give the issuer the option to call, or redeem, the securities before their maturity. If securities held by the Portfolio are called during a time of declining interest rates (which is typically the case when issuers exercise options to call outstanding securities), the Portfolio may have to reinvest the proceeds in an investment offering a lower yield (and the Portfolio may not fully benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

Adjustable rate or inflation-linked securities provide the Portfolio with a certain degree of protection against rises in interest rates or inflation rates, respectively, although adjustable rate securities will participate in any declines in interest rates and inflation-linked securities can also decline in value based on changes in the relevant periodic adjustment rate. Certain adjustable rate securities, such as those with interest rates that fluctuate directly or indirectly based on multiples of a stated index, are designed to be highly sensitive to changes in interest rates and can subject the holders thereof to extreme reductions of yield and possibly loss of principal. Certain fixed-income securities may be issued at a discount from their face value (such as zero coupon securities) or purchased at a price less than their stated face amount or at a price less than their issue price plus the portion of “original issue discount” previously accrued thereon, i.e., purchased at a “market discount.” The amount of original issue discount and/or market discount on certain obligations may be significant, and accretion of market discount together with original issue discount will cause the Portfolio to realize income prior to the receipt of cash payments with respect to these securities.

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.

Liquidity Risk. The lack of a readily available market may limit the ability of the Portfolio to sell certain securities at the time and price it would like. The size of certain debt securities offerings of emerging markets issuers may be relatively smaller in size than debt offerings in more developed markets and, in some cases, the Portfolio, by itself or together with other Portfolios or other accounts managed by the Investment Manager, may hold a position in a security that is large relative to the typical trading volume for that security; these factors can make it difficult for the Portfolio to dispose of the position at the desired time or price.

Non-Diversification Risk. The Portfolio’s NAV 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.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

Performance Bar Chart and Table

Because the Portfolio did not have a full calendar year of performance 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. Updated performance information is available at www.LazardNet.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.

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed .90%, 1.20% and .85% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard US Short Duration Fixed Income Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks total return and preservation of capital.

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 and hold shares of the Portfolio.

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

2016-05-01

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 46% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

46.00%

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

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Under normal circumstances, the Portfolio invests at least 80% of its assets in fixed-income securities of US issuers, including US government securities, corporate securities, mortgage-related and asset-backed securities, convertible securities, municipal securities, structured products, preferred stocks and inflation-indexed-securities. These securities may have any type of interest rate payment terms, including fixed rate, adjustable rate or zero coupon features. Under normal circumstances, the Portfolio’s investment portfolio can be expected to have an average effective duration of three years or less. Duration is an estimate of the sensitivity of the price (the value of principal) of a fixed-income security to a change in interest rates. Generally, the longer the duration, the higher the expected volatility. For example, the market price of a fixed-income security with a duration of three years would be expected to decline 3% if interest rates rose 1%. Conversely, the market price of the same security would be expected to increase 3% if interest rates fell 1%.

The Portfolio invests primarily in securities that are rated investment grade by one or more nationally recognized statistical rating organizations (“NRSROs”) (or, if unrated, determined by the Investment Manager to be of comparable quality).

Securities are evaluated based on their fundamental and structural characteristics. Valuation analysis is tailored to the specific asset class, but may include credit research and analysis of features such as prepayment or call options, maturity, duration and coupon.

The Portfolio may invest up to 20% of its assets in other securities which need not be fixed-income securities of US issuers.

Risk [Heading]

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Principal Investment Risks

Risk Narrative [Text Block]

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The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Adjustable rate securities provide the Portfolio with a certain degree of protection against rises in interest rates, although such securities will participate in any declines in interest rates as well. Certain adjustable rate securities, such as those with interest rates that fluctuate directly or indirectly based on multiples of a stated index, are designed to be highly sensitive to changes in interest rates and can subject the holders thereof to extreme reductions of yield and possibly loss of principal. Certain fixed-income securities may be issued at a discount from their face value (such as zero coupon securities) or purchased at a price less than their stated face amount or at a price less than their issue price plus the portion of “original issue discount” previously accrued thereon, i.e., purchased at a “market discount.” The amount of original issue discount and/or market discount on certain obligations may be significant, and accretion of market discount together with original issue discount will cause the Portfolio to realize income prior to the receipt of cash payments with respect to these securities.

Mortgage-Related and Asset-Backed Securities Risk. Mortgage-related securities are complex instruments, subject to both credit and prepayment risk, and may be more volatile and less liquid, and more difficult to price accurately, than more traditional debt securities. Mortgage- related securities generally are subject to credit risks associated with the performance of the underlying mortgage properties. Prepayment risk can lead to fluctuations in value of the mortgage-related security which may be pronounced. As with other interest-bearing securities, the prices of certain mortgage-related securities are inversely affected by changes in interest rates. However, although the value of a mortgage-related security may decline when interest rates rise, the converse is not necessarily true, since during periods of declining interest rates the mortgages underlying the security are more likely to be prepaid.

The risks of asset-backed securities are similar to those of mortgage-related securities. However, asset-backed securities present certain risks that are not presented by mortgage-related securities. Primarily, these securities may provide the Portfolio with a less effective security interest in the related collateral than do mortgage-related securities.

Structured Products Risk. Structured notes and other structured products are privately negotiated debt instruments where the principal and/or interest is determined by reference to a specified asset, market or rate, or the differential performance of two assets or markets. Structured products can have risks of both fixed-income securities and derivatives transactions. Derivatives transactions may reduce returns or increase volatility, perhaps substantially, and they are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related reference assets, markets or rates. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

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. In addition, investments denominated in currencies other than US dollars may experience 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.

Risk Lose Money [Text]

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The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Bar Chart and Performance Table [Heading]

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Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

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The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Short Duration Fixed Income Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. The bar chart shows how the performance of the Portfolio’s Institutional Shares has varied from year to year. Updated performance information is available at www.LazardNet.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.

Performance Information Illustrates Variability of Returns [Text]

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The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Short Duration Fixed Income Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance.

Performance Availability Phone [Text]

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(800) 823-6300

Performance Availability Website Address [Text]

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www.LazardNet.com

Performance Past Does Not Indicate Future [Text]

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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 Closing [Text Block]

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Best Quarter:
6/30/12 1.22%

Worst Quarter:
6/30/13 -2.24%

Highest Quarterly Return, Label

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Best Quarter:

Highest Quarterly Return, Date

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Jun. 30, 2012

Highest Quarterly Return

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1.22%

Lowest Quarterly Return, Label

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Worst Quarter:

Lowest Quarterly Return, Date

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Jun. 30, 2013

Lowest Quarterly Return

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(2.24%)

Performance Table Heading

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Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

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(reflects no deduction for fees, expenses or taxes)

Performance Table Uses Highest Federal Rate

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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

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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]

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After-tax returns are shown only for Institutional Shares. After-tax returns of the Portfolio’s other share classes will vary.

Performance Table Narrative

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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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

The Portfolio changed its investment strategy on June 28, 2013. Prior to that that date, the Portfolio invested in US municipal securities and the performance prior to June 28, 2013 reflects that investment strategy.

Bank of America Merrill Lynch 1-3 Year US Treasury Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

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1 Year

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0.62%

Life of Portfolio

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0.75%

Institutional Shares

Risk/Return:

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Management Fees

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0.25%

Distribution and Service (12b-1) Fees

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none

Other Expenses

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0.27%

Total Annual Portfolio Operating Expenses

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0.52%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.12%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

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0.40%

^[1]

Expense Example, with Redemption, 1 Year

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41

Expense Example, with Redemption, 3 Years

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155

Expense Example, with Redemption, 5 Years

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279

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

641

Annual Return 2012

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2.54%

Annual Return 2013

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(1.39%)

Annual Return 2014

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0.49%

1 Year

rr_AverageAnnualReturnYear01

0.49%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

1.56%

Inception Date

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Feb. 28, 2011

Institutional Shares | After Taxes on Distributions

Risk/Return:

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1 Year

rr_AverageAnnualReturnYear01

0.28%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

1.03%

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

0.28%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

1.02%

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Management Fees

rr_ManagementFeesOverAssets

0.25%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

17.12%

Total Annual Portfolio Operating Expenses

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17.62%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(16.92%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.70%

^[1]

Expense Example, with Redemption, 1 Year

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72

Expense Example, with Redemption, 3 Years

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3,298

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

5,761

Expense Example, with Redemption, 10 Years

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9,663

1 Year

rr_AverageAnnualReturnYear01

0.38%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

1.31%

Inception Date

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Feb. 28, 2011

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Management Fees

rr_ManagementFeesOverAssets

0.25%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.27%

^[2]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

0.52%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.17%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.35%

^[1]

Other Expenses, New Fund, Based on Estimates [Text]

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“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

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36

Expense Example, with Redemption, 3 Years

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150

Expense Example, with Redemption, 5 Years

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274

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

636

1 Year

rr_AverageAnnualReturnYear01

0.49%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

1.56%

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed .40%, .70% and .35% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Document and Entity Information	0 Months Ended
	Dec. 31, 2014
Risk/Return:
Document Type	485BPOS
Document Period End Date	Dec. 31, 2014
Registrant Name	LAZARD FUNDS INC
Central Index Key	0000874964
Amendment Flag	false
Document Creation Date	Apr. 28, 2015
Document Effective Date	May 01, 2015
Prospectus Date	May 01, 2015

XML

Lazard Emerging Markets Equity Portfolio

Lazard Emerging Markets Equity Portfolio

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard Emerging Markets Equity Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard Emerging Markets Equity Portfolio	Institutional Shares	Open Shares	R6 Shares
Management Fees	1.00%	1.00%	1.00%
Distribution and Service (12b-1) Fees	none	0.25%	none
Other Expenses	0.09%	0.12%	0.09%	[1]
Total Annual Portfolio Operating Expenses	1.09%	1.37%	1.09%

Example

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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard Emerging Markets Equity Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	111	347	601	1,329
Open Shares	139	434	750	1,646
R6 Shares	111	347	601	1,329

Portfolio Turnover

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 12% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in equity securities, principally common stocks, of non-US companies whose principal activities are located in emerging market countries and that the Investment Manager believes are undervalued based on their earnings, cash flow or asset values.

Emerging market countries include all countries represented by the MSCI Emerging Markets Index, which currently includes: Brazil, Chile, China, Colombia, Czech Republic, Egypt, Greece, Hungary, India, Indonesia, Korea, Malaysia, Mexico, Peru, Philippines, Poland, Qatar, Russia, South Africa, Taiwan, Thailand, Turkey and United Arab Emirates.

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of companies whose principal business activities are located in emerging market countries.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Emerging Markets Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. 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.LazardNet.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.

Best Quarter:
6/30/09 34.12%

Worst Quarter:
12/31/08 -30.50%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

Average Annual Returns Lazard Emerging Markets Equity Portfolio	1 Year	5 Years	10 Years	Life of Portfolio	Inception Date
Institutional Shares	(4.16%)	3.28%	9.81%	7.41%	Jul. 15, 1994
Open Shares	(4.39%)	2.97%	9.49%	7.24%	Jan. 08, 1997
R6 Shares	(4.16%)	3.28%	9.81%	7.41%
After Taxes on Distributions Institutional Shares	(4.79%)	2.70%	8.49%	6.52%
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	(1.29%)	2.95%	8.31%	6.26%
MSCI Emerging Markets Index (reflects no deduction for fees, expenses or taxes) (Institutional)	(2.19%)	1.78%	8.43%	5.63%
MSCI Emerging Markets Index (reflects no deduction for fees, expenses or taxes) (Open)	(2.19%)	1.78%	8.43%	6.33%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard Enhanced Opportunities Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks current income and long-term capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-12-31

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. Because the Portfolio commenced investment operations on December 31, 2014, no portfolio turnover information is presented.

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year.

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

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The Portfolio seeks to achieve its investment objective over a full market cycle through a hedged strategy investing primarily in convertible fixed income and preferred securities (including those rated below investment grade (“junk”)). The strategy utilizes a relative value approach, focusing on convertible securities that are considered to have low volatility. It is expected that the Portfolio will invest primarily in small and mid cap companies. The Portfolio also will utilize selective strategy level and position level hedges, primarily through short selling and derivatives, seeking to minimize macro risk (equity and credit) and interest rate risk. The Portfolio may invest in convertible debt and preferred securities of any maturity and any quality. Convertible securities held in the Portfolio generally are expected to have maturities between three and seven years at the time of investment, or between five and seven years if invested at issuance. Preferred securities generally are of perpetual maturities, callable at various points determined by the issuer. The Portfolio management team utilizes bottom up fundamental credit, equity and quantitative analysis in conjunction with top down macroeconomic analysis to identify individual securities believed to offer compelling value versus comparable risk return.

The Portfolio will generally have short positions through selling securities “short” and through investments in derivative instruments, principally swap agreements on individual securities, and may use short positions to seek to increase returns or to reduce risk. A short sale involves the sale of a security that the Portfolio does not own in the expectation of purchasing the same security (or a security exchangeable therefor) at a later date and at a lower price and profiting from the price decline. Similarly, when taking short positions with respect to securities through investments in derivative instruments, the Investment Manager is expecting the value of such securities to fall during the period of the Portfolio’s investment exposure.

Although the Portfolio’s investment focus is US companies, the Portfolio also may invest in non-US companies, including depositary receipts and shares. At certain times, based on the currently existing market environment, the Investment Manager may not believe it is able to find sufficient opportunities to invest in convertible fixed income and preferred securities and/or take short positions and may determine to tactically shift the Portfolio to invest substantially in money market instruments, such as short-term US Treasury securities and certificates of deposit.

The Portfolio may invest in ETFs and similar products, which generally pursue a passive index-based strategy.

In addition, the Portfolio may, but is not required to, enter into futures and forward currency contracts and equity, interest rate, credit default and currency swap agreements; and write put and call options on securities (including ETFs), indexes and currencies, for hedging purposes or to seek to increase returns.

It is expected that the Portfolio will buy and sell securities, and take short positions in securities, frequently in connection with implementing its investment strategy.

The Portfolio is classified as “non-diversified” under the 1940 Act, 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.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Risk Narrative [Text Block]

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The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Short Position Risk. Short positions may involve substantial risks. If a short position appreciates in value during the period of the Portfolio’s investment, there will be a loss to the Portfolio that could be substantial. Short positions involve more risk than long positions because the maximum sustainable loss on a security purchased is limited to the amount paid for the security plus the transaction costs. However, the Portfolio’s potential loss on a short position is unlimited because, theoretically, there is no limit to the potential price increase of a security.

Convertible Securities Risk. The market value of convertible securities may perform like that of non-convertible fixed income securities; that is, their prices move inversely with changes in interest rates (i.e., as interest rates go up, prices go down). In addition, convertible securities are subject to the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Since it derives a portion of its value from the common stock into which it may be converted, a convertible security also is subject to the same types of market and issuer risks that apply to the underlying common stock.

Fixed Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Some fixed income securities may give the issuer the option to call, or redeem, the securities before their maturity. If securities held by the Portfolio are called during a time of declining interest rates (which is typically the case when issuers exercise options to call outstanding securities), the Portfolio may have to reinvest the proceeds in an investment offering a lower yield (and the Portfolio may not fully benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

Adjustable rate securities provide the Portfolio with a certain degree of protection against rises in interest rates, although such securities will participate in any declines in interest rates as well. Certain adjustable rate securities, such as those with interest rates that fluctuate directly or indirectly based on multiples of a stated index, are designed to be highly sensitive to changes in interest rates and can subject the holders thereof to extreme reductions of yield and possibly loss of principal. Certain fixed income securities may be issued at a discount from their face value (such as zero coupon securities) or purchased at a price less than their stated face amount or at a price less than their issue price plus the portion of “original issue discount” previously accrued thereon, i.e., purchased at a “market discount.” The amount of original issue discount and/or market discount on certain obligations may be significant, and accretion of market discount together with original issue discount will cause the Portfolio to realize income prior to the receipt of cash payments with respect to these securities.

Preferred Securities Risk. There are various risks associated with investing in preferred securities. In addition, unlike common stock, participation in the growth of an issuer may be limited.

• Credit risk is the risk that a security held by the Portfolio will decline in price or the issuer of the security will fail to make dividend, interest or principal payments when due because the issuer experiences a decline in its financial status.

• Interest rate risk is the risk that securities will decline in value because of changes in market interest rates. When market interest rates rise, the market value of such securities generally will fall.

• Preferred securities may include provisions that permit the issuer, at its discretion, to defer or omit distributions for a stated period without any adverse consequences to the issuer.

• Preferred securities are generally subordinated to bonds and other debt instruments in an issuer’s capital structure in terms of having priority to corporate income, claims to corporate assets and liquidation payments, and therefore will be subject to greater credit risk than more senior debt instruments.

• During periods of declining interest rates, an issuer may be able to exercise an option to call, or redeem, its issue at par earlier than the scheduled maturity. If this occurs during a time of lower or declining interest rates, the Portfolio may have to reinvest the proceeds in lower yielding securities (and the Portfolio may not benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

Swap Agreements and Other Derivatives Risk. Swap agreements and other derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Over-the-counter swap agreements, forward currency contracts, over-the-counter options on securities (including options on ETFs), indexes and currencies and other over-the-counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. These derivatives transactions, as well as the exchange-traded futures and options in which the Portfolio may invest, are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related security, interest rate, index, commodity, currency or other reference asset. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions, even when entered into for hedging purposes, may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

Counterparty Credit Risk. The Portfolio’s investment strategy is dependent on counterparties to its securities borrowing transactions in connection with short sales of securities and counterparties to derivatives transactions. Transactions with such counterparties are subject to the risk of default by a counterparty, which could result in a loss of Portfolio assets used as collateral or the loss of monies owed to the Portfolio by a counterparty.

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.

Leverage Risk. The use of leverage, which the Portfolio’s strategy entails, may magnify the Portfolio’s gains or losses.

Value Investing Risk. The Portfolio invests in securities believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The securities in which the Portfolio invests may respond differently to market and other developments than other types of securities.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

Market Direction Risk. Since the Portfolio will typically hold both long and short positions, an investment in the Portfolio will involve market risks associated with different types of investment decisions than those made for a typical “long only” fund. The Portfolio’s results will suffer both when there is a general market advance and the Portfolio holds significant “short” positions, or when there is a general market decline and the Portfolio holds significant “long” positions. In recent years, the markets have shown considerable volatility from day to day and even in intra-day trading.

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.

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.

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 Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Non-Diversification Risk. The Portfolio’s NAV 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.

ETF Risk. Shares of ETFs may trade at prices that vary from their NAVs, sometimes significantly. The shares of ETFs may trade at prices at, below or above their most recent NAV. In addition, the performance of an ETF pursuing a passive index-based strategy may diverge from the performance of the index. The Portfolio’s investments in ETFs are subject to the risks of such ETF’s investments, as well as to the general risks of investing in ETFs. Portfolio shares will bear not only the Portfolio’s management fees and operating expenses, but also their proportional share of the management fees and operating expenses of the ETFs in which the Portfolio invests. The Portfolio may be limited by the 1940 Act in the amount of its assets that may be invested in ETFs unless an ETF has received an exemptive order from the SEC on which the Portfolio may rely or an exemption is available.

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.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in high transaction costs and an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

Risk Lose Money [Text]

rr_RiskLoseMoney

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Risk Nondiversified Status [Text]

rr_RiskNondiversifiedStatus

The Portfolio’s NAV 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.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Bar Chart and Table

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

Because the Portfolio did not have a full calendar year of performance 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. Updated performance information is available at www.LazardNet.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.

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 did not have a full calendar year of performance 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.LazardNet.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.

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.40%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.28%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.68%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.68%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

171

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

530

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.40%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.28%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.93%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.93%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

196

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

606

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.40%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.28%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.68%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.03%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.65%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

168

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

525

[1] "Other Expenses" are based on estimated amounts for the current fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through December 31, 2016 to the extent Total Annual Portfolio Operating Expenses exceed 1.70%, 1.95% and 1.65% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, dividend and interest expenses on securities sold short, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

XML

Lazard US Small-Mid Cap Equity Portfolio

Lazard US Small-Mid Cap Equity Portfolio

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard US Small-Mid Cap Equity Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard US Small-Mid Cap Equity Portfolio	Institutional Shares	Open Shares	R6 Shares
Management Fees	0.75%	0.75%	0.75%
Distribution and Service (12b-1) Fees	none	0.25%	none
Other Expenses	0.11%	0.20%	0.11%	[1]
Total Annual Portfolio Operating Expenses	0.86%	1.20%	0.86%

Example

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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard US Small-Mid Cap Equity Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	88	274	477	1,061
Open Shares	122	381	660	1,455
R6 Shares	88	274	477	1,061

Portfolio Turnover

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 91% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in equity securities, principally common stocks, of small to mid cap US companies. The Investment Manager considers “small-mid cap companies” to be those companies that, at the time of initial purchase by the Portfolio, have market capitalizations within the range of companies included in the Russell 2500^® Index (ranging from approximately $4.4 million to $19.6 billion as of April 9, 2015).

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of small-mid cap US companies. The Investment Manager focuses on relative value in seeking to construct a diversified portfolio of investments for the Portfolio that maintains sector and industry balance, using investment opportunities identified through bottom-up fundamental research conducted by the Investment Manager’s small cap, mid cap and global research analysts.

The Portfolio may invest up to 20% of its assets in the securities of larger or smaller US or non-US companies.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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. 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.

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Small-Mid Cap Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. 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.LazardNet.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.

Best Quarter:
6/30/09 28.30%

Worst Quarter:
9/30/11 -26.02%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

The Russell 2000/2500 Linked Index shown in the table is an unmanaged index created by the Investment Manager, which links the performance of the Russell 2000® Index for all periods through August 24, 2008 (when the Portfolio’s investment focus was changed from small cap companies to small-mid cap companies) and the Russell 2500 Index for all periods thereafter.

Average Annual Returns Lazard US Small-Mid Cap Equity Portfolio	1 Year	5 Years	10 Years	Life of Portfolio	Inception Date
Institutional Shares	11.39%	14.26%	8.54%	11.37%	Oct. 30, 1991
Open Shares	11.01%	13.91%	8.20%	8.54%	Jan. 30, 1997
R6 Shares	11.39%	14.26%	8.54%	11.37%
After Taxes on Distributions Institutional Shares	4.34%	11.30%	5.85%	8.83%
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	9.72%	10.71%	6.24%	8.84%
Russell 2500 Index (reflects no deduction for fees, expenses or taxes) (Institutional)	7.07%	16.36%	8.72%	11.27%
Russell 2500 Index (reflects no deduction for fees, expenses or taxes) (Open)	7.07%	16.36%	8.72%	9.63%
Russell 2000/2500 Linked Index (reflects no deduction for fees, expenses or taxes) (Institutional)	7.07%	16.36%	8.46%	10.27%
Russell 2000/2500 Linked Index (reflects no deduction for fees, expenses or taxes) (Open)	7.07%	16.36%	8.46%	8.61%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard US Strategic Equity Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks long-term capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-05-01

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.

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

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 that the Investment Manager believes have strong and/or improving financial productivity and are undervalued based on their earnings, cash flow or asset values. Although the Portfolio generally focuses on large cap companies, the market capitalizations of issuers in which the Portfolio invests may vary with market conditions and the Portfolio also may invest in mid cap and small cap companies.

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.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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.

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.

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. 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.

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 Year-by-Year Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Strategic Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. 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.LazardNet.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.

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 Strategic Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:
6/30/09 16.46%

Worst Quarter:
12/31/08 -23.06%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

16.46%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(23.06%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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.

S&P 500 Index (reflects no deduction for fees, expenses or taxes) (Institutional)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.68%

5 Years

rr_AverageAnnualReturnYear05

15.45%

10 Years

rr_AverageAnnualReturnYear10

7.67%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

7.65%

S&P 500 Index (reflects no deduction for fees, expenses or taxes) (Open)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.68%

5 Years

rr_AverageAnnualReturnYear05

15.45%

10 Years

rr_AverageAnnualReturnYear10

7.67%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

7.65%

S&P 500 Index (reflects no deduction for fees, expenses or taxes) (R6)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.68%

5 Years

rr_AverageAnnualReturnYear05

15.45%

10 Years

rr_AverageAnnualReturnYear10

7.67%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

10.94%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.70%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.20%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

0.90%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.15%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.75%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

77

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

272

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

484

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,094

Annual Return 2005

rr_AnnualReturn2005

4.99%

Annual Return 2006

rr_AnnualReturn2006

17.44%

Annual Return 2007

rr_AnnualReturn2007

0.33%

Annual Return 2008

rr_AnnualReturn2008

(35.43%)

Annual Return 2009

rr_AnnualReturn2009

28.12%

Annual Return 2010

rr_AnnualReturn2010

13.13%

Annual Return 2011

rr_AnnualReturn2011

1.65%

Annual Return 2012

rr_AnnualReturn2012

14.56%

Annual Return 2013

rr_AnnualReturn2013

28.38%

Annual Return 2014

rr_AnnualReturn2014

15.04%

1 Year

rr_AverageAnnualReturnYear01

15.04%

5 Years

rr_AverageAnnualReturnYear05

14.24%

10 Years

rr_AverageAnnualReturnYear10

7.13%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

7.13%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 30, 2004

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

11.02%

5 Years

rr_AverageAnnualReturnYear05

13.08%

10 Years

rr_AverageAnnualReturnYear10

6.08%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

6.08%

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

5.64%

5 Years

rr_AverageAnnualReturnYear05

11.30%

10 Years

rr_AverageAnnualReturnYear10

11.38%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

5.64%

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.70%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.36%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.31%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.26%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.05%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

107

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

390

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

693

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,556

1 Year

rr_AverageAnnualReturnYear01

14.77%

5 Years

rr_AverageAnnualReturnYear05

13.91%

10 Years

rr_AverageAnnualReturnYear10

6.82%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

6.82%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 30, 2004

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.70%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.36%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.06%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.36%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.70%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

72

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

301

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

550

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,262

Life of Portfolio

rr_AverageAnnualReturnSinceInception

12.23%

Inception Date

rr_AverageAnnualReturnInceptionDate

May 19, 2014

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed .75%, 1.05% and .70% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard International Strategic Equity Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks long-term capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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 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 33% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

33.00%

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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Portfolio invests primarily in equity securities, principally common stocks, of non-US companies whose principal activities are located in countries represented by the MSCI EAFE Index that the Investment Manager believes are undervalued based on their earnings, cash flow or asset values. The Portfolio also may invest up to 15% of its assets in securities of companies whose principal business activities are located in emerging market countries, although the allocation of the Portfolio’s assets to emerging market countries may vary from time to time.

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities.

The countries represented by the MSCI EAFE Index currently include: Australia, Austria, Belgium, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland and the United Kingdom.

Although the Portfolio is classified as “diversified” under the 1940 Act, it may invest in a smaller number of issuers than other, more diversified investment portfolios.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Focused Investing Risk. The Portfolio’s NAV 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.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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.

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 Year-by-Year Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard International Strategic Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. The bar chart shows how the performance of the Portfolio’s Institutional Shares has varied from year to year. Updated performance information is available at www.LazardNet.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.

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 International Strategic Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:
6/30/09 23.21%

Worst Quarter:
9/30/11 -19.36%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

23.21%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(19.36%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

MSCI EAFE Index (reflects no deduction for fees, expenses or taxes) (Institutional)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(4.90%)

5 Years

rr_AverageAnnualReturnYear05

5.33%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

4.19%

MSCI EAFE Index (reflects no deduction for fees, expenses or taxes) (Open)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(4.90%)

5 Years

rr_AverageAnnualReturnYear05

5.33%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

2.81%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.09%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

0.84%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

86

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

268

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

466

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,037

Annual Return 2006

rr_AnnualReturn2006

26.22%

Annual Return 2007

rr_AnnualReturn2007

12.88%

Annual Return 2008

rr_AnnualReturn2008

(39.98%)

Annual Return 2009

rr_AnnualReturn2009

27.76%

Annual Return 2010

rr_AnnualReturn2010

14.43%

Annual Return 2011

rr_AnnualReturn2011

(9.70%)

Annual Return 2012

rr_AnnualReturn2012

25.00%

Annual Return 2013

rr_AnnualReturn2013

25.02%

Annual Return 2014

rr_AnnualReturn2014

(1.48%)

1 Year

rr_AverageAnnualReturnYear01

(1.48%)

5 Years

rr_AverageAnnualReturnYear05

9.73%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

7.10%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 31, 2005

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(2.24%)

5 Years

rr_AverageAnnualReturnYear05

9.44%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

6.58%

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

0.01%

5 Years

rr_AverageAnnualReturnYear05

7.83%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

5.89%

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.09%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.09%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

111

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

347

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

601

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,329

1 Year

rr_AverageAnnualReturnYear01

(1.78%)

5 Years

rr_AverageAnnualReturnYear05

9.43%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

5.30%

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 03, 2006

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.09%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

0.84%

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

86

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

268

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

466

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,037

1 Year

rr_AverageAnnualReturnYear01

(1.48%)

5 Years

rr_AverageAnnualReturnYear05

9.73%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

7.10%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Lazard US Realty Income Portfolio

Lazard US Realty Income Portfolio

Investment Objectives

The Portfolio’s primary investment objective is current income,

with long-term capital appreciation as a secondary objective.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard US Realty Income Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard US Realty Income Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		0.75%	0.75%	0.75%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		0.21%	0.24%	0.21%	[1]
Total Annual Portfolio Operating Expenses		0.96%	1.24%	0.96%
Fee Waiver and Expense Reimbursement	[2]			0.01%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	0.96%	1.24%	0.95%

Example

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard US Realty Income Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	98	306	531	1,178
Open Shares	126	393	681	1,500
R6 Shares	97	305	530	1,177

Portfolio Turnover

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 53% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Portfolio invests at least 80% of its assets in dividend-paying common and preferred stocks, convertible securities and fixed income securities of US Realty Companies (defined below), as well as certain synthetic instruments related to US Realty Companies. Such synthetic instruments are investments that have economic characteristics similar to the Portfolio’s direct investments in US Realty Companies and may include warrants, rights, options and shares of exchange-traded funds (“ETFs”).

The Investment Manager focuses on investments having the potential to deliver regular income and to offer the opportunity for long-term growth and capital appreciation. The Investment Manager conducts proprietary quantitative, qualitative and on-site real estate analysis to select the Portfolio’s investments, which may include, as appropriate, research at the macroeconomic, sector, company and property level. The Investment Manager’s individual company research may consider a number of quantitative measures, including earnings growth potential, price to earnings or free cash flow multiples, price to NAV ratios, dividend yield and potential for growth, return on equity and return on assets, as well as qualitative factors such as overall business and growth strategy and quality of management.

“Realty Companies” are real estate-related companies of any size including, but not limited to, real estate investment trusts (“REITs”), real estate operating or service companies and companies in the homebuilding, lodging and hotel industries, as well as companies engaged in the natural resources and utility industries, and other companies whose investments, balance sheets or income statements are real estate-intensive (i.e., the company’s actual or anticipated revenues, profits, assets, services or products are related to real estate including, but not limited to, the ownership, renting, leasing, construction, management, development or financing of commercial, industrial or residential real estate).

The Portfolio’s investments in preferred stock and convertible and fixed income securities may include securities which, at the time of purchase, are rated below “investment grade” by an NRSRO, or the unrated equivalent as determined by the Investment Manager (“junk bonds”).

The Portfolio may invest in issuers of any market capitalization and securities of any maturity, and the Portfolio’s investments also may include securities purchased in initial public offerings (“IPOs”).

The Portfolio also may invest up to 25% of its net assets in companies organized as master limited partnerships (“MLPs”) and their affiliates.

The Portfolio also may invest up to 20% of its assets in other securities and instruments of companies or entities (which need not be US Realty Companies), including, but not limited to, securities of non-US companies and other investment companies.

In addition to purchasing options, the Portfolio may, but is not required to, write put and covered call options on securities and indexes, for hedging purposes or to seek to increase returns.

Although the Portfolio is classified as “diversified” under the 1940 Act, it may invest in a smaller number of issuers than other, more diversified, investment portfolios.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Realty Companies Risk. Since the Portfolio focuses its investments in Realty Companies, the Portfolio could lose money due to the performance of real estate-related securities even if securities markets generally are experiencing positive results. The performance of investments made by the Portfolio may be determined to a great extent by the current status of the real estate industry in general, or by other factors (such as interest rates and the availability of loan capital) that may affect the real estate industry, even if other industries would not be so affected. Consequently, the investment strategies of the Portfolio could lead to securities investment results that may be significantly different from investments in securities of other industries or sectors or in a more broad-based portfolio generally.

The risks related to investments in Realty Companies include, but are not limited to: adverse changes in general economic and local market conditions; adverse developments in employment; changes in supply or demand for similar or competing properties; unfavorable changes in applicable taxes, governmental regulations and interest rates; operating or development expenses; and lack of available financing. Due to certain special considerations that apply to REITs, investments in REITs may carry additional risks not necessarily present in investments in other securities. REIT securities (including those trading on national exchanges) typically have trading volumes that are less than those of common stocks of non-Realty Companies traded on national exchanges, which may affect a Portfolio’s ability to trade or liquidate those securities. An investment in REITs may be adversely affected if the REIT fails to comply with applicable laws and regulations, including failing to qualify as a REIT under the Internal Revenue Code of 1986, as amended (the “Code”). Failure to qualify with any of these requirements could jeopardize a company’s status as a REIT. The Portfolio generally will have no control over the operations and policies of a REIT, and the Portfolio generally will have no ability to cause a REIT to take the actions necessary to qualify as a REIT.

Small and Mid Cap Companies Risk. Many Realty Companies are small and mid cap companies, which 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 securities 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.

Preferred Securities Risk. There are various risks associated with investing in preferred securities. In addition, unlike common stock, participation in the growth of an issuer may be limited.

• Credit risk is the risk that a security held by the Portfolio will decline in price or the issuer of the security will fail to make dividend, interest or principal payments when due because the issuer experiences a decline in its financial status.

• Interest rate risk is the risk that securities will decline in value because of changes in market interest rates. When market interest rates rise, the market value of such securities generally will fall.

• Preferred securities may include provisions that permit the issuer, at its discretion, to defer or omit distributions for a stated period without any adverse consequences to the issuer.

• Preferred securities are generally subordinated to bonds and other debt instruments in an issuer’s capital structure in terms of having priority to corporate income, claims to corporate assets and liquidation payments, and therefore will be subject to greater credit risk than more senior debt instruments.

• During periods of declining interest rates, an issuer may be able to exercise an option to call, or redeem its issue at par earlier than the scheduled maturity. If this occurs during a time of lower or declining interest rates, the Portfolio may have to reinvest the proceeds in lower yielding securities (and the Portfolio may not benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

• Certain preferred securities may be substantially less liquid than many other securities, such as common stocks or US Government securities. Illiquid securities involve the risk that the securities will not be able to be sold at the time desired by the Portfolio or at prices approximating the value at which the Portfolio is carrying the securities on its books.

Other Equity Securities Risks. The market value of a convertible security tends to perform like that of a regular debt security so that, if market interest rates rise, the value of the convertible security falls. Investments in rights and warrants involve certain risks, including the possible lack of a liquid market for resale, price fluctuations and the failure of the price of the underlying security to reach a level at which the right or warrant can be prudently exercised, in which case the right or warrant may expire without being exercised and result in a loss of the Portfolio’s entire investment.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities “junk bond”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non- investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

MLP Risk. An investment in MLP units involves some risks that differ from an investment in the common stock of a corporation. Investing in MLPs involves certain risks related to investing in the underlying assets of the MLPs and risks associated with pooled investment vehicles. MLPs holding credit-related investments are subject to interest rate risk and the risk of default on payment obligations by debt issuers.

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. 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.

Focused Investing Risk. The Portfolio’s NAV 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.

Options Risk. Writing options on securities and indexes, including for hedging purposes, may reduce returns or increase volatility, perhaps substantially, and may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions. Writing options is subject to many of the risks of, and can be highly sensitive to changes in the value of, the related security or index. As such, a small commitment to written options could potentially have a relatively large impact on the Portfolio’s performance. Purchasing options will reduce returns by the amount of premiums paid for options that are not exercised. Over-the-counter options purchased on securities and indexes are subject to the risk of default by the counterparty and can be illiquid.

Investment Companies and ETF Risk. Any investments in other investment companies and ETFs are subject to the risks of the investments of the investment companies and ETFs, as well as to the general risks of investing in investment companies and ETFs. Portfolio shares will bear not only the Portfolio’s management fees and operating expenses, but also their proportional share of the management fees and operating expenses of any other investment companies and ETFs in which the Portfolio invests.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in high transaction costs and an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

Performance Bar Chart and Table Year-by-Year Total Returns for Open Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Realty Income 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 Portfolio commenced operations after all of the assets of an investment company advised by Grubb & Ellis Alesco Global Advisors, LLC (“Alesco”), Grubb & Ellis AGA Realty Income Fund (the “Predecessor Realty Income Fund”), were transferred to the Portfolio in exchange for Open Shares of the Portfolio in a tax-free reorganization on September 23, 2011. The bar chart shows how the performance of the Portfolio’s Open Shares (or the Predecessor Realty Income Fund’s Class A shares, prior to September 23, 2011) has varied from year to year. Updated performance information is available at www.LazardNet.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.

Best Quarter:
6/30/09 40.10%

Worst Quarter:
3/31/09 -13.67%

Average Annual Total Returns (for the periods ended December 31, 2014)

After-tax returns are shown only for Open 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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

The 50% FTSE NAREIT All Equity REITs® Index/50% Wells Fargo Hybrid and Preferred Securities REIT® Index shown in the table is an unmanaged index created by the Investment Manager, and is a 50/50 blend of the FTSE NAREIT All Equity REITs Index and the Wells Fargo Hybrid and Preferred Securities REIT Index.

Average Annual Returns Lazard US Realty Income Portfolio	1 Year	5 Years	Life of Portfolio	Inception Date
Open Shares	21.35%	15.14%	13.10%	Jul. 30, 2008
Institutional Shares	21.54%		17.29%	Sep. 26, 2011
R6 Shares	21.54%		17.29%
After Taxes on Distributions Open Shares	17.99%	9.92%	8.51%
After Taxes on Distributions and Sale of Portfolio Shares Open Shares	12.30%	10.24%	8.77%
FTSE NAREIT All Equity REITs Index (reflects no deduction for fees, expenses or taxes) (Open)	28.03%	16.91%	8.82%
FTSE NAREIT All Equity REITs Index (reflects no deduction for fees, expenses or taxes) (Institutional)	28.03%	16.91%	19.46%
Wells Fargo Hybrid and Preferred Securities REIT Index (reflects no deduction for fees, expenses or taxes) (Open)	20.37%	11.32%	12.84%
Wells Fargo Hybrid and Preferred Securities REIT Index (reflects no deduction for fees, expenses or taxes) (Institutional)	20.37%	11.32%	8.83%
50% FTSE NAREIT All Equity REITs Index/50% Wells Fargo Hybrid and Preferred Securities REIT Index (reflects no deduction for fees, expenses or taxes) (Open)	24.31%	14.36%	11.44%
50% FTSE NAREIT All Equity REITs Index/50% Wells Fargo Hybrid and Preferred Securities REIT Index (reflects no deduction for fees, expenses or taxes) (Institutional)	24.31%	14.36%	14.27%
S&P 500 Index (reflects no deductions for fees, expenses or taxes) (Open)	13.68%	15.45%	10.02%
S&P 500 Index (reflects no deductions for fees, expenses or taxes) (Institutional)	13.68%	15.45%	22.56%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.00%, 1.30% and .95% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

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Risk/Return:

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Risk/Return [Heading]

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Lazard Global Realty Equity Portfolio

Objective [Heading]

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Investment Objectives

Objective, Primary [Text Block]

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The Portfolio’s primary investment objective is long-term capital appreciation,

Objective, Secondary [Text Block]

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with current income, including interest and dividends from portfolio securities, as a secondary objective.

Expense [Heading]

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Fees and Expenses

Expense Narrative [Text Block]

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This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

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Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

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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

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2016-05-01

Portfolio Turnover [Heading]

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Portfolio Turnover

Portfolio Turnover [Text Block]

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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 84% of the average value of its portfolio.

Portfolio Turnover, Rate

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84.00%

Expenses Restated to Reflect Current [Text]

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The Management Fee has been restated to reflect the current fee.

Expense Example [Heading]

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Example

Expense Example Narrative [Text Block]

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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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

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Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities (including common, convertible and preferred stocks) of Realty Companies (defined below), as well as certain synthetic instruments relating to Realty Companies. Such synthetic instruments are investments that have economic characteristics similar to the Portfolio’s direct investments in Realty Companies and may include depositary receipts, including ADRs, GDRs and European Depositary Receipts, warrants, rights, options and shares of ETFs. The Portfolio’s investments in non-US companies may include companies whose principal business activities are located in emerging market countries.

In addition, under normal market conditions the Portfolio invests significantly (at least 40%—unless market conditions are not deemed favorable by the Investment Manager, in which case the Portfolio would invest at least 30%) in non-US companies. The Investment Manager will allocate the Portfolio’s assets among various regions and countries, including the United States (but in no less than three different countries).

The Investment Manager conducts proprietary quantitative, qualitative and on-site real estate analysis to select the Portfolio’s investments, which may include, as appropriate, research at the macroeconomic, sector, company and property level. The Investment Manager’s individual company research may consider a number of quantitative measures, including earnings growth potential, price to earnings or free cash flow multiples, price to NAV ratios, dividend yield and potential for growth, return on equity and return on assets, as well as qualitative factors such as overall business and growth strategy and quality of management.

“Realty Companies” are real estate-related companies of any size including, but not limited to, REITs, real estate operating or service companies and companies in the homebuilding, lodging and hotel industries, as well as companies engaged in the natural resources and utility industries, and other companies whose investments, balance sheets or income statements are real estate-intensive (i.e., the company’s actual or anticipated revenues, profits, assets, services or products are related to real estate including, but not limited to, the ownership, renting, leasing, construction, management, development or financing of commercial, industrial or residential real estate).

The Portfolio may invest in issuers of any market capitalization and securities of any maturity, and the Portfolio’s investments also may include securities purchased in IPOs.

The Portfolio also may invest up to 20% of its assets in equity and fixed income securities and instruments of companies or entities (which need not be Realty Companies), including, but not limited to, other investment companies.

The Portfolio’s investments in preferred stock and convertible securities may include securities which, at the time of purchase, are rated below “investment grade” by an NRSRO, or the unrated equivalent as determined by the Investment Manager (“junk bonds”).

In addition to purchasing options, the Portfolio may, but is not required to, write put and covered call options on securities and indexes, for hedging purposes or to seek to increase returns.

The Portfolio is classified as “non-diversified” under the 1940 Act, 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.

Risk [Heading]

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Principal Investment Risks

Risk Narrative [Text Block]

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The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Other Equity Securities Risk. Preferred stock is subject to credit and interest rate risk and the risk that the dividend on the stock may be changed or omitted by the issuer and, unlike common stock, participation in the growth of an issuer may be limited. The market value of a convertible security tends to perform like that of a regular debt security so that, if market interest rates rise, the value of the convertible security falls. Investments in warrants involve certain risks, including the possible lack of a liquid market for resale, price fluctuations and the failure of the price of the underlying security to reach a level at which the warrant can be prudently exercised, in which case the warrant may expire without being exercised and result in a loss of the Portfolio’s entire investment.

Realty Companies Risk. Since the Portfolio focuses its investments in Realty Companies, the Portfolio could lose money due to the performance of real estate-related securities even if securities markets generally are experiencing positive results. The performance of investments made by the Portfolio may be determined to a great extent by the current status of the real estate industry in general, or by other factors (such as interest rates and the availability of loan capital) that may affect the real estate industry, even if other industries would not be so affected. Consequently, the investment strategies of the Portfolio could lead to securities investment results that may be significantly different from investments in securities of other industries or sectors or in a more broad-based portfolio generally.

The risks related to investments in Realty Companies include, but are not limited to: adverse changes in general economic and local market conditions; adverse developments in employment; changes in supply or demand for similar or competing properties; unfavorable changes in applicable taxes, governmental regulations and interest rates; operating or development expenses; and lack of available financing.

Due to certain special considerations that apply to REITs, investments in REITs may carry additional risks not necessarily present in investments in other securities. REIT securities (including those trading on national exchanges) typically have trading volumes that are less than those of common stocks of non-Realty Companies traded on national exchanges, which may affect a Portfolio’s ability to trade or liquidate those securities. An investment in REITs may be adversely affected if the REIT fails to comply with applicable laws and regulations, including failing to qualify as a REIT under the Code. Failure to qualify with any of these requirements could jeopardize a company’s status as a REIT. The Portfolio generally will have no control over the operations and policies of a REIT, and the Portfolio generally will have no ability to cause a REIT to take the actions necessary to qualify as a REIT.

Small and Mid Cap Companies Risk. Many Realty Companies are small and mid cap companies, which 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 securities 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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Non-Diversification Risk. The Portfolio’s NAV 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.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Options Risk. Writing options on securities and indexes, including for hedging purposes, may reduce returns or increase volatility, perhaps substantially, and may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions. Writing options is subject to many of the risks of, and can be highly sensitive to changes in the value of, the related security or index. As such, a small commitment to written options could potentially have a relatively large impact on the Portfolio’s performance. Purchasing options will reduce returns by the amount of premiums paid for options that are not exercised. Over-the-counter options purchased on securities and indexes are subject to the risk of default by the counterparty and can be illiquid.

Investment Companies and ETF Risk. Any investments in other investment companies and ETFs are subject to the risks of the investments of the investment companies and ETFs, as well as to the general risks of investing in investment companies and ETFs. Portfolio shares will bear not only the Portfolio’s management fees and operating expenses, but also their proportional share of the management fees and operating expenses of the other investment companies and ETFs in which the Portfolio invests.

Risk Lose Money [Text]

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The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Risk Nondiversified Status [Text]

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The Portfolio’s NAV 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.

Bar Chart and Performance Table [Heading]

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Performance Bar Chart and Table Year-by-Year Total Returns for Open Shares As of 12/31

Performance Narrative [Text Block]

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The accompanying bar chart and table provide some indication of the risks of investing in Lazard Global Realty Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. The Portfolio commenced operations after all of the assets of an investment company advised by Alesco, Grubb & Ellis AGA International Realty Fund (the “Predecessor International Realty Fund”), were transferred to the Portfolio in exchange for Open Shares of the Portfolio in a tax- free reorganization on September 23, 2011. The bar chart shows how the performance of the Portfolio’s Open Shares (or the Predecessor International Realty Fund’s Class A shares, prior to September 23, 2011) has varied from year to year. Updated performance information is available at www.LazardNet.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.

Performance Information Illustrates Variability of Returns [Text]

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The accompanying bar chart and table provide some indication of the risks of investing in Lazard Global Realty Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance.

Performance Additional Market Index [Text]

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The FTSE EPRA/NAREIT Global ex-US/FTSE EPRA/NAREIT Global Linked Index shown in the table is an unmanaged index created by the Investment Manager, which links the performance of the FTSE EPRA/NAREIT Global ex-US Index for all periods through August 15, 2013 (when the Portfolio’s investment strategy changed from investing primarily in non-US Realty Companies to a global approach) and the FTSE EPRA/NAREIT Global Index for all periods thereafter.

Performance Availability Phone [Text]

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(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

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Best Quarter:
6/30/09 31.31%

Worst Quarter:
9/30/11 -22.48%

Highest Quarterly Return, Label

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Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

31.31%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(22.48%)

Performance Table Heading

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Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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 Open Shares. After-tax returns of the Portfolio’s other share classes will vary.

Performance Table Narrative

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After-tax returns are shown only for Open 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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

The FTSE EPRA/NAREIT Global ex-US/FTSE EPRA/NAREIT Global Linked Index shown in the table is an unmanaged index created by the Investment Manager, which links the performance of the FTSE EPRA/NAREIT Global ex-US Index for all periods through August 15, 2013 (when the Portfolio’s investment strategy changed from investing primarily in non-US Realty Companies to a global approach) and the FTSE EPRA/NAREIT Global Index for all periods thereafter.

FTSE EPRA/NAREIT Global Index (reflects no reduction for fees, expenses or taxes) (Open)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.91%

5 Years

rr_AverageAnnualReturnYear05

10.20%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

14.71%

FTSE EPRA/NAREIT Global Index (reflects no reduction for fees, expenses or taxes) (Institutional)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.91%

5 Years

rr_AverageAnnualReturnYear05

10.20%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

15.12%

FTSE EPRA/NAREIT Global ex-US/FTSE/NAREIT Global Linked Index (reflects no deduction for fees, expenses or taxes) (Open)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.92%

5 Years

rr_AverageAnnualReturnYear05

8.83%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

14.66%

FTSE EPRA/NAREIT Global ex-US/FTSE/NAREIT Global Linked Index (reflects no deduction for fees, expenses or taxes)(Institutional)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.92%

5 Years

rr_AverageAnnualReturnYear05

8.83%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

15.91%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.85%

^[1]

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

2.94%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

3.79%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(2.69%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.10%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

112

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

909

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,726

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

3,855

1 Year

rr_AverageAnnualReturnYear01

10.35%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

15.86%

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 26, 2011

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.85%

^[1]

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

3.16%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

4.26%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(2.86%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.40%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

143

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,032

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,934

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

4,249

Annual Return 2009

rr_AnnualReturn2009

89.06%

Annual Return 2010

rr_AnnualReturn2010

11.46%

Annual Return 2011

rr_AnnualReturn2011

(20.35%)

Annual Return 2012

rr_AnnualReturn2012

44.81%

Annual Return 2013

rr_AnnualReturn2013

0.60%

Annual Return 2014

rr_AnnualReturn2014

10.05%

1 Year

rr_AverageAnnualReturnYear01

10.05%

5 Years

rr_AverageAnnualReturnYear05

7.31%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

17.93%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2008

Open Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

5.25%

5 Years

rr_AverageAnnualReturnYear05

4.51%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

14.64%

Open Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

6.21%

5 Years

rr_AverageAnnualReturnYear05

4.76%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

13.57%

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.85%

^[1]

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

2.94%

^[3]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

3.79%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(2.74%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.05%

^[2]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

107

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

905

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,721

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

3,852

1 Year

rr_AverageAnnualReturnYear01

10.35%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

15.86%

[1] The Management Fee has been restated to reflect the current fee.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.10%, 1.40% and 1.05% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio. Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement have been restated to reflect the current fee waiver and expense limitation arrangement.

[3] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

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Lazard US Mid Cap Equity Portfolio

Lazard US Mid Cap Equity Portfolio

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard US Mid Cap Equity Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard US Mid Cap Equity Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		0.75%	0.75%	0.75%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		0.70%	0.57%	0.70%	[1]
Total Annual Portfolio Operating Expenses		1.45%	1.57%	1.45%
Fee Waiver and Expense Reimbursement	[2]	0.40%	0.22%	0.45%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	1.05%	1.35%	1.00%

Example

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard US Mid Cap Equity Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	107	419	754	1,701
Open Shares	137	474	834	1,849
R6 Shares	102	414	749	1,697

Portfolio Turnover

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 95% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in a focused portfolio of equity securities, principally common stocks, of mid cap US companies that the Investment Manager believes have strong and/or improving financial productivity and are undervalued based on their earnings, cash flow or asset values. The Investment Manager considers “mid cap companies” to be those companies that, at the time of initial purchase by the Portfolio, have market capitalizations within the range of companies included in the Russell Midcap^® Index (ranging from approximately $220.9 million to $37.8 billion as of April 9, 2015).

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of medium-size (mid cap) US companies. The Portfolio may invest up to 20% of its assets in equity securities of larger or smaller US or non-US companies.

Although the Portfolio is classified as “diversified” under the 1940 Act, it may invest in a smaller number of issuers than other, more diversified investment portfolios.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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. 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.

Focused Investing Risk. The Portfolio’s NAV 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.

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Mid Cap Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. 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.LazardNet.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.

Best Quarter:
6/30/09 21.18%

Worst Quarter:
12/31/08 -26.54%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

Average Annual Returns Lazard US Mid Cap Equity Portfolio	1 Year	5 Years	10 Years	Life of Portfolio	Inception Date
Institutional Shares	14.35%	13.38%	6.87%	8.59%	Nov. 04, 1997
Open Shares	13.94%	13.04%	6.57%	8.28%	Nov. 04, 1997
R6 Shares	14.35%	13.38%	6.87%	8.59%
After Taxes on Distributions Institutional Shares	14.20%	13.28%	6.19%	7.21%
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	8.22%	10.74%	5.39%	6.54%
Russell Midcap Index (reflects no deduction for fees, expenses or taxes)	13.22%	17.19%	9.56%	9.60%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.05%, 1.35% and 1.00% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

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Lazard US Realty Equity Portfolio

Lazard US Realty Equity Portfolio

Investment Objectives

The Portfolio’s primary investment objective is long-term capital appreciation,

with current income, including interest and dividends from portfolio securities, as a secondary objective.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard US Realty Equity Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard US Realty Equity Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		0.80%	0.80%	0.80%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		0.38%	0.37%	0.38%	[1]
Total Annual Portfolio Operating Expenses		1.18%	1.42%	1.18%
Fee Waiver and Expense Reimbursement	[2]	0.13%	0.07%	0.18%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	1.05%	1.35%	1.00%

Example

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard US Realty Equity Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	107	334	579	1,283
Open Shares	137	428	739	1,624
R6 Shares	102	318	552	1,225

Portfolio Turnover

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 43% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities (including common, convertible and preferred stocks) of US Realty Companies (defined below), as well as certain synthetic instruments related to US Realty Companies. Such synthetic instruments are investments that have economic characteristics similar to the Portfolio’s direct investments in US Realty Companies and may include warrants, rights, options and shares of ETFs.

The Investment Manager conducts proprietary quantitative, qualitative and on-site real estate analysis to select the Portfolio’s investments, which may include, as appropriate, research at the macroeconomic, sector, company and property level. The Investment Manager’s individual company research may consider a number of quantitative measures, including earnings growth potential, price to earnings or free cash flow multiples, price to NAV ratios, dividend yield and potential for growth, return on equity and return on assets, as well as qualitative factors such as overall business and growth strategy and quality of management.

“Realty Companies” are real estate-related companies of any size including, but not limited to, REITs, real estate operating or service companies and companies in the homebuilding, lodging and hotel industries, as well as companies engaged in the natural resources and utility industries, and other companies whose investments, balance sheets or income statements are real estate-intensive (i.e. the company’s actual or anticipated revenues, profits, assets, services or products are related to real estate including, but not limited to, the ownership, renting, leasing, construction, management, development or financing of commercial, industrial or residential real estate).

The Portfolio may invest in issuers of any market capitalization and securities of any maturity, and the Portfolio’s investments also may include securities purchased in IPOs.

The Portfolio also may invest up to 20% of its assets in equity and fixed-income securities and instruments of companies or entities (which need not be US Realty Companies), including, but not limited to, securities of non-US companies and other investment companies.

The Portfolio’s investments in preferred stock and convertible and fixed income securities may include securities which, at the time of purchase, are rated below “investment grade” by an NRSRO, or the unrated equivalent as determined by the Investment Manager (“junk bonds”).

In addition to purchasing options, the Portfolio may, but is not required to, write put and covered call options on securities and indexes, for hedging purposes or to seek to increase returns.

The Portfolio is classified as “non-diversified” under the 1940 Act, 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.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Other Equity Securities Risk. Preferred stock is subject to credit and interest rate risk (described below) and the risk that the dividend on the stock may be changed or omitted by the issuer and, unlike common stock, participation in the growth of an issuer may be limited. The market value of a convertible security tends to perform like that of a regular debt security so that, if market interest rates rise, the value of the convertible security falls. Investments in rights and warrants involve certain risks, including the possible lack of a liquid market for resale, price fluctuations and the failure of the price of the underlying security to reach a level at which the right or warrant can be prudently exercised, in which case the warrant may expire without being exercised and result in a loss of the Portfolio’s entire investment.

Realty Companies Risk. Since the Portfolio focuses its investments in Realty Companies, the Portfolio could lose money due to the performance of real estate-related securities even if securities markets generally are experiencing positive results. The performance of investments made by the Portfolio may be determined to a great extent by the current status of the real estate industry in general, or by other factors (such as interest rates and the availability of loan capital) that may affect the real estate industry, even if other industries would not be so affected. Consequently, the investment strategies of the Portfolio could lead to securities investment results that may be significantly different from investments in securities of other industries or sectors or in a more broad-based portfolio generally.

The risks related to investments in Realty Companies include, but are not limited to: adverse changes in general economic and local market conditions; adverse developments in employment; changes in supply or demand for similar or competing properties; unfavorable changes in applicable taxes, governmental regulations and interest rates; operating or development expenses; and lack of available financing.

Due to certain special considerations that apply to REITs, investments in REITs may carry additional risks not necessarily present in investments in other securities. REIT securities (including those trading on national exchanges) typically have trading volumes that are less than those of common stocks of non-Realty Companies traded on national exchanges, which may affect a Portfolio’s ability to trade or liquidate those securities. An investment in REITs may be adversely affected if the REIT fails to comply with applicable laws and regulations, including failing to qualify as a REIT under the Code. Failure to qualify with any of these requirements could jeopardize a company’s status as a REIT. The Portfolio generally will have no control over the operations and policies of a REIT, and the Portfolio generally will have no ability to cause a REIT to take the actions necessary to qualify as a REIT.

Small and Mid Cap Companies Risk. Many Realty Companies are small and mid cap companies, which 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 securities 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.

Non-Diversification Risk. The Portfolio’s NAV 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.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

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. 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.

Options Risk. Writing options on securities and indexes, including for hedging purposes, may reduce returns or increase volatility, perhaps substantially, and may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions. Writing options is subject to many of the risks of, and can be highly sensitive to changes in the value of, the related security or index. As such, a small commitment to written options could potentially have a relatively large impact on the Portfolio’s performance. Purchasing options will reduce returns by the amount of premiums paid for options that are not exercised. Over-the-counter options purchased on securities and indexes are subject to the risk of default by the counterparty and can be illiquid.

Investment Companies and ETF Risk. Any investments in other investment companies and ETFs are subject to the risks of the investments of the investment companies and ETFs, as well as to the general risks of investing in investment companies and ETFs. Portfolio shares will bear not only the Portfolio’s management fees and operating expenses, but also their proportional share of the management fees and operating expenses of any other investment companies and ETFs in which the Portfolio invests.

Performance Bar Chart and Table Year-by-Year Total Returns for Open Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Realty Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. The Portfolio commenced operations after all of the assets of an investment company advised by Alesco, Grubb & Ellis AGA U.S. Realty Fund (the “Predecessor Realty Equity Fund”), were transferred to the Portfolio in exchange for Open Shares of the Portfolio in a tax-free reorganization on September 23, 2011. The bar chart shows how the performance of the Portfolio’s Open Shares (or the Predecessor Realty Equity Fund’s Class A shares, prior to September 23, 2011) has varied from year to year. Updated performance information is available at www.LazardNet.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.

Best Quarter:
9/30/09 36.29%

Worst Quarter:
9/30/11 -17.99%

Average Annual Total Returns (for the periods ended December 31, 2014)

After-tax returns are shown only for Open 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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

Average Annual Returns Lazard US Realty Equity Portfolio	1 Year	5 Years	Life of Portfolio	Inception Date
Open Shares	25.33%	17.99%	24.06%	Dec. 31, 2008
Institutional Shares	25.70%		21.08%	Sep. 26, 2011
R6 Shares	25.70%		21.08%
After Taxes on Distributions Open Shares	24.29%	14.59%	20.45%
After Taxes on Distributions and Sale of Portfolio Shares Open Shares	14.41%	13.22%	18.49%
FTSE NAREIT All Equity REITs Index (reflects no deduction for fees, expenses or taxes) (Open)	28.03%	16.91%	18.69%
FTSE NAREIT All Equity REITs Index (reflects no deduction for fees, expenses or taxes) (Institutional)	28.03%	16.91%	19.50%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2025, to the extent Total Annual Portfolio Operating Expenses exceed 1.05%, 1.35% and 1.00% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard US Small Cap Equity Growth Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks long-term capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-12-31

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. Because the Portfolio commenced investment operations on December 31, 2014, no portfolio turnover information is presented.

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year.

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Portfolio invests primarily in equity securities, principally common stocks, of small cap US companies believed to have the potential for significant earnings growth. The Investment Manager considers “small cap companies” to be those companies that, at the time of initial purchase by the Portfolio, have market capitalizations within the range of companies included in the Russell 2000 Growth Index (ranging from approximately $35.9 million to $10.8 billion as of April 9, 2015).

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of small cap US companies.

The Portfolio may invest up to 20% of its assets in securities of larger US or non-US companies.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Growth Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to have the potential for growth, but that may not realize such perceived potential for extended periods of time or may never realize such perceived growth potential. Such stocks may be more volatile than other stocks because they can be more sensitive to investor perceptions of the issuing company’s growth potential. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

Small Cap Companies Risk. Small 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 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.

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. 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.

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.

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

Because the Portfolio did not have a full calendar year of performance 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. Updated performance information is available at www.LazardNet.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.

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 did not have a full calendar year of performance 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.LazardNet.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.

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.90%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.17%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.07%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.07%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

109

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

340

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.90%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.22%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.37%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.37%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

139

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

434

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.90%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.17%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.07%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.02%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.05%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

107

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

337

[1] "Other Expenses" are based on estimated amounts for the current fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through December 31, 2016 to the extent Total Annual Portfolio Operating Expenses exceed 1.10%, 1.40% and 1.05% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

XML

Lazard Emerging Markets Debt Portfolio

Lazard Emerging Markets Debt Portfolio

Investment Objective

The Portfolio seeks total return from current income and capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard Emerging Markets Debt Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard Emerging Markets Debt Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		0.80%	0.80%	0.80%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		0.16%	0.66%	0.16%	[1]
Total Annual Portfolio Operating Expenses		0.96%	1.71%	0.96%
Fee Waiver and Expense Reimbursement	[2]		0.41%	0.01%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	0.96%	1.30%	0.95%

Example

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard Emerging Markets Debt Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	98	306	531	1,178
Open Shares	132	433	756	1,671
R6 Shares	97	305	530	1,177

Portfolio Turnover

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 204% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in debt securities issued or guaranteed by governments, government agencies or supranational bodies or companies or other private-sector entities, including fixed and/or floating rate investment grade and non-investment grade bonds, convertible securities, commercial paper, CDOs, short- and medium-term obligations and other fixed-income obligations, and may invest in money market instruments such as certificates of deposit. The securities in which the Portfolio invests may be denominated in the US dollar, the Canadian dollar, the Euro, the Japanese yen, the Pound Sterling, or the local currency of the issuer.

Under normal circumstances, the Portfolio invests at least 80% of its assets in debt securities that are economically tied to emerging market countries. Emerging market countries include all countries not represented by the MSCI World Index. The Portfolio currently intends to focus its investments in Asia, Africa, the Middle East, Latin America and the developing countries of Europe, although the allocation of the Portfolio’s assets among countries and regions may vary from time to time based on the Investment Manager’s judgment and its analysis of market conditions.

The Portfolio may invest without limitation in securities rated below investment grade (e.g., lower than Baa by Moody’s or lower than BBB by S&P) (“junk bonds”) or securities that are unrated. Additionally, the Portfolio is not restricted to investments in securities of any particular maturity or duration. Duration is an estimate of the sensitivity of the price (the value of principal) of a fixed-income security to a change in interest rates. Generally, the longer the duration, the higher the expected volatility. For example, the market price of a fixed-income security with a duration of three years would be expected to decline 3% if interest rates rose 1%. Conversely, the market price of the same security would be expected to increase 3% if interest rates fell 1%.

The Portfolio may, but is not required to enter into forward currency contracts and credit default swaps, for hedging purposes or to seek to increase returns.

The Portfolio is classified as “non-diversified” under the 1940 Act, 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.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Some debt securities may give the issuer the option to call, or redeem, the securities before their maturity. If securities held by the Portfolio are called during a time of declining interest rates (which is typically the case when issuers exercise options to call outstanding securities), the Portfolio may have to reinvest the proceeds in an investment offering a lower yield (and the Portfolio may not fully benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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. Currency investments could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies.

Liquidity Risk. The lack of a readily available market may limit the ability of the Portfolio to sell certain securities at the time and price it would like. The size of certain debt securities offerings of emerging markets issuers may be relatively smaller in size than debt offerings in more developed markets and, in some cases, the Portfolio, by itself or together with other Portfolios or other accounts managed by the Investment Manager, may hold a position in a security that is large relative to the typical trading volume for that security; these factors can make it difficult for the Portfolio to dispose of the position at the desired time or price.

Non-Diversification Risk. The Portfolio’s NAV 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.

Forward Currency Contracts and Other Derivatives Risk. Forward currency contracts and other derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Forward currency contracts, over-the-counter options on currencies, swap agreements and other over-the-counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. These derivatives transactions, as well as the exchange-traded options in which the Portfolio may invest, are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related currency, security or other reference asset. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions, even if entered into for hedging purposes, may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in high transaction costs and an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Emerging Markets Debt Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to those 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. Updated performance information is available at www.LazardNet.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.

Best Quarter:
3/31/12 7.52%

Worst Quarter:
6/30/13 -7.60%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

The 50% JPMorgan Emerging Market Bond Index Global Diversified Index/50% JPMorgan Government Bond Index—Emerging Markets Global Diversified Index shown in the table is an unmanaged index created by the Investment Manager, and is a 50/50 blend of the JPMorgan Emerging Market Bond Index Global Diversified Index and the JPMorgan Government Bond Index—Emerging Markets Global Diversified Index.

Average Annual Returns Lazard Emerging Markets Debt Portfolio	1 Year	Life of Portfolio	Inception Date
Institutional Shares	(2.07%)	2.50%	Feb. 28, 2011
Open Shares	(2.53%)	2.17%	Feb. 28, 2011
R6 Shares	(2.07%)	2.50%
After Taxes on Distributions Institutional Shares	(2.77%)	0.68%
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	(1.15%)	1.27%
JPMorgan Emerging Market Bond Index Global Diversified® Index (reflects no deduction for fees, expenses or taxes)	7.43%	6.81%
JPMorgan Government Bond Index – Emerging Markets Global Diversified® Index (reflects no deduction for fees, expenses or taxes)	(5.72%)	(0.39%)
50% JPMorgan Emerging Market Bond Index Global Diversified Index/ 50% JPMorgan Government Bond Index – Emerging Markets Global Diversified Index (reflects no deduction for fees, expenses or taxes)	0.71%	3.22%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.00%, 1.30% and .95% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, and from May 2, 2016 through May 1, 2025, to the extent Total Annual Portfolio Operating Expenses exceed 1.10%, 1.40% and 1.05% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively. All limitations on Total Annual Portfolio Operating Expenses are exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard US Realty Equity Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objectives

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio’s primary investment objective is long-term capital appreciation,

Objective, Secondary [Text Block]

rr_ObjectiveSecondaryTextBlock

with current income, including interest and dividends from portfolio securities, as a secondary objective.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2025-05-01

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 43% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

43.00%

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities (including common, convertible and preferred stocks) of US Realty Companies (defined below), as well as certain synthetic instruments related to US Realty Companies. Such synthetic instruments are investments that have economic characteristics similar to the Portfolio’s direct investments in US Realty Companies and may include warrants, rights, options and shares of ETFs.

The Investment Manager conducts proprietary quantitative, qualitative and on-site real estate analysis to select the Portfolio’s investments, which may include, as appropriate, research at the macroeconomic, sector, company and property level. The Investment Manager’s individual company research may consider a number of quantitative measures, including earnings growth potential, price to earnings or free cash flow multiples, price to NAV ratios, dividend yield and potential for growth, return on equity and return on assets, as well as qualitative factors such as overall business and growth strategy and quality of management.

“Realty Companies” are real estate-related companies of any size including, but not limited to, REITs, real estate operating or service companies and companies in the homebuilding, lodging and hotel industries, as well as companies engaged in the natural resources and utility industries, and other companies whose investments, balance sheets or income statements are real estate-intensive (i.e. the company’s actual or anticipated revenues, profits, assets, services or products are related to real estate including, but not limited to, the ownership, renting, leasing, construction, management, development or financing of commercial, industrial or residential real estate).

The Portfolio may invest in issuers of any market capitalization and securities of any maturity, and the Portfolio’s investments also may include securities purchased in IPOs.

The Portfolio also may invest up to 20% of its assets in equity and fixed-income securities and instruments of companies or entities (which need not be US Realty Companies), including, but not limited to, securities of non-US companies and other investment companies.

The Portfolio’s investments in preferred stock and convertible and fixed income securities may include securities which, at the time of purchase, are rated below “investment grade” by an NRSRO, or the unrated equivalent as determined by the Investment Manager (“junk bonds”).

In addition to purchasing options, the Portfolio may, but is not required to, write put and covered call options on securities and indexes, for hedging purposes or to seek to increase returns.

The Portfolio is classified as “non-diversified” under the 1940 Act, 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.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Other Equity Securities Risk. Preferred stock is subject to credit and interest rate risk (described below) and the risk that the dividend on the stock may be changed or omitted by the issuer and, unlike common stock, participation in the growth of an issuer may be limited. The market value of a convertible security tends to perform like that of a regular debt security so that, if market interest rates rise, the value of the convertible security falls. Investments in rights and warrants involve certain risks, including the possible lack of a liquid market for resale, price fluctuations and the failure of the price of the underlying security to reach a level at which the right or warrant can be prudently exercised, in which case the warrant may expire without being exercised and result in a loss of the Portfolio’s entire investment.

Realty Companies Risk. Since the Portfolio focuses its investments in Realty Companies, the Portfolio could lose money due to the performance of real estate-related securities even if securities markets generally are experiencing positive results. The performance of investments made by the Portfolio may be determined to a great extent by the current status of the real estate industry in general, or by other factors (such as interest rates and the availability of loan capital) that may affect the real estate industry, even if other industries would not be so affected. Consequently, the investment strategies of the Portfolio could lead to securities investment results that may be significantly different from investments in securities of other industries or sectors or in a more broad-based portfolio generally.

The risks related to investments in Realty Companies include, but are not limited to: adverse changes in general economic and local market conditions; adverse developments in employment; changes in supply or demand for similar or competing properties; unfavorable changes in applicable taxes, governmental regulations and interest rates; operating or development expenses; and lack of available financing.

Due to certain special considerations that apply to REITs, investments in REITs may carry additional risks not necessarily present in investments in other securities. REIT securities (including those trading on national exchanges) typically have trading volumes that are less than those of common stocks of non-Realty Companies traded on national exchanges, which may affect a Portfolio’s ability to trade or liquidate those securities. An investment in REITs may be adversely affected if the REIT fails to comply with applicable laws and regulations, including failing to qualify as a REIT under the Code. Failure to qualify with any of these requirements could jeopardize a company’s status as a REIT. The Portfolio generally will have no control over the operations and policies of a REIT, and the Portfolio generally will have no ability to cause a REIT to take the actions necessary to qualify as a REIT.

Small and Mid Cap Companies Risk. Many Realty Companies are small and mid cap companies, which 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 securities 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.

Non-Diversification Risk. The Portfolio’s NAV 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.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

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. 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.

Options Risk. Writing options on securities and indexes, including for hedging purposes, may reduce returns or increase volatility, perhaps substantially, and may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions. Writing options is subject to many of the risks of, and can be highly sensitive to changes in the value of, the related security or index. As such, a small commitment to written options could potentially have a relatively large impact on the Portfolio’s performance. Purchasing options will reduce returns by the amount of premiums paid for options that are not exercised. Over-the-counter options purchased on securities and indexes are subject to the risk of default by the counterparty and can be illiquid.

Investment Companies and ETF Risk. Any investments in other investment companies and ETFs are subject to the risks of the investments of the investment companies and ETFs, as well as to the general risks of investing in investment companies and ETFs. Portfolio shares will bear not only the Portfolio’s management fees and operating expenses, but also their proportional share of the management fees and operating expenses of any other investment companies and ETFs in which the Portfolio invests.

Risk Lose Money [Text]

rr_RiskLoseMoney

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Risk Nondiversified Status [Text]

rr_RiskNondiversifiedStatus

The Portfolio’s NAV 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.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Bar Chart and Table Year-by-Year Total Returns for Open Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard US Realty Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. The Portfolio commenced operations after all of the assets of an investment company advised by Alesco, Grubb & Ellis AGA U.S. Realty Fund (the “Predecessor Realty Equity Fund”), were transferred to the Portfolio in exchange for Open Shares of the Portfolio in a tax-free reorganization on September 23, 2011. The bar chart shows how the performance of the Portfolio’s Open Shares (or the Predecessor Realty Equity Fund’s Class A shares, prior to September 23, 2011) has varied from year to year. Updated performance information is available at www.LazardNet.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.

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 Realty Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:
9/30/09 36.29%

Worst Quarter:
9/30/11 -17.99%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

36.29%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(17.99%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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 Open 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 Open 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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

FTSE NAREIT All Equity REITs Index (reflects no deduction for fees, expenses or taxes) (Open)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

28.03%

5 Years

rr_AverageAnnualReturnYear05

16.91%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

18.69%

FTSE NAREIT All Equity REITs Index (reflects no deduction for fees, expenses or taxes) (Institutional)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

28.03%

5 Years

rr_AverageAnnualReturnYear05

16.91%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

19.50%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.80%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.38%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.18%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.13%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.05%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

107

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

334

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

579

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,283

1 Year

rr_AverageAnnualReturnYear01

25.70%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

21.08%

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 26, 2011

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.80%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.37%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.42%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.07%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.35%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

137

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

428

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

739

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,624

Annual Return 2009

rr_AnnualReturn2009

59.47%

Annual Return 2010

rr_AnnualReturn2010

35.55%

Annual Return 2011

rr_AnnualReturn2011

9.91%

Annual Return 2012

rr_AnnualReturn2012

20.58%

Annual Return 2013

rr_AnnualReturn2013

1.58%

Annual Return 2014

rr_AnnualReturn2014

25.33%

1 Year

rr_AverageAnnualReturnYear01

25.33%

5 Years

rr_AverageAnnualReturnYear05

17.99%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

24.06%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2008

Open Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

24.29%

5 Years

rr_AverageAnnualReturnYear05

14.59%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

20.45%

Open Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

14.41%

5 Years

rr_AverageAnnualReturnYear05

13.22%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

18.49%

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.80%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.38%

^[2]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.18%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.18%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.00%

^[1]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

102

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

318

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

552

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,225

1 Year

rr_AverageAnnualReturnYear01

25.70%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

21.08%

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2025, to the extent Total Annual Portfolio Operating Expenses exceed 1.05%, 1.35% and 1.00% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Lazard International Equity Concentrated Portfolio

Lazard International Equity Concentrated Portfolio

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard International Equity Concentrated Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard International Equity Concentrated Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		0.90%	0.90%	0.90%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses	[1]	0.33%	0.38%	0.33%
Total Annual Portfolio Operating Expenses		1.23%	1.53%	1.23%
Fee Waiver and Expense Reimbursement	[2]	0.18%	0.18%	0.23%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	1.05%	1.35%	1.00%

Example

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard International Equity Concentrated Portfolio (USD $)	1 Year	3 Years
Institutional Shares	107	366
Open Shares	137	460
R6 Shares	102	359

Portfolio Turnover

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. For the period from August 29, 2014 (commencement of operations) through December 31, 2014, the Portfolio’s portfolio turnover rate was 45% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in equity securities, principally common stocks, of non-US companies. The Portfolio has a concentrated portfolio of investments, typically investing in 20 to 30 securities of non-US companies, including those whose principal business activities are located in emerging market countries. The Investment Manager seeks to realize the Portfolio’s investment objective primarily through stock selection, investing in companies believed to have sustainably high or improving returns and trading at attractive valuations. In choosing stocks for the Portfolio, the Investment Manager generally looks for established companies in economically developed countries that the Investment Manager believes are undervalued based on their earnings, cash flow or asset values. The Investment Manager also may invest the Portfolio’s assets in securities of companies domiciled in emerging market countries in an amount up to the current percentage of securities in the MSCI All Country World Index ex-US issued by companies domiciled in emerging market countries (22.0% as of April 9, 2015) plus 15%. The Portfolio may invest in securities of companies across the capitalization spectrum.

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities.

The Portfolio is classified as “non-diversified” under the 1940 Act, 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.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Value Investing Risk. The Portfolio generally invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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-Diversification Risk. The Portfolio’s NAV 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.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in high transaction costs and an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

Performance Bar Chart and Table

Because the Portfolio did not have a full calendar year of performance as of 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. Updated performance information is available at www.LazardNet.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.

[1] "Other Expenses" are based on estimated amounts for the current fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through August 29, 2016 to the extent Total Annual Portfolio Operating Expenses exceed 1.05%, 1.35% and 1.00% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio. Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement have been restated to reflect the current fee waiver and expense limitation arrangement.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard International Equity Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks long-term capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-05-01

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 36% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

36.00%

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

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 large non-US companies with market capitalizations in the range of companies included in the MSCI® Europe, Australasia and Far East (“EAFE®”) Index (ranging from approximately $1.6 billion to $274.4 billion as of April 9, 2015) that the Investment Manager believes are undervalued based on their earnings, cash flow or asset values.

In choosing stocks for the Portfolio, the Investment Manager looks for established companies in economically developed countries and may invest up to 15% of the Portfolio’s assets in securities of companies whose principal business activities are located in emerging market countries. Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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.

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 Year-by-Year Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard International Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. 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.LazardNet.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.

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 International Equity Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:
6/30/09 21.90%

Worst Quarter:
9/30/11 -17.77%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

21.90%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(17.77%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

MSCI EAFE Index (reflects no deduction for fees, expenses or taxes) (Institutional)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(4.90%)

5 Years

rr_AverageAnnualReturnYear05

5.33%

10 Years

rr_AverageAnnualReturnYear10

4.43%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

5.36%

MSCI EAFE Index (reflects no deduction for fees, expenses or taxes) (Open)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(4.90%)

5 Years

rr_AverageAnnualReturnYear05

5.33%

10 Years

rr_AverageAnnualReturnYear10

4.43%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

4.84%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.15%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

0.90%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.05%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.85%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

87

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

282

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

494

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,103

Annual Return 2005

rr_AnnualReturn2005

11.25%

Annual Return 2006

rr_AnnualReturn2006

22.92%

Annual Return 2007

rr_AnnualReturn2007

10.96%

Annual Return 2008

rr_AnnualReturn2008

(37.75%)

Annual Return 2009

rr_AnnualReturn2009

25.19%

Annual Return 2010

rr_AnnualReturn2010

8.04%

Annual Return 2011

rr_AnnualReturn2011

(7.17%)

Annual Return 2012

rr_AnnualReturn2012

22.70%

Annual Return 2013

rr_AnnualReturn2013

20.84%

Annual Return 2014

rr_AnnualReturn2014

(4.29%)

1 Year

rr_AverageAnnualReturnYear01

(4.29%)

5 Years

rr_AverageAnnualReturnYear05

7.31%

10 Years

rr_AverageAnnualReturnYear10

5.34%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

6.23%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 29, 1991

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(4.29%)

5 Years

rr_AverageAnnualReturnYear05

7.14%

10 Years

rr_AverageAnnualReturnYear10

5.07%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

5.40%

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(2.04%)

5 Years

rr_AverageAnnualReturnYear05

5.99%

10 Years

rr_AverageAnnualReturnYear10

4.49%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

5.06%

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.17%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.17%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.02%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.15%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

117

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

370

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

642

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,419

1 Year

rr_AverageAnnualReturnYear01

(4.57%)

5 Years

rr_AverageAnnualReturnYear05

7.00%

10 Years

rr_AverageAnnualReturnYear10

5.03%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

4.96%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 23, 1997

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.15%

^[2]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

0.90%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.10%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.80%

^[1]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

82

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

277

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

489

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,099

1 Year

rr_AverageAnnualReturnYear01

(4.29%)

5 Years

rr_AverageAnnualReturnYear05

7.31%

10 Years

rr_AverageAnnualReturnYear10

5.34%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

6.23%

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed .85%, 1.15% and .80% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio. Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement have been restated to reflect the current fee waiver and expense limitation arrangement.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard Emerging Markets Equity Blend Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks long-term capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-05-01

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 44% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

44.00%

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Portfolio invests primarily in equity securities, including common stocks, ADRs and GDRs, of non-US companies whose principal activities are located in emerging market countries.

Emerging market countries include all countries represented by the MSCI Emerging Markets Index, which currently includes: Brazil, Chile, China, Colombia, Czech Republic, Egypt, Greece, Hungary, India, Indonesia, Korea, Malaysia, Mexico, Peru, Philippines, Poland, Qatar, Russia, South Africa, Taiwan, Thailand, Turkey and United Arab Emirates.

The Investment Manager allocates the Portfolio’s assets between versions of the Investment Manager’s emerging markets relative value and relative growth investment strategies. In the emerging markets relative value strategy, assets are invested in companies that the Investment Manager believes are undervalued based on their earnings, cash flow or asset values. In the emerging markets relative growth strategy, the Investment Manager employs a relative growth investment philosophy that is based on value creation through the process of bottom-up stock selection.

The Investment Manager currently intends to maintain an allocation of approximately 40%-60% of the Portfolio’s assets in each strategy, but the allocation ranges could change in the future without prior notice to shareholders. The Investment Manager will make allocation decisions between the strategies based on quantitative and qualitative analysis through proprietary software models. The Investment Manager will periodically review the allocation of Portfolio assets between the strategies and modify the relative weightings to emphasize risk or to seek to mitigate risk exposures.

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of companies whose principal business activities are located in emerging market countries.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Value Investing and Growth Investing Risks. The Portfolio invests a portion of its assets in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The Portfolio also invests a portion of its assets in stocks believed by the Investment Manager to have the potential for growth, but that may not realize such perceived potential for extended periods of time or may never realize such perceived growth potential. Such stocks may be more volatile than other stocks because they can be more sensitive to investor perceptions of the issuing company’s growth potential. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

Quantitative Model Risk. The success of the Portfolio depends upon effectiveness of the Investment Manager’s quantitative model. A quantitative model, such as the risk and other models used by the Investment Manager requires adherence to a systematic, disciplined process. The Investment Manager’s ability to monitor and, if necessary, adjust its quantitative model could be adversely affected by various factors, including incorrect or outdated market and other data inputs. Factors that affect a security’s value can change over time, and these changes may not be reflected in the quantitative model. In addition, the factors used in quantitative analysis and the weight placed on those factors may not be predictive of a security’s value.

Small Cap Companies Risk. Small 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 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.

Allocation Risk. The Portfolio’s ability to achieve its investment objective depends in part on the Investment Manager’s skill in determining the Portfolio’s allocation between the investment strategies. The Investment Manager’s evaluations and assumptions underlying its allocation decisions may differ from actual market conditions.

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 Year-by-Year Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Emerging Markets Equity Blend Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. The bar chart shows how the performance of the Portfolio’s Institutional Shares has varied from year to year. Updated performance information is available at www.LazardNet.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.

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 Emerging Markets Equity Blend Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:
3/31/12 17.59%

Worst Quarter:
9/30/11 -24.35%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

17.59%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(24.35%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

MSCI Emerging Markets Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(2.19%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

3.20%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.28%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.28%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.28%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

130

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

406

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

702

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,545

Annual Return 2011

rr_AnnualReturn2011

(20.43%)

Annual Return 2012

rr_AnnualReturn2012

18.19%

Annual Return 2013

rr_AnnualReturn2013

(1.14%)

Annual Return 2014

rr_AnnualReturn2014

(8.66%)

1 Year

rr_AverageAnnualReturnYear01

(8.66%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

1.25%

Inception Date

rr_AverageAnnualReturnInceptionDate

May 28, 2010

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(8.94%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

1.08%

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(4.36%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

1.09%

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.38%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.63%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.03%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.60%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

163

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

511

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

884

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,930

1 Year

rr_AverageAnnualReturnYear01

(8.95%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

0.94%

Inception Date

rr_AverageAnnualReturnInceptionDate

May 28, 2010

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.28%

^[2]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.28%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.03%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.25%

^[1]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

127

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

403

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

699

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,543

1 Year

rr_AverageAnnualReturnYear01

(8.66%)

Life of Portfolio

rr_AverageAnnualReturnSinceInception

1.25%

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.30%, 1.60% and 1.25% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard Fundamental Long/Short Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-05-01

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. For the period from April 30, 2014 (commencement of operations) through December 31, 2014, the Portfolio’s portfolio turnover rate was 132% of the average value of its portfolio (excluding securities sold short).

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

132.00%

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Portfolio utilizes a long/short investment strategy through investments in equity securities, principally common stocks, and derivative instruments that provide exposure to such equity securities. The Investment Manager’s approach in managing the Portfolio is based on its bottom-up relative-value philosophy. Generally, the Investment Manager seeks to take long positions by investing in equity securities of companies with strong and/or improving financial productivity that have attractive valuations, and seeks to complement these long positions with short positions in respect of companies viewed by the Investment Manager to possess deteriorating fundamentals, unattractive valuations or other qualities warranting a short position, or those that represent a sector or market hedge. The Portfolio will generally have short positions through selling securities “short” and through investments in derivative instruments, principally swap agreements on individual securities, and may use short positions to seek to increase returns or to reduce risk. It is expected that the total gross exposure of the Portfolio will typically range from 0% to 200% of the Portfolio’s NAV and that the net exposure will typically range from -25% (net short position) to 100% of its NAV. As an example, if the Portfolio’s long investment exposure is 100% of its NAV and its short exposure is 75% of its NAV, the Portfolio would have a net long exposure of 25% of NAV.

Although the Portfolio’s investment focus is US companies, the Portfolio also may invest in non-US companies, including depositary receipts and shares. The Portfolio may invest in companies across the capitalization spectrum and also may invest in IPOs. At certain times, based on the currently existing market environment, the Investment Manager may not believe it is able to find sufficient opportunities to invest in equity securities and/or take short positions in equity securities and may determine to tactically shift the Portfolio to invest substantially in money market instruments, such as short-term US Treasury securities and certificates of deposit.

A short sale involves the sale of a security that the Portfolio does not own in the expectation of purchasing the same security (or a security exchangeable therefor) at a later date and at a lower price and profiting from the price decline. Similarly, when taking short positions with respect to securities through investments in derivative instruments, the Investment Manager is expecting the value of such securities to fall during the period of the Portfolio’s investment exposure.

In addition, the Portfolio may, but is not required to, invest in ETFs, enter into equity and currency swap agreements, and forward currency contracts; and purchase and sell options, including writing put and call options on securities (including ETFs), indexes and currencies, for hedging purposes or to seek to increase returns.

The Portfolio is classified as “non-diversified” under the 1940 Act, 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.

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.

Short Position Risk. Short positions may involve substantial risks. If a short position appreciates in value during the period of the Portfolio’s investment, there will be a loss to the Portfolio that could be substantial. Short positions involve more risk than long positions because the maximum sustainable loss on a security purchased is limited to the amount paid for the security plus the transaction costs. However, the Portfolio’s potential loss on a short position is unlimited because, theoretically, there is no limit to the potential price increase of a security.

Swap Agreements and Other Derivatives Risk. Swap agreements and other derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Over-the-counter swap agreements, forward currency contracts, over-the-counter options on securities (including options on ETFs), indexes and currencies and other over-the-counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. These derivatives transactions, as well as the exchange-traded options in which the Portfolio may invest, are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related security, index, commodity, interest rate, currency or other reference asset. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions, even when entered into for hedging purposes, may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

Counterparty Credit Risk. The Portfolio’s investment strategy is dependent on counterparties to its securities borrowing transactions in connection with short sales of securities and counterparties to derivatives transactions. Transactions with such counterparties are subject to the risk of default by a counterparty, which could result in a loss of Portfolio assets used as collateral or the loss of monies owed to the Portfolio by a counterparty.

Leverage Risk. The use of leverage, which the Portfolio’s strategy entails, may magnify the Portfolio’s gains or losses.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

Market Direction Risk. Since the Portfolio will typically hold both long and short positions, an investment in the Portfolio will involve market risks associated with different types of investment decisions than those made for a typical “long only” fund. The Portfolio’s results will suffer both when there is a general market advance and the Portfolio holds significant “short” positions, or when there is a general market decline and the Portfolio holds significant “long” positions. In recent years, the markets have shown considerable volatility from day to day and even in intra-day trading.

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. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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.

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.

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. 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.

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 Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Non-Diversification Risk. The Portfolio’s NAV 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.

IPO Shares Risk. The prices of securities purchased in IPOs can be very volatile. The effect of IPOs on the Portfolio’s performance depends on a variety of factors, including the number of IPOs the Portfolio invests in relative to the size of the Portfolio and whether and to what extent a security purchased in an IPO appreciates or depreciates in value. As the Portfolio’s asset base increases, IPOs may have a diminished effect on the Portfolio’s performance.

ETF Risk. Shares of ETFs may trade at prices that vary from their NAVs, sometimes significantly. The shares of ETFs may trade at prices at, below or above their most recent NAV. In addition, the performance of an ETF pursuing a passive index-based strategy may diverge from the performance of the index. The Portfolio’s investments in ETFs are subject to the risks of such ETF’s investments, as well as to the general risks of investing in ETFs. Portfolio shares will bear not only the Portfolio’s management fees and operating expenses, but also their proportional share of the management fees and operating expenses of the ETFs in which the Portfolio invests. The Portfolio may be limited by the 1940 Act in the amount of its assets that may be invested in ETFs and unless an ETF has received an exemptive order from the Securities and Exchange Commission (the “SEC”) on which the Portfolio may rely or an exemption is available.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in high transaction costs and an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

Risk Lose Money [Text]

rr_RiskLoseMoney

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Risk Nondiversified Status [Text]

rr_RiskNondiversifiedStatus

The Portfolio’s NAV 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.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Bar Chart and Table

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

Because the Portfolio did not have a full calendar year of performance as of 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. Updated performance information is available at www.LazardNet.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.

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 did not have a full calendar year of performance as of 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.LazardNet.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.

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.40%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Dividend and Interest Expenses on Securities Sold Short

rr_Component1OtherExpensesOverAssets

1.50%

Remainder of Other Expenses

rr_Component2OtherExpensesOverAssets

2.61%

Other Expenses

rr_OtherExpensesOverAssets

4.11%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

5.51%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(2.31%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

3.20%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

323

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,439

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

2,544

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

5,257

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.40%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Dividend and Interest Expenses on Securities Sold Short

rr_Component1OtherExpensesOverAssets

1.46%

Remainder of Other Expenses

rr_Component2OtherExpensesOverAssets

3.17%

Other Expenses

rr_OtherExpensesOverAssets

4.63%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

6.28%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(2.87%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

3.41%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

344

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,603

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

2,831

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

5,765

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

1.40%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Dividend and Interest Expenses on Securities Sold Short

rr_Component1OtherExpensesOverAssets

1.50%

^[2]

Remainder of Other Expenses

rr_Component2OtherExpensesOverAssets

2.61%

^[2]

Other Expenses

rr_OtherExpensesOverAssets

4.11%

^[2]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

5.51%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(2.36%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

3.15%

^[1]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

318

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,435

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

2,540

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

5,254

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016 to the extent Total Annual Portfolio Operating Expenses exceed 1.70%, 1.95% and 1.65% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, dividend and interest expenses on securities sold short, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Prospectus Date	rr_ProspectusDate	May 01, 2015

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard Emerging Markets Income Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks total return consisting of appreciation and income.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-05-01

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. For the period from April 30, 2014 (commencement of operations) through December 31, 2014, the Portfolio’s portfolio turnover rate was 125% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

125.00%

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, the Portfolio invests at least 80% of its assets in currencies, debt securities, derivative instruments and other investments that are economically tied to emerging market countries. Such investments may include combinations of these instruments that have economic characteristics similar to currencies or debt securities economically tied to emerging markets countries, such as a currency forward contract denominated in an emerging markets currency and US dollar-denominated debt security in a principal amount corresponding to the notional value of forward contracts, which together have economic characteristics similar to a debt security denominated in the emerging markets currency. Derivatives instruments in which the Portfolio may invest include forward currency contracts (including non-deliverable forward contracts). Debt securities in which the Portfolio may invest include debt securities issued or guaranteed by governments, government agencies or supranational bodies; corporate obligations; fixed and/or adjustable rate or inflation-linked investment grade and non- investment grade bonds (“junk bonds”); convertible securities; zero coupon securities; CDOs; short- and medium-term obligations and other fixed-income obligations; and commercial paper and money market instruments such as certificates of deposit.

Emerging market countries include all countries represented by the JPMorgan Emerging Local Markets Plus Index (ELMI +) or countries outside of the G-10, although the allocation of the Portfolio’s assets among countries and regions may vary from time to time based on the judgment of the Investment Manager and its analysis of market conditions. The securities or instruments in which the Portfolio invests may be denominated in US and non-US currencies, including the local currency of the issuer.

Although the Portfolio is not restricted to investments in securities of any particular maturity or duration, the average duration of the Portfolio is expected to be short, typically less than one year. The Investment Manager may extend duration in particular countries when domestic yield curves are favorable.

The Portfolio is not limited to securities of any particular quality or investment grade and, as a result, the Portfolio may invest in securities rated below investment grade (e.g., lower than Baa by Moody’s or lower than BBB by S&P) (“junk bonds”) or securities that are unrated.

The Portfolio may, but is not required to, use derivative instruments that are part of its primary investment strategy, such as forward currency contracts, for hedging purposes.

The Portfolio is classified as “non-diversified” under the 1940 Act, 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.

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.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies.

Forward Currency Contracts and Other Derivatives Risk. Forward currency contracts and other derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Forward currency contracts and other over-the- counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. These derivatives transactions, as well as the exchange-traded options and other derivatives transactions in which the Portfolio may invest, are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related currency, security or other reference asset. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions, even if entered into for hedging purposes, may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

Counterparty Credit Risk. The Portfolio’s investment strategy is dependent in significant part on counterparties to derivatives transactions. Transactions with such counterparties are subject to the risk of default by a counterparty, which could result in the loss of monies owed to the Portfolio by a counterparty.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities ("junk bonds") are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non- investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Some debt securities may give the issuer the option to call, or redeem, the securities before their maturity. If securities held by the Portfolio are called during a time of declining interest rates (which is typically the case when issuers exercise options to call outstanding securities), the Portfolio may have to reinvest the proceeds in an investment offering a lower yield (and the Portfolio may not fully benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

Adjustable rate or inflation-linked securities provide the Portfolio with a certain degree of protection against rises in interest rates or inflation rates, respectively, although adjustable rate securities will participate in any declines in interest rates and inflation-linked securities can also decline in value based on changes in the relevant periodic adjustment rate. Certain adjustable rate securities, such as those with interest rates that fluctuate directly or indirectly based on multiples of a stated index, are designed to be highly sensitive to changes in interest rates and can subject the holders thereof to extreme reductions of yield and possibly loss of principal. Certain fixed-income securities may be issued at a discount from their face value (such as zero coupon securities) or purchased at a price less than their stated face amount or at a price less than their issue price plus the portion of “original issue discount” previously accrued thereon, i.e., purchased at a “market discount.” The amount of original issue discount and/or market discount on certain obligations may be significant, and accretion of market discount together with original issue discount will cause the Portfolio to realize income prior to the receipt of cash payments with respect to these securities.

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.

Liquidity Risk. The lack of a readily available market may limit the ability of the Portfolio to sell certain securities at the time and price it would like. The size of certain debt securities offerings of emerging markets issuers may be relatively smaller in size than debt offerings in more developed markets and, in some cases, the Portfolio, by itself or together with other Portfolios or other accounts managed by the Investment Manager, may hold a position in a security that is large relative to the typical trading volume for that security; these factors can make it difficult for the Portfolio to dispose of the position at the desired time or price.

Non-Diversification Risk. The Portfolio’s NAV 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.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

Risk Lose Money [Text]

rr_RiskLoseMoney

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Risk Nondiversified Status [Text]

rr_RiskNondiversifiedStatus

The Portfolio’s NAV 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.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Bar Chart and Table

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

Because the Portfolio did not have a full calendar year of performance 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. Updated performance information is available at www.LazardNet.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.

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 did not have a full calendar year of performance 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.LazardNet.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.

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.65%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

4.50%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

5.15%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(4.25%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.90%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

92

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,162

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

2,230

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

4,884

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.65%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

13.06%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

13.96%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(12.76%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.20%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

122

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

2,767

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

4,958

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

8,933

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.65%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

4.50%

^[2]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

5.15%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(4.30%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.85%

^[1]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using “Other Expenses” for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

87

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,158

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

2,226

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

4,882

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed .90%, 1.20% and .85% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard Global Equity Select Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks long-term capital appreciation.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-05-01

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 64% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

64.00%

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Portfolio invests primarily in equity securities, principally common stocks, of companies that the Investment Manager believes have strong and/or improving financial productivity and are undervalued based on their earnings, cash flow or asset values. In managing the Portfolio, the Investment Manager utilizes a flexible investment approach and engages in bottom-up, fundamental security analysis and selection. The Portfolio may invest in securities across the capitalization spectrum.

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities. In addition, under normal market conditions, the Portfolio invests significantly (at least 40%—unless market conditions are not deemed favorable by the Investment Manager, in which case the Portfolio would invest at least 30%) in non-US companies. The Investment Manager will allocate the Portfolio’s assets among various regions and countries, including the United States (but in no less than three different countries). The Portfolio’s investments in non-US companies may include companies whose principal business activities are located in emerging market countries.

Although the Portfolio is classified as “diversified” under the 1940 Act, it may invest in a smaller number of issuers than other, more diversified investment portfolios.

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. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Focused Investing Risk. The Portfolio’s NAV 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.

Value Investing Risk. The Portfolio invests in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

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.

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.

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 Total Returns for Institutional Shares As of 12/31

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Global Equity Select Portfolio by showing the Portfolio’s performance for the first complete calendar year of operation compared to that of a broad measure of market performance. The bar chart shows the performance of the Portfolio’s Institutional Shares. Updated performance information is available at www.LazardNet.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.

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 Global Equity Select Portfolio by showing the Portfolio’s performance for the first complete calendar year of operation compared to that of a broad measure of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 823-6300

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.LazardNet.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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:
6/30/14 4.75%

Worst Quarter:
9/30/14 -2.31%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2014

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

4.75%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2014

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(2.31%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2014)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses or taxes)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

MSCI All Country World Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

4.16%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

4.16%

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

3.77%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

4.62%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(3.52%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.10%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

112

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,076

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

2,047

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

4,507

Annual Return 2014

rr_AnnualReturn2014

3.84%

1 Year

rr_AverageAnnualReturnYear01

3.84%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

3.83%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2013

Institutional Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

3.69%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

3.68%

Institutional Shares | After Taxes on Distributions and Sale of Portfolio Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

2.30%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

2.92%

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

12.24%

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

13.34%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(11.94%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.40%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

143

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

2,681

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

4,813

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

8,770

1 Year

rr_AverageAnnualReturnYear01

3.54%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

3.53%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2013

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

3.77%

^[2]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

4.62%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(3.57%)

^[1]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.05%

^[1]

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

107

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,071

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

2,043

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

4,504

1 Year

rr_AverageAnnualReturnYear01

3.84%

Life of Portfolio

rr_AverageAnnualReturnSinceInception

3.83%

[1] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.10%, 1.40% and 1.05% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

[2] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

XML

Lazard Master Alternatives Portfolio

Lazard Master Alternatives Portfolio

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard Master Alternatives Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard Master Alternatives Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		1.40%	1.40%	1.40%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses Dividend and Interest Expenses on Securities Sold Short	[1]	0.89%	0.89%	0.89%
Remainder of Other Expenses		0.42%	0.47%	0.42%
Total Other Expenses		1.31%	1.36%	1.31%
Total Annual Portfolio Operating Expenses		2.71%	3.01%	2.71%
Fee Waiver and Expense Reimbursement	[2]	0.12%	0.17%	0.17%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	2.59%	2.84%	2.54%

Example

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 fee waiver and expense reimbursement arrangement described above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard Master Alternatives Portfolio (USD $)	1 Year	3 Years
Institutional Shares	262	822
Open Shares	287	904
R6 Shares	257	814

Portfolio Turnover

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. Because the Portfolio commenced investment operations on December 31, 2014, no portfolio turnover information is presented.

Principal Investment Strategies

The Portfolio management team utilizes an asset allocation investment strategy whereby the Portfolio’s assets are invested dynamically in a number of alternative investment strategies managed by different portfolio management teams of the Investment Manager (“Investment Strategies”).

The Portfolio invests its assets primarily using the Investment Strategies described below. At any given time the Portfolio’s assets may not be allocated to all Investment Strategies and/or a significant portion of the Portfolio’s assets may be allocated to one Investment Strategy.

The investment approach and process for each Investment Strategy is as follows:

• The global equity long/short strategy seeks attractive risk-adjusted performance through a bottom-up stock selection process supported by fundamental research combined with a defined approach to hedging risk. This strategy seeks to purchase equity securities of companies that the portfolio management team believes have high sustainable or improving financial productivity and compelling valuations and to take short positions in companies that possess the opposite characteristics. The strategy typically invests the majority of its assets outside of the US.

• The US equity long/short strategy seeks to achieve attractive risk-adjusted returns through long positions in equity securities of companies with strong and/or improving financial productivity that have attractive valuations, and short positions in equity securities of companies viewed to possess deteriorating fundamentals, unattractive valuations or other qualities warranting a short position. Short positions may also be employed as a sector or market hedge. Although the strategy’s investment focus is US companies, the strategy also may invest in non- US companies. The strategy may invest in companies across the capitalization spectrum and also may invest in IPOs.

• The Japanese equity long/short strategy seeks to achieve long-term capital appreciation by investing long and short in a diversified portfolio of Japanese equities. This strategy generally seeks to take long positions in securities that the portfolio management team believes will go up in absolute value and take short positions in securities that the team believes will go down in absolute value.

• The emerging markets long/short equity strategy seeks to achieve attractive risk-adjusted returns through long and short positions in a diversified portfolio of emerging markets equities. This strategy utilizes the Investment Manager’s proprietary emerging markets quantitative model that employs a systematic, disciplined process that seeks to control risks and exposures across countries, sectors and issuer market capitalizations.

• The relative value convertible securities strategy is a hedged strategy investing primarily in convertible fixed income and preferred securities (including those rated below investment grade (“junk”)), with the objectives of current income and long-term capital appreciation. Bottom up fundamental credit, equity and quantitative analysis is used in conjunction with top down macroeconomic analysis. The strategy utilizes a relative value approach, focusing on convertible securities that are considered to have low volatility. It is expected that the strategy will invest primarily in small and mid cap companies. The strategy utilizes selective strategy level and position level hedges, seeking to minimize macro risk (equity and credit) and interest rate risk. The strategy may invest in convertible debt and preferred securities of any maturity and any quality.

The Portfolio will generally have short positions through selling securities “short” and through investments in derivative instruments, principally swap agreements on individual securities, and may use short positions to seek to increase returns or to reduce risk. A short sale involves the sale of a security that the Portfolio does not own in the expectation of purchasing the same security (or a security exchangeable therefor) at a later date and at a lower price and profiting from the price decline. Similarly, when taking short positions with respect to securities through investments in derivative instruments, the Investment Manager is expecting the value of such securities to fall during the period of the Portfolio’s investment exposure.

The Investment Strategies may invest in ETFs and similar products, which generally pursue a passive index-based strategy.

In addition, the Investment Strategies may, but are not required to, enter into futures and forward currency contracts and equity, interest rate, credit default and currency swap agreements; and write put and call options on securities (including ETFs), indexes and currencies, for hedging purposes or to seek to increase returns.

It is expected that the Portfolio will buy and sell securities, and take short positions in securities, frequently in connection with implementing its investment strategy.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Short Position Risk. Short positions in equity securities may involve substantial risks. If a short position appreciates in value during the period of the Portfolio’s investment, there will be a loss to the Portfolio that could be substantial. Short positions involve more risk than long positions because the maximum sustainable loss on a security purchased is limited to the amount paid for the security plus the transaction costs. However, the Portfolio’s potential loss on a short position is unlimited because, theoretically, there is no limit to the potential price increase of a security.

Convertible Securities Risk. The market value of convertible securities generally performs like that of non-convertible fixed income securities; that is, their prices move inversely with changes in interest rates (i.e., as interest rates go up, prices go down). In addition, convertible securities are subject to the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Since it derives a portion of its value from the common stock into which it may be converted, a convertible security also is subject to the same types of market and issuer risks that apply to the underlying common stock.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bond”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non- investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Preferred Securities Risk. There are various risks associated with investing in preferred securities. In addition, unlike common stock, participation in the growth of an issuer may be limited.

• Credit risk is the risk that a security held by the Portfolio will decline in price or the issuer of the security will fail to make dividend, interest or principal payments when due because the issuer experiences a decline in its financial status.

• Interest rate risk is the risk that securities will decline in value because of changes in market interest rates. When market interest rates rise, the market value of such securities generally will fall.

• Preferred securities may include provisions that permit the issuer, at its discretion, to defer or omit distributions for a stated period without any adverse consequences to the issuer.

• Preferred securities are generally subordinated to bonds and other debt instruments in an issuer’s capital structure in terms of having priority to corporate income, claims to corporate assets and liquidation payments, and therefore will be subject to greater credit risk than more senior debt instruments.

• During periods of declining interest rates, an issuer may be able to exercise an option to call, or redeem, its issue at par earlier than the scheduled maturity. If this occurs during a time of lower or declining interest rates, the Portfolio may have to reinvest the proceeds in lower yielding securities (and the Portfolio may not benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

Swap Agreements and Other Derivatives Risk. Swap agreements and other derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Over-the-counter swap agreements, forward currency contracts, over-the-counter options on securities (including options on ETFs), indexes and currencies and other over-the-counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. These derivatives transactions, as well as the exchange-traded futures and options in which the Portfolio may invest, are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related index, commodity, interest rate, currency, security or other reference asset.

Counterparty Credit Risk. The Portfolio’s investment strategy is dependent on counterparties to its securities borrowing transactions in connection with short sales of securities and counterparties to derivatives transactions. Transactions with such counterparties are subject to the risk of default by a counterparty, which could result in a loss of Portfolio assets used as collateral or the loss of monies owed to the Portfolio by a counterparty.

Leverage Risk. The use of leverage, which the Portfolio’s strategy entails, may magnify the Portfolio’s gains or losses.

Value Investing Risk. The Portfolio invests in securities believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The securities in which the Portfolio invests may respond differently to market and other developments than other types of securities.

Quantitative Model Risk. The success of the Portfolio’s emerging markets long/short equity strategy depends largely upon effectiveness of the Investment Manager’s quantitative model. A quantitative model, such as the risk and other models used by the Investment Manager for the strategy requires adherence to a systematic, disciplined process. The Investment Manager’s ability to monitor and, if necessary, adjust its quantitative model could be adversely affected by various factors, including incorrect or outdated market and other data inputs. Factors that affect a security’s value can change over time, and these changes may not be reflected in the quantitative model. In addition, the factors used in quantitative analysis and the weight placed on those factors may not be predictive of a security’s value.

Multi-Strategy Risk. The Portfolio’s ability to achieve its investment objective depends in part on the Investment Manager’s skill in determining the Portfolio’s allocation among the Investment Strategies. Investment decisions for the Investment Strategies are made independently of one another and may conflict with each other.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

Market Direction Risk. Since the Portfolio will typically hold both long and short positions, an investment in the Portfolio will involve market risks associated with different types of investment decisions than those made for a typical “long only” fund. The Portfolio’s results will suffer both when there is a general market advance and the Portfolio holds significant “short” positions, or when there is a general market decline and the Portfolio holds significant “long” positions.

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.

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. 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 Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

Japanese Securities Risk. To the extent the Portfolio invests significantly in the securities of companies in Japan, the Portfolio’s performance will be influenced by social, political and economic conditions within Japan and may be more volatile than the performance of funds that do not have significant investments in a single country.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

IPO Shares Risk. The prices of securities purchased in IPOs can be very volatile. The effect of IPOs on the Portfolio’s performance depends on a variety of factors, including the number of IPOs the Portfolio invests in relative to the size of the Portfolio and whether and to what extent a security purchased in an IPO appreciates or depreciates in value. As the Portfolio’s asset base increases, IPOs may have a diminished effect on the Portfolio’s performance.

ETF Risk. Shares of ETFs may trade at prices that vary from their NAVs, sometimes significantly. The shares of ETFs may trade at prices at, below or above their most recent NAV. In addition, the performance of an ETF pursuing a passive index-based strategy may diverge from the performance of the index. The Portfolio’s investments in ETFs are subject to the risks of such ETF’s investments, as well as to the general risks of investing in ETFs.

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.

High Portfolio Turnover Risk. The Portfolio’s investment strategy may involve high portfolio turnover (such as 100% or more). A portfolio turnover rate of 100%, for example, is equivalent to the Portfolio buying and selling all of its securities once during the course of the year. A high portfolio turnover rate could result in high transaction costs and an increase in taxable capital gains distributions to the Portfolio’s shareholders, which will reduce returns to shareholders.

Performance Bar Chart and Table

Because the Portfolio did not have a full calendar year of performance 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. Updated performance information is available at www.LazardNet.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.

[1] "Other Expenses" are based on estimated amounts for the current fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through December 31, 2016 to the extent Total Annual Portfolio Operating Expenses exceed 1.70%, 1.95% and 1.65% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, dividend and interest expenses on securities sold short, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lazard Global Dynamic Multi Asset Portfolio

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Portfolio seeks total return.

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 and hold shares of the Portfolio.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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

2016-05-01

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. Because the Portfolio had not commenced investment operations prior to the date of this Prospectus, no portfolio turnover information is presented.

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

“Other Expenses” are based on estimated amounts for the current fiscal year.

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Investment Manager allocates the Portfolio’s assets among various US and non-US equity and fixed-income strategies managed by the Investment Manager in proportions consistent with the Investment Manager’s evaluation of various economic and other factors designed to estimate probabilities, including volatility. The Investment Manager makes allocation decisions among the strategies based on quantitative and qualitative analysis using a number of different tools, including proprietary software models and input from the Investment Manager’s research analysts. At any given time the Portfolio’s assets may not be allocated to all strategies.

A principal component of the Investment Manager’s investment process for the Portfolio is volatility management. The Investment Manager generally will seek to achieve, over a full market cycle, a level of volatility in the Portfolio’s performance of approximately 10%. Volatility, a risk measurement, measures the magnitude of up and down fluctuations in the value of a financial instrument or index over time.

As a consequence of allocating its assets among various of the Investment Manager’s investment strategies, the Portfolio may:

• invest in US and non-US equity and debt securities (including those of companies with business activities located in emerging market countries and securities issued by governments of such countries), depositary receipts and shares, currencies and related instruments, and structured notes

• invest in ETFs and similar products, which generally pursue a passive index-based strategy

• invest in securities of companies of any size or market capitalization

• invest in debt securities of any maturity or duration

• invest in securities of any particular quality or investment grade and, as a result, the Portfolio may invest significantly in securities rated below investment grade (e.g., lower than Baa by Moody’s or lower than BBB by S&P) (“junk bonds”) or securities that are unrated

• enter into swap agreements (including credit default swap agreements) and forward contracts, and may purchase and write put and covered call options, on securities, indexes and currencies, for hedging purposes (although it is not required to do so) or to seek to increase returns

Under normal market conditions, the Portfolio invests significantly (at least 40%—unless market conditions are not deemed favorable by the Investment Manager, in which case the Portfolio would invest at least 30%) in issuers organized or located outside the US or doing a substantial amount of business outside the US, securities denominated in a foreign currency or foreign currency forward contracts.

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.

Allocation Risk. The Portfolio’s ability to achieve its investment objective depends in part on the Investment Manager’s skill in determining the Portfolio’s allocation among investment strategies. The Investment Manager’s evaluations and assumptions underlying its allocation decisions may differ from actual market conditions.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

Volatility Management Risk. While the Investment Manager generally will seek to achieve, over a full market cycle, the level of volatility in the Portfolio’s performance as described above, there can be no guarantee that this will be achieved; actual or realized volatility for any particular period may be materially higher or lower depending on market conditions. In addition, the Investment Manager’s efforts to manage the Portfolio’s volatility can be expected, in a period of generally positive equity market returns, to reduce the Portfolio’s performance below what could be achieved without seeking to manage volatility and, thus, the Portfolio would generally be expected to underperform market indices that do not seek to achieve a specified level of volatility.

Value Investing and Growth Investing Risks. The Portfolio may invest a portion of its assets in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The Portfolio also may invest a portion of its assets in stocks believed by the Investment Manager to have the potential for growth, but that may not realize such perceived potential for extended periods of time or may never realize such perceived growth potential. Such stocks may be more volatile than other stocks because they can be more sensitive to investor perceptions of the issuing company’s growth potential. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

Quantitative Model Risk. The success of the Portfolio depends upon effectiveness of the Investment Manager’s quantitative model. A quantitative model, such as the risk and other models used by the Investment Manager requires adherence to a systematic, disciplined process. The Investment Manager’s ability to monitor and, if necessary, adjust its quantitative model could be adversely affected by various factors, including incorrect or outdated market and other data inputs. Factors that affect a security’s value can change over time, and these changes may not be reflected in the quantitative model. In addition, the factors used in quantitative analysis and the weight placed on those factors may not be predictive of a security’s value.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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. Currency investments could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies.

Fixed-Income and Debt Securities Risk. The market value of a debt security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The debt securities market can be susceptible to increases in volatility and decreases in liquidity. Prices of bonds and other debt securities tend to move inversely with changes in interest rates. Increases in volatility and decreases in liquidity may be caused by a rise in interest rates (or the expectation of a rise in interest rates). Interest rate risk is usually greater for fixed-income securities with longer maturities or durations.

The Portfolio’s investments in lower-rated, higher-yielding securities (“junk bonds”) are subject to greater credit risk than its higher rated investments. Credit risk is the risk that the issuer will not make interest or principal payments, or will not make payments on a timely basis. Non-investment grade securities tend to be more volatile, less liquid and are considered speculative. If there is a decline, or perceived decline, in the credit quality of a debt security (or any guarantor of payment on such security), the security’s value could fall, potentially lowering the Portfolio’s share price. The prices of non-investment grade securities, unlike investment grade debt securities, may fluctuate unpredictably and not necessarily inversely with changes in interest rates. The market for these securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline. Liquidity can decline unpredictably in response to overall economic conditions or credit tightening.

Some debt securities may give the issuer the option to call, or redeem, the securities before their maturity, and, during a time of declining interest rates, the Portfolio may have to reinvest the proceeds in an investment offering a lower yield (and the Portfolio may not fully benefit from any increase in the value of its portfolio holdings as a result of declining interest rates).

Structured notes are privately negotiated debt instruments where the principal and/or interest is determined by reference to a specified asset, market or rate, or the differential performance of two assets or markets. Structured notes can have risks of both debt securities and derivative transactions.

ETF Risk. Any investments in ETFs are subject to the risks of the investments of the ETFs, as well as to the general risks of investing in ETFs. Portfolio shares will bear not only the Portfolio’s management fees and operating expenses, but also their proportional share of the management fees and operating expenses of any ETFs in which the Portfolio invests. Shares of ETFs in which the Portfolio invests may trade at prices that vary from their NAVs, sometimes significantly. The shares of ETFs may trade at prices at, below or above their most recent NAV.

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.

Liquidity Risk. The lack of a readily available market may limit the ability of the Portfolio to sell certain securities at the time and price it would like. The size of certain securities offerings of emerging markets issuers may be relatively smaller in size than offerings in more developed markets and, in some cases, the Portfolio, by itself or together with other Portfolios or other accounts managed by the Investment Manager, may hold a position in a security that is large relative to the typical trading volume for that security; these factors can make it difficult for the Portfolio to dispose of the position at the desired time or price.

Forward Currency Contracts and Other Derivatives Risk. Forward currency contracts and other derivatives transactions, including those entered into for hedging purposes, may reduce returns or increase volatility, perhaps substantially. Swap agreements, forward currency contracts, over-the-counter options on securities, indexes and currencies, structured notes and other over-the-counter derivatives transactions are subject to the risk of default by the counterparty and can be illiquid. These derivatives transactions, as well as the exchange-traded options in which the Portfolio may invest, are subject to many of the risks of, and can be highly sensitive to changes in the value of, the related security, index or currency. As such, a small investment could have a potentially large impact on the Portfolio’s performance. Use of derivatives transactions, even if entered into for hedging purposes, may cause the Portfolio to experience losses greater than if the Portfolio had not engaged in such transactions.

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]

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Performance Bar Chart and Table

Performance Narrative [Text Block]

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Because the Portfolio has 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 that of a broad measure of market performance. After the Portfolio commences investment operations, performance information will be available at www.LazardNet.com or by calling (800) 823-6300. The Portfolio’s past performance is not necessarily an indication of how the Portfolio will perform in the future.

Performance 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 has 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.LazardNet.com

Performance Past Does Not Indicate Future [Text]

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The Portfolio’s past performance is not necessarily an indication of how the Portfolio will perform in the future.

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.30%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.15%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.25%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.90%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

92

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

341

Open Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.35%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.45%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.25%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

1.20%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

122

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

434

R6 Shares

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Management Fees

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.30%

^[1]

Total Annual Portfolio Operating Expenses

rr_ExpensesOverAssets

1.15%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.30%)

^[2]

Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement

rr_NetExpensesOverAssets

0.85%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

87

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

336

[1] "Other Expenses" are based on estimated amounts for the current fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed .90%, 1.20% and .85% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.

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Lazard Emerging Markets Equity Blend Portfolio

Lazard Emerging Markets Equity Blend Portfolio

Investment Objective

The Portfolio seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Lazard Emerging Markets Equity Blend Portfolio	Institutional Shares	Open Shares	R6 Shares
Redemption Fee (as a % of amount redeemed, on shares owned for 30 days or less)	1.00%	1.00%	1.00%

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Lazard Emerging Markets Equity Blend Portfolio		Institutional Shares	Open Shares	R6 Shares
Management Fees		1.00%	1.00%	1.00%
Distribution and Service (12b-1) Fees		none	0.25%	none
Other Expenses		0.28%	0.38%	0.28%	[1]
Total Annual Portfolio Operating Expenses		1.28%	1.63%	1.28%
Fee Waiver and Expense Reimbursement	[2]		0.03%	0.03%
Total Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement	[2]	1.28%	1.60%	1.25%

Example

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 fee waiver and expense reimbursement arrangement in year one only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Lazard Emerging Markets Equity Blend Portfolio (USD $)	1 Year	3 Years	5 Years	10 Years
Institutional Shares	130	406	702	1,545
Open Shares	163	511	884	1,930
R6 Shares	127	403	699	1,543

Portfolio Turnover

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 44% of the average value of its portfolio.

Principal Investment Strategies

The Portfolio invests primarily in equity securities, including common stocks, ADRs and GDRs, of non-US companies whose principal activities are located in emerging market countries.

Emerging market countries include all countries represented by the MSCI Emerging Markets Index, which currently includes: Brazil, Chile, China, Colombia, Czech Republic, Egypt, Greece, Hungary, India, Indonesia, Korea, Malaysia, Mexico, Peru, Philippines, Poland, Qatar, Russia, South Africa, Taiwan, Thailand, Turkey and United Arab Emirates.

The Investment Manager allocates the Portfolio’s assets between versions of the Investment Manager’s emerging markets relative value and relative growth investment strategies. In the emerging markets relative value strategy, assets are invested in companies that the Investment Manager believes are undervalued based on their earnings, cash flow or asset values. In the emerging markets relative growth strategy, the Investment Manager employs a relative growth investment philosophy that is based on value creation through the process of bottom-up stock selection.

The Investment Manager currently intends to maintain an allocation of approximately 40%-60% of the Portfolio’s assets in each strategy, but the allocation ranges could change in the future without prior notice to shareholders. The Investment Manager will make allocation decisions between the strategies based on quantitative and qualitative analysis through proprietary software models. The Investment Manager will periodically review the allocation of Portfolio assets between the strategies and modify the relative weightings to emphasize risk or to seek to mitigate risk exposures.

Under normal circumstances, the Portfolio invests at least 80% of its assets in equity securities of companies whose principal business activities are located in emerging market countries.

Principal Investment Risks

The value of your investment in the Portfolio will fluctuate, which means you could lose money.

Market Risk. Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Portfolio’s investments. 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.

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.

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.

Emerging Market Risk. 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. The economies of countries with emerging markets may be based predominantly on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme debt burdens or volatile inflation rates. The securities markets of emerging market countries have historically been extremely volatile. These market conditions may continue or worsen. Significant devaluation of emerging market currencies against the US dollar may occur subsequent to acquisition of investments denominated in emerging market currencies.

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 could be adversely affected by delays in, or a refusal to grant, repatriation of funds or conversion of emerging market currencies. The Investment Manager does not intend to actively hedge the Portfolio’s foreign currency exposure.

Value Investing and Growth Investing Risks. The Portfolio invests a portion of its assets in stocks believed by the Investment Manager to be undervalued, but that may not realize their perceived value for extended periods of time or may never realize their perceived value. The Portfolio also invests a portion of its assets in stocks believed by the Investment Manager to have the potential for growth, but that may not realize such perceived potential for extended periods of time or may never realize such perceived growth potential. Such stocks may be more volatile than other stocks because they can be more sensitive to investor perceptions of the issuing company’s growth potential. The stocks in which the Portfolio invests may respond differently to market and other developments than other types of stocks.

Quantitative Model Risk. The success of the Portfolio depends upon effectiveness of the Investment Manager’s quantitative model. A quantitative model, such as the risk and other models used by the Investment Manager requires adherence to a systematic, disciplined process. The Investment Manager’s ability to monitor and, if necessary, adjust its quantitative model could be adversely affected by various factors, including incorrect or outdated market and other data inputs. Factors that affect a security’s value can change over time, and these changes may not be reflected in the quantitative model. In addition, the factors used in quantitative analysis and the weight placed on those factors may not be predictive of a security’s value.

Small Cap Companies Risk. Small 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 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.

Allocation Risk. The Portfolio’s ability to achieve its investment objective depends in part on the Investment Manager’s skill in determining the Portfolio’s allocation between the investment strategies. The Investment Manager’s evaluations and assumptions underlying its allocation decisions may differ from actual market conditions.

Performance Bar Chart and Table Year-by-Year Total Returns for Institutional Shares As of 12/31

The accompanying bar chart and table provide some indication of the risks of investing in Lazard Emerging Markets Equity Blend Portfolio by showing the Portfolio’s year-by-year performance and its average annual performance compared to that of a broad measure of market performance. The bar chart shows how the performance of the Portfolio’s Institutional Shares has varied from year to year. Updated performance information is available at www.LazardNet.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.

Best Quarter:
3/31/12 17.59%

Worst Quarter:
9/30/11 -24.35%

Average Annual Total Returns (for the periods ended December 31, 2014)

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. Returns shown below for the Portfolio’s R6 Shares (which were not operational as of December 31, 2014) reflect the performance of the Portfolio’s Institutional Shares. R6 Shares would have had substantially similar returns as Institutional Shares because the share classes are invested in the same portfolio of securities, and the returns would differ only to the extent that the classes do not have the same expenses.

Average Annual Returns Lazard Emerging Markets Equity Blend Portfolio	1 Year	Life of Portfolio	Inception Date
Institutional Shares	(8.66%)	1.25%	May 28, 2010
Open Shares	(8.95%)	0.94%	May 28, 2010
R6 Shares	(8.66%)	1.25%
After Taxes on Distributions Institutional Shares	(8.94%)	1.08%
After Taxes on Distributions and Sale of Portfolio Shares Institutional Shares	(4.36%)	1.09%
MSCI Emerging Markets Index (reflects no deduction for fees, expenses or taxes)	(2.19%)	3.20%

[1] "Other Expenses" are based on estimated amounts for the current fiscal year, using "Other Expenses" for Institutional Shares from the last fiscal year.

[2] Reflects a contractual agreement by the Investment Manager to waive its fee and, if necessary, reimburse the Portfolio through May 1, 2016, to the extent Total Annual Portfolio Operating Expenses exceed 1.30%, 1.60% and 1.25% of the average daily net assets of the Portfolio's Institutional Shares, Open Shares and R6 Shares, respectively, exclusive of taxes, brokerage, interest on borrowings, fees and expenses of "Acquired Funds" and extraordinary expenses, and excluding shareholder redemption fees or other transaction fees. This agreement can only be amended by agreement of the Fund, upon approval by the Board, and the Investment Manager to lower the net amount shown and will terminate automatically in the event of termination of the Investment Management Agreement between the Investment Manager and the Fund, on behalf of the Portfolio.