485BPOS

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON

May 14, 2018

Registration Nos. 2-92633

811-04087

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 [ ]

Post-Effective Amendment No. 202                              [X]

and

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 [ ]

Amendment No. 203                    [X]

MANNING & NAPIER FUND, INC.

(Exact name of registrant as specified in charter)

290 Woodcliff Drive

Fairport, NY 14450

(Address of Principal Executive Offices) (Zip Code)

(Registrant’s Telephone Number, Including Area Code)

(585) 325-6880

Michele T. Mosca

c/o Manning & Napier Fund, Inc.

290 Woodcliff Drive

Fairport, NY 14450

(Name and Address of Agent for Service)

Copies to:

Timothy W. Levin, Esquire

Morgan, Lewis & Bockius, LLP

1701 Market St.

Philadelphia, PA 19103

It is proposed that this filing will become effective:

/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.

Title of Securities Being Registered: Investment Company Shares

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant duly certifies that it meets all of the requirements for effectiveness of this Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933 and has duly caused this Post-Effective Amendment to the Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the Village of Fairport and State of New York on the 14^th day of May 2018.

Manning & Napier Fund, Inc.

(Registrant)

By /s/ Michele T. Mosca

  Michele T. Mosca

  President

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

Signature	Title	Date
/s/ Michele T. Mosca Michele T. Mosca	President, Principal Executive Officer, Director	May 14, 2018
/s/        *                  Harris H. Rusitzky	Director	May 14, 2018
/s/        *                  Peter L. Faber	Director	May 14, 2018
/s/        *                  Stephen B. Ashley	Director	May 14, 2018
/s/        *                  Paul A. Brooke	Director	May 14, 2018
/s/        *                  Chester N. Watson	Director	May 14, 2018
/s/ Christine Glavin Christine Glavin	Principal Financial Officer, Chief Financial Officer, Treasurer	May 14, 2018

* By: /s/ Christine Glavin

              Christine Glavin

Pursuant to powers of attorney dated November 17, 2016 and January 10, 2017. See Item 28(q) of this Registration Statement.

Exhibit Index

EX-101.ins	XBRL Instance Document
EX-101.sch	XBRL Taxonomy Extension Schema Document
EX-101.cal	XBRL Taxonomy Extension Calculation Linkbase Document
EX-101.lab	XBRL Taxonomy Extension Labels Linkbase
EX-101.pre	XBRL Taxonomy Extension Presentation Linkbase Document
EX-101.def	XBRL Taxonomy Extension Definition Linkbase

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Document Type	dei_DocumentType	485BPOS
Document Period End Date	dei_DocumentPeriodEndDate	Dec. 31, 2017
Registrant Name	dei_EntityRegistrantName	MANNING & NAPIER FUND, INC.
Central Index Key	dei_EntityCentralIndexKey	0000751173
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Apr. 26, 2018
Document Effective Date	dei_DocumentEffectiveDate	Apr. 30, 2018
Prospectus Date	rr_ProspectusDate	May 01, 2018

XML

Core Bond Series

Core Bond Series

Summary Section

Investment Goal

The Series’ investment objective is to provide long-term total return by investing primarily in fixed income securities.

Fees and Expenses

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

CORE BOND SERIES

Shareholder Fees (paid
directly from your investment)

Shareholder Fees - Core Bond Series - USD ($)	CLASS I	CLASS S
Shareholder Fees (paid directly from your investment)	none	none

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

Annual Fund Operating Expenses - Core Bond Series		CLASS I	CLASS S
Management Fees		0.40%	0.40%
Distribution and Service (12b-1) Fees		none	none
Other Expenses		0.12%	0.37%
Shareholder Services Fee		none	0.25%
Remainder of Other Expenses		0.12%	0.12%
Total Annual Fund Operating Expenses	[1]	0.52%	0.77%
Less Fee Waiver and/or Expense Reimbursement	[2]	(0.07%)	(0.07%)
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1]	0.45%	0.70%

Example

The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same (taking into account the Advisor's contractual expense limitation for the first year only). Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example - Core Bond Series - USD ($)	AFTER 1 YEAR	AFTER 3 YEARS	AFTER 5 YEARS	AFTER 10 YEARS
CLASS I	46	160	284	646
CLASS S	72	239	421	948

Portfolio Turnover

The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 48% of the average value of its portfolio.

Principal Investment Strategies

The Series will invest, under normal circumstances, at least 80% of its net assets in investment grade bonds and other financial instruments, primarily exchange-traded funds (ETFs), with economic characteristics similar to bonds. For purposes of this policy, bonds may include U.S. dollar denominated fixed income securities issued by U.S. and foreign corporations and governments, inflation protected securities, convertible securities, pass-through securities, and mortgage dollar rolls, which are transactions in which the Series sells a mortgage-backed security and simultaneously contracts to purchase similar securities on a specified future date at a predetermined price. The corporate bonds may be issued by domestic corporations, foreign entities (e.g., yankee bonds), and/or supranational entities, such as the World Bank. Pass-through securities are generally issued by domestic entities (such as GNMA, FNMA, and FHLMC) and entitle the holders to a pro rata share of the cash flows generated by the instruments underlying the security (mortgages, credit card receivables, car loans, etc.). The Series may purchase shares of ETFs, including to establish a diversified position in a particular market sector or to manage cash flows. The Advisor believes that purchasing ETFs may allow it to manage the Series’ portfolio more efficiently than would otherwise be possible.

Bond Selection Process — When investing in corporate and pass-through securities, the Advisor attempts to identify sectors, as well as individual securities within those sectors, that offer yields and credit/prepayment spreads sufficient to compensate the Series for the risks specific to a given sector or security. Credit spreads are a measure of the difference between corporate bonds’ yields to maturity and those of U.S. Treasury securities with similar maturities; this difference compensates investors for the credit risk inherent in corporate bonds. Prepayment spreads quantify the additional yield paid by mortgage-backed bonds relative to U.S. Treasury securities to compensate investors for the risk that mortgage-backed securities’ prepayments will vary over time.

In analyzing the relative attractiveness of sectors and/or individual securities, the Advisor considers:

• The relevant economic conditions and sector trends.

• The interest rate sensitivities of the particular sectors and securities.

• The yield differentials across sectors, credit qualities, pass-through security types, and maturities.

• “Bottom-up” factors such as issuer-specific credit metrics for corporate bonds and coupon, prepayment, and convexity components (which reflect changing interest rate sensitivities) of pass-through securities.

Maturity and Portfolio Duration — The Series is not subject to any maturity or duration restrictions but will vary its average dollar weighted portfolio maturity and duration depending on the Advisor’s outlook for yields. For example, the Advisor may invest in longer-term bonds when it expects yields to fall in order to realize gains for the Series. Likewise, the Advisor may invest in shorter-term bonds when it expects yields to rise. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security’s price to changes in yields. The prices of fixed income securities with shorter durations generally will be less affected by changes in yields than the prices of fixed income securities with longer durations. For example, a 10 year duration means the fixed income security will decrease in value by 10% if yields rise 1% and increase in value by 10% if yields fall 1%.

Credit Quality — The Series will typically invest in investment grade securities, those securities rated BBB- or above by S&P or Baa3 or above by Moody’s (or determined to be of equivalent quality by the Advisor).

The Series may buy and sell portfolio securities actively. If it does, its portfolio turnover rate and transaction costs will rise, which may lower fund performance and may increase the likelihood of capital gain distributions.

Securities issued by governments and supranational entities may be sold to adjust the Series' duration and/or yield curve positioning.

Other securities may be sold for one or more of the following reasons:

• they no longer meet the selection criteria under which they were purchased;

• their relative value has declined (the spread has tightened such that they are no longer considered attractively priced);

• a more attractive investment opportunity is identified.

There are no prescribed limits on the sector allocation of the Series' investments and, from time to time, the Series may focus its investments in one or more sectors.

Principal Risks of Investing in the Series

As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series.

Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect.

Market risk — Because the Series invests in bonds, the value of your investment will fluctuate in response to changes in interest rates, credit spreads, and prepayment spreads, even though such changes will not affect the interest income derived from portfolio securities. You could lose money on your investment in the Series or the Series could underperform if any of the following occurs:

• U.S. and/or foreign bond markets decline.

• The issuer of a corporate bond owned by the Series defaults on its obligation to pay principal and/or interest or has its credit rating downgraded; this risk is greater for lower quality bonds.

• Interest rates rise, credit spreads widen, and/or prepayment spreads widen. These events alone or in combination can cause bond prices to fall and reduce the value of the Series’ portfolio. Longer-term bonds have greater sensitivity to, and will therefore experience greater fluctuations in response to, interest rate changes than shorter-term bonds.

• Market volatility and/or prepayment spreads change to such a degree that prepayment uncertainty/risks are reassessed; the greater the uncertainty/risk, the wider the requisite prepayment spread.

Current market conditions may pose heightened risks for the Series. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the Series. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, the Series' value may fluctuate and/or the Series may experience increased redemptions from shareholders, which may impact the Series’ liquidity or force the Series to sell securities into a declining or illiquid market.

Risk of mortgage dollar rolls — The Series’ mortgage dollar rolls could lose money if the price of the mortgage-backed securities sold falls below the agreed upon repurchase price, or if the counterparty is unable to honor the agreement.

Foreign securities risk — Because the Series may invest in securities of foreign issuers, the Series is subject to additional risks. These include risks of adverse changes in foreign economic, political, regulatory and other conditions. The prices of foreign fixed income securities may, at times, move in a different direction than the prices of fixed income securities issued in the United States.

Risks related to ETFs — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio of securities. The Series will also bear its proportionate share of the expenses of the purchased ETF in addition to its own expenses.

Inflation protected security risk — The value of inflation protected fixed income securities, including Treasury Inflation Protected Securities (TIPS), generally will fluctuate in response to changes in “real” interest rates, generally decreasing when real interest rates rise and increasing when real interest rates fall. Real interest rates represent nominal (or stated) interest rates reduced by the expected impact of inflation. In addition, interest payments on inflation-indexed securities will generally vary up or down along with the rate of inflation.

Convertible securities risk — The Series’ investments in convertible securities are subject to interest rate risk and credit risk, similar to fixed income securities. In addition, they are also subject to the risk that the price of the underlying common stock will go down, which may cause a proportionate (or disproportionate) decline in the price of the convertible security.

Mortgage- and asset-backed securities risks — The Series' investments in mortgage-backed and asset-backed securities may subject it to the following additional risks:

• Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations.

• Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities, and asset-backed securities may not have the benefit of any security interest in the related assets.

Sector focus risk — Because the Series' investments may, from time to time, be more heavily invested in a particular sector or sectors, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those sectors. As a result, the Series' share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of sectors.

Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series' management or performance.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders.

The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.

Summary of Past Performance

The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Class S shares of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Class S and Class I shares of the Series for different periods compare to those of a broad-based securities index. The Series’ Class I shares commenced operations on August 3, 2015, and all performance below for the periods prior to that date reflect the performance and average annual total returns of the Series’ Class S shares. Because the Class I shares of the Series invest in the same portfolio of securities, returns for the Class I shares will be substantially similar to those of the Class S shares. Performance will be different only to the extent that the Class I shares have lower expenses. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.

Calendar Years Ended December 31

Quarterly Returns
Highest (quarter ended 09/30/09): 6.81%
Lowest (quarter ended 09/30/08): (3.80)%

AVERAGE ANNUAL TOTAL RETURNS
FOR PERIODS ENDED DECEMBER 31, 2017

Average Annual Total Returns - Core Bond Series	1 Year	5 Years	10 Years	Since Inception	Inception Date
Class S Shares	2.91%	1.73%	4.55%	4.45%	Apr. 21, 2005
Class S Shares | Return After Taxes on Distributions	2.08%	0.45%	3.15%	3.07%	Apr. 21, 2005
Class S Shares | Return After Taxes on Distributions and Sale of Series Shares	1.67%	0.83%	3.06%	2.98%	Apr. 21, 2005
Class I Shares	3.10%	1.86%	4.61%	4.50%	Apr. 21, 2005
Bloomberg Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	3.54%	2.10%	4.01%	4.20%	Apr. 21, 2005

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The after-tax figures are shown for one share class only, and would be different for the other share class. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

[2] Manning & Napier Advisors, LLC (the Advisor) has contractually agreed to limit its fees and reimburse expenses to the extent necessary so that the total direct annual fund operating expenses of each Class, exclusive of a Class’s Shareholder Services Fee, do not exceed 0.45% of each Class’s average daily net assets. This contractual waiver will continue until at least April 30, 2019 and may not be amended or terminated by the Advisor prior to such date without the approval of the Series’ Board of Directors. The Advisor’s agreement to limit each Class’s operating expenses is limited to direct operating expenses, and, therefore, does not apply to acquired fund fees and expenses, which are indirect expenses incurred by the Series through its investments in other investment companies.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	MANNING & NAPIER FUND, INC.
Prospectus Date	rr_ProspectusDate	May 01, 2018
Core Bond Series
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Core Bond Series Summary Section
Objective [Heading]	rr_ObjectiveHeading	Investment Goal
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Series’ investment objective is to provide long-term total return by investing primarily in fixed income securities.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Series.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	CORE BOND SERIES Shareholder Fees (paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund 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	April 30, 2019
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 48% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	48.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same (taking into account the Advisor's contractual expense limitation for the first year 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 Series will invest, under normal circumstances, at least 80% of its net assets in investment grade bonds and other financial instruments, primarily exchange-traded funds (ETFs), with economic characteristics similar to bonds. For purposes of this policy, bonds may include U.S. dollar denominated fixed income securities issued by U.S. and foreign corporations and governments, inflation protected securities, convertible securities, pass-through securities, and mortgage dollar rolls, which are transactions in which the Series sells a mortgage-backed security and simultaneously contracts to purchase similar securities on a specified future date at a predetermined price. The corporate bonds may be issued by domestic corporations, foreign entities (e.g., yankee bonds), and/or supranational entities, such as the World Bank. Pass-through securities are generally issued by domestic entities (such as GNMA, FNMA, and FHLMC) and entitle the holders to a pro rata share of the cash flows generated by the instruments underlying the security (mortgages, credit card receivables, car loans, etc.). The Series may purchase shares of ETFs, including to establish a diversified position in a particular market sector or to manage cash flows. The Advisor believes that purchasing ETFs may allow it to manage the Series’ portfolio more efficiently than would otherwise be possible. Bond Selection Process — When investing in corporate and pass-through securities, the Advisor attempts to identify sectors, as well as individual securities within those sectors, that offer yields and credit/prepayment spreads sufficient to compensate the Series for the risks specific to a given sector or security. Credit spreads are a measure of the difference between corporate bonds’ yields to maturity and those of U.S. Treasury securities with similar maturities; this difference compensates investors for the credit risk inherent in corporate bonds. Prepayment spreads quantify the additional yield paid by mortgage-backed bonds relative to U.S. Treasury securities to compensate investors for the risk that mortgage-backed securities’ prepayments will vary over time. In analyzing the relative attractiveness of sectors and/or individual securities, the Advisor considers: The relevant economic conditions and sector trends. The interest rate sensitivities of the particular sectors and securities. The yield differentials across sectors, credit qualities, pass-through security types, and maturities. “Bottom-up” factors such as issuer-specific credit metrics for corporate bonds and coupon, prepayment, and convexity components (which reflect changing interest rate sensitivities) of pass-through securities. Maturity and Portfolio Duration — The Series is not subject to any maturity or duration restrictions but will vary its average dollar weighted portfolio maturity and duration depending on the Advisor’s outlook for yields. For example, the Advisor may invest in longer-term bonds when it expects yields to fall in order to realize gains for the Series. Likewise, the Advisor may invest in shorter-term bonds when it expects yields to rise. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security’s price to changes in yields. The prices of fixed income securities with shorter durations generally will be less affected by changes in yields than the prices of fixed income securities with longer durations. For example, a 10 year duration means the fixed income security will decrease in value by 10% if yields rise 1% and increase in value by 10% if yields fall 1%. Credit Quality — The Series will typically invest in investment grade securities, those securities rated BBB- or above by S&P or Baa3 or above by Moody’s (or determined to be of equivalent quality by the Advisor). The Series may buy and sell portfolio securities actively. If it does, its portfolio turnover rate and transaction costs will rise, which may lower fund performance and may increase the likelihood of capital gain distributions. Securities issued by governments and supranational entities may be sold to adjust the Series' duration and/or yield curve positioning. Other securities may be sold for one or more of the following reasons: they no longer meet the selection criteria under which they were purchased; their relative value has declined (the spread has tightened such that they are no longer considered attractively priced); a more attractive investment opportunity is identified. There are no prescribed limits on the sector allocation of the Series' investments and, from time to time, the Series may focus its investments in one or more sectors.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Series
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series. Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect. Market risk — Because the Series invests in bonds, the value of your investment will fluctuate in response to changes in interest rates, credit spreads, and prepayment spreads, even though such changes will not affect the interest income derived from portfolio securities. You could lose money on your investment in the Series or the Series could underperform if any of the following occurs: U.S. and/or foreign bond markets decline. The issuer of a corporate bond owned by the Series defaults on its obligation to pay principal and/or interest or has its credit rating downgraded; this risk is greater for lower quality bonds. Interest rates rise, credit spreads widen, and/or prepayment spreads widen. These events alone or in combination can cause bond prices to fall and reduce the value of the Series’ portfolio. Longer-term bonds have greater sensitivity to, and will therefore experience greater fluctuations in response to, interest rate changes than shorter-term bonds. Market volatility and/or prepayment spreads change to such a degree that prepayment uncertainty/risks are reassessed; the greater the uncertainty/risk, the wider the requisite prepayment spread. Current market conditions may pose heightened risks for the Series. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the Series. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, the Series' value may fluctuate and/or the Series may experience increased redemptions from shareholders, which may impact the Series’ liquidity or force the Series to sell securities into a declining or illiquid market. Risk of mortgage dollar rolls — The Series’ mortgage dollar rolls could lose money if the price of the mortgage-backed securities sold falls below the agreed upon repurchase price, or if the counterparty is unable to honor the agreement. Foreign securities risk — Because the Series may invest in securities of foreign issuers, the Series is subject to additional risks. These include risks of adverse changes in foreign economic, political, regulatory and other conditions. The prices of foreign fixed income securities may, at times, move in a different direction than the prices of fixed income securities issued in the United States. Risks related to ETFs — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio of securities. The Series will also bear its proportionate share of the expenses of the purchased ETF in addition to its own expenses. Inflation protected security risk — The value of inflation protected fixed income securities, including Treasury Inflation Protected Securities (TIPS), generally will fluctuate in response to changes in “real” interest rates, generally decreasing when real interest rates rise and increasing when real interest rates fall. Real interest rates represent nominal (or stated) interest rates reduced by the expected impact of inflation. In addition, interest payments on inflation-indexed securities will generally vary up or down along with the rate of inflation. Convertible securities risk — The Series’ investments in convertible securities are subject to interest rate risk and credit risk, similar to fixed income securities. In addition, they are also subject to the risk that the price of the underlying common stock will go down, which may cause a proportionate (or disproportionate) decline in the price of the convertible security. Mortgage- and asset-backed securities risks — The Series' investments in mortgage-backed and asset-backed securities may subject it to the following additional risks: Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations. Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities, and asset-backed securities may not have the benefit of any security interest in the related assets. Sector focus risk — Because the Series' investments may, from time to time, be more heavily invested in a particular sector or sectors, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those sectors. As a result, the Series' share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of sectors. Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series' management or performance. Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders. The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the Series.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Summary of Past Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Class S shares of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Class S and Class I shares of the Series for different periods compare to those of a broad-based securities index. The Series’ Class I shares commenced operations on August 3, 2015, and all performance below for the periods prior to that date reflect the performance and average annual total returns of the Series’ Class S shares. Because the Class I shares of the Series invest in the same portfolio of securities, returns for the Class I shares will be substantially similar to those of the Class S shares. Performance will be different only to the extent that the Class I shares have lower expenses. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Class S shares of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Class S and Class I shares of the Series for different periods compare to those of a broad-based securities index.
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.manning-napier.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Calendar Years Ended December 31
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Quarterly Returns Highest (quarter ended 09/30/09): 6.81% Lowest (quarter ended 09/30/08): (3.80)%
Performance Table Heading	rr_PerformanceTableHeading	AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2017
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	After-tax returns are not relevant to investors who hold their Series 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	The after-tax figures are shown for one share class only, and would be different for the other share class.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The after-tax figures are shown for one share class only, and would be different for the other share class. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Core Bond Series | CLASS I
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees (paid directly from your investment)	rr_ShareholderFeeOther	none
Management Fees	rr_ManagementFeesOverAssets	0.40%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Shareholder Services Fee	rr_Component1OtherExpensesOverAssets	none
Remainder of Other Expenses	rr_Component2OtherExpensesOverAssets	0.12%
Other Expenses	rr_OtherExpensesOverAssets	0.12%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.52%	[1]
Less Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.07%)	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.45%	[1]
AFTER 1 YEAR	rr_ExpenseExampleYear01	$ 46
AFTER 3 YEARS	rr_ExpenseExampleYear03	160
AFTER 5 YEARS	rr_ExpenseExampleYear05	284
AFTER 10 YEARS	rr_ExpenseExampleYear10	$ 646
1 Year	rr_AverageAnnualReturnYear01	3.10%
5 Years	rr_AverageAnnualReturnYear05	1.86%
10 Years	rr_AverageAnnualReturnYear10	4.61%
Since Inception	rr_AverageAnnualReturnSinceInception	4.50%
Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 21, 2005
Core Bond Series | CLASS S
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees (paid directly from your investment)	rr_ShareholderFeeOther	none
Management Fees	rr_ManagementFeesOverAssets	0.40%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Shareholder Services Fee	rr_Component1OtherExpensesOverAssets	0.25%
Remainder of Other Expenses	rr_Component2OtherExpensesOverAssets	0.12%
Other Expenses	rr_OtherExpensesOverAssets	0.37%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.77%	[1]
Less Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.07%)	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.70%	[1]
AFTER 1 YEAR	rr_ExpenseExampleYear01	$ 72
AFTER 3 YEARS	rr_ExpenseExampleYear03	239
AFTER 5 YEARS	rr_ExpenseExampleYear05	421
AFTER 10 YEARS	rr_ExpenseExampleYear10	$ 948
2008	rr_AnnualReturn2008	1.66%
2009	rr_AnnualReturn2009	11.46%
2010	rr_AnnualReturn2010	8.97%
2011	rr_AnnualReturn2011	5.68%
2012	rr_AnnualReturn2012	9.74%
2013	rr_AnnualReturn2013	(0.79%)
2014	rr_AnnualReturn2014	3.62%
2015	rr_AnnualReturn2015	0.44%
2016	rr_AnnualReturn2016	2.53%
2017	rr_AnnualReturn2017	2.91%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Highest
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Sep. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	6.81%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Lowest
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(3.80%)
1 Year	rr_AverageAnnualReturnYear01	2.91%
5 Years	rr_AverageAnnualReturnYear05	1.73%
10 Years	rr_AverageAnnualReturnYear10	4.55%
Since Inception	rr_AverageAnnualReturnSinceInception	4.45%
Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 21, 2005
Core Bond Series | Return After Taxes on Distributions | CLASS S
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	2.08%
5 Years	rr_AverageAnnualReturnYear05	0.45%
10 Years	rr_AverageAnnualReturnYear10	3.15%
Since Inception	rr_AverageAnnualReturnSinceInception	3.07%
Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 21, 2005
Core Bond Series | Return After Taxes on Distributions and Sale of Series Shares | CLASS S
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	1.67%
5 Years	rr_AverageAnnualReturnYear05	0.83%
10 Years	rr_AverageAnnualReturnYear10	3.06%
Since Inception	rr_AverageAnnualReturnSinceInception	2.98%
Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 21, 2005
Core Bond Series | Bloomberg Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	3.54%
5 Years	rr_AverageAnnualReturnYear05	2.10%
10 Years	rr_AverageAnnualReturnYear10	4.01%
Since Inception	rr_AverageAnnualReturnSinceInception	4.20%
Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 21, 2005

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

[2] Manning & Napier Advisors, LLC (the Advisor) has contractually agreed to limit its fees and reimburse expenses to the extent necessary so that the total direct annual fund operating expenses of each Class, exclusive of a Class’s Shareholder Services Fee, do not exceed 0.45% of each Class’s average daily net assets. This contractual waiver will continue until at least April 30, 2019 and may not be amended or terminated by the Advisor prior to such date without the approval of the Series’ Board of Directors. The Advisor’s agreement to limit each Class’s operating expenses is limited to direct operating expenses, and, therefore, does not apply to acquired fund fees and expenses, which are indirect expenses incurred by the Series through its investments in other investment companies.

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Diversified Tax Exempt Series

Diversified Tax Exempt Series

Summary Section

Investment Goal

The Series’ investment objective is to provide as high a level of current income exempt from federal income tax as the Advisor believes is consistent with the preservation of capital.

Fees and Expenses

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

DIVERSIFIED TAX EXEMPT SERIES

Shareholder Fees
(paid directly from your investment)

Shareholder Fees	Diversified Tax Exempt Series Diversified Tax Exempt Series USD ($)
Shareholder Fees (paid directly from your investment)	none

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

Annual Fund Operating Expenses	Diversified Tax Exempt Series Diversified Tax Exempt Series
Management Fees	0.50%
Distribution and Service (12b-1) Fees	none
Other Expenses	0.08%
Total Annual Fund Operating Expenses	0.58%	[1]

Example

The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	AFTER 1 YEAR	AFTER 3 YEARS	AFTER 5 YEARS	AFTER 10 YEARS
Diversified Tax Exempt Series | Diversified Tax Exempt Series | USD ($)	59	186	324	726

Portfolio Turnover

The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 4% of the average value of its portfolio.

Principal Investment Strategies

The Series invests primarily in municipal bonds and other securities the income from which is exempt from federal income tax. The Series will, under normal circumstances, invest at least 80% of its net assets in securities the income from which is exempt from federal income tax, including the Alternative Minimum Tax (AMT). The main issuers of these securities are state and local agencies. In selecting investments for the Series, the Advisor attempts to balance the Series' goals of high income and capital preservation. With this approach, the Advisor attempts to build a portfolio that it believes provides the opportunity to earn current income; however, the Advisor will only purchase investment grade securities, or those securities determined by the Advisor to be of equivalent quality, and will maintain other selection criteria in an attempt to avoid permanent capital loss.

Bond Selection Process — The Advisor emphasizes those bond market sectors and selects for the Series those securities that it believes offer yields sufficient to compensate the investor for the risks specific to the security or sector. In analyzing the relative attractiveness of sectors and individual securities, the Advisor considers:

• The interest rate sensitivity of each security.

• The narrowing or widening of interest rate spreads between sectors, securities of different credit quality or securities of different maturities.

Maturity and Portfolio Duration — The Series is not subject to any maturity or duration restrictions but will vary its average dollar weighted portfolio maturity and duration depending on the Advisor’s outlook for yields. For example, the Advisor may invest in longer-term bonds when it expects yields to fall in order to realize gains for the Series. Likewise, the Advisor may invest in shorter-term bonds when it expects yields to rise. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security’s price to changes in yields. The prices of fixed income securities with shorter durations generally will be less affected by changes in yields than the prices of fixed income securities with longer durations. For example, a 10 year duration means the fixed income security will decrease in value by 10% if yields rise 1% and increase in value by 10% if yields fall 1%.

Credit Quality — The Series’ investments will be limited to investment grade securities, those rated BBB- or above by S&P or Baa3 or above by Moody’s or determined by the Advisor to be of equivalent quality.

The Series may invest in taxable investments, including obligations of the U.S. Government, its agencies or instrumentalities. The Series may also invest in money market instruments or hold its assets in cash. These investments may cause the Series to make a taxable distribution to shareholders.

The Advisor will consider selling a security for one or more of the following reasons:

• to adjust the Series' duration and/or yield curve positioning;

• there is a deterioration in the credit quality of the issuer;

• the security's relative value has declined (the spread has tightened such that the security is no longer considered attractively priced); or

• a more attractive investment opportunity is identified.

Principal Risks of Investing in the Series

As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series.

Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect.

Market risk — Because the Series invests in bonds, the value of your investment will fluctuate in response to changes in interest rates and/or credit spreads, even though such changes will not affect the interest income derived from portfolio securities. You could lose money on your investment in the Series or the Series could underperform if any of the following occurs:

• U.S. and/or foreign bond markets decline.

• The issuer of a bond owned by the Series defaults on its obligation to pay principal or interest or has its credit rating downgraded.

• Interest rates rise and/or credit spreads widen. These events alone or in combination can cause bond prices to fall and reduce the value of the Series’ portfolio. Longer-term bonds have greater sensitivity to, and will therefore experience greater fluctuations in response to, interest rate changes than shorter-term bonds.

• Market volatility and/or prepayment spreads change to such a degree that prepayment uncertainty/risks are reassessed; the greater the uncertainty/risk, the wider the requisite prepayment spread.

Current market conditions may pose heightened risks for the Series. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the Series. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, the Series' value may fluctuate and/or the Series may experience increased redemptions from shareholders, which may impact the Series' liquidity or force the Series to sell securities into a declining or illiquid market.

Municipal bond risk — In addition to the general risks of bond funds, the Series is subject to the following additional risks due to its focus on municipal bonds:

• Changes in the financial condition of municipal issuers may adversely affect the value of the Series’ securities.

• Economic or political changes may affect the ability of issuers of municipal securities to repay principal and to make interest payments on securities owned by the Series.

• Poor statewide or local economic results or changing political sentiments may reduce tax revenues and increase the expenses of municipal issuers, making it more difficult for them to meet their obligations.

Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series' management or performance.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders.

The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.

Summary of Past Performance

The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Series for different periods compare to those of a broad-based securities index. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.

Calendar Years Ended December 31

Quarterly Returns
Highest (quarter ended 09/30/09): 7.31%
Lowest (quarter ended 12/31/10): (5.52)%

AVERAGE ANNUAL TOTAL RETURNS
FOR PERIODS ENDED DECEMBER 31, 2017

Average Annual Total Returns - Diversified Tax Exempt Series	1 Year	5 Years	10 Years	Since Inception	Inception Date
Diversified Tax Exempt Series	2.37%	0.65%	2.50%	3.76%	Feb. 14, 1994
Diversified Tax Exempt Series | Return After Taxes on Distributions	2.37%	0.56%	2.43%	3.71%	Feb. 14, 1994
Diversified Tax Exempt Series | Return After Taxes on Distributions and Sale of Series Shares	1.89%	0.72%	2.42%	3.66%	Feb. 14, 1994
ICE BofA Merrill Lynch 1-12 Year Municipal Bond Index (reflects no deduction for fees, expenses, or taxes)	3.20%	1.93%	3.52%	4.49%	Feb. 14, 1994

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratio in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	MANNING & NAPIER FUND, INC.
Prospectus Date	rr_ProspectusDate	May 01, 2018
Diversified Tax Exempt Series
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Diversified Tax Exempt Series Summary Section
Objective [Heading]	rr_ObjectiveHeading	Investment Goal
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Series’ investment objective is to provide as high a level of current income exempt from federal income tax as the Advisor believes is consistent with the preservation of capital.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Series.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	DIVERSIFIED TAX EXEMPT SERIES Shareholder Fees (paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund 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 Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 4% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	4.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	The total annual fund operating expenses in this fee table may not correlate to the expense ratio in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ 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 Series invests primarily in municipal bonds and other securities the income from which is exempt from federal income tax. The Series will, under normal circumstances, invest at least 80% of its net assets in securities the income from which is exempt from federal income tax, including the Alternative Minimum Tax (AMT). The main issuers of these securities are state and local agencies. In selecting investments for the Series, the Advisor attempts to balance the Series' goals of high income and capital preservation. With this approach, the Advisor attempts to build a portfolio that it believes provides the opportunity to earn current income; however, the Advisor will only purchase investment grade securities, or those securities determined by the Advisor to be of equivalent quality, and will maintain other selection criteria in an attempt to avoid permanent capital loss. Bond Selection Process — The Advisor emphasizes those bond market sectors and selects for the Series those securities that it believes offer yields sufficient to compensate the investor for the risks specific to the security or sector. In analyzing the relative attractiveness of sectors and individual securities, the Advisor considers: The interest rate sensitivity of each security. The narrowing or widening of interest rate spreads between sectors, securities of different credit quality or securities of different maturities. Maturity and Portfolio Duration — The Series is not subject to any maturity or duration restrictions but will vary its average dollar weighted portfolio maturity and duration depending on the Advisor’s outlook for yields. For example, the Advisor may invest in longer-term bonds when it expects yields to fall in order to realize gains for the Series. Likewise, the Advisor may invest in shorter-term bonds when it expects yields to rise. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security’s price to changes in yields. The prices of fixed income securities with shorter durations generally will be less affected by changes in yields than the prices of fixed income securities with longer durations. For example, a 10 year duration means the fixed income security will decrease in value by 10% if yields rise 1% and increase in value by 10% if yields fall 1%. Credit Quality — The Series’ investments will be limited to investment grade securities, those rated BBB- or above by S&P or Baa3 or above by Moody’s or determined by the Advisor to be of equivalent quality. The Series may invest in taxable investments, including obligations of the U.S. Government, its agencies or instrumentalities. The Series may also invest in money market instruments or hold its assets in cash. These investments may cause the Series to make a taxable distribution to shareholders. The Advisor will consider selling a security for one or more of the following reasons: to adjust the Series' duration and/or yield curve positioning; there is a deterioration in the credit quality of the issuer; the security's relative value has declined (the spread has tightened such that the security is no longer considered attractively priced); or a more attractive investment opportunity is identified.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Series
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series. Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect. Market risk — Because the Series invests in bonds, the value of your investment will fluctuate in response to changes in interest rates and/or credit spreads, even though such changes will not affect the interest income derived from portfolio securities. You could lose money on your investment in the Series or the Series could underperform if any of the following occurs: U.S. and/or foreign bond markets decline. The issuer of a bond owned by the Series defaults on its obligation to pay principal or interest or has its credit rating downgraded. Interest rates rise and/or credit spreads widen. These events alone or in combination can cause bond prices to fall and reduce the value of the Series’ portfolio. Longer-term bonds have greater sensitivity to, and will therefore experience greater fluctuations in response to, interest rate changes than shorter-term bonds. Market volatility and/or prepayment spreads change to such a degree that prepayment uncertainty/risks are reassessed; the greater the uncertainty/risk, the wider the requisite prepayment spread. Current market conditions may pose heightened risks for the Series. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the Series. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, the Series' value may fluctuate and/or the Series may experience increased redemptions from shareholders, which may impact the Series' liquidity or force the Series to sell securities into a declining or illiquid market. Municipal bond risk — In addition to the general risks of bond funds, the Series is subject to the following additional risks due to its focus on municipal bonds: Changes in the financial condition of municipal issuers may adversely affect the value of the Series’ securities. Economic or political changes may affect the ability of issuers of municipal securities to repay principal and to make interest payments on securities owned by the Series. Poor statewide or local economic results or changing political sentiments may reduce tax revenues and increase the expenses of municipal issuers, making it more difficult for them to meet their obligations. Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series' management or performance. Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders. The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the Series.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Summary of Past Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Series for different periods compare to those of a broad-based securities index. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Series for different periods compare to those of a broad-based securities index.
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.manning-napier.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Calendar Years Ended December 31
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Quarterly Returns Highest (quarter ended 09/30/09): 7.31% Lowest (quarter ended 12/31/10): (5.52)%
Performance Table Heading	rr_PerformanceTableHeading	AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2017
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Diversified Tax Exempt Series | Diversified Tax Exempt Series
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees (paid directly from your investment)	rr_ShareholderFeeOther	none
Management Fees	rr_ManagementFeesOverAssets	0.50%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.08%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.58%	[1]
AFTER 1 YEAR	rr_ExpenseExampleYear01	$ 59
AFTER 3 YEARS	rr_ExpenseExampleYear03	186
AFTER 5 YEARS	rr_ExpenseExampleYear05	324
AFTER 10 YEARS	rr_ExpenseExampleYear10	$ 726
2008	rr_AnnualReturn2008	(1.79%)
2009	rr_AnnualReturn2009	12.75%
2010	rr_AnnualReturn2010	0.41%
2011	rr_AnnualReturn2011	8.24%
2012	rr_AnnualReturn2012	3.01%
2013	rr_AnnualReturn2013	(1.28%)
2014	rr_AnnualReturn2014	1.51%
2015	rr_AnnualReturn2015	1.51%
2016	rr_AnnualReturn2016	(0.83%)
2017	rr_AnnualReturn2017	2.37%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Highest
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Sep. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	7.31%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Lowest
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2010
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(5.52%)
1 Year	rr_AverageAnnualReturnYear01	2.37%
5 Years	rr_AverageAnnualReturnYear05	0.65%
10 Years	rr_AverageAnnualReturnYear10	2.50%
Since Inception	rr_AverageAnnualReturnSinceInception	3.76%
Inception Date	rr_AverageAnnualReturnInceptionDate	Feb. 14, 1994
Diversified Tax Exempt Series | Return After Taxes on Distributions | Diversified Tax Exempt Series
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	2.37%
5 Years	rr_AverageAnnualReturnYear05	0.56%
10 Years	rr_AverageAnnualReturnYear10	2.43%
Since Inception	rr_AverageAnnualReturnSinceInception	3.71%
Inception Date	rr_AverageAnnualReturnInceptionDate	Feb. 14, 1994
Diversified Tax Exempt Series | Return After Taxes on Distributions and Sale of Series Shares | Diversified Tax Exempt Series
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	1.89%
5 Years	rr_AverageAnnualReturnYear05	0.72%
10 Years	rr_AverageAnnualReturnYear10	2.42%
Since Inception	rr_AverageAnnualReturnSinceInception	3.66%
Inception Date	rr_AverageAnnualReturnInceptionDate	Feb. 14, 1994
Diversified Tax Exempt Series | ICE BofA Merrill Lynch 1-12 Year Municipal Bond Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	3.20%
5 Years	rr_AverageAnnualReturnYear05	1.93%
10 Years	rr_AverageAnnualReturnYear10	3.52%
Since Inception	rr_AverageAnnualReturnSinceInception	4.49%
Inception Date	rr_AverageAnnualReturnInceptionDate	Feb. 14, 1994

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratio in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

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Equity Income Series

Equity Income Series

Summary Section

Investment Goal

The Series’ primary investment objectives are to provide current income and income growth,

and it has a secondary goal of providing long-term capital appreciation.

Fees and Expenses

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

EQUITY INCOME SERIES

Shareholder Fees (paid
directly from your investment)

Shareholder Fees - Equity Income Series - USD ($)	CLASS I	CLASS S
Shareholder Fees (paid directly from your investment)	none	none

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

Annual Fund Operating Expenses - Equity Income Series		CLASS I	CLASS S
Management Fees		0.65%	0.65%
Distribution (12b-1) Fees		none	none
Other Expenses		0.19%	0.39%
Shareholder Services Fee		none	0.20%
Remainder of Other Expenses		0.19%	0.19%
Acquired Fund Fees and Expenses (AFFE)		0.14%	0.14%
Total Annual Fund Operating Expenses	[1]	0.98%	1.18%
Less Fee Waivers and Expense Reimbursements	[2]	(0.09%)	(0.09%)
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1]	0.89%	1.09%

Example

The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same (taking into account the Advisor's contractual expense limitation for the first year only). Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example - Equity Income Series - USD ($)	AFTER 1 YEAR	AFTER 3 YEARS	AFTER 5 YEARS	AFTER 10 YEARS
CLASS I	91	303	533	1,193
CLASS S	111	366	640	1,424

Portfolio Turnover

The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 52% of the average value of its portfolio.

Principal Investment Strategies

The Series seeks to provide current income and income growth, as well as long-term capital appreciation. The Series will invest, under normal circumstances, at least 80% of its net assets in equity securities. It invests primarily in income-producing equity securities. The Advisor uses a “bottom-up” strategy, focusing on individual security selection to identify companies that it believes will make attractive long-term investments and produce income. The Series may focus its investments in a small number of companies.

The Series may invest in common stocks and other equity securities, such as preferred stocks, convertible securities, interests in real estate investment trusts (REITs), interests in business development companies (BDCs), limited partner interests in master limited partnerships (MLPs), and ETFs (defined below), as well as derivative instruments, principally options (as described below). The Series may invest in U.S. and foreign stocks, including those in emerging markets, and American Depository Receipts (ADRs). The Series may invest in securities of small-, large-, or mid-size companies.

The Advisor uses a “bottom-up” strategy, focusing on individual security selection to identify companies that meet its investment criteria. In selecting securities for the Series, the Advisor seeks to identify stocks of companies that meet the following criteria:

• Companies that have the potential to provide a growing level of dividend income going forward.

• Companies trading at a meaningful discount from their intrinsic value, where that value is a reflection of their current cash-generating ability rather than relying meaningfully on growth.

• Companies that the Advisor expects to be beneficiaries of special situations, including those driven by cycles in the economy or in the capital markets.

When the Advisor wishes to sell a security at a specified price, it may seek to generate additional gains for the Series by writing (selling) options on the underlying security.

The Series may purchase shares of exchange-traded funds (ETFs), including to establish a diversified position in a particular market sector or to manage cash flows. The Advisor believes that purchasing ETFs may allow it to manage the Series’ portfolio more efficiently than would otherwise be possible.

The Advisor will consider selling a security if:

• it no longer fits the Series' investment strategies or valuation discipline;

• it has reached the Advisor's target sell price; or

• a more attractive investment opportunity is identified.

There are no prescribed limits on the sector allocation of the Series' investments and, from time to time, the Series may focus its investments in one or more sectors.

Principal Risks of Investing in the Series

As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series.

Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect.

Market risk — Because the Series invests in stocks, the value of your investment will fluctuate in response to stock market movements. This means that you could lose money on your investment in the Series or the Series could underperform if any of the following occurs:

• U.S. and/or foreign stock markets decline.

• An adverse event, such as an unfavorable earnings report, depresses the value of one or more of the Series’ portfolio holdings.

Large-cap risk — Large-cap stocks tend to go in and out of favor based on market and economic conditions. During a period when large-cap stocks fall behind other types of investments — small-cap stocks, for instance — the Series' performance could be reduced to the extent its portfolio is holding large-cap stocks.

Small- and mid-cap risk — The Series may also have special risks due to its investments in stocks of small- and mid-size companies. These risks include the following:

• The stocks of small- and mid-size companies may be subject to more abrupt or erratic market movements than the stocks of larger companies.

• The stocks of small- and mid-size companies may be subject to liquidity risk because such stocks may have lower trading volume and be less marketable than the stocks of larger companies. Liquidity risk is further described below.

• Small- and mid-size companies may have limited product lines, markets, or financial resources, and they may depend on a small management group. As a result, they fail more often than larger companies.

Risks of dividend-paying common stocks — Dividend-paying common stocks may be subject to additional risk that may cause them to underperform other types of stocks. In addition, if stocks held by the Series reduce or stop paying dividends, the Series’ ability to generate income may be affected.

Foreign securities risk — Because the Series may invest in securities of foreign issuers, the Series is subject to additional risks. These include risks of adverse changes in foreign economic, political, regulatory and other conditions. The prices of foreign common stocks may, at times, move in a different direction than the prices of U.S. stocks. The Series’ investments may be denominated in the currencies of the countries in which they are located; therefore, the value of the Series may be affected by changes in exchange rates between those foreign currencies and the U.S. dollar.

Emerging markets risk — The Series may also have special risks due to its investments in emerging market countries. In addition to the risks discussed above relating to investments in foreign companies located in developed countries, the Series’ investments in emerging market countries are subject to the following risks:

• Emerging markets may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries.

• Emerging market countries often have less uniformity in accounting and reporting requirements and unreliable securities valuation.

• It is sometimes difficult to obtain and enforce court judgments in emerging market countries and there is often a greater potential for nationalization and/or expropriation of assets by the government of an emerging market country.

• There will tend to be an increased risk of price volatility associated with the Series’ investments in emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

Options risk – Options, like all derivatives, can be extremely sensitive to changes in the market value of the underlying investment, and changes in the value of an option contract may not correlate perfectly with the underlying investment. Investments in options are also subject to liquidity risk, which is described below.

Risks related to ETFs — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio of securities. The Series will also bear its proportionate share of the expenses of the purchased ETF in addition to its own expenses.

Preferred stock risk — Preferred stocks are sensitive to interest rate changes, and are also subject to equity market risk, which is the risk that stock prices will fluctuate and can decline and reduce the value of a Series’ investment. The rights of preferred stocks on the distribution of a corporation’s assets in the event of a liquidation are generally subordinate to the rights associated with a corporation’s debt securities. Preferred stock may also be subject to prepayment risk similar to fixed income securities.

Convertible securities risk — The Series’ investments in convertible securities are subject to interest rate risk and credit risk, similar to fixed income securities. In addition, they are also subject to the risk that the price of the underlying common stock will go down, which may cause a proportionate (or disproportionate) decline in the price of the convertible security.

Risks of investing in BDCs — The Series' investments in BDCs are subject to additional risks. BDCs generally invest in less mature private companies or thinly traded U.S. public companies which involve greater risk than well-established publicly-traded companies. Generally, little public information exists for the companies in which a BDC may invest and there is a risk that investors in the BDC may not be able to make a fully informed evaluation of a BDC and its portfolio of investments. The Series will indirectly bear its proportionate share of any management and other operating expenses and of any performance based or incentive fees charged by the BDCs in which it invests, in addition to the expenses paid by the Series.

Risks of investing in REITs — The Series’ investments in REITs will be subject to the risks associated with the direct ownership of real estate. Risks commonly associated with the direct ownership of real estate include fluctuations in the value of underlying properties, defaults by borrowers or tenants, changes in interest rates and risks related to general or local economic conditions.

Risks of investing in MLPs — The Series' investments in MLPs are subject to additional risks. MLPs often own several properties or businesses (or other interests) that are related to oil and gas industries or other natural resources, but they also may finance other projects. To the extent that an MLP’s interests are all in a particular industry, the MLP will be negatively impacted by economic events adversely impacting that industry. There may be fewer protections afforded to investors in a MLP than investors in a corporation. For example, investors in MLPs may have limited voting rights or be liable under certain circumstances for amounts greater than the amount of their investment. Additional risks involved with investing in a MLP are risks associated with the specific industry or industries in which the partnership invests, such as the risks of investing in real estate, or oil and gas industries.

Risks of investing in a small number of companies — The Series may focus its investments in a small number of companies. If it does, changes in the market value of a single investment could cause greater fluctuations in the Series’ share price than would occur in a fund with a broader range of holdings.

Sector focus risk — Because the Series' investments may, from time to time, be more heavily invested in a particular sector or sectors, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those sectors. As a result, the Series' share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of sectors.

Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series' management or performance.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders.

The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.

Summary of Past Performance

The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the performance of the Class S shares of the Series for the full calendar year since its inception. The total return table shows how the average annual total returns for the Class S shares and Class I shares of the Series for different periods compare to those of a broad-based securities index. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.

Calendar Years Ended December 31

Quarterly Returns
Highest (quarter ended 06/30/14): 7.47%
Lowest (quarter ended 09/30/15): (7.34)%

AVERAGE ANNUAL TOTAL RETURNS
FOR PERIOD ENDED DECEMBER 31, 2017

Average Annual Total Returns - Equity Income Series	1 Year	Since Inception	Inception Date
Class S Shares	15.19%	9.34%	Dec. 31, 2013
Class S Shares | Return After Taxes on Distributions	14.05%	8.18%	Dec. 31, 2013
Class S Shares | Return After Taxes on Distributions and Sale of Series Shares	9.42%	7.09%	Dec. 31, 2013
Class I Shares	15.31%	9.53%	Dec. 31, 2013
Russell 1000® Value Index (reflects no deduction for fees, expenses, or taxes)	13.66%	9.83%	Dec. 31, 2013

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The after-tax figures are shown for one share class only, and would be different for the other share class. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

[2] Manning & Napier Advisors, LLC (the Advisor) has contractually agreed to limit its fees and reimburse expenses to the extent necessary so that the total direct annual fund operating expenses of each Class, exclusive of a Class’s Shareholder Services Fee, do not exceed 0.75% of each Class's average daily net assets. This contractual waiver will continue until at least April 30, 2019 and may not be amended or terminated by the Advisor prior to such date without the approval of the Series’ Board of Directors. The Advisor’s agreement to limit each Class's operating expenses is limited to direct operating expenses and, therefore, does not apply to AFFE, which are indirect expenses incurred by the Series through its investments in other investment companies.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	MANNING & NAPIER FUND, INC.
Prospectus Date	rr_ProspectusDate	May 01, 2018
Equity Income Series
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Equity Income Series Summary Section
Objective [Heading]	rr_ObjectiveHeading	Investment Goal
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Series’ primary investment objectives are to provide current income and income growth,
Objective, Secondary [Text Block]	rr_ObjectiveSecondaryTextBlock	and it has a secondary goal of providing long-term capital appreciation.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Series.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	EQUITY INCOME SERIES Shareholder Fees (paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund 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	April 30, 2019
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 52% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	52.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same (taking into account the Advisor's contractual expense limitation for the first year 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 Series seeks to provide current income and income growth, as well as long-term capital appreciation. The Series will invest, under normal circumstances, at least 80% of its net assets in equity securities. It invests primarily in income-producing equity securities. The Advisor uses a “bottom-up” strategy, focusing on individual security selection to identify companies that it believes will make attractive long-term investments and produce income. The Series may focus its investments in a small number of companies. The Series may invest in common stocks and other equity securities, such as preferred stocks, convertible securities, interests in real estate investment trusts (REITs), interests in business development companies (BDCs), limited partner interests in master limited partnerships (MLPs), and ETFs (defined below), as well as derivative instruments, principally options (as described below). The Series may invest in U.S. and foreign stocks, including those in emerging markets, and American Depository Receipts (ADRs). The Series may invest in securities of small-, large-, or mid-size companies. The Advisor uses a “bottom-up” strategy, focusing on individual security selection to identify companies that meet its investment criteria. In selecting securities for the Series, the Advisor seeks to identify stocks of companies that meet the following criteria: Companies that have the potential to provide a growing level of dividend income going forward. Companies trading at a meaningful discount from their intrinsic value, where that value is a reflection of their current cash-generating ability rather than relying meaningfully on growth. Companies that the Advisor expects to be beneficiaries of special situations, including those driven by cycles in the economy or in the capital markets. When the Advisor wishes to sell a security at a specified price, it may seek to generate additional gains for the Series by writing (selling) options on the underlying security. The Series may purchase shares of exchange-traded funds (ETFs), including to establish a diversified position in a particular market sector or to manage cash flows. The Advisor believes that purchasing ETFs may allow it to manage the Series’ portfolio more efficiently than would otherwise be possible. The Advisor will consider selling a security if: it no longer fits the Series' investment strategies or valuation discipline; it has reached the Advisor's target sell price; or a more attractive investment opportunity is identified. There are no prescribed limits on the sector allocation of the Series' investments and, from time to time, the Series may focus its investments in one or more sectors.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Series
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series. Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect. Market risk — Because the Series invests in stocks, the value of your investment will fluctuate in response to stock market movements. This means that you could lose money on your investment in the Series or the Series could underperform if any of the following occurs: U.S. and/or foreign stock markets decline. An adverse event, such as an unfavorable earnings report, depresses the value of one or more of the Series’ portfolio holdings. Large-cap risk — Large-cap stocks tend to go in and out of favor based on market and economic conditions. During a period when large-cap stocks fall behind other types of investments — small-cap stocks, for instance — the Series' performance could be reduced to the extent its portfolio is holding large-cap stocks. Small- and mid-cap risk — The Series may also have special risks due to its investments in stocks of small- and mid-size companies. These risks include the following: The stocks of small- and mid-size companies may be subject to more abrupt or erratic market movements than the stocks of larger companies. The stocks of small- and mid-size companies may be subject to liquidity risk because such stocks may have lower trading volume and be less marketable than the stocks of larger companies. Liquidity risk is further described below. Small- and mid-size companies may have limited product lines, markets, or financial resources, and they may depend on a small management group. As a result, they fail more often than larger companies. Risks of dividend-paying common stocks — Dividend-paying common stocks may be subject to additional risk that may cause them to underperform other types of stocks. In addition, if stocks held by the Series reduce or stop paying dividends, the Series’ ability to generate income may be affected. Foreign securities risk — Because the Series may invest in securities of foreign issuers, the Series is subject to additional risks. These include risks of adverse changes in foreign economic, political, regulatory and other conditions. The prices of foreign common stocks may, at times, move in a different direction than the prices of U.S. stocks. The Series’ investments may be denominated in the currencies of the countries in which they are located; therefore, the value of the Series may be affected by changes in exchange rates between those foreign currencies and the U.S. dollar. Emerging markets risk — The Series may also have special risks due to its investments in emerging market countries. In addition to the risks discussed above relating to investments in foreign companies located in developed countries, the Series’ investments in emerging market countries are subject to the following risks: Emerging markets may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries. Emerging market countries often have less uniformity in accounting and reporting requirements and unreliable securities valuation. It is sometimes difficult to obtain and enforce court judgments in emerging market countries and there is often a greater potential for nationalization and/or expropriation of assets by the government of an emerging market country. There will tend to be an increased risk of price volatility associated with the Series’ investments in emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar. Options risk – Options, like all derivatives, can be extremely sensitive to changes in the market value of the underlying investment, and changes in the value of an option contract may not correlate perfectly with the underlying investment. Investments in options are also subject to liquidity risk, which is described below. Risks related to ETFs — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio of securities. The Series will also bear its proportionate share of the expenses of the purchased ETF in addition to its own expenses. Preferred stock risk — Preferred stocks are sensitive to interest rate changes, and are also subject to equity market risk, which is the risk that stock prices will fluctuate and can decline and reduce the value of a Series’ investment. The rights of preferred stocks on the distribution of a corporation’s assets in the event of a liquidation are generally subordinate to the rights associated with a corporation’s debt securities. Preferred stock may also be subject to prepayment risk similar to fixed income securities. Convertible securities risk — The Series’ investments in convertible securities are subject to interest rate risk and credit risk, similar to fixed income securities. In addition, they are also subject to the risk that the price of the underlying common stock will go down, which may cause a proportionate (or disproportionate) decline in the price of the convertible security. Risks of investing in BDCs — The Series' investments in BDCs are subject to additional risks. BDCs generally invest in less mature private companies or thinly traded U.S. public companies which involve greater risk than well-established publicly-traded companies. Generally, little public information exists for the companies in which a BDC may invest and there is a risk that investors in the BDC may not be able to make a fully informed evaluation of a BDC and its portfolio of investments. The Series will indirectly bear its proportionate share of any management and other operating expenses and of any performance based or incentive fees charged by the BDCs in which it invests, in addition to the expenses paid by the Series. Risks of investing in REITs — The Series’ investments in REITs will be subject to the risks associated with the direct ownership of real estate. Risks commonly associated with the direct ownership of real estate include fluctuations in the value of underlying properties, defaults by borrowers or tenants, changes in interest rates and risks related to general or local economic conditions. Risks of investing in MLPs — The Series' investments in MLPs are subject to additional risks. MLPs often own several properties or businesses (or other interests) that are related to oil and gas industries or other natural resources, but they also may finance other projects. To the extent that an MLP’s interests are all in a particular industry, the MLP will be negatively impacted by economic events adversely impacting that industry. There may be fewer protections afforded to investors in a MLP than investors in a corporation. For example, investors in MLPs may have limited voting rights or be liable under certain circumstances for amounts greater than the amount of their investment. Additional risks involved with investing in a MLP are risks associated with the specific industry or industries in which the partnership invests, such as the risks of investing in real estate, or oil and gas industries. Risks of investing in a small number of companies — The Series may focus its investments in a small number of companies. If it does, changes in the market value of a single investment could cause greater fluctuations in the Series’ share price than would occur in a fund with a broader range of holdings. Sector focus risk — Because the Series' investments may, from time to time, be more heavily invested in a particular sector or sectors, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those sectors. As a result, the Series' share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of sectors. Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series' management or performance. Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders. The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the Series.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Summary of Past Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the performance of the Class S shares of the Series for the full calendar year since its inception. The total return table shows how the average annual total returns for the Class S shares and Class I shares of the Series for different periods compare to those of a broad-based securities index. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart shows the performance of the Class S shares of the Series for the full calendar year since its inception. The total return table shows how the average annual total returns for the Class S shares and Class I shares of the Series for different periods compare to those of a broad-based securities index.
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.manning-napier.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Calendar Years Ended December 31
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Quarterly Returns Highest (quarter ended 06/30/14): 7.47% Lowest (quarter ended 09/30/15): (7.34)%
Performance Table Heading	rr_PerformanceTableHeading	AVERAGE ANNUAL TOTAL RETURNS FOR PERIOD ENDED DECEMBER 31, 2017
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	After-tax returns are not relevant to investors who hold their Series 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	The after-tax figures are shown for one share class only, and would be different for the other share class.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The after-tax figures are shown for one share class only, and would be different for the other share class. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Equity Income Series | CLASS I
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees (paid directly from your investment)	rr_ShareholderFeeOther	none
Management Fees	rr_ManagementFeesOverAssets	0.65%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Shareholder Services Fee	rr_Component1OtherExpensesOverAssets	none
Remainder of Other Expenses	rr_Component2OtherExpensesOverAssets	0.19%
Other Expenses	rr_OtherExpensesOverAssets	0.19%
Acquired Fund Fees and Expenses (AFFE)	rr_AcquiredFundFeesAndExpensesOverAssets	0.14%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.98%	[1]
Less Fee Waivers and Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.09%)	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.89%	[1]
AFTER 1 YEAR	rr_ExpenseExampleYear01	$ 91
AFTER 3 YEARS	rr_ExpenseExampleYear03	303
AFTER 5 YEARS	rr_ExpenseExampleYear05	533
AFTER 10 YEARS	rr_ExpenseExampleYear10	$ 1,193
1 Year	rr_AverageAnnualReturnYear01	15.31%
Since Inception	rr_AverageAnnualReturnSinceInception	9.53%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 2013
Equity Income Series | CLASS S
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees (paid directly from your investment)	rr_ShareholderFeeOther	none
Management Fees	rr_ManagementFeesOverAssets	0.65%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Shareholder Services Fee	rr_Component1OtherExpensesOverAssets	0.20%
Remainder of Other Expenses	rr_Component2OtherExpensesOverAssets	0.19%
Other Expenses	rr_OtherExpensesOverAssets	0.39%
Acquired Fund Fees and Expenses (AFFE)	rr_AcquiredFundFeesAndExpensesOverAssets	0.14%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.18%	[1]
Less Fee Waivers and Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.09%)	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	1.09%	[1]
AFTER 1 YEAR	rr_ExpenseExampleYear01	$ 111
AFTER 3 YEARS	rr_ExpenseExampleYear03	366
AFTER 5 YEARS	rr_ExpenseExampleYear05	640
AFTER 10 YEARS	rr_ExpenseExampleYear10	$ 1,424
2014	rr_AnnualReturn2014	11.63%
2015	rr_AnnualReturn2015	(3.20%)
2016	rr_AnnualReturn2016	14.82%
2017	rr_AnnualReturn2017	15.19%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Highest
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2014
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	7.47%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Lowest
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2015
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(7.34%)
1 Year	rr_AverageAnnualReturnYear01	15.19%
Since Inception	rr_AverageAnnualReturnSinceInception	9.34%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 2013
Equity Income Series | Return After Taxes on Distributions | CLASS S
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	14.05%
Since Inception	rr_AverageAnnualReturnSinceInception	8.18%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 2013
Equity Income Series | Return After Taxes on Distributions and Sale of Series Shares | CLASS S
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	9.42%
Since Inception	rr_AverageAnnualReturnSinceInception	7.09%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 2013
Equity Income Series | Russell 1000® Value Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	13.66%
Since Inception	rr_AverageAnnualReturnSinceInception	9.83%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 2013

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

[2] Manning & Napier Advisors, LLC (the Advisor) has contractually agreed to limit its fees and reimburse expenses to the extent necessary so that the total direct annual fund operating expenses of each Class, exclusive of a Class’s Shareholder Services Fee, do not exceed 0.75% of each Class's average daily net assets. This contractual waiver will continue until at least April 30, 2019 and may not be amended or terminated by the Advisor prior to such date without the approval of the Series’ Board of Directors. The Advisor’s agreement to limit each Class's operating expenses is limited to direct operating expenses and, therefore, does not apply to AFFE, which are indirect expenses incurred by the Series through its investments in other investment companies.

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Global Fixed Income Series

Global Fixed Income Series

Summary Section

Investment Goal

The Series’ investment objective is to provide long-term total return by investing principally in fixed income securities of issuers located anywhere in the world.

Fees and Expenses

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

GLOBAL FIXED INCOME SERIES

Shareholder Fees (paid
directly from your investment)

Shareholder Fees - Global Fixed Income Series - USD ($)	CLASS I	CLASS S
Shareholder Fees (paid directly from your investment)	none	none

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

Annual Fund Operating Expenses - Global Fixed Income Series		CLASS I	CLASS S
Management Fees		0.60%	0.60%
Distribution (12b-1) Fees		none	none
Other Expenses		0.14%	0.29%
Shareholder Services Fee		none	0.15%
Remainder of Other Expenses		0.14%	0.14%
Total Annual Fund Operating Expenses	[1]	0.74%	0.89%
Less Fee Waiver and/or Expense Reimbursement	[2]	(0.04%)	(0.04%)
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1]	0.70%	0.85%

Example

The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same (taking into account the Advisor's contractual expense limitation for the first year only). Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example - Global Fixed Income Series - USD ($)	AFTER 1 YEAR	AFTER 3 YEARS	AFTER 5 YEARS	AFTER 10 YEARS
CLASS I	72	233	408	915
CLASS S	87	280	489	1,092

Portfolio Turnover

The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, will affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 34% of the average value of its portfolio.

Principal Investment Strategies

The Series seeks to provide a high level of long-term total return, which is a combination of income and capital appreciation. The Series will invest, under normal circumstances, at least 80% of its assets in fixed income securities. These securities may be issued by issuers located anywhere in the world, including emerging markets. Under normal circumstances, the Series will invest at least 40% of its net assets in securities issued by non-U.S. companies or non-U.S. governments, their agencies, or instrumentalities. The Series’ portfolio will consist primarily of government debt securities and of investment grade corporate debt securities, bank debt, securitized/collateralized instruments, and money market securities. The Series may also invest a substantial portion of its assets in high-yield, high-risk bonds, commonly called junk bonds.

The Series may purchase shares of exchange-traded funds (ETFs), including to establish a diversified position in a particular market sector or to manage cash flows. The Advisor believes that purchasing ETFs may allow it to manage the Series’ portfolio more efficiently than would otherwise be possible.

The Series may, but is not required to, undertake hedging activities and may invest in forward foreign currency contracts to hedge currency risks associated with the purchase of individual securities denominated in a foreign currency.

Bond Selection Process — The Advisor attempts to identify bond market sectors and individual securities that offer yields sufficient for the risks specific to the sector or security. In analyzing the relative attractiveness of countries, sectors, and individual securities, the Advisor considers:

• Relative economic conditions of each country.

• Interest rate sensitivity of particular countries, sectors, and securities.

• Differences in yields offered by bonds of different sectors, credit quality, or maturities.

• The impact of currency changes on the sectors.

Maturity and Portfolio Duration — The Series is not subject to any maturity or duration restrictions but will vary its average dollar-weighted portfolio maturity and duration depending on the Advisor’s outlook for yields and currency fluctuations. For example, the Advisor may invest in longer-term fixed income securities when it expects yields to fall in a given country in an attempt to realize gains for the Series. Likewise, the Advisor may invest in shorter-term fixed income securities when it expects yields to rise or the currency to appreciate in a given country. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security’s price to changes in yields. The prices of fixed income securities with shorter durations generally will be less affected by changes in yields than the prices of fixed income securities with longer durations. For example, a 10 year duration means the fixed income security will decrease in value by 10% if yields rise 1% and increase in value by 10% if yields fall 1%.

Credit Quality — The Series invests primarily in investment grade securities but may invest up to 20% of its assets in lower quality bonds, commonly known as “junk bonds,” those rated below BBB- by S&P or Baa3 by Moody’s, or determined to be of equivalent quality by the Advisor.

Securities issued by governments and supranational entities may be sold to adjust the Series' duration and/or yield curve positioning.

Other securities may be sold for one or more of the following reasons:

• they no longer meet the selection criteria under which they were purchased;

• their relative value has declined (the spread has tightened such that they are no longer considered attractively priced);

• a more attractive investment opportunity is identified.

Securities may also be sold based on the Advisor's macroeconomic assessment of countries and currencies.

There are no prescribed limits on the sector allocation of the Series' investments and, from time to time, the Series may focus its investments in one or more sectors.

Principal Risks of Investing in the Series

As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series.

Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect.

Market risk — Because the Series invests in bonds, the value of your investment will fluctuate in response to changes in interest rates, credit spreads, and prepayment spreads, even though such changes will not affect the interest income derived from portfolio securities. You could lose money on your investment in the Series or the Series could underperform if any of the following occurs:

• U.S. and/or foreign bond markets decline.

• The issuer of a fixed income security owned by the Series defaults on its obligation to pay principal and/or interest or has its credit rating downgraded; this risk is greater for junk bonds and other lower quality bonds.

• Interest rates rise, credit spreads widen, and/or prepayment spreads widen. These events alone or in combination can cause bond prices to fall and reduce the value of the Series’ portfolio. Longer-term bonds have greater sensitivity to, and will therefore experience greater fluctuations in response to, interest rate changes than shorter-term bonds.

• Market volatility and/or prepayment spreads change to such a degree that prepayment uncertainty/risks are reassessed; the greater the uncertainty/risk, the wider the requisite prepayment spread.

Current market conditions may pose heightened risks for the Series. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the Series. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, the Series' value may fluctuate and/or the Series may experience increased redemptions from shareholders, which may impact the Series' liquidity or force the Series to sell securities into a declining or illiquid market.

Foreign securities risk — Because the Series may invest in securities of foreign issuers, the Series is subject to additional risks. These include risks of adverse changes in foreign economic, political, regulatory and other conditions. The prices of foreign fixed income securities may, at times, move in a different direction than the prices of fixed income securities issued in the United States. The Series’ investments may be denominated in the currencies of the countries in which they are located; therefore, the value of the Series may be affected by changes in exchange rates between those foreign currencies and the U.S. dollar. The Advisor’s attempt to manage the currency risk described above may not accurately predict movements in currency exchange rates, which could cause the Series to sustain losses.

Emerging markets risk — The Series may also have special risks due to its investments in emerging market countries. In addition to the risks discussed above relating to investments in foreign companies located in developed countries, the Series’ investments in emerging market countries are subject to the following risks:

• Emerging markets may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries.

• Emerging market countries often have less uniformity in accounting and reporting requirements and unreliable securities valuation.

• It is sometimes difficult to obtain and enforce court judgments in emerging market countries and there is often a greater potential for nationalization and/or expropriation of assets by the government of an emerging market country.

• There will tend to be an increased risk of price volatility associated with the Series’ investments in emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

High-yield securities risk — The Series is subject to additional risk due to its ability to invest in high-yield securities (junk bonds):

• High-yield securities may underperform other sectors of the bond market, or the market as a whole.

• The performance of high-yield securities tends to be more volatile than that of other sectors of the bond market.

• Given the total size of the high-yield securities market, high-yield securities can be less liquid than investment grade securities.

• The Series’ investments in high-yield securities will subject it to a substantial degree of credit risk because the prospect for repayment of principal and interest of many of these bonds is speculative.

Forward contracts risk — The Series is subject to the following risks due to its ability to invest in forward contracts:

• Forwards, like all derivatives, can be extremely sensitive to changes in the market value of the underlying investment, and changes in the value of a forward contract may not correlate perfectly with the underlying investment.

• The Series may not be able to receive amounts payable to it under its forward contracts as quickly as it may be able to sell or otherwise obtain payments from other investments, so the Series’ investments in such contracts may not be as liquid as the Series’ other investments.

• The Series’ use of forwards is also subject to the risk that the counterparty to the forward contract will default or otherwise become unable to honor its obligation to the Series.

Mortgage- and asset-backed securities risks — The Series' investments in mortgage-backed and asset-backed securities may subject it to the following additional risks:

• Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations.

• Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities, and asset-backed securities may not have the benefit of any security interest in the related assets.

Risks related to ETFs — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio of securities. The Series will also bear its proportionate share of the expenses of the purchased ETF in addition to its own expenses.

Sector focus risk — Because the Series' investments may, from time to time, be more heavily invested in a particular sector or sectors, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those sectors. As a result, the Series' share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of sectors.

Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series' management or performance.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders.

Non-diversification risk — The Series is non-diversified, which means that it may invest in the securities of relatively few issuers. As a result, the Series may be susceptible to a single adverse economic or regulatory occurrence affecting one or more of these issuers, and may experience increased volatility due to its investments in those securities.

The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.

Summary of Past Performance

The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Class I shares of the Series for each calendar year since its reactivation. The Series was previously active from October 31, 1997 to February 28, 2003. The Series was redeemed in full on February 28, 2003, and was not active between that date and its reactivation on October 1, 2012. During its previous activation, the Series offered only one class. Effective October 1, 2012, the Series was reactivated and the Series’ shares were redesignated as Class I shares. For years in which the Series was inactive or was not active for a full calendar year, no performance information is shown in the bar chart. Because the Global Fixed Income Series has had several periods of activation and deactivation, its performance is not comparable to the performance of other mutual funds. The total return table shows how the average annual total returns for the Class I shares and the Class S shares for different periods compare to those of a broad-based securities index. The Series’ Class S shares commenced operations on April 1, 2013, and all performance below for the periods prior to that date reflect the performance and average annual total returns of the Series’ Class I shares, adjusted to reflect the higher expenses of the Class S shares. Because the Class S shares of the Series invest in the same portfolio of securities, returns for the Class S shares will be substantially similar to those of the Class I shares. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.

Calendar Year Ended December 31

Quarterly Returns
Highest (quarter ended 3/31/16): 3.83%
Lowest (quarter ended 12/31/16): (4.49)%

AVERAGE ANNUAL TOTAL RETURNS
FOR PERIOD ENDED DECEMBER 31, 2017

Average Annual Total Returns - Global Fixed Income Series	1 Year	5 Years	Since Current Activation	Inception Date
Class I Shares	6.34%	0.20%	0.37%	Oct. 01, 2012
Class I Shares | Return After Taxes on Distributions	6.34%	(0.14%)	0.04%	Oct. 01, 2012
Class I Shares | Return After Taxes on Distributions and Sale of Series Shares	3.59%	0.02%	0.15%	Oct. 01, 2012
Class S Shares	6.26%	0.06%	0.23%	Oct. 01, 2012
ICE BofA Merrill Lynch Global Broad Market Index (reflects no deduction for fees, expenses, or taxes)	6.95%	0.94%	0.83%	Oct. 01, 2012

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The after-tax figures are shown for one share class only, and would be different for the other share class. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

[2] Manning & Napier Advisors, LLC (the Advisor) has contractually agreed to limit its fees and reimburse expenses to the extent necessary so that the total direct annual fund operating expenses of each Class, exclusive of a Class’s Shareholder Services Fee, do not exceed 0.70% of each Class’s average daily net assets. This contractual waiver will continue until at least April 30, 2019 and may not be amended or terminated by the Advisor prior to such date without the approval of the Series’ Board of Directors. The Advisor’s agreement to limit each Class’s operating expenses is limited to direct operating expenses and, therefore, does not apply to acquired funds fees and expenses, which are indirect expenses incurred by the Series through its investments in other investment companies.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	MANNING & NAPIER FUND, INC.
Prospectus Date	rr_ProspectusDate	May 01, 2018
Global Fixed Income Series
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Global Fixed Income Series Summary Section
Objective [Heading]	rr_ObjectiveHeading	Investment Goal
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Series’ investment objective is to provide long-term total return by investing principally in fixed income securities of issuers located anywhere in the world.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Series.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	GLOBAL FIXED INCOME SERIES Shareholder Fees (paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund 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	April 30, 2019
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, will affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 34% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	34.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same (taking into account the Advisor's contractual expense limitation for the first year 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 Series seeks to provide a high level of long-term total return, which is a combination of income and capital appreciation. The Series will invest, under normal circumstances, at least 80% of its assets in fixed income securities. These securities may be issued by issuers located anywhere in the world, including emerging markets. Under normal circumstances, the Series will invest at least 40% of its net assets in securities issued by non-U.S. companies or non-U.S. governments, their agencies, or instrumentalities. The Series’ portfolio will consist primarily of government debt securities and of investment grade corporate debt securities, bank debt, securitized/collateralized instruments, and money market securities. The Series may also invest a substantial portion of its assets in high-yield, high-risk bonds, commonly called junk bonds. The Series may purchase shares of exchange-traded funds (ETFs), including to establish a diversified position in a particular market sector or to manage cash flows. The Advisor believes that purchasing ETFs may allow it to manage the Series’ portfolio more efficiently than would otherwise be possible. The Series may, but is not required to, undertake hedging activities and may invest in forward foreign currency contracts to hedge currency risks associated with the purchase of individual securities denominated in a foreign currency. Bond Selection Process — The Advisor attempts to identify bond market sectors and individual securities that offer yields sufficient for the risks specific to the sector or security. In analyzing the relative attractiveness of countries, sectors, and individual securities, the Advisor considers: Relative economic conditions of each country. Interest rate sensitivity of particular countries, sectors, and securities. Differences in yields offered by bonds of different sectors, credit quality, or maturities. The impact of currency changes on the sectors. Maturity and Portfolio Duration — The Series is not subject to any maturity or duration restrictions but will vary its average dollar-weighted portfolio maturity and duration depending on the Advisor’s outlook for yields and currency fluctuations. For example, the Advisor may invest in longer-term fixed income securities when it expects yields to fall in a given country in an attempt to realize gains for the Series. Likewise, the Advisor may invest in shorter-term fixed income securities when it expects yields to rise or the currency to appreciate in a given country. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security’s price to changes in yields. The prices of fixed income securities with shorter durations generally will be less affected by changes in yields than the prices of fixed income securities with longer durations. For example, a 10 year duration means the fixed income security will decrease in value by 10% if yields rise 1% and increase in value by 10% if yields fall 1%. Credit Quality — The Series invests primarily in investment grade securities but may invest up to 20% of its assets in lower quality bonds, commonly known as “junk bonds,” those rated below BBB- by S&P or Baa3 by Moody’s, or determined to be of equivalent quality by the Advisor. Securities issued by governments and supranational entities may be sold to adjust the Series' duration and/or yield curve positioning. Other securities may be sold for one or more of the following reasons: they no longer meet the selection criteria under which they were purchased; their relative value has declined (the spread has tightened such that they are no longer considered attractively priced); a more attractive investment opportunity is identified. Securities may also be sold based on the Advisor's macroeconomic assessment of countries and currencies. There are no prescribed limits on the sector allocation of the Series' investments and, from time to time, the Series may focus its investments in one or more sectors.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Series
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series. Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect. Market risk — Because the Series invests in bonds, the value of your investment will fluctuate in response to changes in interest rates, credit spreads, and prepayment spreads, even though such changes will not affect the interest income derived from portfolio securities. You could lose money on your investment in the Series or the Series could underperform if any of the following occurs: U.S. and/or foreign bond markets decline. The issuer of a fixed income security owned by the Series defaults on its obligation to pay principal and/or interest or has its credit rating downgraded; this risk is greater for junk bonds and other lower quality bonds. Interest rates rise, credit spreads widen, and/or prepayment spreads widen. These events alone or in combination can cause bond prices to fall and reduce the value of the Series’ portfolio. Longer-term bonds have greater sensitivity to, and will therefore experience greater fluctuations in response to, interest rate changes than shorter-term bonds. Market volatility and/or prepayment spreads change to such a degree that prepayment uncertainty/risks are reassessed; the greater the uncertainty/risk, the wider the requisite prepayment spread. Current market conditions may pose heightened risks for the Series. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the Series. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, the Series' value may fluctuate and/or the Series may experience increased redemptions from shareholders, which may impact the Series' liquidity or force the Series to sell securities into a declining or illiquid market. Foreign securities risk — Because the Series may invest in securities of foreign issuers, the Series is subject to additional risks. These include risks of adverse changes in foreign economic, political, regulatory and other conditions. The prices of foreign fixed income securities may, at times, move in a different direction than the prices of fixed income securities issued in the United States. The Series’ investments may be denominated in the currencies of the countries in which they are located; therefore, the value of the Series may be affected by changes in exchange rates between those foreign currencies and the U.S. dollar. The Advisor’s attempt to manage the currency risk described above may not accurately predict movements in currency exchange rates, which could cause the Series to sustain losses. Emerging markets risk — The Series may also have special risks due to its investments in emerging market countries. In addition to the risks discussed above relating to investments in foreign companies located in developed countries, the Series’ investments in emerging market countries are subject to the following risks: Emerging markets may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries. Emerging market countries often have less uniformity in accounting and reporting requirements and unreliable securities valuation. It is sometimes difficult to obtain and enforce court judgments in emerging market countries and there is often a greater potential for nationalization and/or expropriation of assets by the government of an emerging market country. There will tend to be an increased risk of price volatility associated with the Series’ investments in emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar. High-yield securities risk — The Series is subject to additional risk due to its ability to invest in high-yield securities (junk bonds): High-yield securities may underperform other sectors of the bond market, or the market as a whole. The performance of high-yield securities tends to be more volatile than that of other sectors of the bond market. Given the total size of the high-yield securities market, high-yield securities can be less liquid than investment grade securities. The Series’ investments in high-yield securities will subject it to a substantial degree of credit risk because the prospect for repayment of principal and interest of many of these bonds is speculative. Forward contracts risk — The Series is subject to the following risks due to its ability to invest in forward contracts: Forwards, like all derivatives, can be extremely sensitive to changes in the market value of the underlying investment, and changes in the value of a forward contract may not correlate perfectly with the underlying investment. The Series may not be able to receive amounts payable to it under its forward contracts as quickly as it may be able to sell or otherwise obtain payments from other investments, so the Series’ investments in such contracts may not be as liquid as the Series’ other investments. The Series’ use of forwards is also subject to the risk that the counterparty to the forward contract will default or otherwise become unable to honor its obligation to the Series. Mortgage- and asset-backed securities risks — The Series' investments in mortgage-backed and asset-backed securities may subject it to the following additional risks: Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations. Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities, and asset-backed securities may not have the benefit of any security interest in the related assets. Risks related to ETFs — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio of securities. The Series will also bear its proportionate share of the expenses of the purchased ETF in addition to its own expenses. Sector focus risk — Because the Series' investments may, from time to time, be more heavily invested in a particular sector or sectors, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those sectors. As a result, the Series' share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of sectors. Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series' management or performance. Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders. Non-diversification risk — The Series is non-diversified, which means that it may invest in the securities of relatively few issuers. As a result, the Series may be susceptible to a single adverse economic or regulatory occurrence affecting one or more of these issuers, and may experience increased volatility due to its investments in those securities. The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the Series.
Risk Nondiversified Status [Text]	rr_RiskNondiversifiedStatus	Non-diversification risk — The Series is non-diversified, which means that it may invest in the securities of relatively few issuers. As a result, the Series may be susceptible to a single adverse economic or regulatory occurrence affecting one or more of these issuers, and may experience increased volatility due to its investments in those securities.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Summary of Past Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Class I shares of the Series for each calendar year since its reactivation. The Series was previously active from October 31, 1997 to February 28, 2003. The Series was redeemed in full on February 28, 2003, and was not active between that date and its reactivation on October 1, 2012. During its previous activation, the Series offered only one class. Effective October 1, 2012, the Series was reactivated and the Series’ shares were redesignated as Class I shares. For years in which the Series was inactive or was not active for a full calendar year, no performance information is shown in the bar chart. Because the Global Fixed Income Series has had several periods of activation and deactivation, its performance is not comparable to the performance of other mutual funds. The total return table shows how the average annual total returns for the Class I shares and the Class S shares for different periods compare to those of a broad-based securities index. The Series’ Class S shares commenced operations on April 1, 2013, and all performance below for the periods prior to that date reflect the performance and average annual total returns of the Series’ Class I shares, adjusted to reflect the higher expenses of the Class S shares. Because the Class S shares of the Series invest in the same portfolio of securities, returns for the Class S shares will be substantially similar to those of the Class I shares. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Class I shares of the Series for each calendar year since its reactivation. The Series was previously active from October 31, 1997 to February 28, 2003. The Series was redeemed in full on February 28, 2003, and was not active between that date and its reactivation on October 1, 2012. During its previous activation, the Series offered only one class. Effective October 1, 2012, the Series was reactivated and the Series’ shares were redesignated as Class I shares. For years in which the Series was inactive or was not active for a full calendar year, no performance information is shown in the bar chart. Because the Global Fixed Income Series has had several periods of activation and deactivation, its performance is not comparable to the performance of other mutual funds. The total return table shows how the average annual total returns for the Class I shares and the Class S shares for different periods compare to those of a broad-based securities index.
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.manning-napier.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Calendar Year Ended December 31
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Quarterly Returns Highest (quarter ended 3/31/16): 3.83% Lowest (quarter ended 12/31/16): (4.49)%
Performance Table Heading	rr_PerformanceTableHeading	AVERAGE ANNUAL TOTAL RETURNS FOR PERIOD ENDED DECEMBER 31, 2017
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	After-tax returns are not relevant to investors who hold their Series 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	The after-tax figures are shown for one share class only, and would be different for the other share class.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The after-tax figures are shown for one share class only, and would be different for the other share class. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Global Fixed Income Series | CLASS I
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees (paid directly from your investment)	rr_ShareholderFeeOther	none
Management Fees	rr_ManagementFeesOverAssets	0.60%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Shareholder Services Fee	rr_Component1OtherExpensesOverAssets	none
Remainder of Other Expenses	rr_Component2OtherExpensesOverAssets	0.14%
Other Expenses	rr_OtherExpensesOverAssets	0.14%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.74%	[1]
Less Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.04%)	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.70%	[1]
AFTER 1 YEAR	rr_ExpenseExampleYear01	$ 72
AFTER 3 YEARS	rr_ExpenseExampleYear03	233
AFTER 5 YEARS	rr_ExpenseExampleYear05	408
AFTER 10 YEARS	rr_ExpenseExampleYear10	$ 915
2013	rr_AnnualReturn2013	(0.32%)
2014	rr_AnnualReturn2014	0.57%
2015	rr_AnnualReturn2015	(5.45%)
2016	rr_AnnualReturn2016	0.22%
2017	rr_AnnualReturn2017	6.34%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Highest
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Mar. 31, 2016
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	3.83%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Lowest
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2016
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(4.49%)
1 Year	rr_AverageAnnualReturnYear01	6.34%
5 Years	rr_AverageAnnualReturnYear05	0.20%
Since Current Activation	rr_AverageAnnualReturnSinceInception	0.37%
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 01, 2012
Global Fixed Income Series | CLASS S
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees (paid directly from your investment)	rr_ShareholderFeeOther	none
Management Fees	rr_ManagementFeesOverAssets	0.60%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Shareholder Services Fee	rr_Component1OtherExpensesOverAssets	0.15%
Remainder of Other Expenses	rr_Component2OtherExpensesOverAssets	0.14%
Other Expenses	rr_OtherExpensesOverAssets	0.29%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.89%	[1]
Less Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.04%)	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.85%	[1]
AFTER 1 YEAR	rr_ExpenseExampleYear01	$ 87
AFTER 3 YEARS	rr_ExpenseExampleYear03	280
AFTER 5 YEARS	rr_ExpenseExampleYear05	489
AFTER 10 YEARS	rr_ExpenseExampleYear10	$ 1,092
1 Year	rr_AverageAnnualReturnYear01	6.26%
5 Years	rr_AverageAnnualReturnYear05	0.06%
Since Current Activation	rr_AverageAnnualReturnSinceInception	0.23%
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 01, 2012
Global Fixed Income Series | Return After Taxes on Distributions | CLASS I
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	6.34%
5 Years	rr_AverageAnnualReturnYear05	(0.14%)
Since Current Activation	rr_AverageAnnualReturnSinceInception	0.04%
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 01, 2012
Global Fixed Income Series | Return After Taxes on Distributions and Sale of Series Shares | CLASS I
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	3.59%
5 Years	rr_AverageAnnualReturnYear05	0.02%
Since Current Activation	rr_AverageAnnualReturnSinceInception	0.15%
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 01, 2012
Global Fixed Income Series | ICE BofA Merrill Lynch Global Broad Market Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	6.95%
5 Years	rr_AverageAnnualReturnYear05	0.94%
Since Current Activation	rr_AverageAnnualReturnSinceInception	0.83%
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 01, 2012

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

[2] Manning & Napier Advisors, LLC (the Advisor) has contractually agreed to limit its fees and reimburse expenses to the extent necessary so that the total direct annual fund operating expenses of each Class, exclusive of a Class’s Shareholder Services Fee, do not exceed 0.70% of each Class’s average daily net assets. This contractual waiver will continue until at least April 30, 2019 and may not be amended or terminated by the Advisor prior to such date without the approval of the Series’ Board of Directors. The Advisor’s agreement to limit each Class’s operating expenses is limited to direct operating expenses and, therefore, does not apply to acquired funds fees and expenses, which are indirect expenses incurred by the Series through its investments in other investment companies.

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High Yield Bond Series

High Yield Bond Series

Summary Section

Investment Goal

The Series’ investment objective is to provide a high level of long-term total return by investing principally in non-investment grade fixed income securities that are issued by government and corporate entities.

Fees and Expenses

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

HIGH YIELD BOND SERIES

Shareholder Fees (fees paid directly from your
investment)

Shareholder Fees - High Yield Bond Series - USD ($)	CLASS I	CLASS S
Shareholder Fees (fees paid directly from your investment)	none	none

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

Annual Fund Operating Expenses - High Yield Bond Series		CLASS I	CLASS S
Management Fees		0.55%	0.55%
Distribution (12b-1) Fees		none	none
Other Expenses		0.17%	0.42%
Shareholder Services Fee		none	0.25%
Remainder of Other Expenses		0.17%	0.17%
Acquired Fund Fees and Expenses (AFFE)		0.01%	0.01%
Total Annual Fund Operating Expenses	[1]	0.73%	0.98%
Less Fee Waiver and/or Expense Reimbursement	[2]	(0.07%)	(0.07%)
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1]	0.66%	0.91%

Example

The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same (taking into account the Advisor's contractual expense limitation for the first year only). Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example - High Yield Bond Series - USD ($)	AFTER 1 YEAR	AFTER 3 YEARS	AFTER 5 YEARS	AFTER 10 YEARS
CLASS I	67	226	399	900
CLASS S	93	305	535	1,195

Portfolio Turnover

The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 106% of the average value of its portfolio.

Principal Investment Strategies

The Series seeks to provide a high level of long-term total return, which is a combination of income and capital appreciation. The Series will invest, under normal circumstances, at least 80% of its net assets in bonds that are rated below investment grade (junk bonds) and other securities, principally exchange-traded funds (ETFs), that are designed to track the performance of non-investment grade securities. These bonds may include U.S. dollar denominated fixed income securities issued by U.S. and foreign corporations and governments, including those in emerging markets. The Series may also invest in securities of other investment companies, such as open-end or closed-end management investment companies. The Series may invest a portion of its assets in bank loans, which are, generally, non-investment grade floating rate investments.

Bond Selection Process — The Advisor attempts to identify securities that offer yields and credit spreads sufficient for the risks assumed. In analyzing the relative attractiveness of sectors and/or individual securities, the Advisor considers:

• The relevant economic conditions and sector trends.

• The interest rate sensitivities of the particular sectors and securities.

• The yield differentials across sectors, credit qualities, and maturities.

• “Bottom-up” factors such as an issuer’s financial status, market position, and managerial expertise.

Maturity and Portfolio Duration — The Series is not subject to any maturity or duration restrictions but will vary its average dollar weighted portfolio maturity and duration depending on the Advisor’s outlook for yields. For example, the Advisor may invest in longer-term fixed income securities when it expects yields to fall in order to realize gains for the Series. Likewise, the Advisor may invest in shorter-term fixed income securities when it expects yields to rise. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security’s price to changes in yields. The prices of fixed income securities with shorter durations generally will be less affected by changes in yields than the prices of fixed income securities with longer durations. For example, a 10 year duration means the fixed income security will decrease in value by 10% if yields rise 1% and increase in value by 10% if yields fall 1%.

Credit Quality — The Series will invest primarily in non-investment grade securities, those rated below BBB- by S&P or Baa3 by Moody’s, or determined to be of equivalent quality by the Advisor. The Series may also invest, to a limited extent, in investment grade securities when the Advisor considers their “credit spreads” (i.e., the difference between the bonds’ yields to maturity and those of U.S. Treasury bonds with similar maturities) to be attractive. The Series may invest in securities with any rating, including those that have defaulted, are not rated, or have had their rating withdrawn.

The Advisor will consider selling a security for one or more of the following reasons:

• it no longer meets the security selection criteria under which it was purchased;

• it has poor relative value (the spread has tightened such that the security is no longer considered attractively priced); or

• a more attractive investment opportunity is identified.

There are no prescribed limits on the sector allocation of the Series' investments and, from time to time, the Series may focus its investments in one or more sectors.

Principal Risks of Investing in the Series

As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series.

Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect.

Market risk — Because the Series invests in bonds, the value of your investment will fluctuate in response to changes in interest rates, credit spreads, and prepayment spreads, even though such changes will not affect the interest income derived from portfolio securities. You could lose money on your investment in the Series or the Series could underperform if any of the following occurs:

• U.S. and/or foreign bond markets decline.

• The issuer of a fixed income security owned by the Series defaults on its obligation to pay principal and/or interest, or the issuer has its credit rating downgraded; this risk is greater for junk bonds and other lower quality bonds.

• Interest rates rise, credit spreads widen, and/or prepayment spreads widen. The events alone or in combination can cause bond prices to fall and reduce the value of the Series’ portfolio. Longer-term bonds have a greater sensitivity to, and will therefore experience greater fluctuations in response to, interest rate changes than shorter-term bonds.

• Market volatility and/or prepayment spreads change to such a degree that prepayment uncertainty/risks are reassessed; the greater the uncertainty/risk, the wider the requisite prepayment spread.

Current market conditions may pose heightened risks for the Series. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the Series. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, the Series’ value may fluctuate and/or the Series may experience increased redemptions from shareholders, which may impact the Series’ liquidity or force the Series to sell securities into a declining or illiquid market.

Foreign securities risk — Because the Series may invest in securities of foreign issuers, the Series is subject to additional risks. These include risks of adverse changes in foreign economic, political, regulatory and other conditions. The prices of foreign fixed income securities may, at times, move in a different direction than the prices of fixed income securities issued in the United States.

Emerging markets risk — The Series may also have special risks due to its investments in emerging market countries. In addition to the risks discussed above relating to investments in foreign companies located in developed countries, the Series’ investments in emerging market countries are subject to the following risks:

• Emerging markets may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries.

• Emerging market countries often have less uniformity in accounting and reporting requirements and unreliable securities valuation.

• It is sometimes difficult to obtain and enforce court judgments in emerging market countries and there is often a greater potential for nationalization and/or expropriation of assets by the government of an emerging market country.

• There will tend to be an increased risk of price volatility associated with the Series’ investments in emerging market countries.

Investment company risk — To the extent the Series invests a portion of its assets in investment companies, those assets will be subject to the risks of the purchased investment company’s portfolio securities. The Series also will bear its proportionate share of the expenses of the purchased investment company in addition to its own expenses.

High-yield securities risk — The Series is subject to additional risks due to its ability to invest in high-yield securities (junk bonds):

• High-yield securities may underperform other sectors of the bond market, or the market as a whole.

• The performance of high-yield securities tends to be more volatile than that of other sectors of the bond market.

• Given the total size of the high-yield securities market, high-yield securities can be less liquid than investment grade securities.

• The Series’ investments in high-yield securities will subject it to a substantial degree of credit risk because the prospect for repayment of principal and interest of many of these bonds is speculative.

Bank loan risk — Investments in bank loans expose the Series to the credit risk of both the financial institution and the underlying borrower. The Series may also have difficulty valuing or disposing of bank loans because, in certain cases, the market for such instruments is not highly liquid.

Sector focus risk — Because the Series' investments may, from time to time, be more heavily invested in a particular sector or sectors, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those sectors. As a result, the Series' share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of sectors.

Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series’ management or performance.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders.

The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.

Summary of Past Performance

The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Class S shares of the Series for each calendar year since its reactivation. The Class S shares were formerly known as the High Yield Bond Series, with no class designation. The Series was previously active from March 3, 2003 to September 15, 2004. The Series was redeemed in full on September 15, 2004 and was reactivated on September 14, 2009. For years in which the Series was inactive or was not active for a full calendar year, no performance information is shown in the bar chart. Because the High Yield Bond Series has had several periods of activation and deactivation, its performance is not comparable to the performance of other mutual funds. The total return table shows how the average annual total returns for the Class S and Class I shares for different periods compare to those of two broad-based securities indices. The Series’ Class I shares commenced operations on August 1, 2012, and all performance below for the periods prior to that date reflect the performance and average annual total returns of the Series’ Class S shares. Because Class I shares of the Series invest in the same portfolio of securities, returns for the Class I shares will be substantially similar to those of the Class S shares. Performance will be different only to the extent that the Class I shares have lower expenses. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.

Calendar Years Ended December 31

Quarterly Returns
Highest (quarter ended 09/30/10): 6.81%
Lowest (quarter ended 09/30/15): (4.88)%

AVERAGE ANNUAL TOTAL RETURNS
FOR PERIODS ENDED DECEMBER 31, 2017

Average Annual Total Returns - High Yield Bond Series	1 Year	5 Years	Since Current Activation	Inception Date
Class S Shares	8.49%	5.41%	7.77%	Sep. 14, 2009
Class S Shares | Return After Taxes on Distributions	6.15%	2.63%	4.90%	Sep. 14, 2009
Class S Shares | Return After Taxes on Distributions and Sale of Series Shares	4.79%	2.89%	4.91%	Sep. 14, 2009
Class I Shares	8.68%	5.65%	7.93%	Sep. 14, 2009
ICE BofA Merrill Lynch U.S. High Yield, Cash Pay, BB-B Rated Index (reflect no deduction for fees, expenses, or taxes)	6.97%	5.57%	8.39%	Sep. 14, 2009
ICE BofA Merrill Lynch U.S. High Yield, Cash Pay Index (reflect no deduction for fees, expenses, or taxes)	7.48%	5.78%	8.78%	Sep. 14, 2009

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The after-tax figures are shown for one share class only, and would be different for the other share class. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

[2] Manning & Napier Advisors, LLC (the Advisor) has contractually agreed to limit its fees and reimburse expenses to the extent necessary so that the total direct annual fund operating expenses of each Class, exclusive of a Class’s Shareholder Services Fee, do not exceed 0.65% of each Class’s average daily net assets. This contractual waiver will continue until at least April 30, 2019 and may not be amended or terminated by the Advisor prior to such date without the approval of the Series’ Board of Directors. The Advisor’s agreement to limit each Class’s operating expenses is limited to direct operating expenses and, therefore, does not apply to AFFE, which are indirect expenses incurred by the Series through its investments in other investment companies.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	MANNING & NAPIER FUND, INC.
Prospectus Date	rr_ProspectusDate	May 01, 2018
High Yield Bond Series
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	High Yield Bond Series Summary Section
Objective [Heading]	rr_ObjectiveHeading	Investment Goal
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Series’ investment objective is to provide a high level of long-term total return by investing principally in non-investment grade fixed income securities that are issued by government and corporate entities.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Series.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	HIGH YIELD BOND SERIES Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund 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	April 30, 2019
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 106% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	106.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same (taking into account the Advisor's contractual expense limitation for the first year 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 Series seeks to provide a high level of long-term total return, which is a combination of income and capital appreciation. The Series will invest, under normal circumstances, at least 80% of its net assets in bonds that are rated below investment grade (junk bonds) and other securities, principally exchange-traded funds (ETFs), that are designed to track the performance of non-investment grade securities. These bonds may include U.S. dollar denominated fixed income securities issued by U.S. and foreign corporations and governments, including those in emerging markets. The Series may also invest in securities of other investment companies, such as open-end or closed-end management investment companies. The Series may invest a portion of its assets in bank loans, which are, generally, non-investment grade floating rate investments. Bond Selection Process — The Advisor attempts to identify securities that offer yields and credit spreads sufficient for the risks assumed. In analyzing the relative attractiveness of sectors and/or individual securities, the Advisor considers: The relevant economic conditions and sector trends. The interest rate sensitivities of the particular sectors and securities. The yield differentials across sectors, credit qualities, and maturities. “Bottom-up” factors such as an issuer’s financial status, market position, and managerial expertise. Maturity and Portfolio Duration — The Series is not subject to any maturity or duration restrictions but will vary its average dollar weighted portfolio maturity and duration depending on the Advisor’s outlook for yields. For example, the Advisor may invest in longer-term fixed income securities when it expects yields to fall in order to realize gains for the Series. Likewise, the Advisor may invest in shorter-term fixed income securities when it expects yields to rise. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security’s price to changes in yields. The prices of fixed income securities with shorter durations generally will be less affected by changes in yields than the prices of fixed income securities with longer durations. For example, a 10 year duration means the fixed income security will decrease in value by 10% if yields rise 1% and increase in value by 10% if yields fall 1%. Credit Quality — The Series will invest primarily in non-investment grade securities, those rated below BBB- by S&P or Baa3 by Moody’s, or determined to be of equivalent quality by the Advisor. The Series may also invest, to a limited extent, in investment grade securities when the Advisor considers their “credit spreads” (i.e., the difference between the bonds’ yields to maturity and those of U.S. Treasury bonds with similar maturities) to be attractive. The Series may invest in securities with any rating, including those that have defaulted, are not rated, or have had their rating withdrawn. The Advisor will consider selling a security for one or more of the following reasons: it no longer meets the security selection criteria under which it was purchased; it has poor relative value (the spread has tightened such that the security is no longer considered attractively priced); or a more attractive investment opportunity is identified. There are no prescribed limits on the sector allocation of the Series' investments and, from time to time, the Series may focus its investments in one or more sectors.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Series
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series. Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect. Market risk — Because the Series invests in bonds, the value of your investment will fluctuate in response to changes in interest rates, credit spreads, and prepayment spreads, even though such changes will not affect the interest income derived from portfolio securities. You could lose money on your investment in the Series or the Series could underperform if any of the following occurs: U.S. and/or foreign bond markets decline. The issuer of a fixed income security owned by the Series defaults on its obligation to pay principal and/or interest, or the issuer has its credit rating downgraded; this risk is greater for junk bonds and other lower quality bonds. Interest rates rise, credit spreads widen, and/or prepayment spreads widen. The events alone or in combination can cause bond prices to fall and reduce the value of the Series’ portfolio. Longer-term bonds have a greater sensitivity to, and will therefore experience greater fluctuations in response to, interest rate changes than shorter-term bonds. Market volatility and/or prepayment spreads change to such a degree that prepayment uncertainty/risks are reassessed; the greater the uncertainty/risk, the wider the requisite prepayment spread. Current market conditions may pose heightened risks for the Series. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the Series. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, the Series’ value may fluctuate and/or the Series may experience increased redemptions from shareholders, which may impact the Series’ liquidity or force the Series to sell securities into a declining or illiquid market. Foreign securities risk — Because the Series may invest in securities of foreign issuers, the Series is subject to additional risks. These include risks of adverse changes in foreign economic, political, regulatory and other conditions. The prices of foreign fixed income securities may, at times, move in a different direction than the prices of fixed income securities issued in the United States. Emerging markets risk — The Series may also have special risks due to its investments in emerging market countries. In addition to the risks discussed above relating to investments in foreign companies located in developed countries, the Series’ investments in emerging market countries are subject to the following risks: Emerging markets may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries. Emerging market countries often have less uniformity in accounting and reporting requirements and unreliable securities valuation. It is sometimes difficult to obtain and enforce court judgments in emerging market countries and there is often a greater potential for nationalization and/or expropriation of assets by the government of an emerging market country. There will tend to be an increased risk of price volatility associated with the Series’ investments in emerging market countries. Investment company risk — To the extent the Series invests a portion of its assets in investment companies, those assets will be subject to the risks of the purchased investment company’s portfolio securities. The Series also will bear its proportionate share of the expenses of the purchased investment company in addition to its own expenses. High-yield securities risk — The Series is subject to additional risks due to its ability to invest in high-yield securities (junk bonds): High-yield securities may underperform other sectors of the bond market, or the market as a whole. The performance of high-yield securities tends to be more volatile than that of other sectors of the bond market. Given the total size of the high-yield securities market, high-yield securities can be less liquid than investment grade securities. The Series’ investments in high-yield securities will subject it to a substantial degree of credit risk because the prospect for repayment of principal and interest of many of these bonds is speculative. Bank loan risk — Investments in bank loans expose the Series to the credit risk of both the financial institution and the underlying borrower. The Series may also have difficulty valuing or disposing of bank loans because, in certain cases, the market for such instruments is not highly liquid. Sector focus risk — Because the Series' investments may, from time to time, be more heavily invested in a particular sector or sectors, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those sectors. As a result, the Series' share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of sectors. Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series’ management or performance. Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders. The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the Series.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Summary of Past Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Class S shares of the Series for each calendar year since its reactivation. The Class S shares were formerly known as the High Yield Bond Series, with no class designation. The Series was previously active from March 3, 2003 to September 15, 2004. The Series was redeemed in full on September 15, 2004 and was reactivated on September 14, 2009. For years in which the Series was inactive or was not active for a full calendar year, no performance information is shown in the bar chart. Because the High Yield Bond Series has had several periods of activation and deactivation, its performance is not comparable to the performance of other mutual funds. The total return table shows how the average annual total returns for the Class S and Class I shares for different periods compare to those of two broad-based securities indices. The Series’ Class I shares commenced operations on August 1, 2012, and all performance below for the periods prior to that date reflect the performance and average annual total returns of the Series’ Class S shares. Because Class I shares of the Series invest in the same portfolio of securities, returns for the Class I shares will be substantially similar to those of the Class S shares. Performance will be different only to the extent that the Class I shares have lower expenses. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Class S shares of the Series for each calendar year since its reactivation. The Class S shares were formerly known as the High Yield Bond Series, with no class designation. The Series was previously active from March 3, 2003 to September 15, 2004. The Series was redeemed in full on September 15, 2004 and was reactivated on September 14, 2009. For years in which the Series was inactive or was not active for a full calendar year, no performance information is shown in the bar chart. Because the High Yield Bond Series has had several periods of activation and deactivation, its performance is not comparable to the performance of other mutual funds. The total return table shows how the average annual total returns for the Class S and Class I shares for different periods compare to those of two broad-based securities indices.
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.manning-napier.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Calendar Years Ended December 31
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Quarterly Returns Highest (quarter ended 09/30/10): 6.81% Lowest (quarter ended 09/30/15): (4.88)%
Performance Table Heading	rr_PerformanceTableHeading	AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2017
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	After-tax returns are not relevant to investors who hold their Series 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	The after-tax figures are shown for one share class only, and would be different for the other share class.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The after-tax figures are shown for one share class only, and would be different for the other share class. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
High Yield Bond Series | CLASS I
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees (fees paid directly from your investment)	rr_ShareholderFeeOther	none
Management Fees	rr_ManagementFeesOverAssets	0.55%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Shareholder Services Fee	rr_Component1OtherExpensesOverAssets	none
Remainder of Other Expenses	rr_Component2OtherExpensesOverAssets	0.17%
Other Expenses	rr_OtherExpensesOverAssets	0.17%
Acquired Fund Fees and Expenses (AFFE)	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.73%	[1]
Less Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.07%)	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.66%	[1]
AFTER 1 YEAR	rr_ExpenseExampleYear01	$ 67
AFTER 3 YEARS	rr_ExpenseExampleYear03	226
AFTER 5 YEARS	rr_ExpenseExampleYear05	399
AFTER 10 YEARS	rr_ExpenseExampleYear10	$ 900
1 Year	rr_AverageAnnualReturnYear01	8.68%
5 Years	rr_AverageAnnualReturnYear05	5.65%
Since Current Activation	rr_AverageAnnualReturnSinceInception	7.93%
Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 14, 2009
High Yield Bond Series | CLASS S
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees (fees paid directly from your investment)	rr_ShareholderFeeOther	none
Management Fees	rr_ManagementFeesOverAssets	0.55%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Shareholder Services Fee	rr_Component1OtherExpensesOverAssets	0.25%
Remainder of Other Expenses	rr_Component2OtherExpensesOverAssets	0.17%
Other Expenses	rr_OtherExpensesOverAssets	0.42%
Acquired Fund Fees and Expenses (AFFE)	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.98%	[1]
Less Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.07%)	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.91%	[1]
AFTER 1 YEAR	rr_ExpenseExampleYear01	$ 93
AFTER 3 YEARS	rr_ExpenseExampleYear03	305
AFTER 5 YEARS	rr_ExpenseExampleYear05	535
AFTER 10 YEARS	rr_ExpenseExampleYear10	$ 1,195
2010	rr_AnnualReturn2010	13.59%
2011	rr_AnnualReturn2011	4.87%
2012	rr_AnnualReturn2012	14.46%
2013	rr_AnnualReturn2013	7.17%
2014	rr_AnnualReturn2014	2.04%
2015	rr_AnnualReturn2015	(3.28%)
2016	rr_AnnualReturn2016	13.41%
2017	rr_AnnualReturn2017	8.49%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Highest
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Sep. 30, 2010
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	6.81%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Lowest
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2015
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(4.88%)
1 Year	rr_AverageAnnualReturnYear01	8.49%
5 Years	rr_AverageAnnualReturnYear05	5.41%
Since Current Activation	rr_AverageAnnualReturnSinceInception	7.77%
Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 14, 2009
High Yield Bond Series | Return After Taxes on Distributions | CLASS S
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	6.15%
5 Years	rr_AverageAnnualReturnYear05	2.63%
Since Current Activation	rr_AverageAnnualReturnSinceInception	4.90%
Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 14, 2009
High Yield Bond Series | Return After Taxes on Distributions and Sale of Series Shares | CLASS S
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	4.79%
5 Years	rr_AverageAnnualReturnYear05	2.89%
Since Current Activation	rr_AverageAnnualReturnSinceInception	4.91%
Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 14, 2009
High Yield Bond Series | ICE BofA Merrill Lynch U.S. High Yield, Cash Pay, BB-B Rated Index (reflect no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	6.97%
5 Years	rr_AverageAnnualReturnYear05	5.57%
Since Current Activation	rr_AverageAnnualReturnSinceInception	8.39%
Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 14, 2009
High Yield Bond Series | ICE BofA Merrill Lynch U.S. High Yield, Cash Pay Index (reflect no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	7.48%
5 Years	rr_AverageAnnualReturnYear05	5.78%
Since Current Activation	rr_AverageAnnualReturnSinceInception	8.78%
Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 14, 2009

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

[2] Manning & Napier Advisors, LLC (the Advisor) has contractually agreed to limit its fees and reimburse expenses to the extent necessary so that the total direct annual fund operating expenses of each Class, exclusive of a Class’s Shareholder Services Fee, do not exceed 0.65% of each Class’s average daily net assets. This contractual waiver will continue until at least April 30, 2019 and may not be amended or terminated by the Advisor prior to such date without the approval of the Series’ Board of Directors. The Advisor’s agreement to limit each Class’s operating expenses is limited to direct operating expenses and, therefore, does not apply to AFFE, which are indirect expenses incurred by the Series through its investments in other investment companies.

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International Series

International Series

Summary Section

Investment Goal

The Series’ investment objective is to provide long-term growth by investing principally in the common stocks of companies located outside the United States.

Fees and Expenses

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

INTERNATIONAL SERIES

Shareholder Fees
(paid directly from your investment)

Shareholder Fees - International Series - USD ($)	CLASS I	CLASS S
Shareholder Fees (paid directly from your investment)	none	none

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

Annual Fund Operating Expenses - International Series		CLASS I	CLASS S
Management Fees		0.75%	0.75%
Distribution (12b-1) Fees		none	none
Other Expenses		0.15%	0.40%
Shareholder Services Fee		none	0.25%
Remainder of Other Expenses		0.15%	0.15%
Acquired Fund Fees and Expenses (AFFE)		0.03%	0.03%
Total Annual Fund Operating Expenses	[1]	0.93%	1.18%
Less Fee Waiver and/or Expense Reimbursement	[2]	(0.05%)	(0.05%)
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1]	0.88%	1.13%

Example

The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same (taking into account the Advisor's contractual expense limitation for the first year only). Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example - International Series - USD ($)	AFTER 1 YEAR	AFTER 3 YEARS	AFTER 5 YEARS	AFTER 10 YEARS
CLASS I	90	291	510	1,138
CLASS S	115	370	644	1,427

Portfolio Turnover

The Series pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 125% of the average value of its portfolio.

Principal Investment Strategies

The Series invests primarily in common stocks of foreign companies, which may be located both in developed and in emerging markets. The Series may also invest in American Depository Receipts (ADRs) and other U.S. dollar denominated securities of foreign issuers.

The Advisor examines environmental risk factors, changes in macroeconomic variables, and equity market valuations of countries. This examination allows the Advisor to pinpoint investment opportunities being created by economic trends, political changes, demographic shifts, and government reforms taking place around the world, and also identify broad themes that cut across countries or issuers. This approach is called a “top-down” investment strategy, and is different from many stock funds because the Advisor’s primary focus is not on bottom-up individual stock selection. Rather, the Advisor focuses on actively managing the Series’ allocations to regions, countries, country-sectors, and currencies in accordance with the viewpoints generated from country analysis. The Series implements each top-down view by purchasing securities that it believes will benefit from those views. In building the portfolio, the Advisor seeks to minimize company- and security-specific risk by using a diversified basket approach to security selection and by taking into consideration current valuations as well as company-specific risk factors.

The Series may invest in stocks of small-, large-, or mid-size companies. The Series may purchase shares of exchange-traded funds (ETFs), including to establish a diversified position in a particular country, region, or market sector or to manage cash flows. The Advisor believes that purchasing ETFs may allow it to manage the Series’ portfolio more efficiently than would otherwise be possible. The Series may invest in cash and cash equivalents for defensive purposes or when seeking other investment opportunities.

The Series may, but is not required to, undertake hedging activities and may invest in forward foreign currency contracts to hedge currency risks associated with the purchase of individual securities denominated in a foreign currency.

The Series typically holds baskets of stocks in each top-down theme that it has identified. The Advisor may consider selling the entire basket for one or more of the following reasons:

• its view of the theme under which the basket was purchased deteriorates;

• the Advisor's expectations for the theme have been met; or

• a more attractive theme is identified.

In addition, the Advisor may consider selling individual securities within a basket for one or more of the following reasons:

• company-specific risks increase, reducing the security's fit within the basket's theme; or

• other securities are identified that better fit within the basket's theme.

There are no prescribed limits on the sector allocation of the Series' investments and, from time to time, the Series may focus its investments in one or more sectors.

Principal Risks of Investing in the Series

As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series.

Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect.

Market risk — Because the Series invests in stocks, the value of your investment will fluctuate in response to stock market movements. This means that you could lose money on your investment in the Series or the Series could underperform if any of the following occurs:

• U.S. and/or foreign stock markets decline.

• An adverse event, such as an unfavorable earnings report, depresses the value of one or more of the Series’ portfolio holdings.

Foreign securities risk — Because the Series may invest in securities of foreign issuers, the Series is subject to additional risks. These include risks of adverse changes in foreign economic, political, regulatory and other conditions. The prices of foreign common stocks may, at times, move in a different direction than the prices of U.S. stocks. The Series’ investments may be denominated in the currencies of the countries in which they are located; therefore, the value of the Series may be affected by changes in exchange rates between those foreign currencies and the U.S. dollar. The Advisor’s attempt to manage the currency risk described above may not accurately predict movements in currency exchange rates, which could cause the Series to sustain losses.

Emerging markets risk — The Series may also have special risks due to its investments in emerging market countries. In addition to the risks discussed above relating to investments in foreign companies located in developed countries, the Series’ investments in emerging market countries are subject to the following risks:

• Emerging markets may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries.

• Emerging market countries often have less uniformity in accounting and reporting requirements and unreliable securities valuation.

• It is sometimes difficult to obtain and enforce court judgments in emerging market countries and there is often a greater potential for nationalization and/or expropriation of assets by the government of an emerging market country.

• There will tend to be an increased risk of price volatility associated with the Series’ investments in emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

Large-cap risk — Large-cap stocks tend to go in and out of favor based on market and economic conditions. During a period when large-cap stocks fall behind other types of investments — small-cap stocks, for instance — the Series' performance could be reduced to the extent its portfolio is holding large-cap stocks.

Small- and mid-cap risk — The Series may also have special risks due to its investments in stocks of small- and mid-size companies. These risks include the following:

• The stocks of small- and mid-size companies may be subject to more abrupt or erratic market movements than the stocks of larger companies.

• The stocks of small- and mid-size companies may be subject to liquidity risk because such stocks may have lower trading volume and be less marketable than the stocks of larger companies. Liquidity risk is further described below.

• Small- and mid-size companies may have limited product lines, markets, or financial resources, and they may depend on a small management group. As a result, they fail more often than larger companies.

Forward contracts risk — The Series is subject to the following risks due to its ability to invest in forward contracts:

• Forwards, like all derivatives, can be extremely sensitive to changes in the market value of the underlying investment, and changes in the value of a forward contract may not correlate perfectly with the underlying investment.

• The Series may not be able to receive amounts payable to it under its forward contracts as quickly as it may be able to sell or otherwise obtain payments from other investments, so the Series’ investments in such contracts may not be as liquid as the Series’ other investments.

• The Series’ use of forwards is also subject to the risk that the counterparty to the forward contract will default or otherwise become unable to honor its obligation to the Series.

Risks related to ETFs — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio of securities. The Series will also bear its proportionate share of the expenses of the purchased ETF in addition to its own expenses.

Geographic focus risk — Because the Series' investments may, from time to time, be more heavily invested in a particular country or geographic region, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those countries and regions. As a result, the Series' share price may fluctuate more widely than the value of shares of a mutual fund holding more geographically diverse investments.

Sector focus risk — Because the Series' investments may, from time to time, be more heavily invested in a particular sector or sectors, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those sectors. As a result, the Series' share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of sectors.

Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series' management or performance.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders.

The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.

Summary of Past Performance

The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Class S shares of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Class S and Class I shares for different periods compare to those of a broad-based securities index. The Series’ Class I shares commenced operations on March 15, 2012, and all performance below for the periods prior to that date reflect the performance and average annual total returns of the Series’ Class S shares. Because Class I shares of the Series invest in the same portfolio of securities, returns for the Class I shares will be substantially similar to those of the Class S shares. Performance will be different only to the extent that the Class I shares have lower expenses. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.

Calendar Years Ended December 31

Quarterly Returns
Highest (quarter ended 09/30/09): 20.18%
Lowest (quarter ended 09/30/11): (21.17)%

AVERAGE ANNUAL TOTAL RETURNS
FOR PERIODS ENDED DECEMBER 31, 2017

Average Annual Total Returns - International Series	1 Year	5 Years	10 Years	Since Inception	[1]	Inception Date
Class S Shares	25.13%	6.99%	3.57%	8.11%		Aug. 27, 1992
Class S Shares | Return After Taxes on Distributions	24.44%	5.80%	2.57%	6.31%		Aug. 27, 1992
Class S Shares | Return After Taxes on Distributions and Sale of Series Shares	14.95%	5.38%	2.71%	6.33%		Aug. 27, 1992
Class I Shares	25.50%	7.28%	3.73%	8.18%		Aug. 27, 1992
MSCI ACWI ex USA Index (reflects no deduction for fees, expenses, or taxes)	27.19%	6.80%	1.84%	6.53%		Aug. 31, 1992

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The after-tax figures are shown for one share class only, and would be different for the other share class. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

[2] Manning & Napier Advisors, LLC (the Advisor) has contractually agreed to limit its fees and reimburse expenses to the extent necessary so that the total direct annual fund operating expenses of each Class, exclusive of a Class's Shareholder Services Fee, do not exceed 0.85% of each Class's average daily net assets. This contractual waiver will continue until at least April 30, 2019 and may not be amended or terminated by the Advisor prior to such date without the approval of the Series' Board of Directors. The Advisor's agreement to limit each Class's operating expenses is limited to direct operating expenses and, therefore, does not apply to AFFE, which are indirect expenses incurred by the Series through its investments in other investment companies.

[1] Performance numbers for the Series are calculated from August 27, 1992, the inception date of the Series' Class S shares. Performance numbers for Index are calculated from August 31, 1992.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	MANNING & NAPIER FUND, INC.
Prospectus Date	rr_ProspectusDate	May 01, 2018
International Series
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	International Series Summary Section
Objective [Heading]	rr_ObjectiveHeading	Investment Goal
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Series’ investment objective is to provide long-term growth by investing principally in the common stocks of companies located outside the United States.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Series.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	INTERNATIONAL SERIES Shareholder Fees (paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund 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	April 30, 2019
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Series pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 125% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	125.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series' financial statements) because the financial highlights include only the Series' direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same (taking into account the Advisor's contractual expense limitation for the first year 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 Series invests primarily in common stocks of foreign companies, which may be located both in developed and in emerging markets. The Series may also invest in American Depository Receipts (ADRs) and other U.S. dollar denominated securities of foreign issuers. The Advisor examines environmental risk factors, changes in macroeconomic variables, and equity market valuations of countries. This examination allows the Advisor to pinpoint investment opportunities being created by economic trends, political changes, demographic shifts, and government reforms taking place around the world, and also identify broad themes that cut across countries or issuers. This approach is called a “top-down” investment strategy, and is different from many stock funds because the Advisor’s primary focus is not on bottom-up individual stock selection. Rather, the Advisor focuses on actively managing the Series’ allocations to regions, countries, country-sectors, and currencies in accordance with the viewpoints generated from country analysis. The Series implements each top-down view by purchasing securities that it believes will benefit from those views. In building the portfolio, the Advisor seeks to minimize company- and security-specific risk by using a diversified basket approach to security selection and by taking into consideration current valuations as well as company-specific risk factors. The Series may invest in stocks of small-, large-, or mid-size companies. The Series may purchase shares of exchange-traded funds (ETFs), including to establish a diversified position in a particular country, region, or market sector or to manage cash flows. The Advisor believes that purchasing ETFs may allow it to manage the Series’ portfolio more efficiently than would otherwise be possible. The Series may invest in cash and cash equivalents for defensive purposes or when seeking other investment opportunities. The Series may, but is not required to, undertake hedging activities and may invest in forward foreign currency contracts to hedge currency risks associated with the purchase of individual securities denominated in a foreign currency. The Series typically holds baskets of stocks in each top-down theme that it has identified. The Advisor may consider selling the entire basket for one or more of the following reasons: its view of the theme under which the basket was purchased deteriorates; the Advisor's expectations for the theme have been met; or a more attractive theme is identified. In addition, the Advisor may consider selling individual securities within a basket for one or more of the following reasons: company-specific risks increase, reducing the security's fit within the basket's theme; or other securities are identified that better fit within the basket's theme. There are no prescribed limits on the sector allocation of the Series' investments and, from time to time, the Series may focus its investments in one or more sectors.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Series
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series. Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect. Market risk — Because the Series invests in stocks, the value of your investment will fluctuate in response to stock market movements. This means that you could lose money on your investment in the Series or the Series could underperform if any of the following occurs: U.S. and/or foreign stock markets decline. An adverse event, such as an unfavorable earnings report, depresses the value of one or more of the Series’ portfolio holdings. Foreign securities risk — Because the Series may invest in securities of foreign issuers, the Series is subject to additional risks. These include risks of adverse changes in foreign economic, political, regulatory and other conditions. The prices of foreign common stocks may, at times, move in a different direction than the prices of U.S. stocks. The Series’ investments may be denominated in the currencies of the countries in which they are located; therefore, the value of the Series may be affected by changes in exchange rates between those foreign currencies and the U.S. dollar. The Advisor’s attempt to manage the currency risk described above may not accurately predict movements in currency exchange rates, which could cause the Series to sustain losses. Emerging markets risk — The Series may also have special risks due to its investments in emerging market countries. In addition to the risks discussed above relating to investments in foreign companies located in developed countries, the Series’ investments in emerging market countries are subject to the following risks: Emerging markets may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries. Emerging market countries often have less uniformity in accounting and reporting requirements and unreliable securities valuation. It is sometimes difficult to obtain and enforce court judgments in emerging market countries and there is often a greater potential for nationalization and/or expropriation of assets by the government of an emerging market country. There will tend to be an increased risk of price volatility associated with the Series’ investments in emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar. Large-cap risk — Large-cap stocks tend to go in and out of favor based on market and economic conditions. During a period when large-cap stocks fall behind other types of investments — small-cap stocks, for instance — the Series' performance could be reduced to the extent its portfolio is holding large-cap stocks. Small- and mid-cap risk — The Series may also have special risks due to its investments in stocks of small- and mid-size companies. These risks include the following: The stocks of small- and mid-size companies may be subject to more abrupt or erratic market movements than the stocks of larger companies. The stocks of small- and mid-size companies may be subject to liquidity risk because such stocks may have lower trading volume and be less marketable than the stocks of larger companies. Liquidity risk is further described below. Small- and mid-size companies may have limited product lines, markets, or financial resources, and they may depend on a small management group. As a result, they fail more often than larger companies. Forward contracts risk — The Series is subject to the following risks due to its ability to invest in forward contracts: Forwards, like all derivatives, can be extremely sensitive to changes in the market value of the underlying investment, and changes in the value of a forward contract may not correlate perfectly with the underlying investment. The Series may not be able to receive amounts payable to it under its forward contracts as quickly as it may be able to sell or otherwise obtain payments from other investments, so the Series’ investments in such contracts may not be as liquid as the Series’ other investments. The Series’ use of forwards is also subject to the risk that the counterparty to the forward contract will default or otherwise become unable to honor its obligation to the Series. Risks related to ETFs — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio of securities. The Series will also bear its proportionate share of the expenses of the purchased ETF in addition to its own expenses. Geographic focus risk — Because the Series' investments may, from time to time, be more heavily invested in a particular country or geographic region, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those countries and regions. As a result, the Series' share price may fluctuate more widely than the value of shares of a mutual fund holding more geographically diverse investments. Sector focus risk — Because the Series' investments may, from time to time, be more heavily invested in a particular sector or sectors, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those sectors. As a result, the Series' share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of sectors. Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series' management or performance. Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders. The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the Series.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Summary of Past Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Class S shares of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Class S and Class I shares for different periods compare to those of a broad-based securities index. The Series’ Class I shares commenced operations on March 15, 2012, and all performance below for the periods prior to that date reflect the performance and average annual total returns of the Series’ Class S shares. Because Class I shares of the Series invest in the same portfolio of securities, returns for the Class I shares will be substantially similar to those of the Class S shares. Performance will be different only to the extent that the Class I shares have lower expenses. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Class S shares of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Class S and Class I shares for different periods compare to those of a broad-based securities index.
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.manning-napier.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Calendar Years Ended December 31
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Quarterly Returns Highest (quarter ended 09/30/09): 20.18% Lowest (quarter ended 09/30/11): (21.17)%
Performance Table Heading	rr_PerformanceTableHeading	AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2017
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	After-tax returns are not relevant to investors who hold their Series 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	The after-tax figures are shown for one share class only, and would be different for the other share class.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The after-tax figures are shown for one share class only, and would be different for the other share class. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
International Series | CLASS I
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees (paid directly from your investment)	rr_ShareholderFeeOther	none
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Shareholder Services Fee	rr_Component1OtherExpensesOverAssets	none
Remainder of Other Expenses	rr_Component2OtherExpensesOverAssets	0.15%
Other Expenses	rr_OtherExpensesOverAssets	0.15%
Acquired Fund Fees and Expenses (AFFE)	rr_AcquiredFundFeesAndExpensesOverAssets	0.03%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.93%	[1]
Less Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.05%)	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.88%	[1]
AFTER 1 YEAR	rr_ExpenseExampleYear01	$ 90
AFTER 3 YEARS	rr_ExpenseExampleYear03	291
AFTER 5 YEARS	rr_ExpenseExampleYear05	510
AFTER 10 YEARS	rr_ExpenseExampleYear10	$ 1,138
1 Year	rr_AverageAnnualReturnYear01	25.50%
5 Years	rr_AverageAnnualReturnYear05	7.28%
10 Years	rr_AverageAnnualReturnYear10	3.73%
Since Inception	rr_AverageAnnualReturnSinceInception	8.18%	[3]
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 27, 1992
International Series | CLASS S
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees (paid directly from your investment)	rr_ShareholderFeeOther	none
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Shareholder Services Fee	rr_Component1OtherExpensesOverAssets	0.25%
Remainder of Other Expenses	rr_Component2OtherExpensesOverAssets	0.15%
Other Expenses	rr_OtherExpensesOverAssets	0.40%
Acquired Fund Fees and Expenses (AFFE)	rr_AcquiredFundFeesAndExpensesOverAssets	0.03%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.18%	[1]
Less Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.05%)	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	1.13%	[1]
AFTER 1 YEAR	rr_ExpenseExampleYear01	$ 115
AFTER 3 YEARS	rr_ExpenseExampleYear03	370
AFTER 5 YEARS	rr_ExpenseExampleYear05	644
AFTER 10 YEARS	rr_ExpenseExampleYear10	$ 1,427
2008	rr_AnnualReturn2008	(33.25%)
2009	rr_AnnualReturn2009	34.23%
2010	rr_AnnualReturn2010	12.04%
2011	rr_AnnualReturn2011	(12.93%)
2012	rr_AnnualReturn2012	15.93%
2013	rr_AnnualReturn2013	19.69%
2014	rr_AnnualReturn2014	(7.03%)
2015	rr_AnnualReturn2015	(3.72%)
2016	rr_AnnualReturn2016	4.55%
2017	rr_AnnualReturn2017	25.13%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Highest
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Sep. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	20.18%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Lowest
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2011
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(21.17%)
1 Year	rr_AverageAnnualReturnYear01	25.13%
5 Years	rr_AverageAnnualReturnYear05	6.99%
10 Years	rr_AverageAnnualReturnYear10	3.57%
Since Inception	rr_AverageAnnualReturnSinceInception	8.11%	[3]
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 27, 1992
International Series | Return After Taxes on Distributions | CLASS S
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	24.44%
5 Years	rr_AverageAnnualReturnYear05	5.80%
10 Years	rr_AverageAnnualReturnYear10	2.57%
Since Inception	rr_AverageAnnualReturnSinceInception	6.31%	[3]
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 27, 1992
International Series | Return After Taxes on Distributions and Sale of Series Shares | CLASS S
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	14.95%
5 Years	rr_AverageAnnualReturnYear05	5.38%
10 Years	rr_AverageAnnualReturnYear10	2.71%
Since Inception	rr_AverageAnnualReturnSinceInception	6.33%	[3]
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 27, 1992
International Series | MSCI ACWI ex USA Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	27.19%
5 Years	rr_AverageAnnualReturnYear05	6.80%
10 Years	rr_AverageAnnualReturnYear10	1.84%
Since Inception	rr_AverageAnnualReturnSinceInception	6.53%	[3]
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 31, 1992

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

[2] Manning & Napier Advisors, LLC (the Advisor) has contractually agreed to limit its fees and reimburse expenses to the extent necessary so that the total direct annual fund operating expenses of each Class, exclusive of a Class's Shareholder Services Fee, do not exceed 0.85% of each Class's average daily net assets. This contractual waiver will continue until at least April 30, 2019 and may not be amended or terminated by the Advisor prior to such date without the approval of the Series' Board of Directors. The Advisor's agreement to limit each Class's operating expenses is limited to direct operating expenses and, therefore, does not apply to AFFE, which are indirect expenses incurred by the Series through its investments in other investment companies.

[3] Performance numbers for the Series are calculated from August 27, 1992, the inception date of the Series' Class S shares. Performance numbers for Index are calculated from August 31, 1992.

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New York Tax Exempt Series

New York Tax Exempt Series

Summary Section

Investment Goal

The Series’ investment objective is to provide as high a level of current income exempt from federal income tax and New York State personal income tax as the Advisor believes is consistent with the preservation of capital.

Fees and Expenses

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

NEW YORK TAX EXEMPT SERIES

Shareholder Fees
(paid directly from your investment)

Shareholder Fees	New York Tax Exempt Series New York Tax Exempt Series USD ($)
Shareholder Fees (paid directly from your investment)	none

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

Annual Fund Operating Expenses	New York Tax Exempt Series New York Tax Exempt Series
Management Fees	0.50%
Distribution and Service (12b-1) Fees	none
Other Expenses	0.10%
Total Annual Fund Operating Expenses	0.60%	[1]

Example

The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	AFTER 1 YEAR	AFTER 3 YEARS	AFTER 5 YEARS	AFTER 10 YEARS
New York Tax Exempt Series | New York Tax Exempt Series | USD ($)	61	192	335	750

Portfolio Turnover

The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 9% of the average value of its portfolio.

Principal Investment Strategies

The Series invests primarily in municipal bonds and other securities the income from which is exempt from federal income tax and New York State personal income tax. The Series will, under normal circumstances, invest at least 80% of its net assets in securities the income from which is exempt from federal and New York income tax, including the Alternative Minimum Tax (AMT). The main issuers of these securities are state and local agencies in New York. In selecting investments for the Series, the Advisor attempts to balance the Series' goals of high income and capital preservation. With this approach, the Advisor attempts to build a portfolio that it believes provides the opportunity to earn current income; however, the Advisor will only purchase investment grade securities, or those securities determined by the Advisor to be of equivalent quality, and will maintain other selection criteria in an attempt to avoid permanent capital loss.

Bond Selection Process — The Advisor emphasizes those bond market sectors and selects for the Series those securities that it believes offer yields sufficient to compensate the investor for the risks specific to the security or sector. In analyzing the relative attractiveness of sectors and individual securities, the Advisor considers:

• The interest rate sensitivity of each security.

• The narrowing or widening of interest rate spreads between sectors, securities of different credit quality or securities of different maturities.

Maturity and Portfolio Duration — The Series is not subject to any maturity or duration restrictions but will vary its average dollar weighted portfolio maturity and duration depending on the Advisor’s outlook for yields. For example, the Advisor may invest in longer-term bonds when it expects yields to fall in order to realize gains for the Series. Likewise, the Advisor may invest in shorter-term bonds when it expects yields to rise. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security’s price to changes in yields. The prices of fixed income securities with shorter durations generally will be less affected by changes in yields than the prices of fixed income securities with longer durations. For example, a 10 year duration means the fixed income security will decrease in value by 10% if yields rise 1% and increase in value by 10% if yields fall 1%.

Credit Quality — The Series’ investments will be limited to investment grade securities, those rated BBB- or above by S&P or Baa3 or above by Moody’s, or determined by the Advisor to be of equivalent quality.

The Series may invest in taxable investments, including obligations of the U.S. Government, its agencies or instrumentalities. The Series may also invest in money market instruments or hold its assets in cash. These investments may cause the Series to make a taxable distribution to shareholders.

The Advisor will consider selling a security for one or more of the following reasons:

• to adjust the Series' duration and/or yield curve positioning;

• there is a deterioration in the credit quality of the issuer;

• the security's relative value has declined (the spread has tightened such that the security is no longer considered attractively priced); or

• a more attractive investment opportunity is identified.

Principal Risks of Investing in the Series

As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series.

Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect.

Market risk — Because the Series invests in bonds, the value of your investment will fluctuate in response to changes in interest rates and/or credit spreads, even though such changes will not affect the interest income derived from portfolio securities. You could lose money on your investment in the Series or the Series could underperform if any of the following occurs:

• U.S. and/or foreign bond markets decline.

• The issuer of a bond owned by the Series defaults on its obligation to pay principal or interest or has its credit rating downgraded.

• Interest rates rise and/or credit spreads widen. These events alone or in combination can cause bond prices to fall and reduce the value of the Series’ portfolio. Longer-term bonds have greater sensitivity to, and will therefore experience greater fluctuations in response to, interest rate changes than shorter-term bonds.

• Market volatility and/or prepayment spreads change to such a degree that prepayment uncertainty/risks are reassessed; the greater the uncertainty/risk, the wider the requisite prepayment spread.

Current market conditions may pose heightened risks for the Series. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the Series. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, the Series’ value may fluctuate and/or the Series may experience increased redemptions from shareholders, which may impact the Series’ liquidity or force the Series to sell securities into a declining or illiquid market.

Municipal bond risk — In addition to the general risks of bond funds, the Series is subject to the following additional risks due to its focus on municipal bonds:

• Changes in the financial condition of municipal issuers may adversely affect the value of the Series’ securities.

• Economic or political changes may affect the ability of issuers of municipal securities to repay principal and to make interest payments on securities owned by the Series.

• Poor statewide or local economic results or changing political sentiments may reduce tax revenues and increase the expenses of municipal issuers, making it more difficult for them to meet their obligations.

New York State municipal bond risk — In addition to the risks of bond funds in general and more specifically of municipal bond funds, this Series has the following special risks:

• Concentration in New York tax exempt securities may lead to more volatility than if the Series invested in securities from a number of different states.

• The Series is sensitive to political, economic, or demographic developments within the state, public authorities, or political subdivisions, particularly in the New York City area.

• The Series is subject to the risk that its market segment (New York tax exempt securities) may underperform other fixed income market segments or the fixed income markets as a whole.

• New York’s economy is heavily dependent on the financial sector, and the Series may be adversely affected by economic problems affecting that sector.

Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series’ management or performance.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders.

The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.

Summary of Past Performance

The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Series for different periods compare to those of a broad-based securities index. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.

Calendar Years Ended December 31

Quarterly Returns
Highest (quarter ended 09/30/09): 6.23%
Lowest (quarter ended 12/31/10): (5.27)%

AVERAGE ANNUAL TOTAL RETURNS
FOR PERIODS ENDED DECEMBER 31, 2017

Average Annual Total Returns - New York Tax Exempt Series	1 Year	5 Years	10 Years	Since Inception	Inception Date
New York Tax Exempt Series	2.27%	0.50%	2.38%	3.62%	Jan. 17, 1994
New York Tax Exempt Series | Return After Taxes on Distributions	2.26%	0.46%	2.33%	3.57%	Jan. 17, 1994
New York Tax Exempt Series | Return After Taxes on Distributions and Sale of Series Shares	1.76%	0.62%	2.32%	3.55%	Jan. 17, 1994
ICE BofA Merrill Lynch 1-12 Year Municipal Bond Index (reflects no deduction for fees, expenses, or taxes)	3.20%	1.93%	3.52%	4.48%	Jan. 17, 1994

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratio in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

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Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	MANNING & NAPIER FUND, INC.
Prospectus Date	rr_ProspectusDate	May 01, 2018
New York Tax Exempt Series
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	New York Tax Exempt Series Summary Section
Objective [Heading]	rr_ObjectiveHeading	Investment Goal
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Series’ investment objective is to provide as high a level of current income exempt from federal income tax and New York State personal income tax as the Advisor believes is consistent with the preservation of capital.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Series.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	NEW YORK TAX EXEMPT SERIES Shareholder Fees (paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund 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 Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 9% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	9.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	The total annual fund operating expenses in this fee table may not correlate to the expense ratio in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ 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 Series invests primarily in municipal bonds and other securities the income from which is exempt from federal income tax and New York State personal income tax. The Series will, under normal circumstances, invest at least 80% of its net assets in securities the income from which is exempt from federal and New York income tax, including the Alternative Minimum Tax (AMT). The main issuers of these securities are state and local agencies in New York. In selecting investments for the Series, the Advisor attempts to balance the Series' goals of high income and capital preservation. With this approach, the Advisor attempts to build a portfolio that it believes provides the opportunity to earn current income; however, the Advisor will only purchase investment grade securities, or those securities determined by the Advisor to be of equivalent quality, and will maintain other selection criteria in an attempt to avoid permanent capital loss. Bond Selection Process — The Advisor emphasizes those bond market sectors and selects for the Series those securities that it believes offer yields sufficient to compensate the investor for the risks specific to the security or sector. In analyzing the relative attractiveness of sectors and individual securities, the Advisor considers: The interest rate sensitivity of each security. The narrowing or widening of interest rate spreads between sectors, securities of different credit quality or securities of different maturities. Maturity and Portfolio Duration — The Series is not subject to any maturity or duration restrictions but will vary its average dollar weighted portfolio maturity and duration depending on the Advisor’s outlook for yields. For example, the Advisor may invest in longer-term bonds when it expects yields to fall in order to realize gains for the Series. Likewise, the Advisor may invest in shorter-term bonds when it expects yields to rise. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security’s price to changes in yields. The prices of fixed income securities with shorter durations generally will be less affected by changes in yields than the prices of fixed income securities with longer durations. For example, a 10 year duration means the fixed income security will decrease in value by 10% if yields rise 1% and increase in value by 10% if yields fall 1%. Credit Quality — The Series’ investments will be limited to investment grade securities, those rated BBB- or above by S&P or Baa3 or above by Moody’s, or determined by the Advisor to be of equivalent quality. The Series may invest in taxable investments, including obligations of the U.S. Government, its agencies or instrumentalities. The Series may also invest in money market instruments or hold its assets in cash. These investments may cause the Series to make a taxable distribution to shareholders. The Advisor will consider selling a security for one or more of the following reasons: to adjust the Series' duration and/or yield curve positioning; there is a deterioration in the credit quality of the issuer; the security's relative value has declined (the spread has tightened such that the security is no longer considered attractively priced); or a more attractive investment opportunity is identified.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Series
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series. Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect. Market risk — Because the Series invests in bonds, the value of your investment will fluctuate in response to changes in interest rates and/or credit spreads, even though such changes will not affect the interest income derived from portfolio securities. You could lose money on your investment in the Series or the Series could underperform if any of the following occurs: U.S. and/or foreign bond markets decline. The issuer of a bond owned by the Series defaults on its obligation to pay principal or interest or has its credit rating downgraded. Interest rates rise and/or credit spreads widen. These events alone or in combination can cause bond prices to fall and reduce the value of the Series’ portfolio. Longer-term bonds have greater sensitivity to, and will therefore experience greater fluctuations in response to, interest rate changes than shorter-term bonds. Market volatility and/or prepayment spreads change to such a degree that prepayment uncertainty/risks are reassessed; the greater the uncertainty/risk, the wider the requisite prepayment spread. Current market conditions may pose heightened risks for the Series. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the Series. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, the Series’ value may fluctuate and/or the Series may experience increased redemptions from shareholders, which may impact the Series’ liquidity or force the Series to sell securities into a declining or illiquid market. Municipal bond risk — In addition to the general risks of bond funds, the Series is subject to the following additional risks due to its focus on municipal bonds: Changes in the financial condition of municipal issuers may adversely affect the value of the Series’ securities. Economic or political changes may affect the ability of issuers of municipal securities to repay principal and to make interest payments on securities owned by the Series. Poor statewide or local economic results or changing political sentiments may reduce tax revenues and increase the expenses of municipal issuers, making it more difficult for them to meet their obligations. New York State municipal bond risk — In addition to the risks of bond funds in general and more specifically of municipal bond funds, this Series has the following special risks: Concentration in New York tax exempt securities may lead to more volatility than if the Series invested in securities from a number of different states. The Series is sensitive to political, economic, or demographic developments within the state, public authorities, or political subdivisions, particularly in the New York City area. The Series is subject to the risk that its market segment (New York tax exempt securities) may underperform other fixed income market segments or the fixed income markets as a whole. New York’s economy is heavily dependent on the financial sector, and the Series may be adversely affected by economic problems affecting that sector. Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series’ management or performance. Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders. The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the Series.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Summary of Past Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Series for different periods compare to those of a broad-based securities index. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Series for different periods compare to those of a broad-based securities index.
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.manning-napier.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Calendar Years Ended December 31
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Quarterly Returns Highest (quarter ended 09/30/09): 6.23% Lowest (quarter ended 12/31/10): (5.27)%
Performance Table Heading	rr_PerformanceTableHeading	AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2017
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
New York Tax Exempt Series | New York Tax Exempt Series
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees (paid directly from your investment)	rr_ShareholderFeeOther	none
Management Fees	rr_ManagementFeesOverAssets	0.50%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.10%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.60%	[1]
AFTER 1 YEAR	rr_ExpenseExampleYear01	$ 61
AFTER 3 YEARS	rr_ExpenseExampleYear03	192
AFTER 5 YEARS	rr_ExpenseExampleYear05	335
AFTER 10 YEARS	rr_ExpenseExampleYear10	$ 750
2008	rr_AnnualReturn2008	(2.37%)
2009	rr_AnnualReturn2009	12.46%
2010	rr_AnnualReturn2010	0.32%
2011	rr_AnnualReturn2011	8.37%
2012	rr_AnnualReturn2012	3.31%
2013	rr_AnnualReturn2013	(1.72%)
2014	rr_AnnualReturn2014	1.28%
2015	rr_AnnualReturn2015	1.54%
2016	rr_AnnualReturn2016	(0.79%)
2017	rr_AnnualReturn2017	2.27%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Highest
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Sep. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	6.23%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Lowest
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2010
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(5.27%)
1 Year	rr_AverageAnnualReturnYear01	2.27%
5 Years	rr_AverageAnnualReturnYear05	0.50%
10 Years	rr_AverageAnnualReturnYear10	2.38%
Since Inception	rr_AverageAnnualReturnSinceInception	3.62%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 17, 1994
New York Tax Exempt Series | Return After Taxes on Distributions | New York Tax Exempt Series
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	2.26%
5 Years	rr_AverageAnnualReturnYear05	0.46%
10 Years	rr_AverageAnnualReturnYear10	2.33%
Since Inception	rr_AverageAnnualReturnSinceInception	3.57%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 17, 1994
New York Tax Exempt Series | Return After Taxes on Distributions and Sale of Series Shares | New York Tax Exempt Series
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	1.76%
5 Years	rr_AverageAnnualReturnYear05	0.62%
10 Years	rr_AverageAnnualReturnYear10	2.32%
Since Inception	rr_AverageAnnualReturnSinceInception	3.55%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 17, 1994
New York Tax Exempt Series | ICE BofA Merrill Lynch 1-12 Year Municipal Bond Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	3.20%
5 Years	rr_AverageAnnualReturnYear05	1.93%
10 Years	rr_AverageAnnualReturnYear10	3.52%
Since Inception	rr_AverageAnnualReturnSinceInception	4.48%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 17, 1994

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratio in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

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Ohio Tax Exempt Series

Ohio Tax Exempt Series

Summary Section

Investment Goal

The Series’ investment objective is to provide as high a level of current income exempt from federal income tax and Ohio State personal income tax as the Advisor believes is consistent with the preservation of capital.

Fees and Expenses

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

OHIO TAX EXEMPT SERIES

Shareholder Fees
(paid directly from your investment)

Shareholder Fees	Ohio Tax Exempt Series Ohio Tax Exempt Series USD ($)
Shareholder Fees (paid directly from your investment)	none

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

Annual Fund Operating Expenses	Ohio Tax Exempt Series Ohio Tax Exempt Series
Management Fees	0.50%
Distribution and Service (12b-1) Fees	none
Other Expenses	0.28%
Total Annual Fund Operating Expenses	0.78%	[1]

Example

The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	AFTER 1 YEAR	AFTER 3 YEARS	AFTER 5 YEARS	AFTER 10 YEARS
Ohio Tax Exempt Series | Ohio Tax Exempt Series | USD ($)	80	249	433	966

Portfolio Turnover

The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 8% of the average value of its portfolio.

Principal Investment Strategies

The Series invests primarily in municipal bonds and other securities the income from which is exempt from federal income tax and Ohio State personal income tax. The Series will, under normal circumstances, invest at least 80% of its net assets in securities the income from which is exempt from federal and Ohio income tax, including the Alternative Minimum Tax (AMT). The main issuers of these securities are state and local agencies in Ohio. In selecting investments for the Series, the Advisor attempts to balance the Series' goals of high income and capital preservation. With this approach, the Advisor attempts to build a portfolio that it believes provides the opportunity to earn current income; however, the Advisor will only purchase investment grade securities, or those determined by the Advisor to be of equivalent quality, and will maintain other selection criteria in an attempt to avoid permanent capital loss.

Bond Selection Process — The Advisor emphasizes those bond market sectors and selects for the Series those securities that it believes offer yields sufficient to compensate the investor for the risks specific to the security or sector. In analyzing the relative attractiveness of sectors and individual securities, the Advisor considers:

• The interest rate sensitivity of each security.

• The narrowing or widening of interest rate spreads between sectors, securities of different credit quality or securities of different maturities.

Maturity and Portfolio Duration — The Series is not subject to any maturity or duration restrictions but will vary its average dollar weighted portfolio maturity and duration depending on the Advisor’s outlook for yields. For example, the Advisor may invest in longer-term bonds when it expects yields to fall in order to realize gains for the Series. Likewise, the Advisor may invest in shorter-term bonds when it expects yields to rise. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security’s price to changes in yields. The prices of fixed income securities with shorter durations generally will be less affected by changes in yields than the prices of fixed income securities with longer durations. For example, a 10 year duration means the fixed income security will decrease in value by 10% if yields rise 1% and increase in value by 10% if yields fall 1%.

Credit Quality — The Series’ investments will be limited to investment grade securities, those rated BBB- or above by S&P or Baa3 or above by Moody’s or determined by the Advisor to be of equivalent quality.

The Series may invest in taxable investments, including obligations of the U.S. Government, its agencies or instrumentalities. The Series may also invest in money market instruments or hold its assets in cash. These investments may cause the Series to make a taxable distribution to shareholders.

The Advisor will consider selling a security for one or more of the following reasons:

• to adjust the Series' duration and/or yield curve positioning;

• there is a deterioration in the credit quality of the issuer;

• the security's relative value has declined (the spread has tightened such that the security is no longer considered attractively priced); or

• a more attractive investment opportunity is identified.

Principal Risks of Investing in the Series

As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series.

Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect.

Market risk — Because the Series invests in bonds, the value of your investment will fluctuate in response to changes in interest rates and/or credit spreads, even though such changes will not affect the interest income derived from portfolio securities. You could lose money on your investment in the Series or the Series could underperform if any of the following occurs:

• U.S. and/or foreign bond markets decline.

• The issuer of a bond owned by the Series defaults on its obligation to pay principal or interest or has its credit rating downgraded.

• Interest rates rise and/or credit spreads widen. These events alone or in combination can cause bond prices to fall and reduce the value of the Series’ portfolio. Longer-term bonds have greater sensitivity to, and will therefore experience greater fluctuations in response to, interest rate changes than shorter-term bonds.

• Market volatility and/or prepayment spreads change to such a degree that prepayment uncertainty/risks are reassessed; the greater the uncertainty/risk, the wider the requisite prepayment spread.

Current market conditions may pose heightened risks for the Series. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the Series. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, the Series' value may fluctuate and/or the Series may experience increased redemptions from shareholders, which may impact the Series' liquidity or force the Series to sell securities into a declining or illiquid market.

Municipal bond risk — In addition to the general risks of bond funds, the Series is subject to the following additional risks due to its focus on municipal bonds:

• Changes in the financial condition of municipal issuers may adversely affect the value of the Series’ securities.

• Economic or political changes may affect the ability of issuers of municipal securities to repay principal and to make interest payments on securities owned by the Series.

• Poor statewide or local economic results or changing political sentiments may reduce tax revenues and increase the expenses of municipal issuers, making it more difficult for them to meet their obligations.

Ohio State municipal bond risk — In addition to the risks of bond funds in general and more specifically of municipal bond funds, this Series has the following special risks:

• Concentration in Ohio tax exempt securities may lead to more volatility than if the Series invested in securities from a number of different states.

• The Series is sensitive to political, economic, or demographic developments within the state, public authorities, or political subdivisions.

• The Series is subject to the risk that its market segment (Ohio tax exempt securities) may underperform other fixed income market segments or the fixed income markets as a whole.

• Ohio’s economy is heavily dependent on the manufacturing sector and the Series may be adversely affected by economic problems affecting that sector.

Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series' management or performance.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders.

The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.

Summary of Past Performance

The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Series for different periods compare to those of a broad-based securities index. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.

Calendar Years Ended December 31

Quarterly Returns
Highest (quarter ended 09/30/09): 7.42%
Lowest (quarter ended 12/31/10): (5.86)%

AVERAGE ANNUAL TOTAL RETURNS
FOR PERIODS ENDED DECEMBER 31, 2017

Average Annual Total Returns - Ohio Tax Exempt Series	1 Year	5 Years	10 Years	Since Inception	Inception Date
Ohio Tax Exempt Series	2.08%	0.44%	2.45%	3.60%	Feb. 14, 1994
Ohio Tax Exempt Series | Return After Taxes on Distributions	2.08%	0.39%	2.37%	3.54%	Feb. 14, 1994
Ohio Tax Exempt Series | Return After Taxes on Distributions and Sale of Series Shares	1.58%	0.53%	2.34%	3.50%	Feb. 14, 1994
ICE BofA Merrill Lynch 1-12 Year Municipal Bond Index (reflects no deduction for fees, expenses, or taxes)	3.20%	1.93%	3.52%	4.49%	Feb. 14, 1994

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratio in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	MANNING & NAPIER FUND, INC.
Prospectus Date	rr_ProspectusDate	May 01, 2018
Ohio Tax Exempt Series
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Ohio Tax Exempt Series Summary Section
Objective [Heading]	rr_ObjectiveHeading	Investment Goal
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Series’ investment objective is to provide as high a level of current income exempt from federal income tax and Ohio State personal income tax as the Advisor believes is consistent with the preservation of capital.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Series.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	OHIO TAX EXEMPT SERIES Shareholder Fees (paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund 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 Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 8% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	8.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	The total annual fund operating expenses in this fee table may not correlate to the expense ratio in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ 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 Series invests primarily in municipal bonds and other securities the income from which is exempt from federal income tax and Ohio State personal income tax. The Series will, under normal circumstances, invest at least 80% of its net assets in securities the income from which is exempt from federal and Ohio income tax, including the Alternative Minimum Tax (AMT). The main issuers of these securities are state and local agencies in Ohio. In selecting investments for the Series, the Advisor attempts to balance the Series' goals of high income and capital preservation. With this approach, the Advisor attempts to build a portfolio that it believes provides the opportunity to earn current income; however, the Advisor will only purchase investment grade securities, or those determined by the Advisor to be of equivalent quality, and will maintain other selection criteria in an attempt to avoid permanent capital loss. Bond Selection Process — The Advisor emphasizes those bond market sectors and selects for the Series those securities that it believes offer yields sufficient to compensate the investor for the risks specific to the security or sector. In analyzing the relative attractiveness of sectors and individual securities, the Advisor considers: The interest rate sensitivity of each security. The narrowing or widening of interest rate spreads between sectors, securities of different credit quality or securities of different maturities. Maturity and Portfolio Duration — The Series is not subject to any maturity or duration restrictions but will vary its average dollar weighted portfolio maturity and duration depending on the Advisor’s outlook for yields. For example, the Advisor may invest in longer-term bonds when it expects yields to fall in order to realize gains for the Series. Likewise, the Advisor may invest in shorter-term bonds when it expects yields to rise. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security’s price to changes in yields. The prices of fixed income securities with shorter durations generally will be less affected by changes in yields than the prices of fixed income securities with longer durations. For example, a 10 year duration means the fixed income security will decrease in value by 10% if yields rise 1% and increase in value by 10% if yields fall 1%. Credit Quality — The Series’ investments will be limited to investment grade securities, those rated BBB- or above by S&P or Baa3 or above by Moody’s or determined by the Advisor to be of equivalent quality. The Series may invest in taxable investments, including obligations of the U.S. Government, its agencies or instrumentalities. The Series may also invest in money market instruments or hold its assets in cash. These investments may cause the Series to make a taxable distribution to shareholders. The Advisor will consider selling a security for one or more of the following reasons: to adjust the Series' duration and/or yield curve positioning; there is a deterioration in the credit quality of the issuer; the security's relative value has declined (the spread has tightened such that the security is no longer considered attractively priced); or a more attractive investment opportunity is identified.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Series
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series. Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect. Market risk — Because the Series invests in bonds, the value of your investment will fluctuate in response to changes in interest rates and/or credit spreads, even though such changes will not affect the interest income derived from portfolio securities. You could lose money on your investment in the Series or the Series could underperform if any of the following occurs: U.S. and/or foreign bond markets decline. The issuer of a bond owned by the Series defaults on its obligation to pay principal or interest or has its credit rating downgraded. Interest rates rise and/or credit spreads widen. These events alone or in combination can cause bond prices to fall and reduce the value of the Series’ portfolio. Longer-term bonds have greater sensitivity to, and will therefore experience greater fluctuations in response to, interest rate changes than shorter-term bonds. Market volatility and/or prepayment spreads change to such a degree that prepayment uncertainty/risks are reassessed; the greater the uncertainty/risk, the wider the requisite prepayment spread. Current market conditions may pose heightened risks for the Series. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the Series. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, the Series' value may fluctuate and/or the Series may experience increased redemptions from shareholders, which may impact the Series' liquidity or force the Series to sell securities into a declining or illiquid market. Municipal bond risk — In addition to the general risks of bond funds, the Series is subject to the following additional risks due to its focus on municipal bonds: Changes in the financial condition of municipal issuers may adversely affect the value of the Series’ securities. Economic or political changes may affect the ability of issuers of municipal securities to repay principal and to make interest payments on securities owned by the Series. Poor statewide or local economic results or changing political sentiments may reduce tax revenues and increase the expenses of municipal issuers, making it more difficult for them to meet their obligations. Ohio State municipal bond risk — In addition to the risks of bond funds in general and more specifically of municipal bond funds, this Series has the following special risks: Concentration in Ohio tax exempt securities may lead to more volatility than if the Series invested in securities from a number of different states. The Series is sensitive to political, economic, or demographic developments within the state, public authorities, or political subdivisions. The Series is subject to the risk that its market segment (Ohio tax exempt securities) may underperform other fixed income market segments or the fixed income markets as a whole. Ohio’s economy is heavily dependent on the manufacturing sector and the Series may be adversely affected by economic problems affecting that sector. Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series' management or performance. Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders. The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the Series.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Summary of Past Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Series for different periods compare to those of a broad-based securities index. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Series for different periods compare to those of a broad-based securities index.
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.manning-napier.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Calendar Years Ended December 31
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Quarterly Returns Highest (quarter ended 09/30/09): 7.42% Lowest (quarter ended 12/31/10): (5.86)%
Performance Table Heading	rr_PerformanceTableHeading	AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2017
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Ohio Tax Exempt Series | Ohio Tax Exempt Series
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees (paid directly from your investment)	rr_ShareholderFeeOther	none
Management Fees	rr_ManagementFeesOverAssets	0.50%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.28%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.78%	[1]
AFTER 1 YEAR	rr_ExpenseExampleYear01	$ 80
AFTER 3 YEARS	rr_ExpenseExampleYear03	249
AFTER 5 YEARS	rr_ExpenseExampleYear05	433
AFTER 10 YEARS	rr_ExpenseExampleYear10	$ 966
2008	rr_AnnualReturn2008	(1.74%)
2009	rr_AnnualReturn2009	13.09%
2010	rr_AnnualReturn2010	0.14%
2011	rr_AnnualReturn2011	8.65%
2012	rr_AnnualReturn2012	3.09%
2013	rr_AnnualReturn2013	(1.59%)
2014	rr_AnnualReturn2014	1.27%
2015	rr_AnnualReturn2015	1.31%
2016	rr_AnnualReturn2016	(0.81%)
2017	rr_AnnualReturn2017	2.08%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Highest
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Sep. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	7.42%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Lowest
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2010
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(5.86%)
1 Year	rr_AverageAnnualReturnYear01	2.08%
5 Years	rr_AverageAnnualReturnYear05	0.44%
10 Years	rr_AverageAnnualReturnYear10	2.45%
Since Inception	rr_AverageAnnualReturnSinceInception	3.60%
Inception Date	rr_AverageAnnualReturnInceptionDate	Feb. 14, 1994
Ohio Tax Exempt Series | Return After Taxes on Distributions | Ohio Tax Exempt Series
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	2.08%
5 Years	rr_AverageAnnualReturnYear05	0.39%
10 Years	rr_AverageAnnualReturnYear10	2.37%
Since Inception	rr_AverageAnnualReturnSinceInception	3.54%
Inception Date	rr_AverageAnnualReturnInceptionDate	Feb. 14, 1994
Ohio Tax Exempt Series | Return After Taxes on Distributions and Sale of Series Shares | Ohio Tax Exempt Series
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	1.58%
5 Years	rr_AverageAnnualReturnYear05	0.53%
10 Years	rr_AverageAnnualReturnYear10	2.34%
Since Inception	rr_AverageAnnualReturnSinceInception	3.50%
Inception Date	rr_AverageAnnualReturnInceptionDate	Feb. 14, 1994
Ohio Tax Exempt Series | ICE BofA Merrill Lynch 1-12 Year Municipal Bond Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	3.20%
5 Years	rr_AverageAnnualReturnYear05	1.93%
10 Years	rr_AverageAnnualReturnYear10	3.52%
Since Inception	rr_AverageAnnualReturnSinceInception	4.49%
Inception Date	rr_AverageAnnualReturnInceptionDate	Feb. 14, 1994

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratio in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

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Real Estate Series

Real Estate Series

Summary Section

Investment Goal

The Series’ investment objective is to provide high current income and long-term capital appreciation by investing principally in companies in the real estate industry.

Fees and Expenses

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

REAL ESTATE SERIES

Shareholder Fees
(fees paid directly from your investment)

Shareholder Fees - Real Estate Series - USD ($)	CLASS I	CLASS S
Shareholder Fees (fees paid directly from your investment)	none	none

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

Annual Fund Operating Expenses - Real Estate Series		CLASS I	CLASS S
Management Fees		0.75%	0.75%
Distribution (12b-1) Fees		none	none
Other Expenses		0.10%	0.35%
Shareholder Services Fee		none	0.25%
Remainder of Other Expenses		0.10%	0.10%
Total Annual Fund Operating Expenses	[1]	0.85%	1.10%

Example

The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example - Real Estate Series - USD ($)	AFTER 1 YEAR	AFTER 3 YEARS	AFTER 5 YEARS	AFTER 10 YEARS
CLASS I	87	271	471	1,049
CLASS S	112	350	606	1,340

Portfolio Turnover

The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 42% of the average value of its portfolio.

Principal Investment Strategies

The Series will invest, under normal circumstances, at least 80% of its net assets in securities of companies that are principally engaged in the real estate industry. These companies include those directly engaged in the real estate industry as well as in industries serving and/or related to the real estate industry. A company will be considered eligible for investment if, as determined by the Advisor, (i) at least 50% of its assets, revenues or net income is derived from the ownership, leasing, construction, management, development, financing or sale of residential, commercial or industrial real estate or (ii) it has at least 50% of the value of its assets invested in residential, commercial or industrial real estate. Examples of companies in which the Series may invest include those in the following areas: real estate investment trusts (REITs), real estate operating companies (REOCs), real estate developers and brokers, building suppliers, and mortgage lenders.

The Series may invest in common stocks, convertible securities and other equity securities, principally ETFs (defined below), as well as derivative instruments, principally options (as described below). It may invest in securities issued as part of, or a short period after, a company’s initial public offering (IPO).

The Series may invest in common stocks of foreign companies, including companies located in emerging market countries. The Series may also invest in American Depository Receipts (ADRs) and other U.S. dollar denominated securities of foreign issuers. The Series may invest in securities of small-, large-, or mid-size companies.

The Series may also invest in debt securities. The Series’ investment in debt securities is subject to a limit of 20% of the Series’ assets (measured at the time of purchase). The Series will typically invest in investment grade debt securities, those securities rated BBB- or above by S&P or Baa3 or above by Moody’s (or determined to be of equivalent quality by the Advisor); however, the Series may invest up to 5% of its assets (measured at the time of purchase) in below investment grade debt securities (junk bonds), those rated below BBB- by S&P and those rated below Baa3 by Moody’s (or determined to be of equivalent quality by the Advisor). The Series’ investments in debt securities are not subject to any restrictions on maturity or duration.

When the Advisor wishes to sell a security at a specified price, it may seek to generate additional gains for the Series by writing (selling) options on the underlying security.

The Series may purchase shares of exchange-traded funds (ETFs), including to establish a diversified position in a particular market sector or to manage cash flows. The Advisor believes that purchasing ETFs may allow it to manage the Series’ portfolio more efficiently than would otherwise be possible.

The Advisor uses a “bottom-up” strategy, focusing on individual security selection. The Advisor analyzes factors such as the management, financial condition, and market position of individual companies to select companies in the real estate industry that it believes will make attractive long-term investments. The Advisor looks for one or more of the following characteristics:

• Strong strategic profiles (e.g., strong market position, benefits from technology, market share gains in a mature market and high barriers to entry).

• Companies well-positioned to benefit from an anticipated upturn in an industry sub-sector due to sharply reduced competition and improving demand.

• Companies trading at very low valuations relative to fundamental or break-up value.

The Advisor will consider selling a security if:

• it no longer fits the Series' investment strategies or valuation discipline;

• it has reached the Advisor's target sell price; or

• a more attractive investment opportunity is identified.

Principal Risks of Investing in the Series

As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series.

Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect.

Market risk — Because the Series invests in stocks, the value of your investment will fluctuate in response to stock market movements. This means that you could lose money on your investment in the Series or the Series could underperform if any of the following occurs:

• U.S. and/or foreign stock or bond markets decline.

• An adverse event, such as an unfavorable earnings report, depresses the value of one or more of the Series’ portfolio holdings.

Real estate investment risk — The Series’ concentration in securities of issuers in the real estate industry, including its investments in REITs and REOCs (together, real estate companies, or RECs), may subject it to additional risks even though the Series does not invest directly in real estate. These risks include, but are not limited to, the following: fluctuations in the value of real estate properties and interest rates, defaults by borrowers or tenants, extended vacancies and declining rents, a lack of ability to obtain mortgage financing or other limits to accessing the credit or capital markets, increased competition and overbuilding and increases in real estate or operating taxes. Any geographic concentration of the Series’ real estate related investments could result in the Series being subject to the above risks to a greater degree.

The value of a REIT or REOC can depend on its legal structure and cash flow generation. While RECs raise equity and debt capital through the private and public markets, RECs are neither mutual funds, nor hedge funds, nor private equity funds. Much as other operating companies, RECs incur operating expenses necessary to manage and maintain properties. Investing in the Series will result in absorbing duplicate levels of fees for the Series’ investments in RECs. In addition, REITs are subject to certain federal tax laws and if the REIT fails to qualify for such tax treatment, significant adverse consequences could occur for any such REIT investment. For example, a qualified REIT may be adversely affected by its failure to qualify for tax-free pass through of income.

Large-cap risk — Large-cap stocks tend to go in and out of favor based on market and economic conditions. During a period when large-cap stocks fall behind other types of investments — small-cap stocks, for instance — the Series' performance could be reduced to the extent its portfolio is holding large-cap stocks.

Small- and mid-cap risk — The Series may also have special risks due to its investments in stocks of small- and mid-size companies. These risks include the following:

• The stocks of small- and mid-size companies may be subject to more abrupt or erratic market movements than the stocks of larger companies.

• The stocks of small- and mid-size companies may be subject to liquidity risk because such stocks may have lower trading volume and be less marketable than the stocks of larger companies. Liquidity risk is further described below.

• Small- and mid-size companies may have limited product lines, markets, or financial resources, and they may depend on a small management group. As a result, they fail more often than larger companies.

Foreign securities risk — Because the Series may invest in securities of foreign issuers, the Series is subject to additional risks. These include risks of adverse changes in foreign economic, political, regulatory and other conditions. The prices of foreign common stocks may, at times, move in a different direction than the prices of U.S. stocks. The Series’ investments may be denominated in the currencies of the countries in which they are located; therefore, the value of the Series may be affected by changes in exchange rates between those foreign currencies and the U.S. dollar.

Emerging markets risk — The Series may also have special risks due to its investments in emerging market countries. In addition to the risks discussed above relating to investments in foreign companies located in developed countries, the Series’ investments in emerging market countries are subject to the following risks:

• Emerging markets may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries.

• Emerging market countries often have less uniformity in accounting and reporting requirements and unreliable securities valuation.

• It is sometimes difficult to obtain and enforce court judgments in emerging market countries and there is often a greater potential for nationalization and/or expropriation of assets by the government of an emerging market country.

• There will tend to be an increased risk of price volatility associated with the Series’ investments in emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

Options risk – Options, like all derivatives, can be extremely sensitive to changes in the market value of the underlying investment, and changes in the value of an option contract may not correlate perfectly with the underlying investment. Investments in options are also subject to liquidity risk, which is described below.

Risks related to ETFs — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio of securities. The Series will also bear its proportionate share of the expenses of the purchased ETF in addition to its own expenses.

Risk of initial public offerings — The Series may purchase shares issued as part of, or a short period after, a company’s initial public offering (IPO), and may at times dispose of those shares shortly after their acquisition. The Series’ purchase of shares issued in IPOs exposes it to the risks associated with companies that have little operating history as public companies, as well as to the risks inherent in those sectors of the market where these new issuers operate. The market for IPO issuers has been volatile, and share prices of newly-public companies have fluctuated significantly over short periods of time.

Fixed income risk — Because the Series may invest in fixed income securities, you could lose money on your investment in the Series or the Series could underperform if any of the following occurs:

• Interest rates go up, which will make bond prices go down and reduce the value of the bonds held in the Series’ portfolio.

• The issuer of a fixed income security owned by the Series defaults on its obligation to pay principal and/or interest or has its credit rating downgraded.

Current market conditions may pose heightened risks for the Series. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the Series. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, the Series' value may fluctuate and/or the Series may experience increased redemptions from shareholders, which may impact the Series' liquidity or force the Series to sell securities into a declining or illiquid market.

High-yield securities risk — The Series is subject to additional risks due to its ability to invest in high-yield securities (junk bonds):

• High-yield securities may underperform other sectors of the bond market, or the bond market as a whole.

• The performance of high-yield securities tends to be more volatile than that of other sectors of the bond market.

• Given the total size of the high-yield securities market, high-yield securities can be less liquid than investment grade securities.

• The Series’ investments in high-yield securities will subject it to a substantial degree of credit risk because the prospect for repayment of principal and interest of many of these bonds is speculative.

Convertible securities risk — The Series’ investments in convertible securities are subject to interest rate risk and credit risk, similar to fixed income securities. In addition, they are also subject to the risk that the price of the underlying common stock will go down, which may cause a proportionate (or disproportionate) decline in the price of the convertible security.

Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series' management or performance.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders.

The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.

Summary of Past Performance

The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Class S shares of the Series for each full calendar year since its inception. The total return table shows how the average annual total returns for the Class S and Class I shares of the Series for different periods compare to those of a broad-based securities index. The Series’ Class I shares commenced operations on August 1, 2012, and all performance below for the periods prior to that date reflect the performance and average annual total returns of the Series’ Class S shares. Because Class I shares of the Series invest in the same portfolio of securities, returns for the Class I shares will be substantially similar to those of the Class S shares. Performance will be different only to the extent that the Class I shares have lower expenses. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.

Calendar Years Ended December 31

Quarterly Returns
Highest (quarter ended 12/31/11): 15.15%
Lowest (quarter ended 09/30/11): (15.29)%

AVERAGE ANNUAL TOTAL RETURNS
FOR PERIODS ENDED DECEMBER 31, 2017

Average Annual Total Returns - Real Estate Series	1 Year	5 Years	Since Inception	Inception Date
Class S Shares	8.66%	9.94%	13.13%	Nov. 10, 2009
Class S Shares | Return After Taxes on Distributions	7.01%	7.29%	10.90%	Nov. 10, 2009
Class S Shares | Return After Taxes on Distributions and Sale of Series Shares	5.67%	7.12%	10.11%	Nov. 10, 2009
Class I Shares	8.85%	10.21%	13.30%	Nov. 10, 2009
MSCI US REIT Index (reflects no deduction for fees, expenses, or taxes)	3.74%	7.99%	12.48%	Nov. 10, 2009

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The after-tax figures are shown for one share class only, and would be different for the other share class. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	MANNING & NAPIER FUND, INC.
Prospectus Date	rr_ProspectusDate	May 01, 2018
Real Estate Series
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Real Estate Series Summary Section
Objective [Heading]	rr_ObjectiveHeading	Investment Goal
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Series’ investment objective is to provide high current income and long-term capital appreciation by investing principally in companies in the real estate industry.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Series.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	REAL ESTATE SERIES Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund 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 Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 42% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	42.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ 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 Series will invest, under normal circumstances, at least 80% of its net assets in securities of companies that are principally engaged in the real estate industry. These companies include those directly engaged in the real estate industry as well as in industries serving and/or related to the real estate industry. A company will be considered eligible for investment if, as determined by the Advisor, (i) at least 50% of its assets, revenues or net income is derived from the ownership, leasing, construction, management, development, financing or sale of residential, commercial or industrial real estate or (ii) it has at least 50% of the value of its assets invested in residential, commercial or industrial real estate. Examples of companies in which the Series may invest include those in the following areas: real estate investment trusts (REITs), real estate operating companies (REOCs), real estate developers and brokers, building suppliers, and mortgage lenders. The Series may invest in common stocks, convertible securities and other equity securities, principally ETFs (defined below), as well as derivative instruments, principally options (as described below). It may invest in securities issued as part of, or a short period after, a company’s initial public offering (IPO). The Series may invest in common stocks of foreign companies, including companies located in emerging market countries. The Series may also invest in American Depository Receipts (ADRs) and other U.S. dollar denominated securities of foreign issuers. The Series may invest in securities of small-, large-, or mid-size companies. The Series may also invest in debt securities. The Series’ investment in debt securities is subject to a limit of 20% of the Series’ assets (measured at the time of purchase). The Series will typically invest in investment grade debt securities, those securities rated BBB- or above by S&P or Baa3 or above by Moody’s (or determined to be of equivalent quality by the Advisor); however, the Series may invest up to 5% of its assets (measured at the time of purchase) in below investment grade debt securities (junk bonds), those rated below BBB- by S&P and those rated below Baa3 by Moody’s (or determined to be of equivalent quality by the Advisor). The Series’ investments in debt securities are not subject to any restrictions on maturity or duration. When the Advisor wishes to sell a security at a specified price, it may seek to generate additional gains for the Series by writing (selling) options on the underlying security. The Series may purchase shares of exchange-traded funds (ETFs), including to establish a diversified position in a particular market sector or to manage cash flows. The Advisor believes that purchasing ETFs may allow it to manage the Series’ portfolio more efficiently than would otherwise be possible. The Advisor uses a “bottom-up” strategy, focusing on individual security selection. The Advisor analyzes factors such as the management, financial condition, and market position of individual companies to select companies in the real estate industry that it believes will make attractive long-term investments. The Advisor looks for one or more of the following characteristics: Strong strategic profiles (e.g., strong market position, benefits from technology, market share gains in a mature market and high barriers to entry). Companies well-positioned to benefit from an anticipated upturn in an industry sub-sector due to sharply reduced competition and improving demand. Companies trading at very low valuations relative to fundamental or break-up value. The Advisor will consider selling a security if: it no longer fits the Series' investment strategies or valuation discipline; it has reached the Advisor's target sell price; or a more attractive investment opportunity is identified.
Strategy Portfolio Concentration [Text]	rr_StrategyPortfolioConcentration	The Series will invest, under normal circumstances, at least 80% of its net assets in securities of companies that are principally engaged in the real estate industry.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Series
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series. Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect. Market risk — Because the Series invests in stocks, the value of your investment will fluctuate in response to stock market movements. This means that you could lose money on your investment in the Series or the Series could underperform if any of the following occurs: U.S. and/or foreign stock or bond markets decline. An adverse event, such as an unfavorable earnings report, depresses the value of one or more of the Series’ portfolio holdings. Real estate investment risk — The Series’ concentration in securities of issuers in the real estate industry, including its investments in REITs and REOCs (together, real estate companies, or RECs), may subject it to additional risks even though the Series does not invest directly in real estate. These risks include, but are not limited to, the following: fluctuations in the value of real estate properties and interest rates, defaults by borrowers or tenants, extended vacancies and declining rents, a lack of ability to obtain mortgage financing or other limits to accessing the credit or capital markets, increased competition and overbuilding and increases in real estate or operating taxes. Any geographic concentration of the Series’ real estate related investments could result in the Series being subject to the above risks to a greater degree. The value of a REIT or REOC can depend on its legal structure and cash flow generation. While RECs raise equity and debt capital through the private and public markets, RECs are neither mutual funds, nor hedge funds, nor private equity funds. Much as other operating companies, RECs incur operating expenses necessary to manage and maintain properties. Investing in the Series will result in absorbing duplicate levels of fees for the Series’ investments in RECs. In addition, REITs are subject to certain federal tax laws and if the REIT fails to qualify for such tax treatment, significant adverse consequences could occur for any such REIT investment. For example, a qualified REIT may be adversely affected by its failure to qualify for tax-free pass through of income. Large-cap risk — Large-cap stocks tend to go in and out of favor based on market and economic conditions. During a period when large-cap stocks fall behind other types of investments — small-cap stocks, for instance — the Series' performance could be reduced to the extent its portfolio is holding large-cap stocks. Small- and mid-cap risk — The Series may also have special risks due to its investments in stocks of small- and mid-size companies. These risks include the following: The stocks of small- and mid-size companies may be subject to more abrupt or erratic market movements than the stocks of larger companies. The stocks of small- and mid-size companies may be subject to liquidity risk because such stocks may have lower trading volume and be less marketable than the stocks of larger companies. Liquidity risk is further described below. Small- and mid-size companies may have limited product lines, markets, or financial resources, and they may depend on a small management group. As a result, they fail more often than larger companies. Foreign securities risk — Because the Series may invest in securities of foreign issuers, the Series is subject to additional risks. These include risks of adverse changes in foreign economic, political, regulatory and other conditions. The prices of foreign common stocks may, at times, move in a different direction than the prices of U.S. stocks. The Series’ investments may be denominated in the currencies of the countries in which they are located; therefore, the value of the Series may be affected by changes in exchange rates between those foreign currencies and the U.S. dollar. Emerging markets risk — The Series may also have special risks due to its investments in emerging market countries. In addition to the risks discussed above relating to investments in foreign companies located in developed countries, the Series’ investments in emerging market countries are subject to the following risks: Emerging markets may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries. Emerging market countries often have less uniformity in accounting and reporting requirements and unreliable securities valuation. It is sometimes difficult to obtain and enforce court judgments in emerging market countries and there is often a greater potential for nationalization and/or expropriation of assets by the government of an emerging market country. There will tend to be an increased risk of price volatility associated with the Series’ investments in emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar. Options risk – Options, like all derivatives, can be extremely sensitive to changes in the market value of the underlying investment, and changes in the value of an option contract may not correlate perfectly with the underlying investment. Investments in options are also subject to liquidity risk, which is described below. Risks related to ETFs — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio of securities. The Series will also bear its proportionate share of the expenses of the purchased ETF in addition to its own expenses. Risk of initial public offerings — The Series may purchase shares issued as part of, or a short period after, a company’s initial public offering (IPO), and may at times dispose of those shares shortly after their acquisition. The Series’ purchase of shares issued in IPOs exposes it to the risks associated with companies that have little operating history as public companies, as well as to the risks inherent in those sectors of the market where these new issuers operate. The market for IPO issuers has been volatile, and share prices of newly-public companies have fluctuated significantly over short periods of time. Fixed income risk — Because the Series may invest in fixed income securities, you could lose money on your investment in the Series or the Series could underperform if any of the following occurs: Interest rates go up, which will make bond prices go down and reduce the value of the bonds held in the Series’ portfolio. The issuer of a fixed income security owned by the Series defaults on its obligation to pay principal and/or interest or has its credit rating downgraded. Current market conditions may pose heightened risks for the Series. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the Series. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, the Series' value may fluctuate and/or the Series may experience increased redemptions from shareholders, which may impact the Series' liquidity or force the Series to sell securities into a declining or illiquid market. High-yield securities risk — The Series is subject to additional risks due to its ability to invest in high-yield securities (junk bonds): High-yield securities may underperform other sectors of the bond market, or the bond market as a whole. The performance of high-yield securities tends to be more volatile than that of other sectors of the bond market. Given the total size of the high-yield securities market, high-yield securities can be less liquid than investment grade securities. The Series’ investments in high-yield securities will subject it to a substantial degree of credit risk because the prospect for repayment of principal and interest of many of these bonds is speculative. Convertible securities risk — The Series’ investments in convertible securities are subject to interest rate risk and credit risk, similar to fixed income securities. In addition, they are also subject to the risk that the price of the underlying common stock will go down, which may cause a proportionate (or disproportionate) decline in the price of the convertible security. Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series' management or performance. Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders. The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the Series.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Summary of Past Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Class S shares of the Series for each full calendar year since its inception. The total return table shows how the average annual total returns for the Class S and Class I shares of the Series for different periods compare to those of a broad-based securities index. The Series’ Class I shares commenced operations on August 1, 2012, and all performance below for the periods prior to that date reflect the performance and average annual total returns of the Series’ Class S shares. Because Class I shares of the Series invest in the same portfolio of securities, returns for the Class I shares will be substantially similar to those of the Class S shares. Performance will be different only to the extent that the Class I shares have lower expenses. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Class S shares of the Series for each full calendar year since its inception. The total return table shows how the average annual total returns for the Class S and Class I shares of the Series for different periods compare to those of a broad-based securities index.
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.manning-napier.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Calendar Years Ended December 31
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Quarterly Returns Highest (quarter ended 12/31/11): 15.15% Lowest (quarter ended 09/30/11): (15.29)%
Performance Table Heading	rr_PerformanceTableHeading	AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2017
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	After-tax returns are not relevant to investors who hold their Series 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	The after-tax figures are shown for one share class only, and would be different for the other share class.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The after-tax figures are shown for one share class only, and would be different for the other share class. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Real Estate Series | CLASS I
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees (fees paid directly from your investment)	rr_ShareholderFeeOther	none
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Shareholder Services Fee	rr_Component1OtherExpensesOverAssets	none
Remainder of Other Expenses	rr_Component2OtherExpensesOverAssets	0.10%
Other Expenses	rr_OtherExpensesOverAssets	0.10%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.85%	[1]
AFTER 1 YEAR	rr_ExpenseExampleYear01	$ 87
AFTER 3 YEARS	rr_ExpenseExampleYear03	271
AFTER 5 YEARS	rr_ExpenseExampleYear05	471
AFTER 10 YEARS	rr_ExpenseExampleYear10	$ 1,049
1 Year	rr_AverageAnnualReturnYear01	8.85%
5 Years	rr_AverageAnnualReturnYear05	10.21%
Since Inception	rr_AverageAnnualReturnSinceInception	13.30%
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 10, 2009
Real Estate Series | CLASS S
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees (fees paid directly from your investment)	rr_ShareholderFeeOther	none
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Shareholder Services Fee	rr_Component1OtherExpensesOverAssets	0.25%
Remainder of Other Expenses	rr_Component2OtherExpensesOverAssets	0.10%
Other Expenses	rr_OtherExpensesOverAssets	0.35%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.10%	[1]
AFTER 1 YEAR	rr_ExpenseExampleYear01	$ 112
AFTER 3 YEARS	rr_ExpenseExampleYear03	350
AFTER 5 YEARS	rr_ExpenseExampleYear05	606
AFTER 10 YEARS	rr_ExpenseExampleYear10	$ 1,340
2010	rr_AnnualReturn2010	24.40%
2011	rr_AnnualReturn2011	5.29%
2012	rr_AnnualReturn2012	21.93%
2013	rr_AnnualReturn2013	2.67%
2014	rr_AnnualReturn2014	28.14%
2015	rr_AnnualReturn2015	4.14%
2016	rr_AnnualReturn2016	7.91%
2017	rr_AnnualReturn2017	8.66%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Highest
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Dec. 31, 2011
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	15.15%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Lowest
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2011
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(15.29%)
1 Year	rr_AverageAnnualReturnYear01	8.66%
5 Years	rr_AverageAnnualReturnYear05	9.94%
Since Inception	rr_AverageAnnualReturnSinceInception	13.13%
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 10, 2009
Real Estate Series | Return After Taxes on Distributions | CLASS S
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	7.01%
5 Years	rr_AverageAnnualReturnYear05	7.29%
Since Inception	rr_AverageAnnualReturnSinceInception	10.90%
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 10, 2009
Real Estate Series | Return After Taxes on Distributions and Sale of Series Shares | CLASS S
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	5.67%
5 Years	rr_AverageAnnualReturnYear05	7.12%
Since Inception	rr_AverageAnnualReturnSinceInception	10.11%
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 10, 2009
Real Estate Series | MSCI US REIT Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	3.74%
5 Years	rr_AverageAnnualReturnYear05	7.99%
Since Inception	rr_AverageAnnualReturnSinceInception	12.48%
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 10, 2009

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

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Unconstrained Bond Series

Unconstrained Bond Series

Summary Section

Investment Goal

The Series’ primary investment objective is to provide long-term total return,

and its secondary objective is to provide preservation of capital.

Fees and Expenses

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

UNCONSTRAINED BOND SERIES

Shareholder Fees (paid
directly from your investment)

Shareholder Fees - Unconstrained Bond Series - USD ($)	CLASS I	CLASS S
Shareholder Fees (paid directly from your investment)	none	none

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

Annual Fund Operating Expenses - Unconstrained Bond Series		CLASS I	CLASS S
Management Fees		0.45%	0.45%
Distribution and Service (12b-1) Fees		none	none
Other Expenses		0.05%	0.30%
Shareholder Services Fee		none	0.25%
Remainder of Other Expenses		0.05%	0.05%
Total Annual Fund Operating Expenses	[1]	0.50%	0.75%

Example

The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example - Unconstrained Bond Series - USD ($)	AFTER 1 YEAR	AFTER 3 YEARS	AFTER 5 YEARS	AFTER 10 YEARS
CLASS I	51	160	280	628
CLASS S	77	240	417	930

Portfolio Turnover

The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 62% of the average value of its portfolio.

Principal Investment Strategies

The Series will invest, under normal circumstances, at least 80% of its net assets in bonds and other financial instruments, principally derivative instruments and exchange-traded funds (ETFs), with economic characteristics similar to bonds. For purposes of this policy, bonds may include fixed income securities issued by U.S. and foreign corporations and governments, inflation protected securities, pass-through securities, and mortgage dollar rolls, which are transactions in which the Series sells a mortgage-backed security and simultaneously contracts to purchase similar securities on a specified future date at a predetermined price. The corporate bonds may be issued by domestic corporations, foreign entities (e.g., yankee bonds), and/or supranational entities, such as the World Bank. Pass-through securities are generally issued by domestic entities (such as GNMA, FNMA, and FHLMC) and entitle the holders to a pro rata share of the cash flows generated by the instruments underlying the security (mortgages, credit card receivables, car loans, etc.).

The Series may invest up to 50% of its assets in below investment grade securities (also referred to as “high yield bonds” or “junk bonds”) and may invest up to 50% of its assets in non-U.S. dollar denominated securities, including securities issued by companies located in emerging markets. The Series may invest portions of its assets in bank loans, which are, generally, non-investment grade floating rate investments, and preferred stock.

The Series may invest in interest rate futures (and options thereon) and interest rate swaps to manage its interest rate exposure, and may invest in credit default swaps and total return swaps to manage its exposure to certain instruments or markets. The Series may, but is not required to, invest in forward foreign currency contracts to hedge currency risks associated with the purchase of individual securities denominated in a foreign currency.

The Series may purchase shares of ETFs, including to establish a diversified position in a particular market sector or to manage cash flows. The Advisor believes that purchasing ETFs may allow it to manage the Series’ portfolio more efficiently than would otherwise be possible.

The Series employs an absolute return investment approach, which means that it seeks to achieve a positive total return in diverse market environments over time. Accordingly, the Series invests across the fixed income universe, and it is not constrained by any particular fixed income asset classes or benchmarks.

Bond Selection Process — When investing in corporate and pass-through securities, the Advisor attempts to identify sectors, as well as individual securities within those sectors, that offer yields and credit/prepayment spreads sufficient to compensate the Series for the risks specific to a given sector or security. Credit spreads are a measure of the difference between corporate bonds’ yields to maturity and those of U.S. Treasury securities with similar maturities; this difference compensates investors for the credit risk inherent in corporate bonds. Prepayment spreads quantify the additional yield paid by mortgage-backed bonds relative to U.S. Treasury securities to compensate investors for the risk that mortgage-backed securities’ prepayments will vary over time.

In analyzing the relative attractiveness of sectors and/or individual securities, the Advisor considers:

• The relevant economic conditions and sector trends.

• The interest rate sensitivities of the particular sectors and securities.

• The yield differentials across sectors, credit qualities, pass-through security types, and maturities.

• “Bottom-up” factors such as issuer-specific credit metrics for corporate bonds and coupon, prepayment, and convexity components (which reflect changing interest rate sensitivities) of pass-through securities.

Maturity and Portfolio Duration — The Series is not subject to any maturity or duration restrictions but the average dollar-weighted portfolio duration of the Series will normally vary from negative 3 years to positive 8 years depending on the Advisor’s outlook for yields. For example, the Advisor may invest in positive duration fixed income securities when it expects yields to fall in order to realize gains for the Series. Likewise, the Advisor may invest in negative duration fixed income securities when it expects yields to rise. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security’s price to changes in yields. The prices of fixed income securities with shorter positive or negative durations generally will be less affected by changes in yields than the prices of fixed income securities with longer positive or negative durations. For example, a positive 10 year duration means the fixed income security will decrease in value by 10% if yields rise 1% and increase in value by 10% if yields fall 1%. Conversely, a negative 10 year duration means the fixed income security will increase in value by 10% if yields rise 1% and decrease in value by 10% if yields fall 1%.

Credit Quality — The Series may invest in investment grade securities, those securities rated BBB- or above by S&P or Baa3 or above by Moody’s (or determined to be of equivalent quality by the Advisor) and may invest up to 50% of its assets in below investment grade securities, those rated below BBB- by S&P and those rated below Baa3 by Moody’s (or determined to be of equivalent quality by the Advisor). The Series may invest in securities with any rating, including those that have defaulted, are not rated, or have had their rating withdrawn.

Securities issued by governments and supranational entities may be sold to adjust the Series' duration and/or yield curve positioning.

Other securities may be sold for one or more of the following reasons:

• they no longer meet the selection criteria under which they were purchased;

• their relative value has declined (the spread has tightened such that they are no longer considered attractively priced);

• a more attractive investment opportunity is identified.

Securities may also be sold based on the Advisor's macroeconomic assessment of countries and currencies.

There are no prescribed limits on the sector allocation of the Series' investments and, from time to time, the Series may focus its investments in one or more sectors.

Principal Risks of Investing in the Series

As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series.

Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect.

Market risk — Because the Series invests in bonds, the value of your investment will fluctuate in response to changes in interest rates, credit spreads, and prepayment spreads, even though such changes will not affect the interest income derived from portfolio securities. You could lose money on your investment in the Series or the Series could underperform if any of the following occurs:

• U.S. and/or foreign bond markets decline.

• The issuer of a corporate bond owned by the Series defaults on its obligation to pay principal and/or interest or has its credit rating downgraded; this risk is greater for junk bonds and other lower quality bonds.

• Interest rates rise, credit spreads widen, and/or prepayment spreads widen. These events alone or in combination can cause bond prices to fall and reduce the value of the Series’ portfolio. Longer-term bonds have greater sensitivity to, and will therefore experience greater fluctuations in response to, interest rate changes than shorter-term bonds.

• Market volatility and/or prepayment spreads change to such a degree that prepayment uncertainty/risks are reassessed; the greater the uncertainty/risk, the wider the requisite prepayment spread.

Current market conditions may pose heightened risks for the Series. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the Series. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, the Series' value may fluctuate and/or the Series may experience increased redemptions from shareholders, which may impact the Series’ liquidity or force the Series to sell securities into a declining or illiquid market.

Risk of mortgage dollar rolls — The Series' mortgage dollar rolls could lose money if the price of the mortgage-backed securities sold falls below the agreed upon repurchase price, or if the counterparty is unable to honor the agreement.

High-yield securities risk — The Series is subject to additional risks due its ability to invest in high-yield securities (junk bonds):

• High-yield securities may underperform other sectors of the bond market, or the market as a whole.

• The performance of high-yield securities tends to be more volatile than that of other sectors of the bond market.

• Given the total size of the high-yield securities market, high-yield securities can be less liquid than investment grade securities.

• The Series’ investments in high-yield securities will subject it to a substantial degree of credit risk because the prospect for repayment of principal and interest of many of these bonds is speculative.

Bank loan risk — Investments in bank loans expose the Series to the credit risk of both the financial institution and the underlying borrower. The Series may also have difficulty valuing or disposing of bank loans because, in certain cases, the market for such instruments is not highly liquid.

Preferred stock risk — Preferred stocks are sensitive to interest rate changes, and are also subject to equity market risk, which is the risk that stock prices will fluctuate and can decline and reduce the value of a Series’ investment. The rights of preferred stocks on the distribution of a corporation’s assets in the event of a liquidation are generally subordinate to the rights associated with a corporation’s debt securities. Preferred stock may also be subject to prepayment risk similar to fixed income securities.

Foreign securities risk — Because the Series may invest in securities of foreign issuers, the Series is subject to additional risks. These include risks of adverse changes in foreign economic, political, regulatory and other conditions. The prices of foreign fixed income securities may, at times, move in a different direction than the prices of fixed income securities issued in the United States. The Series’ investments may be denominated in the currencies of the countries in which they are located; therefore, the value of the Series may be affected by changes in exchange rates between those foreign currencies and the U.S. dollar. The Advisor's attempt to manage the currency risk described above may not accurately predict movements in currency exchange rates, which could cause the Series to sustain losses.

Emerging markets risk — The Series may also have special risks due to its investments in emerging market countries. In addition to the risks discussed above relating to investments in foreign companies located in developed countries, the Series’ investments in emerging market countries are subject to the following risks:

• Emerging markets may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries.

• Emerging market countries often have less uniformity in accounting and reporting requirements and unreliable securities valuation.

• It is sometimes difficult to obtain and enforce court judgments in emerging market countries and there is often a greater potential for nationalization and/or expropriation of assets by the government of an emerging market country.

• There will tend to be an increased risk of price volatility associated with the Series’ investments in emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

Derivatives risk — The Series is subject to the following risks due to its ability to invest in options, futures, forwards and swaps:

• Derivatives can be extremely sensitive to changes in the market value of the underlying investment, and changes in the value of a derivative contract may not correlate perfectly with the underlying investment.

• The Series may not be able to receive amounts payable to it under its derivatives contracts as quickly as it may be able to sell or otherwise obtain payments from other investments, so the Series’ investments in such contracts may not be as liquid as the Series’ other investments.

• The Series’ use of forwards and swaps is also subject to the risk that the counterparty to the contract will default or otherwise become unable to honor its obligation to the Series.

Mortgage- and asset-backed securities risks — The Series' investments in mortgage-backed and asset-backed securities may subject it to the following additional risks:

• Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations.

• Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities, and asset-backed securities may not have the benefit of any security interest in the related assets.

Risks related to ETFs — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio of securities. The Series will also bear its proportionate share of the expenses of the purchased ETF in addition to its own expenses.

Inflation protected security risk — The value of inflation protected fixed income securities, including Treasury Inflation Protected Securities (TIPS), generally will fluctuate in response to changes in "real" interest rates, generally decreasing when real interest rates rise and increasing when real interest rates fall. Real interest rates represent nominal (or stated) interest rates reduced by the expected impact of inflation. In addition, interest payments on inflation-indexed securities will generally vary up or down along with the rate of inflation.

Sector focus risk — Because the Series' investments may, from time to time, be more heavily invested in a particular sector or sectors, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those sectors. As a result, the Series' share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of sectors.

Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series' management or performance.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders.

The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.

Summary of Past Performance

The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Class S shares of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Class S shares and Class I shares of the Series for different periods compare to those of two broad-based securities indices. The Series’ Class I shares commenced operations on August 1, 2013, and all performance below for the periods prior to that date reflect the performance and average annual total returns of the Series’ Class S shares. Because the Class I shares of the Series invest in the same portfolio of securities, returns for the Class I shares will be substantially similar to those of the Class S shares. Performance will be different only to the extent that the Class I shares have lower expenses. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.

Calendar Years Ended December 31

Quarterly Returns
Highest (quarter ended 09/30/09): 7.48%
Lowest (quarter ended 09/30/08): (3.42)%

AVERAGE ANNUAL TOTAL RETURNS
FOR PERIODS ENDED DECEMBER 31, 2017

Average Annual Total Returns - Unconstrained Bond Series	1 Year	5 Years	10 Years	Since Inception	[1]	Inception Date
Class S Shares	3.19%	1.89%	5.01%	4.73%		Apr. 21, 2005
Class S Shares | Return After Taxes on Distributions	2.18%	0.55%	3.41%	3.20%		Apr. 21, 2005
Class S Shares | Return After Taxes on Distributions and Sale of Series Shares	1.80%	0.91%	3.35%	3.15%		Apr. 21, 2005
Class I Shares	3.52%	2.10%	5.12%	4.81%		Apr. 21, 2005
Citigroup 3-Month T-Bill Index (reflect no deduction for fees, expenses, or taxes)	0.84%	0.24%	0.34%	1.18%		Apr. 30, 2005
Bloomberg Barclays U.S. Aggregate Bond Index (reflect no deduction for fees, expenses, or taxes)	3.54%	2.10%	4.01%	4.20%		Apr. 21, 2005

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The after-tax figures are shown for one share class only, and would be different for the other share class. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

[1] Performance numbers for the Series and the Bloomberg Barclays U.S. Aggregate Bond Index are calculated from April 21, 2005, the inception date of the Series' Class S shares. Performance numbers for the Citigroup 3-Month T-Bill Index are calculated from April 30, 2005.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	MANNING & NAPIER FUND, INC.
Prospectus Date	rr_ProspectusDate	May 01, 2018
Unconstrained Bond Series
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Unconstrained Bond Series Summary Section
Objective [Heading]	rr_ObjectiveHeading	Investment Goal
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Series’ primary investment objective is to provide long-term total return,
Objective, Secondary [Text Block]	rr_ObjectiveSecondaryTextBlock	and its secondary objective is to provide preservation of capital.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Series.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	UNCONSTRAINED BOND SERIES Shareholder Fees (paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund 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 Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 62% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	62.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ 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 Series will invest, under normal circumstances, at least 80% of its net assets in bonds and other financial instruments, principally derivative instruments and exchange-traded funds (ETFs), with economic characteristics similar to bonds. For purposes of this policy, bonds may include fixed income securities issued by U.S. and foreign corporations and governments, inflation protected securities, pass-through securities, and mortgage dollar rolls, which are transactions in which the Series sells a mortgage-backed security and simultaneously contracts to purchase similar securities on a specified future date at a predetermined price. The corporate bonds may be issued by domestic corporations, foreign entities (e.g., yankee bonds), and/or supranational entities, such as the World Bank. Pass-through securities are generally issued by domestic entities (such as GNMA, FNMA, and FHLMC) and entitle the holders to a pro rata share of the cash flows generated by the instruments underlying the security (mortgages, credit card receivables, car loans, etc.). The Series may invest up to 50% of its assets in below investment grade securities (also referred to as “high yield bonds” or “junk bonds”) and may invest up to 50% of its assets in non-U.S. dollar denominated securities, including securities issued by companies located in emerging markets. The Series may invest portions of its assets in bank loans, which are, generally, non-investment grade floating rate investments, and preferred stock. The Series may invest in interest rate futures (and options thereon) and interest rate swaps to manage its interest rate exposure, and may invest in credit default swaps and total return swaps to manage its exposure to certain instruments or markets. The Series may, but is not required to, invest in forward foreign currency contracts to hedge currency risks associated with the purchase of individual securities denominated in a foreign currency. The Series may purchase shares of ETFs, including to establish a diversified position in a particular market sector or to manage cash flows. The Advisor believes that purchasing ETFs may allow it to manage the Series’ portfolio more efficiently than would otherwise be possible. The Series employs an absolute return investment approach, which means that it seeks to achieve a positive total return in diverse market environments over time. Accordingly, the Series invests across the fixed income universe, and it is not constrained by any particular fixed income asset classes or benchmarks. Bond Selection Process — When investing in corporate and pass-through securities, the Advisor attempts to identify sectors, as well as individual securities within those sectors, that offer yields and credit/prepayment spreads sufficient to compensate the Series for the risks specific to a given sector or security. Credit spreads are a measure of the difference between corporate bonds’ yields to maturity and those of U.S. Treasury securities with similar maturities; this difference compensates investors for the credit risk inherent in corporate bonds. Prepayment spreads quantify the additional yield paid by mortgage-backed bonds relative to U.S. Treasury securities to compensate investors for the risk that mortgage-backed securities’ prepayments will vary over time. In analyzing the relative attractiveness of sectors and/or individual securities, the Advisor considers: The relevant economic conditions and sector trends. The interest rate sensitivities of the particular sectors and securities. The yield differentials across sectors, credit qualities, pass-through security types, and maturities. “Bottom-up” factors such as issuer-specific credit metrics for corporate bonds and coupon, prepayment, and convexity components (which reflect changing interest rate sensitivities) of pass-through securities. Maturity and Portfolio Duration — The Series is not subject to any maturity or duration restrictions but the average dollar-weighted portfolio duration of the Series will normally vary from negative 3 years to positive 8 years depending on the Advisor’s outlook for yields. For example, the Advisor may invest in positive duration fixed income securities when it expects yields to fall in order to realize gains for the Series. Likewise, the Advisor may invest in negative duration fixed income securities when it expects yields to rise. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security’s price to changes in yields. The prices of fixed income securities with shorter positive or negative durations generally will be less affected by changes in yields than the prices of fixed income securities with longer positive or negative durations. For example, a positive 10 year duration means the fixed income security will decrease in value by 10% if yields rise 1% and increase in value by 10% if yields fall 1%. Conversely, a negative 10 year duration means the fixed income security will increase in value by 10% if yields rise 1% and decrease in value by 10% if yields fall 1%. Credit Quality — The Series may invest in investment grade securities, those securities rated BBB- or above by S&P or Baa3 or above by Moody’s (or determined to be of equivalent quality by the Advisor) and may invest up to 50% of its assets in below investment grade securities, those rated below BBB- by S&P and those rated below Baa3 by Moody’s (or determined to be of equivalent quality by the Advisor). The Series may invest in securities with any rating, including those that have defaulted, are not rated, or have had their rating withdrawn. Securities issued by governments and supranational entities may be sold to adjust the Series' duration and/or yield curve positioning. Other securities may be sold for one or more of the following reasons: they no longer meet the selection criteria under which they were purchased; their relative value has declined (the spread has tightened such that they are no longer considered attractively priced); a more attractive investment opportunity is identified. Securities may also be sold based on the Advisor's macroeconomic assessment of countries and currencies. There are no prescribed limits on the sector allocation of the Series' investments and, from time to time, the Series may focus its investments in one or more sectors.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Series
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series. Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect. Market risk — Because the Series invests in bonds, the value of your investment will fluctuate in response to changes in interest rates, credit spreads, and prepayment spreads, even though such changes will not affect the interest income derived from portfolio securities. You could lose money on your investment in the Series or the Series could underperform if any of the following occurs: U.S. and/or foreign bond markets decline. The issuer of a corporate bond owned by the Series defaults on its obligation to pay principal and/or interest or has its credit rating downgraded; this risk is greater for junk bonds and other lower quality bonds. Interest rates rise, credit spreads widen, and/or prepayment spreads widen. These events alone or in combination can cause bond prices to fall and reduce the value of the Series’ portfolio. Longer-term bonds have greater sensitivity to, and will therefore experience greater fluctuations in response to, interest rate changes than shorter-term bonds. Market volatility and/or prepayment spreads change to such a degree that prepayment uncertainty/risks are reassessed; the greater the uncertainty/risk, the wider the requisite prepayment spread. Current market conditions may pose heightened risks for the Series. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the Series. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, the Series' value may fluctuate and/or the Series may experience increased redemptions from shareholders, which may impact the Series’ liquidity or force the Series to sell securities into a declining or illiquid market. Risk of mortgage dollar rolls — The Series' mortgage dollar rolls could lose money if the price of the mortgage-backed securities sold falls below the agreed upon repurchase price, or if the counterparty is unable to honor the agreement. High-yield securities risk — The Series is subject to additional risks due its ability to invest in high-yield securities (junk bonds): High-yield securities may underperform other sectors of the bond market, or the market as a whole. The performance of high-yield securities tends to be more volatile than that of other sectors of the bond market. Given the total size of the high-yield securities market, high-yield securities can be less liquid than investment grade securities. The Series’ investments in high-yield securities will subject it to a substantial degree of credit risk because the prospect for repayment of principal and interest of many of these bonds is speculative. Bank loan risk — Investments in bank loans expose the Series to the credit risk of both the financial institution and the underlying borrower. The Series may also have difficulty valuing or disposing of bank loans because, in certain cases, the market for such instruments is not highly liquid. Preferred stock risk — Preferred stocks are sensitive to interest rate changes, and are also subject to equity market risk, which is the risk that stock prices will fluctuate and can decline and reduce the value of a Series’ investment. The rights of preferred stocks on the distribution of a corporation’s assets in the event of a liquidation are generally subordinate to the rights associated with a corporation’s debt securities. Preferred stock may also be subject to prepayment risk similar to fixed income securities. Foreign securities risk — Because the Series may invest in securities of foreign issuers, the Series is subject to additional risks. These include risks of adverse changes in foreign economic, political, regulatory and other conditions. The prices of foreign fixed income securities may, at times, move in a different direction than the prices of fixed income securities issued in the United States. The Series’ investments may be denominated in the currencies of the countries in which they are located; therefore, the value of the Series may be affected by changes in exchange rates between those foreign currencies and the U.S. dollar. The Advisor's attempt to manage the currency risk described above may not accurately predict movements in currency exchange rates, which could cause the Series to sustain losses. Emerging markets risk — The Series may also have special risks due to its investments in emerging market countries. In addition to the risks discussed above relating to investments in foreign companies located in developed countries, the Series’ investments in emerging market countries are subject to the following risks: Emerging markets may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries. Emerging market countries often have less uniformity in accounting and reporting requirements and unreliable securities valuation. It is sometimes difficult to obtain and enforce court judgments in emerging market countries and there is often a greater potential for nationalization and/or expropriation of assets by the government of an emerging market country. There will tend to be an increased risk of price volatility associated with the Series’ investments in emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar. Derivatives risk — The Series is subject to the following risks due to its ability to invest in options, futures, forwards and swaps: Derivatives can be extremely sensitive to changes in the market value of the underlying investment, and changes in the value of a derivative contract may not correlate perfectly with the underlying investment. The Series may not be able to receive amounts payable to it under its derivatives contracts as quickly as it may be able to sell or otherwise obtain payments from other investments, so the Series’ investments in such contracts may not be as liquid as the Series’ other investments. The Series’ use of forwards and swaps is also subject to the risk that the counterparty to the contract will default or otherwise become unable to honor its obligation to the Series. Mortgage- and asset-backed securities risks — The Series' investments in mortgage-backed and asset-backed securities may subject it to the following additional risks: Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations. Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities, and asset-backed securities may not have the benefit of any security interest in the related assets. Risks related to ETFs — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio of securities. The Series will also bear its proportionate share of the expenses of the purchased ETF in addition to its own expenses. Inflation protected security risk — The value of inflation protected fixed income securities, including Treasury Inflation Protected Securities (TIPS), generally will fluctuate in response to changes in "real" interest rates, generally decreasing when real interest rates rise and increasing when real interest rates fall. Real interest rates represent nominal (or stated) interest rates reduced by the expected impact of inflation. In addition, interest payments on inflation-indexed securities will generally vary up or down along with the rate of inflation. Sector focus risk — Because the Series' investments may, from time to time, be more heavily invested in a particular sector or sectors, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those sectors. As a result, the Series' share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of sectors. Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series' management or performance. Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders. The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the Series.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Summary of Past Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Class S shares of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Class S shares and Class I shares of the Series for different periods compare to those of two broad-based securities indices. The Series’ Class I shares commenced operations on August 1, 2013, and all performance below for the periods prior to that date reflect the performance and average annual total returns of the Series’ Class S shares. Because the Class I shares of the Series invest in the same portfolio of securities, returns for the Class I shares will be substantially similar to those of the Class S shares. Performance will be different only to the extent that the Class I shares have lower expenses. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Class S shares of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Class S shares and Class I shares of the Series for different periods compare to those of two broad-based securities indices.
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.manning-napier.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Calendar Years Ended December 31
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Quarterly Returns Highest (quarter ended 09/30/09): 7.48% Lowest (quarter ended 09/30/08): (3.42)%
Performance Table Heading	rr_PerformanceTableHeading	AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2017
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	After-tax returns are not relevant to investors who hold their Series 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	The after-tax figures are shown for one share class only, and would be different for the other share class.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The after-tax figures are shown for one share class only, and would be different for the other share class. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Unconstrained Bond Series | CLASS I
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees (paid directly from your investment)	rr_ShareholderFeeOther	none
Management Fees	rr_ManagementFeesOverAssets	0.45%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Shareholder Services Fee	rr_Component1OtherExpensesOverAssets	none
Remainder of Other Expenses	rr_Component2OtherExpensesOverAssets	0.05%
Other Expenses	rr_OtherExpensesOverAssets	0.05%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.50%	[1]
AFTER 1 YEAR	rr_ExpenseExampleYear01	$ 51
AFTER 3 YEARS	rr_ExpenseExampleYear03	160
AFTER 5 YEARS	rr_ExpenseExampleYear05	280
AFTER 10 YEARS	rr_ExpenseExampleYear10	$ 628
1 Year	rr_AverageAnnualReturnYear01	3.52%
5 Years	rr_AverageAnnualReturnYear05	2.10%
10 Years	rr_AverageAnnualReturnYear10	5.12%
Since Inception	rr_AverageAnnualReturnSinceInception	4.81%	[2]
Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 21, 2005
Unconstrained Bond Series | CLASS S
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees (paid directly from your investment)	rr_ShareholderFeeOther	none
Management Fees	rr_ManagementFeesOverAssets	0.45%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Shareholder Services Fee	rr_Component1OtherExpensesOverAssets	0.25%
Remainder of Other Expenses	rr_Component2OtherExpensesOverAssets	0.05%
Other Expenses	rr_OtherExpensesOverAssets	0.30%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.75%	[1]
AFTER 1 YEAR	rr_ExpenseExampleYear01	$ 77
AFTER 3 YEARS	rr_ExpenseExampleYear03	240
AFTER 5 YEARS	rr_ExpenseExampleYear05	417
AFTER 10 YEARS	rr_ExpenseExampleYear10	$ 930
2008	rr_AnnualReturn2008	1.24%
2009	rr_AnnualReturn2009	14.35%
2010	rr_AnnualReturn2010	10.18%
2011	rr_AnnualReturn2011	4.91%
2012	rr_AnnualReturn2012	10.94%
2013	rr_AnnualReturn2013	(0.02%)
2014	rr_AnnualReturn2014	3.18%
2015	rr_AnnualReturn2015	(0.88%)
2016	rr_AnnualReturn2016	4.08%
2017	rr_AnnualReturn2017	3.19%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Highest
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Sep. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	7.48%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Lowest
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(3.42%)
1 Year	rr_AverageAnnualReturnYear01	3.19%
5 Years	rr_AverageAnnualReturnYear05	1.89%
10 Years	rr_AverageAnnualReturnYear10	5.01%
Since Inception	rr_AverageAnnualReturnSinceInception	4.73%	[2]
Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 21, 2005
Unconstrained Bond Series | Return After Taxes on Distributions | CLASS S
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	2.18%
5 Years	rr_AverageAnnualReturnYear05	0.55%
10 Years	rr_AverageAnnualReturnYear10	3.41%
Since Inception	rr_AverageAnnualReturnSinceInception	3.20%	[2]
Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 21, 2005
Unconstrained Bond Series | Return After Taxes on Distributions and Sale of Series Shares | CLASS S
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	1.80%
5 Years	rr_AverageAnnualReturnYear05	0.91%
10 Years	rr_AverageAnnualReturnYear10	3.35%
Since Inception	rr_AverageAnnualReturnSinceInception	3.15%	[2]
Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 21, 2005
Unconstrained Bond Series | Citigroup 3-Month T-Bill Index (reflect no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	0.84%
5 Years	rr_AverageAnnualReturnYear05	0.24%
10 Years	rr_AverageAnnualReturnYear10	0.34%
Since Inception	rr_AverageAnnualReturnSinceInception	1.18%	[2]
Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 30, 2005
Unconstrained Bond Series | Bloomberg Barclays U.S. Aggregate Bond Index (reflect no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	3.54%
5 Years	rr_AverageAnnualReturnYear05	2.10%
10 Years	rr_AverageAnnualReturnYear10	4.01%
Since Inception	rr_AverageAnnualReturnSinceInception	4.20%	[2]
Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 21, 2005

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

[2] Performance numbers for the Series and the Bloomberg Barclays U.S. Aggregate Bond Index are calculated from April 21, 2005, the inception date of the Series' Class S shares. Performance numbers for the Citigroup 3-Month T-Bill Index are calculated from April 30, 2005.

XML

World Opportunities Series

World Opportunities Series

Summary Section

Investment Goal

The Series’ investment objective is to provide long-term growth by investing principally in the common stocks of companies located around the world.

Fees and Expenses

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

WORLD OPPORTUNITIES SERIES

Shareholder Fees
(paid directly from your investment)

Shareholder Fees	World Opportunities Series Class S USD ($)
Shareholder Fees (paid directly from your investment)	none

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

Annual Fund Operating Expenses	World Opportunities Series Class S
Management Fees	0.75%	[1]
Distribution and Service (12b-1) Fees	none
Other Expenses	0.44%	[2]
Shareholder Services Fee	0.25%
Remainder of Other Expenses	0.19%
Total Annual Fund Operating Expenses	1.19%	[3]
Less Fee Waiver and/or Expense Reimbursement	(0.09%)	[4]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	1.10%	[3]

Example

The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	AFTER 1 YEAR	AFTER 3 YEARS	AFTER 5 YEARS	AFTER 10 YEARS
World Opportunities Series | Class S | USD ($)	112	369	646	1,435

Portfolio Turnover

The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 38% of the average value of its portfolio.

Principal Investment Strategies

The Series invests primarily in common stocks of foreign companies, which may be located both in developed and in emerging markets. The Series may also invest in American Depository Receipts (ADRs) and other U.S. dollar denominated securities of foreign issuers and U.S. stocks. The Series may invest in stocks of small-, large-, or mid-size companies.

The Series may purchase shares of exchange-traded funds (ETFs), including to establish a diversified position in a particular market sector or to manage cash flows. The Advisor believes that purchasing ETFs may allow it to manage the Series’ portfolio more efficiently than would otherwise be possible.

The Series may, but is not required to, undertake hedging activities and may invest in forward foreign currency contracts to hedge currency risks associated with the purchase of individual securities denominated in a foreign currency.

The Advisor uses a “bottom-up” strategy, focusing on individual security selection to choose stocks from companies around the world.

The Advisor analyzes factors such as the management, financial condition, and market position of individual companies to select companies that it believes will make attractive long-term investments. In selecting individual securities, the Advisor uses fundamental analysis and looks for one or more of the following characteristics:

• Strong strategic profiles (e.g., strong market position, benefits from technology, market-share gains in a mature market and high barriers to entry).

• Improving market share in consolidating industries.

• Low price relative to fundamental or break-up value.

The Advisor will consider selling a security if:

• it no longer fits the Series' investment strategies or valuation discipline;

• it has reached the Advisor’s target sell price; or

• a more attractive investment opportunity is identified.

There are no prescribed limits on the sector allocation of the Series' investments and, from time to time, the Series may focus its investments in one or more sectors.

Principal Risks of Investing in the Series

As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series.

Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect.

Market risk — Because the Series invests in stocks, the value of your investment will fluctuate in response to stock market movements. This means that you could lose money on your investment in the Series or the Series could underperform if any of the following occurs:

• U.S. and/or foreign stock markets decline.

• An adverse event, such as an unfavorable earnings report, depresses the value of one or more of the Series’ portfolio holdings.

Foreign securities risk — Because the Series may invest in securities of foreign issuers, the Series is subject to additional risks. These include risks of adverse changes in foreign economic, political, regulatory and other conditions. The prices of foreign common stocks may, at times, move in a different direction than the prices of U.S. stocks. The Series’ investments may be denominated in the currencies of the countries in which they are located; therefore, the value of the Series may be affected by changes in exchange rates between those foreign currencies and the U.S. dollar. The Advisor’s attempt to manage the currency risk described above may not accurately predict movements in currency exchange rates, which could cause the Series to sustain losses.

Emerging markets risk — The Series may also have special risks due to its investments in emerging market countries. In addition to the risks discussed above relating to investments in foreign companies located in developed countries, the Series’ investments in emerging market countries are subject to the following risks:

• Emerging markets may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries.

• Emerging market countries often have less uniformity in accounting and reporting requirements and unreliable securities valuation.

• It is sometimes difficult to obtain and enforce court judgments in emerging market countries and there is often a greater potential for nationalization and/or expropriation of assets by the government of an emerging market country.

• There will tend to be an increased risk of price volatility associated with the Series’ investments in emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

Large-cap risk — Large-cap stocks tend to go in and out of favor based on market and economic conditions. During a period when large-cap stocks fall behind other types of investments — small-cap stocks, for instance — the Series' performance could be reduced to the extent its portfolio is holding large-cap stocks.

Small- and mid-cap risk — The Series may also have special risks due to its investments in stocks of small- and mid-size companies. These risks include the following:

• The stocks of small- and mid-size companies may be subject to more abrupt or erratic market movements than the stocks of larger companies.

• The stocks of small- and mid-size companies may be subject to liquidity risk because such stocks may have lower trading volume and be less marketable than the stocks of larger companies. Liquidity risk is further described below.

• Small- and mid-size companies may have limited product lines, markets, or financial resources, and they may depend on a small management group. As a result, they fail more often than larger companies.

Forward contracts risk — The Series is subject to the following risks due to its ability to invest in forward contracts:

• Forwards, like all derivatives, can be extremely sensitive to changes in the market value of the underlying investment, and changes in the value of a forward contract may not correlate perfectly with the underlying investment.

• The Series may not be able to receive amounts payable to it under its forward contracts as quickly as it may be able to sell or otherwise obtain payments from other investments, so the Series’ investments in such contracts may not be as liquid as the Series’ other investments.

• The Series’ use of forwards is also subject to the risk that the counterparty to the forward contract will default or otherwise become unable to honor its obligation to the Series.

Risks related to ETFs — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio of securities. The Series will also bear its proportionate share of the expenses of the purchased ETF in addition to its own expenses.

Sector focus risk — Because the Series' investments may, from time to time, be more heavily invested in a particular sector or sectors, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those sectors. As a result, the Series' share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of sectors.

Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series' management or performance.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders.

The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.

Summary of Past Performance

The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Series for different periods compare to those of a broad-based securities index. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.

Calendar Years Ended December 31

Quarterly Returns
Highest (quarter ended 09/30/09): 24.95%
Lowest (quarter ended 12/31/08): (24.30)%

AVERAGE ANNUAL TOTAL RETURNS
FOR PERIODS ENDED DECEMBER 31, 2017

Average Annual Total Returns - World Opportunities Series	1 Year	5 Years	10 Years	Since Inception	[1]	Inception Date
Class S	23.33%	4.93%	1.44%	7.63%		Sep. 06, 1996
Class S | Return After Taxes on Distributions	23.22%	4.27%	0.90%	5.37%		Sep. 06, 1996
Class S | Return After Taxes on Distributions and Sale of Series Shares	13.59%	3.89%	1.20%	5.40%		Sep. 06, 1996
MSCI ACWI ex USA Index (reflects no deduction for fees, expenses, or taxes)	27.19%	6.80%	1.84%	5.54%		Sep. 30, 1996

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

[1] Management fees have been restated to reflect contractual changes to the management fees paid by the Series.

[2] Other expenses have been restated to reflect the implementation of a 0.25% shareholder services fee.

[3] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

[4] Manning & Napier Advisors, LLC (the Advisor) has contractually agreed to limit its fees and reimburse expenses to the extent necessary so that the total direct annual fund operating expenses of the Series, exclusive of the Series' Shareholder Services Fee, do not exceed 0.85% of the Series' average daily net assets. This contractual waiver will continue until at least April 30, 2019 and may not be amended or terminated by the Advisor prior to such date without the approval of the Series’ Board of Directors. The Advisor’s agreement to limit the Series' operating expenses is limited to direct operating expenses and, therefore, does not apply to acquired fund fees and expenses, which are indirect expenses incurred by the Series through its investments in other investment companies.

[1] Performance numbers for the Series are calculated from September 6, 1996, the Series' inception date. Performance numbers for the Index are calculated from September 30, 1996.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	MANNING & NAPIER FUND, INC.
Prospectus Date	rr_ProspectusDate	May 01, 2018
World Opportunities Series
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	World Opportunities Series Summary Section
Objective [Heading]	rr_ObjectiveHeading	Investment Goal
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Series’ investment objective is to provide long-term growth by investing principally in the common stocks of companies located around the world.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Series.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	WORLD OPPORTUNITIES SERIES Shareholder Fees (paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund 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	April 30, 2019
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 38% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	38.00%
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Management fees have been restated to reflect contractual changes to the management fees paid by the Series. Other expenses have been restated to reflect the implementation of a 0.25% shareholder services fee.
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ 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 Series invests primarily in common stocks of foreign companies, which may be located both in developed and in emerging markets. The Series may also invest in American Depository Receipts (ADRs) and other U.S. dollar denominated securities of foreign issuers and U.S. stocks. The Series may invest in stocks of small-, large-, or mid-size companies. The Series may purchase shares of exchange-traded funds (ETFs), including to establish a diversified position in a particular market sector or to manage cash flows. The Advisor believes that purchasing ETFs may allow it to manage the Series’ portfolio more efficiently than would otherwise be possible. The Series may, but is not required to, undertake hedging activities and may invest in forward foreign currency contracts to hedge currency risks associated with the purchase of individual securities denominated in a foreign currency. The Advisor uses a “bottom-up” strategy, focusing on individual security selection to choose stocks from companies around the world. The Advisor analyzes factors such as the management, financial condition, and market position of individual companies to select companies that it believes will make attractive long-term investments. In selecting individual securities, the Advisor uses fundamental analysis and looks for one or more of the following characteristics: Strong strategic profiles (e.g., strong market position, benefits from technology, market-share gains in a mature market and high barriers to entry). Improving market share in consolidating industries. Low price relative to fundamental or break-up value. The Advisor will consider selling a security if: it no longer fits the Series' investment strategies or valuation discipline; it has reached the Advisor’s target sell price; or a more attractive investment opportunity is identified. There are no prescribed limits on the sector allocation of the Series' investments and, from time to time, the Series may focus its investments in one or more sectors.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Series
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series. Management risk — The value of your investment may decline if the Advisor’s judgments about the attractiveness, relative value or potential appreciation of a particular security or strategy prove to be incorrect. Market risk — Because the Series invests in stocks, the value of your investment will fluctuate in response to stock market movements. This means that you could lose money on your investment in the Series or the Series could underperform if any of the following occurs: U.S. and/or foreign stock markets decline. An adverse event, such as an unfavorable earnings report, depresses the value of one or more of the Series’ portfolio holdings. Foreign securities risk — Because the Series may invest in securities of foreign issuers, the Series is subject to additional risks. These include risks of adverse changes in foreign economic, political, regulatory and other conditions. The prices of foreign common stocks may, at times, move in a different direction than the prices of U.S. stocks. The Series’ investments may be denominated in the currencies of the countries in which they are located; therefore, the value of the Series may be affected by changes in exchange rates between those foreign currencies and the U.S. dollar. The Advisor’s attempt to manage the currency risk described above may not accurately predict movements in currency exchange rates, which could cause the Series to sustain losses. Emerging markets risk — The Series may also have special risks due to its investments in emerging market countries. In addition to the risks discussed above relating to investments in foreign companies located in developed countries, the Series’ investments in emerging market countries are subject to the following risks: Emerging markets may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries. Emerging market countries often have less uniformity in accounting and reporting requirements and unreliable securities valuation. It is sometimes difficult to obtain and enforce court judgments in emerging market countries and there is often a greater potential for nationalization and/or expropriation of assets by the government of an emerging market country. There will tend to be an increased risk of price volatility associated with the Series’ investments in emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar. Large-cap risk — Large-cap stocks tend to go in and out of favor based on market and economic conditions. During a period when large-cap stocks fall behind other types of investments — small-cap stocks, for instance — the Series' performance could be reduced to the extent its portfolio is holding large-cap stocks. Small- and mid-cap risk — The Series may also have special risks due to its investments in stocks of small- and mid-size companies. These risks include the following: The stocks of small- and mid-size companies may be subject to more abrupt or erratic market movements than the stocks of larger companies. The stocks of small- and mid-size companies may be subject to liquidity risk because such stocks may have lower trading volume and be less marketable than the stocks of larger companies. Liquidity risk is further described below. Small- and mid-size companies may have limited product lines, markets, or financial resources, and they may depend on a small management group. As a result, they fail more often than larger companies. Forward contracts risk — The Series is subject to the following risks due to its ability to invest in forward contracts: Forwards, like all derivatives, can be extremely sensitive to changes in the market value of the underlying investment, and changes in the value of a forward contract may not correlate perfectly with the underlying investment. The Series may not be able to receive amounts payable to it under its forward contracts as quickly as it may be able to sell or otherwise obtain payments from other investments, so the Series’ investments in such contracts may not be as liquid as the Series’ other investments. The Series’ use of forwards is also subject to the risk that the counterparty to the forward contract will default or otherwise become unable to honor its obligation to the Series. Risks related to ETFs — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio of securities. The Series will also bear its proportionate share of the expenses of the purchased ETF in addition to its own expenses. Sector focus risk — Because the Series' investments may, from time to time, be more heavily invested in a particular sector or sectors, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those sectors. As a result, the Series' share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of sectors. Liquidity risk — The Series is subject to the risk that, at certain times, its securities may be difficult or impossible to sell at the time and the price that the Series would like. The Series may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Series' management or performance. Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series’ shares. Redemptions by these institutions or individuals in the Series may impact the Series’ liquidity and net asset value (NAV). These redemptions may also force the Series to sell securities, which may cause the Series to experience a loss (particularly during periods of declining or illiquid markets), as well as cause the Series’ portfolio turnover rate and transaction costs to rise, which may negatively affect the Series’ performance and increase the likelihood of capital gain distributions for remaining shareholders. The risks above could contribute to a decline in the value of the Series’ investments and, consequently, the share price of the Series.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the Series.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Summary of Past Performance
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Series for different periods compare to those of a broad-based securities index. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart shows the variability in the performance of the Series by showing changes in the performance of the Series for each of the last ten calendar years. The total return table shows how the average annual total returns for the Series for different periods compare to those of a broad-based securities index.
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.manning-napier.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Calendar Years Ended December 31
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Quarterly Returns Highest (quarter ended 09/30/09): 24.95% Lowest (quarter ended 12/31/08): (24.30)%
Performance Table Heading	rr_PerformanceTableHeading	AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2017
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
World Opportunities Series | Class S
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees (paid directly from your investment)	rr_ShareholderFeeOther	none
Management Fees	rr_ManagementFeesOverAssets	0.75%	[1]
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Shareholder Services Fee	rr_Component1OtherExpensesOverAssets	0.25%
Remainder of Other Expenses	rr_Component2OtherExpensesOverAssets	0.19%
Other Expenses	rr_OtherExpensesOverAssets	0.44%	[2]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.19%	[3]
Less Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.09%)	[4]
Total Annual Fund Operating Expenses	rr_NetExpensesOverAssets	1.10%	[3]
AFTER 1 YEAR	rr_ExpenseExampleYear01	$ 112
AFTER 3 YEARS	rr_ExpenseExampleYear03	369
AFTER 5 YEARS	rr_ExpenseExampleYear05	646
AFTER 10 YEARS	rr_ExpenseExampleYear10	$ 1,435
2008	rr_AnnualReturn2008	(40.07%)
2009	rr_AnnualReturn2009	39.12%
2010	rr_AnnualReturn2010	9.23%
2011	rr_AnnualReturn2011	(16.14%)
2012	rr_AnnualReturn2012	18.81%
2013	rr_AnnualReturn2013	18.79%
2014	rr_AnnualReturn2014	(9.77%)
2015	rr_AnnualReturn2015	(5.91%)
2016	rr_AnnualReturn2016	2.26%
2017	rr_AnnualReturn2017	23.33%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Highest
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Sep. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	24.95%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Lowest
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(24.30%)
1 Year	rr_AverageAnnualReturnYear01	23.33%
5 Years	rr_AverageAnnualReturnYear05	4.93%
10 Years	rr_AverageAnnualReturnYear10	1.44%
Since Inception	rr_AverageAnnualReturnSinceInception	7.63%	[5]
Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 06, 1996
World Opportunities Series | Return After Taxes on Distributions | Class S
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	23.22%
5 Years	rr_AverageAnnualReturnYear05	4.27%
10 Years	rr_AverageAnnualReturnYear10	0.90%
Since Inception	rr_AverageAnnualReturnSinceInception	5.37%	[5]
Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 06, 1996
World Opportunities Series | Return After Taxes on Distributions and Sale of Series Shares | Class S
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	13.59%
5 Years	rr_AverageAnnualReturnYear05	3.89%
10 Years	rr_AverageAnnualReturnYear10	1.20%
Since Inception	rr_AverageAnnualReturnSinceInception	5.40%	[5]
Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 06, 1996
World Opportunities Series | MSCI ACWI ex USA Index (reflects no deduction for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	27.19%
5 Years	rr_AverageAnnualReturnYear05	6.80%
10 Years	rr_AverageAnnualReturnYear10	1.84%
Since Inception	rr_AverageAnnualReturnSinceInception	5.54%	[5]
Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 30, 1996

[1] Management fees have been restated to reflect contractual changes to the management fees paid by the Series.

[2] Other expenses have been restated to reflect the implementation of a 0.25% shareholder services fee.

[3] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in other investment companies.

[4] Manning & Napier Advisors, LLC (the Advisor) has contractually agreed to limit its fees and reimburse expenses to the extent necessary so that the total direct annual fund operating expenses of the Series, exclusive of the Series' Shareholder Services Fee, do not exceed 0.85% of the Series' average daily net assets. This contractual waiver will continue until at least April 30, 2019 and may not be amended or terminated by the Advisor prior to such date without the approval of the Series’ Board of Directors. The Advisor’s agreement to limit the Series' operating expenses is limited to direct operating expenses and, therefore, does not apply to acquired fund fees and expenses, which are indirect expenses incurred by the Series through its investments in other investment companies.

[5] Performance numbers for the Series are calculated from September 6, 1996, the Series' inception date. Performance numbers for the Index are calculated from September 30, 1996.

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Strategic Income Conservative Series

Strategic Income Conservative Series

Summary Section

Investment Goal

The Series’ investment objective is to manage against capital risk and generate income with a

secondary goal of pursuing long-term capital growth.

Fees and Expenses

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

STRATEGIC INCOME CONSERVATIVE SERIES

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees - Strategic Income Conservative Series - USD ($)	CLASS I	CLASS S
Shareholder Fees (fees paid directly from your investment)	none	none

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

Annual Fund Operating Expenses - Strategic Income Conservative Series		CLASS I	CLASS S
Management Fee		none	none
Distribution (12b-1) Fees		none	none
Other Expenses		0.51%	0.76%
Shareholder Services Fee		none	0.25%
Remainder of Other Expenses		0.51%	0.51%
Acquired Fund Fees and Expenses (AFFE)		0.54%	0.54%
Total Annual Fund Operating Expenses	[1]	1.05%	1.30%
Less Fee Waiver and/or Expense Reimbursement	[2]	(0.46%)	(0.46%)
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1]	0.59%	0.84%

Example

The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same (taking into account the Advisor’s contractual expense limitation for the first year only). Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example - Strategic Income Conservative Series - USD ($)	AFTER 1 YEAR	AFTER 3 YEARS	AFTER 5 YEARS	AFTER 10 YEARS
CLASS I	60	288	535	1,241
CLASS S	86	367	669	1,527

Portfolio Turnover

The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 21% of the average value of its portfolio.

Principal Investment Strategies

The Series is designed to generate income, pursue capital growth in order to provide purchasing power protection, and to manage risk. The Series seeks to achieve its investment objective by investing in a combination of other Series of the Manning & Napier Fund, Inc. and advised by the Advisor (the “underlying funds”) according to an asset allocation strategy. The Series may invest in a combination of the Core Bond Series, Disciplined Value Series, Equity Income Series, Global Fixed Income Series, High Yield Bond Series, Real Estate Series, and Unconstrained Bond Series, as well as other Series of the Fund.

As of March 31, 2018, the Series’ target allocation among the underlying funds was as follows:

Core Bond Series	52%
Disciplined Value Series	12%
Equity Income Series	11%
High Yield Bond Series	3%
Real Estate Series	8%
Unconstrained Bond Series	14%

The Core Bond Series will invest, under normal circumstances, at least 80% of its net assets in investment grade bonds and other financial instruments, primarily exchange-traded funds (ETFs), with economic characteristics similar to bonds. The Core Bond Series is not subject to any maturity or duration restrictions, but will vary its average dollar weighted portfolio maturity and duration depending on the Advisor’s outlook for yields. The Disciplined Value Series will, under normal circumstances, invest at least 80% of its assets in dividend-paying common stocks. In selecting stocks for the Disciplined Value Series, the Advisor uses a systematic process to identify stocks of U.S. companies that it believes are undervalued in the market, based on factors such as free cash flow generation and earnings power, and that meet other investment criteria relating to minimum dividend yield, dividend sustainability, and financial health. The Disciplined Value Series invests primarily in the common stocks of mid- to large- capitalization companies (generally companies with market capitalizations at the time of purchase within the market capitalization range of the companies comprising the Russell 1000^® Value Index). The Equity Income Series will invest, under normal circumstances, at least 80% of its net assets in equity securities. It invests primarily in income-producing equity securities. The Equity Income Series may invest in securities of small-, large- or mid-size companies, and it may also invest in interests in business development companies (BDCs) and limited partner interests in master limited partnerships (MLPs). The Equity Income Series may also invest in derivative instruments, as it may write (sell) options on securities. The Global Fixed Income Series will invest, under normal circumstances, at least 80% of its assets in fixed income securities. These securities may be issued by issuers located anywhere in the world, including emerging markets. Under normal circumstances, the Global Fixed Income Series will invest at least 40% of its net assets in securities issued by non-U.S. companies or non-U.S. governments, their agencies, or instrumentalities. The Global Fixed Income Series invests primarily in investment grade securities but may invest up to 20% of its assets in lower quality bonds, commonly known as “junk bonds,” The Global Fixed Income Series is not subject to any maturity or duration restrictions but will vary its average dollar-weighted portfolio maturity and duration depending on the Advisor’s outlook for yields and currency fluctuations. The High Yield Bond Series will invest, under normal circumstances, at least 80% of its net assets in bonds that are rated below investment grade (junk bonds) and other securities, primarily ETFs, that are designed to track the performance of non-investment grade securities. The High Yield Bond Series is not subject to any maturity or duration restrictions but will vary its average dollar weighted portfolio maturity and duration depending on the Advisor’s outlook for yields. The Real Estate Series will invest, under normal circumstances, at least 80% of its net assets in securities of companies that are principally engaged in the real estate industry. The Real Estate Series may invest in equity securities, including convertible securities, of small-, large-, or mid-size companies, and it may also invest in debt securities, typically investment grade debt securities. The Real Estate Series may also invest in derivative instruments, as it may write (sell) options on securities. The Unconstrained Bond Series will invest, under normal circumstances, at least 80% of its net assets in bonds and other financial instruments, principally derivative instruments and ETFs, with economic characteristics similar to bonds. The Unconstrained Bond Series is not subject to any maturity or duration restrictions but its average dollar-weighted portfolio duration will normally vary from negative 3 years to positive 8 years depending on the Advisor’s outlook for yields. The Unconstrained Bond Series may invest up to 50% of its assets in below investment grade securities (also referred to as “junk bonds”) and may invest up to 50% of its assets in non-U.S. dollar denominated securities, including securities issued by companies located in emerging markets. The Unconstrained Bond Series may also invest in derivative instruments, as it may invest in options, futures, forwards and swaps.

The Series is managed with a more conservative asset allocation than the Strategic Income Moderate Series. The asset allocation range for the Series is expected to be 15%-45% in the underlying stock funds and 55%-85% in the underlying bond funds.

The Series’ management team will actively adjust the Series’ allocation to the underlying funds in accordance with its investment goal and the Advisor’s view of prevailing market conditions, such as market trends, its outlook for a given asset class, and the underlying funds’ performance in various market conditions. Accordingly, the Series’ allocation to a particular underlying fund may increase or decrease throughout the year and the Series may have no allocation to a particular underlying fund during the year. At any given time, the Series’ allocation to the underlying funds may be affected by a number of factors, such as the performance of the underlying funds and the size and frequency of purchase and redemption orders.

Principal Risks of Investing in the Series

As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series.

Asset allocation risk — The Series is subject to asset allocation risk, which is the risk that the selection of the underlying funds and the allocation of the underlying funds' assets among the various asset classes and market segments will cause the Series to underperform other Series with a similar investment objective.

Market risk — Stock and bond markets rise and fall daily. As with any investment whose performance is tied to these markets, the value of your investment in the Series will fluctuate, which means that you could lose money on your investment.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series' shares. Redemptions by these institutions or individuals may impact the Series' liquidity and net asset value (NAV).

Principal Risks of the Underlying Funds

Through its investments in the underlying funds, the Series will be subject to the risks of those funds, which include the following:

Investment risk — The Series may experience losses with respect to its investment in an underlying fund. Further, there is no guarantee that an underlying fund will be able to achieve its objective.

Management risk — The underlying funds are actively managed mutual funds. Any actively managed mutual fund is subject to the risk that its investment advisor will make poor security selections. When making investment decisions for an underlying fund, the Advisor applies its own investment techniques and risk analyses, but there can be no guarantee that they will produce the desired results.

Because the Disciplined Value Series’ portfolio is selected using a systematic process, the Series is subject to the additional risk that the Advisor’s judgments regarding the investment criteria underlying the systematic process may prove to be incorrect. In addition, the Advisor's approach to value investing, or value investing in general, may go in and out of favor in the market.

Fixed income risk — The prices of an underlying fund’s fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. The lower the quality of the bonds, the greater this risk becomes. Current market conditions may pose heightened risks for the underlying funds. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the underlying funds. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, an underlying fund’s value may fluctuate and/or an underlying fund may experience increased redemptions from shareholders, which may impact an underlying fund’s liquidity or force an underlying fund to sell securities into a declining or illiquid market.

Convertible securities risk — An underlying fund’s investments in convertible securities are subject to interest rate risk and credit risk, which are described below. In addition, they are also subject to the risk that the price of the underlying common stock will go down, which may cause a proportionate (or disproportionate) decline in the price of the convertible security.

Risks related to ETFs — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio of securities. An underlying fund will also bear its proportionate share of the expenses of the purchased ETF in addition to its own expenses.

Interest rate risk — The risk that the value of fixed income securities, including U.S. Government securities, will fall due to rising interest rates. Longer-term bonds will experience greater fluctuations than shorter-term bonds in response to interest rate changes. Risks associated with rising rates are heightened given that interest rates in the U.S. are at, or near, historic lows.

Credit risk — The risk that the issuer of a security, or the counterparty to a contract, will default or otherwise become unable to honor a financial obligation. This risk is greater for junk bonds and other lower quality bonds.

Prepayment and extension risk — Fixed income securities may be paid off earlier or later than expected. Either situation could cause an underlying fund to hold securities paying lower-than-market rates of interest, which could hurt the fund’s yield or share price.

Mortgage- and asset-backed securities risks — The underlying funds’ investments in mortgage-backed and asset-backed securities may subject them to the following additional risks:

• Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations.

• Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities, and asset-backed securities may not have the benefit of any security interest in the related assets.

Equity risk — The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

Large-cap risk — Large-cap stocks tend to go in and out of favor based on market and economic conditions. During a period when large-cap stocks fall behind other types of investments — small-cap stocks, for instance — an underlying fund’s performance could be reduced to the extent its portfolio is holding large-cap stocks.

Small- and mid-cap risk — Historically, small- and mid-cap stocks have been riskier than large-cap stocks. Stock prices of smaller companies may be based in substantial part on future expectations rather than current achievements and may move sharply, especially during market upturns and downturns. Small- and mid-cap companies themselves may be more vulnerable to adverse business or economic events than larger, more established companies. Investments in small- and mid-cap stocks are also subject to liquidity risk, which is described below.

Foreign investment risk — An underlying fund’s investments in securities of foreign issuers may involve certain risks that are greater than those associated with investments in securities of U.S. issuers. These include risks of adverse changes in foreign economic, political, regulatory and other conditions; changes in currency exchange rates or exchange control regulations (including limitations on currency movements and exchanges); differing accounting, auditing, financial reporting and legal standards and practices; differing securities market structures; and higher transaction costs. These risks may be heightened in connection with investments in emerging markets.

Real estate securities risk — An underlying fund’s holdings in securities of issuers in the real estate industry, including investments in real estate investment trusts (REITs) and real estate operating companies (REOCs), may subject it to additional risks even though the underlying fund does not invest directly in real estate. These risks include, but are not limited to, the following: fluctuations in the value of real estate properties and interest rates, defaults by borrowers or tenants, extended vacancies and declining rents, a lack of ability to obtain mortgage financing or other limits to accessing the credit or capital markets, increased competition and overbuilding and increases in real estate or operating taxes. Any geographic concentration of an underlying fund’s real estate related investments could result in the underlying fund being subject to the above risks to a greater degree. In addition, REITs and REOCs have their own expenses, and an underlying fund that invests in REITs and REOCs will bear a proportionate share of those expenses.

High-yield securities risk — An underlying fund’s investments in high-yield securities (junk bonds) may subject it to the following additional risks:

• High-yield securities may underperform other sectors of the bond market, or the market as a whole.

• The performance of high-yield securities tends to be more volatile than that of other sectors of the bond market.

• Given the total size of the high-yield securities market, high-yield securities can be less liquid than investment grade securities.

• An underlying fund’s investments in high-yield securities will subject it to a substantial degree of credit risk because the prospect for repayment of principal and interest of many of these bonds is speculative.

Non-diversification risk — Certain of the underlying funds are non-diversified, which means that they may invest in the securities of relatively few issuers. As a result, an underlying fund may be susceptible to a single adverse economic, political or regulatory occurrence affecting one or more of those issuers, and may experience increased volatility due to its investments in those securities.

Risks of investing in BDCs — An underlying fund's investments in BDCs are subject to additional risks. BDCs generally invest in less mature private companies or thinly traded U.S. public companies which involve greater risk than well-established publicly-traded companies. Generally, little public information exists for the companies in which a BDC may invest and there is a risk that investors in the BDC may not be able to make a fully informed evaluation of a BDC and its portfolio of investments. An underlying fund will indirectly bear its proportionate share of any management and other operating expenses and of any performance based or incentive fees charged by the BDCs in which it invests, in addition to the expenses paid by the underlying fund.

Risks of investing in MLPs — An underlying fund's investments in MLPs are subject to additional risks. MLPs often own several properties or businesses (or other interests) that are related to oil and gas industries or other natural resources, but they also may finance other projects. To the extent that an MLP’s interests are all in a particular industry, the MLP will be negatively impacted by economic events adversely impacting that industry. There may be fewer protections afforded to investors in a MLP than investors in a corporation. For example, investors in MLPs may have limited voting rights or be liable under certain circumstances for amounts greater than the amount of their investment. Additional risks involved with investing in a MLP are risks associated with the specific industry or industries in which the partnership invests, such as the risks of investing in real estate, or oil and gas industries.

Derivatives risk — An underlying fund is subject to the following risks due to its ability to invest in options, futures, forwards and swaps:

• Derivatives can be extremely sensitive to changes in the market value of the underlying investment, and changes in the value of a derivative contract may not correlate perfectly with the underlying investment.

• An underlying fund may not be able to receive amounts payable to it under its derivatives contracts as quickly as it may be able to sell or otherwise obtain payments from other investments, so the underlying fund’s investments in such contracts may not be as liquid as the underlying fund’s other investments.

• An underlying fund’s use of forwards and swaps is also subject to the risk that the counterparty to the contract will default or otherwise become unable to honor its obligation to the underlying fund.

Sector focus risk — Because an underlying fund's investments may, from time to time, be more heavily invested in a particular sector or sectors, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those sectors. As a result, an underlying fund's share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of sectors.

Liquidity risk — A particular investment may be difficult to purchase or sell. An underlying fund may be unable to sell illiquid securities at an advantageous time or price.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of an underlying fund’s shares. Redemptions by these institutions or individuals in an underlying fund may impact the underlying fund’s liquidity and net asset value (NAV).

The risks above could contribute to a decline in the value of the investments of the Series and/or the underlying funds and, consequently, the share price of the Series.

Summary of Past Performance

The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the performance of the Class S shares of the Series for each full calendar year since its inception. The total return table shows how the average annual total returns for the Class S and Class I shares of the Series for different periods compare to those of a broad-based securities index, as well as a 15/5/10/70 Blended Index, 15% of which is the Russell 3000^® Value Index, 5% of which is the MSCI ACWI ex USA Index, 10% of which is the MSCI U.S. Real Estate Investment Trust Index, and 70% of which is the Bloomberg Barclays U.S. Aggregate Bond Index. The 15/5/10/70 Blended Index is provided because it better reflects the asset allocation of the Series as compared to the broad-based index. Because the Series' asset allocation will vary over time, the composition of the Series' portfolio may not match the composition of the comparative indices' portfolios. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.

Calendar Years Ended December 31

Quarterly Returns
Highest (quarter ended 06/30/14): 3.50%
Lowest (quarter ended 06/30/13): (2.08)%

AVERAGE ANNUAL TOTAL RETURNS
FOR PERIODS ENDED DECEMBER 31, 2017

Average Annual Total Returns - Strategic Income Conservative Series	1 Year	5 Years	Since Inception	[1]	Inception Date
Class S Shares	7.17%	4.89%	5.10%		Aug. 01, 2012
Class S Shares | Return After Taxes on Distributions	6.07%	3.44%	3.62%		Aug. 01, 2012
Class S Shares | Return After Taxes on Distributions and Sale of Series Shares	4.29%	3.26%	3.43%		Aug. 01, 2012
Class I Shares	7.33%	5.17%	5.35%		Aug. 01, 2012
Bloomberg Barclays US Intermediate Aggregate Bond Index (reflect no deduction for fees, expenses, or taxes)	2.27%	1.70%	1.70%		Aug. 01, 2012
15/5/10/70 Blended Index (reflect no deduction for fees, expenses, or taxes)	6.09%	4.78%	4.82%		Jul. 31, 2012

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The after-tax figures are shown for one share class only, and would be different for the other share class. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in the underlying funds.

[2] Manning & Napier Advisors, LLC (the “Advisor”) has contractually agreed to limit its fees and reimburse expenses to the extent necessary so that the total direct annual fund operating expenses of each Class, exclusive of the shareholder services fee, do not exceed 0.05% of such Class’s average daily net assets. This contractual waiver will continue until at least April 30, 2019 and may not be amended or terminated by the Advisor prior to such date without the prior approval of the Series’ Board of Directors. The Advisor’s agreement to limit each Class’s operating expenses is limited to direct operating expenses and, therefore, does not apply to AFFE, which are indirect expenses incurred by the Series through its investments in the underlying funds.

[1] Performance numbers for the Series and the Bloomberg Barclays US Intermediate Aggregate Bond Index are calculated from August 1, 2012, the Series’ inception date. Performance numbers for the 15/5/10/70 Blended Index are calculated from July 31, 2012.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

MANNING & NAPIER FUND, INC.

Prospectus Date

rr_ProspectusDate

May 01, 2018

Strategic Income Conservative Series

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Strategic Income Conservative Series

Summary Section

Objective [Heading]

rr_ObjectiveHeading

Investment Goal

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Series’ investment objective is to manage against capital risk and generate income with a

Objective, Secondary [Text Block]

rr_ObjectiveSecondaryTextBlock

secondary goal of pursuing long-term capital growth.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

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

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

STRATEGIC INCOME CONSERVATIVE SERIES

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund 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

April 30, 2019

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 21% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

21.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in the underlying funds.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same (taking into account the Advisor’s contractual expense limitation for the first year 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 Series is designed to generate income, pursue capital growth in order to provide purchasing power protection, and to manage risk. The Series seeks to achieve its investment objective by investing in a combination of other Series of the Manning & Napier Fund, Inc. and advised by the Advisor (the “underlying funds”) according to an asset allocation strategy. The Series may invest in a combination of the Core Bond Series, Disciplined Value Series, Equity Income Series, Global Fixed Income Series, High Yield Bond Series, Real Estate Series, and Unconstrained Bond Series, as well as other Series of the Fund.

As of March 31, 2018, the Series’ target allocation among the underlying funds was as follows:

Core Bond Series	52%
Disciplined Value Series	12%
Equity Income Series	11%
High Yield Bond Series	3%
Real Estate Series	8%
Unconstrained Bond Series	14%

The Core Bond Series will invest, under normal circumstances, at least 80% of its net assets in investment grade bonds and other financial instruments, primarily exchange-traded funds (ETFs), with economic characteristics similar to bonds. The Core Bond Series is not subject to any maturity or duration restrictions, but will vary its average dollar weighted portfolio maturity and duration depending on the Advisor’s outlook for yields. The Disciplined Value Series will, under normal circumstances, invest at least 80% of its assets in dividend-paying common stocks. In selecting stocks for the Disciplined Value Series, the Advisor uses a systematic process to identify stocks of U.S. companies that it believes are undervalued in the market, based on factors such as free cash flow generation and earnings power, and that meet other investment criteria relating to minimum dividend yield, dividend sustainability, and financial health. The Disciplined Value Series invests primarily in the common stocks of mid- to large- capitalization companies (generally companies with market capitalizations at the time of purchase within the market capitalization range of the companies comprising the Russell 1000^® Value Index). The Equity Income Series will invest, under normal circumstances, at least 80% of its net assets in equity securities. It invests primarily in income-producing equity securities. The Equity Income Series may invest in securities of small-, large- or mid-size companies, and it may also invest in interests in business development companies (BDCs) and limited partner interests in master limited partnerships (MLPs). The Equity Income Series may also invest in derivative instruments, as it may write (sell) options on securities. The Global Fixed Income Series will invest, under normal circumstances, at least 80% of its assets in fixed income securities. These securities may be issued by issuers located anywhere in the world, including emerging markets. Under normal circumstances, the Global Fixed Income Series will invest at least 40% of its net assets in securities issued by non-U.S. companies or non-U.S. governments, their agencies, or instrumentalities. The Global Fixed Income Series invests primarily in investment grade securities but may invest up to 20% of its assets in lower quality bonds, commonly known as “junk bonds,” The Global Fixed Income Series is not subject to any maturity or duration restrictions but will vary its average dollar-weighted portfolio maturity and duration depending on the Advisor’s outlook for yields and currency fluctuations. The High Yield Bond Series will invest, under normal circumstances, at least 80% of its net assets in bonds that are rated below investment grade (junk bonds) and other securities, primarily ETFs, that are designed to track the performance of non-investment grade securities. The High Yield Bond Series is not subject to any maturity or duration restrictions but will vary its average dollar weighted portfolio maturity and duration depending on the Advisor’s outlook for yields. The Real Estate Series will invest, under normal circumstances, at least 80% of its net assets in securities of companies that are principally engaged in the real estate industry. The Real Estate Series may invest in equity securities, including convertible securities, of small-, large-, or mid-size companies, and it may also invest in debt securities, typically investment grade debt securities. The Real Estate Series may also invest in derivative instruments, as it may write (sell) options on securities. The Unconstrained Bond Series will invest, under normal circumstances, at least 80% of its net assets in bonds and other financial instruments, principally derivative instruments and ETFs, with economic characteristics similar to bonds. The Unconstrained Bond Series is not subject to any maturity or duration restrictions but its average dollar-weighted portfolio duration will normally vary from negative 3 years to positive 8 years depending on the Advisor’s outlook for yields. The Unconstrained Bond Series may invest up to 50% of its assets in below investment grade securities (also referred to as “junk bonds”) and may invest up to 50% of its assets in non-U.S. dollar denominated securities, including securities issued by companies located in emerging markets. The Unconstrained Bond Series may also invest in derivative instruments, as it may invest in options, futures, forwards and swaps.

The Series is managed with a more conservative asset allocation than the Strategic Income Moderate Series. The asset allocation range for the Series is expected to be 15%-45% in the underlying stock funds and 55%-85% in the underlying bond funds.

The Series’ management team will actively adjust the Series’ allocation to the underlying funds in accordance with its investment goal and the Advisor’s view of prevailing market conditions, such as market trends, its outlook for a given asset class, and the underlying funds’ performance in various market conditions. Accordingly, the Series’ allocation to a particular underlying fund may increase or decrease throughout the year and the Series may have no allocation to a particular underlying fund during the year. At any given time, the Series’ allocation to the underlying funds may be affected by a number of factors, such as the performance of the underlying funds and the size and frequency of purchase and redemption orders.

Risk [Heading]

rr_RiskHeading

Principal Risks of Investing in the Series

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series.

Asset allocation risk — The Series is subject to asset allocation risk, which is the risk that the selection of the underlying funds and the allocation of the underlying funds' assets among the various asset classes and market segments will cause the Series to underperform other Series with a similar investment objective.

Market risk — Stock and bond markets rise and fall daily. As with any investment whose performance is tied to these markets, the value of your investment in the Series will fluctuate, which means that you could lose money on your investment.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series' shares. Redemptions by these institutions or individuals may impact the Series' liquidity and net asset value (NAV).

Principal Risks of the Underlying Funds

Through its investments in the underlying funds, the Series will be subject to the risks of those funds, which include the following:

Investment risk — The Series may experience losses with respect to its investment in an underlying fund. Further, there is no guarantee that an underlying fund will be able to achieve its objective.

Management risk — The underlying funds are actively managed mutual funds. Any actively managed mutual fund is subject to the risk that its investment advisor will make poor security selections. When making investment decisions for an underlying fund, the Advisor applies its own investment techniques and risk analyses, but there can be no guarantee that they will produce the desired results.

Because the Disciplined Value Series’ portfolio is selected using a systematic process, the Series is subject to the additional risk that the Advisor’s judgments regarding the investment criteria underlying the systematic process may prove to be incorrect. In addition, the Advisor's approach to value investing, or value investing in general, may go in and out of favor in the market.

Fixed income risk — The prices of an underlying fund’s fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. The lower the quality of the bonds, the greater this risk becomes. Current market conditions may pose heightened risks for the underlying funds. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the underlying funds. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, an underlying fund’s value may fluctuate and/or an underlying fund may experience increased redemptions from shareholders, which may impact an underlying fund’s liquidity or force an underlying fund to sell securities into a declining or illiquid market.

Convertible securities risk — An underlying fund’s investments in convertible securities are subject to interest rate risk and credit risk, which are described below. In addition, they are also subject to the risk that the price of the underlying common stock will go down, which may cause a proportionate (or disproportionate) decline in the price of the convertible security.

Risks related to ETFs — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio of securities. An underlying fund will also bear its proportionate share of the expenses of the purchased ETF in addition to its own expenses.

Interest rate risk — The risk that the value of fixed income securities, including U.S. Government securities, will fall due to rising interest rates. Longer-term bonds will experience greater fluctuations than shorter-term bonds in response to interest rate changes. Risks associated with rising rates are heightened given that interest rates in the U.S. are at, or near, historic lows.

Credit risk — The risk that the issuer of a security, or the counterparty to a contract, will default or otherwise become unable to honor a financial obligation. This risk is greater for junk bonds and other lower quality bonds.

Prepayment and extension risk — Fixed income securities may be paid off earlier or later than expected. Either situation could cause an underlying fund to hold securities paying lower-than-market rates of interest, which could hurt the fund’s yield or share price.

Mortgage- and asset-backed securities risks — The underlying funds’ investments in mortgage-backed and asset-backed securities may subject them to the following additional risks:

• Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations.

• Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities, and asset-backed securities may not have the benefit of any security interest in the related assets.

Equity risk — The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

Large-cap risk — Large-cap stocks tend to go in and out of favor based on market and economic conditions. During a period when large-cap stocks fall behind other types of investments — small-cap stocks, for instance — an underlying fund’s performance could be reduced to the extent its portfolio is holding large-cap stocks.

Small- and mid-cap risk — Historically, small- and mid-cap stocks have been riskier than large-cap stocks. Stock prices of smaller companies may be based in substantial part on future expectations rather than current achievements and may move sharply, especially during market upturns and downturns. Small- and mid-cap companies themselves may be more vulnerable to adverse business or economic events than larger, more established companies. Investments in small- and mid-cap stocks are also subject to liquidity risk, which is described below.

Foreign investment risk — An underlying fund’s investments in securities of foreign issuers may involve certain risks that are greater than those associated with investments in securities of U.S. issuers. These include risks of adverse changes in foreign economic, political, regulatory and other conditions; changes in currency exchange rates or exchange control regulations (including limitations on currency movements and exchanges); differing accounting, auditing, financial reporting and legal standards and practices; differing securities market structures; and higher transaction costs. These risks may be heightened in connection with investments in emerging markets.

Real estate securities risk — An underlying fund’s holdings in securities of issuers in the real estate industry, including investments in real estate investment trusts (REITs) and real estate operating companies (REOCs), may subject it to additional risks even though the underlying fund does not invest directly in real estate. These risks include, but are not limited to, the following: fluctuations in the value of real estate properties and interest rates, defaults by borrowers or tenants, extended vacancies and declining rents, a lack of ability to obtain mortgage financing or other limits to accessing the credit or capital markets, increased competition and overbuilding and increases in real estate or operating taxes. Any geographic concentration of an underlying fund’s real estate related investments could result in the underlying fund being subject to the above risks to a greater degree. In addition, REITs and REOCs have their own expenses, and an underlying fund that invests in REITs and REOCs will bear a proportionate share of those expenses.

High-yield securities risk — An underlying fund’s investments in high-yield securities (junk bonds) may subject it to the following additional risks:

• High-yield securities may underperform other sectors of the bond market, or the market as a whole.

• The performance of high-yield securities tends to be more volatile than that of other sectors of the bond market.

• Given the total size of the high-yield securities market, high-yield securities can be less liquid than investment grade securities.

• An underlying fund’s investments in high-yield securities will subject it to a substantial degree of credit risk because the prospect for repayment of principal and interest of many of these bonds is speculative.

Non-diversification risk — Certain of the underlying funds are non-diversified, which means that they may invest in the securities of relatively few issuers. As a result, an underlying fund may be susceptible to a single adverse economic, political or regulatory occurrence affecting one or more of those issuers, and may experience increased volatility due to its investments in those securities.

Risks of investing in BDCs — An underlying fund's investments in BDCs are subject to additional risks. BDCs generally invest in less mature private companies or thinly traded U.S. public companies which involve greater risk than well-established publicly-traded companies. Generally, little public information exists for the companies in which a BDC may invest and there is a risk that investors in the BDC may not be able to make a fully informed evaluation of a BDC and its portfolio of investments. An underlying fund will indirectly bear its proportionate share of any management and other operating expenses and of any performance based or incentive fees charged by the BDCs in which it invests, in addition to the expenses paid by the underlying fund.

Risks of investing in MLPs — An underlying fund's investments in MLPs are subject to additional risks. MLPs often own several properties or businesses (or other interests) that are related to oil and gas industries or other natural resources, but they also may finance other projects. To the extent that an MLP’s interests are all in a particular industry, the MLP will be negatively impacted by economic events adversely impacting that industry. There may be fewer protections afforded to investors in a MLP than investors in a corporation. For example, investors in MLPs may have limited voting rights or be liable under certain circumstances for amounts greater than the amount of their investment. Additional risks involved with investing in a MLP are risks associated with the specific industry or industries in which the partnership invests, such as the risks of investing in real estate, or oil and gas industries.

Derivatives risk — An underlying fund is subject to the following risks due to its ability to invest in options, futures, forwards and swaps:

• Derivatives can be extremely sensitive to changes in the market value of the underlying investment, and changes in the value of a derivative contract may not correlate perfectly with the underlying investment.

• An underlying fund may not be able to receive amounts payable to it under its derivatives contracts as quickly as it may be able to sell or otherwise obtain payments from other investments, so the underlying fund’s investments in such contracts may not be as liquid as the underlying fund’s other investments.

• An underlying fund’s use of forwards and swaps is also subject to the risk that the counterparty to the contract will default or otherwise become unable to honor its obligation to the underlying fund.

Sector focus risk — Because an underlying fund's investments may, from time to time, be more heavily invested in a particular sector or sectors, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those sectors. As a result, an underlying fund's share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of sectors.

Liquidity risk — A particular investment may be difficult to purchase or sell. An underlying fund may be unable to sell illiquid securities at an advantageous time or price.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of an underlying fund’s shares. Redemptions by these institutions or individuals in an underlying fund may impact the underlying fund’s liquidity and net asset value (NAV).

The risks above could contribute to a decline in the value of the investments of the Series and/or the underlying funds and, consequently, the share price of the Series.

Risk Lose Money [Text]

rr_RiskLoseMoney

You could lose money by investing in the Series.

Risk Nondiversified Status [Text]

rr_RiskNondiversifiedStatus

Non-diversification risk — Certain of the underlying funds are non-diversified, which means that they may invest in the securities of relatively few issuers. As a result, an underlying fund may be susceptible to a single adverse economic, political or regulatory occurrence affecting one or more of those issuers, and may experience increased volatility due to its investments in those securities.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Summary of Past Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the performance of the Class S shares of the Series for each full calendar year since its inception. The total return table shows how the average annual total returns for the Class S and Class I shares of the Series for different periods compare to those of a broad-based securities index, as well as a 15/5/10/70 Blended Index, 15% of which is the Russell 3000^® Value Index, 5% of which is the MSCI ACWI ex USA Index, 10% of which is the MSCI U.S. Real Estate Investment Trust Index, and 70% of which is the Bloomberg Barclays U.S. Aggregate Bond Index. The 15/5/10/70 Blended Index is provided because it better reflects the asset allocation of the Series as compared to the broad-based index. Because the Series' asset allocation will vary over time, the composition of the Series' portfolio may not match the composition of the comparative indices' portfolios. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart shows the performance of the Class S shares of the Series for each full calendar year since its inception. The total return table shows how the average annual total returns for the Class S and Class I shares of the Series for different periods compare to those of a broad-based securities index, as well as a 15/5/10/70 Blended Index, 15% of which is the Russell 3000^® Value Index, 5% of which is the MSCI ACWI ex USA Index, 10% of which is the MSCI U.S. Real Estate Investment Trust Index, and 70% of which is the Bloomberg Barclays U.S. Aggregate Bond Index.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The total return table shows how the average annual total returns for the Class S and Class I shares of the Series for different periods compare to those of a broad-based securities index, as well as a 15/5/10/70 Blended Index, 15% of which is the Russell 3000^® Value Index, 5% of which is the MSCI ACWI ex USA Index, 10% of which is the MSCI U.S. Real Estate Investment Trust Index, and 70% of which is the Bloomberg Barclays U.S. Aggregate Bond Index. The 15/5/10/70 Blended Index is provided because it better reflects the asset allocation of the Series as compared to the broad-based index.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.manning-napier.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Calendar Years Ended December 31

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Quarterly Returns
Highest (quarter ended 06/30/14): 3.50%
Lowest (quarter ended 06/30/13): (2.08)%

Performance Table Heading

rr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS
FOR PERIODS ENDED DECEMBER 31, 2017

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

After-tax returns are not relevant to investors who hold their Series 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

The after-tax figures are shown for one share class only, and would be different for the other share class.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The after-tax figures are shown for one share class only, and would be different for the other share class. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Strategic Income Conservative Series | CLASS I

Risk/Return:

rr_RiskReturnAbstract

Shareholder Fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management Fee

rr_ManagementFeesOverAssets

none

Distribution (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Services Fee

rr_Component1OtherExpensesOverAssets

none

Remainder of Other Expenses

rr_Component2OtherExpensesOverAssets

0.51%

Other Expenses

rr_OtherExpensesOverAssets

0.51%

Acquired Fund Fees and Expenses (AFFE)

rr_AcquiredFundFeesAndExpensesOverAssets

0.54%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.05%

^[1]

Less Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.46%)

^[2]

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

0.59%

^[1]

AFTER 1 YEAR

rr_ExpenseExampleYear01

$ 60

AFTER 3 YEARS

rr_ExpenseExampleYear03

288

AFTER 5 YEARS

rr_ExpenseExampleYear05

535

AFTER 10 YEARS

rr_ExpenseExampleYear10

$ 1,241

1 Year

rr_AverageAnnualReturnYear01

7.33%

5 Years

rr_AverageAnnualReturnYear05

5.17%

Since Inception

rr_AverageAnnualReturnSinceInception

5.35%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 01, 2012

Strategic Income Conservative Series | CLASS S

Risk/Return:

rr_RiskReturnAbstract

Shareholder Fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management Fee

rr_ManagementFeesOverAssets

none

Distribution (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Services Fee

rr_Component1OtherExpensesOverAssets

0.25%

Remainder of Other Expenses

rr_Component2OtherExpensesOverAssets

0.51%

Other Expenses

rr_OtherExpensesOverAssets

0.76%

Acquired Fund Fees and Expenses (AFFE)

rr_AcquiredFundFeesAndExpensesOverAssets

0.54%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.30%

^[1]

Less Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.46%)

^[2]

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

0.84%

^[1]

AFTER 1 YEAR

rr_ExpenseExampleYear01

$ 86

AFTER 3 YEARS

rr_ExpenseExampleYear03

367

AFTER 5 YEARS

rr_ExpenseExampleYear05

669

AFTER 10 YEARS

rr_ExpenseExampleYear10

$ 1,527

2013

rr_AnnualReturn2013

4.96%

2014

rr_AnnualReturn2014

6.30%

2015

rr_AnnualReturn2015

0.08%

2016

rr_AnnualReturn2016

6.12%

2017

rr_AnnualReturn2017

7.17%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2014

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

3.50%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2013

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(2.08%)

1 Year

rr_AverageAnnualReturnYear01

7.17%

5 Years

rr_AverageAnnualReturnYear05

4.89%

Since Inception

rr_AverageAnnualReturnSinceInception

5.10%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 01, 2012

Strategic Income Conservative Series | Return After Taxes on Distributions | CLASS S

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

6.07%

5 Years

rr_AverageAnnualReturnYear05

3.44%

Since Inception

rr_AverageAnnualReturnSinceInception

3.62%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 01, 2012

Strategic Income Conservative Series | Return After Taxes on Distributions and Sale of Series Shares | CLASS S

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

4.29%

5 Years

rr_AverageAnnualReturnYear05

3.26%

Since Inception

rr_AverageAnnualReturnSinceInception

3.43%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 01, 2012

Strategic Income Conservative Series | Bloomberg Barclays US Intermediate Aggregate Bond Index (reflect no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

2.27%

5 Years

rr_AverageAnnualReturnYear05

1.70%

Since Inception

rr_AverageAnnualReturnSinceInception

1.70%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 01, 2012

Strategic Income Conservative Series | 15/5/10/70 Blended Index (reflect no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

6.09%

5 Years

rr_AverageAnnualReturnYear05

4.78%

Since Inception

rr_AverageAnnualReturnSinceInception

4.82%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 31, 2012

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in the underlying funds.

[2] Manning & Napier Advisors, LLC (the “Advisor”) has contractually agreed to limit its fees and reimburse expenses to the extent necessary so that the total direct annual fund operating expenses of each Class, exclusive of the shareholder services fee, do not exceed 0.05% of such Class’s average daily net assets. This contractual waiver will continue until at least April 30, 2019 and may not be amended or terminated by the Advisor prior to such date without the prior approval of the Series’ Board of Directors. The Advisor’s agreement to limit each Class’s operating expenses is limited to direct operating expenses and, therefore, does not apply to AFFE, which are indirect expenses incurred by the Series through its investments in the underlying funds.

[3] Performance numbers for the Series and the Bloomberg Barclays US Intermediate Aggregate Bond Index are calculated from August 1, 2012, the Series’ inception date. Performance numbers for the 15/5/10/70 Blended Index are calculated from July 31, 2012.

XML

Strategic Income Moderate Series

Strategic Income Moderate Series

Summary Section

Investment Goal

The Series’ investment objective is to manage against capital risk while generating income and pursuing long-term capital growth.

Fees and Expenses

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

STRATEGIC INCOME MODERATE SERIES

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees - Strategic Income Moderate Series - USD ($)	CLASS I	CLASS S
Shareholder Fees (fees paid directly from your investment)	none	none

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

Annual Fund Operating Expenses - Strategic Income Moderate Series		CLASS I	CLASS S
Management Fee		none	none
Distribution (12b-1) Fees		none	none
Other Expenses		0.43%	0.68%
Shareholder Services Fee		none	0.25%
Remainder of Other Expenses		0.43%	0.43%
Acquired Fund Fees and Expenses (AFFE)		0.59%	0.59%
Total Annual Fund Operating Expenses	[1]	1.02%	1.27%
Less Fee Waiver and/or Expense Reimbursement	[2]	(0.38%)	(0.38%)
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1]	0.64%	0.89%

Example

The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same (taking into account the Advisor’s contractual expense limitation for the first year only). Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example - Strategic Income Moderate Series - USD ($)	AFTER 1 YEAR	AFTER 3 YEARS	AFTER 5 YEARS	AFTER 10 YEARS
CLASS I	65	287	526	1,213
CLASS S	91	365	660	1,501

Portfolio Turnover

The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 12% of the average value of its portfolio.

Principal Investment Strategies

The Series is designed to generate income, pursue capital growth in order to provide purchasing power protection, and to manage risk. The Series seeks to achieve its investment objective by investing in a combination of other Series of the Manning & Napier Fund, Inc. and advised by the Advisor (the “underlying funds”) according to an asset allocation strategy. The Series may invest in a combination of the Core Bond Series, Disciplined Value Series, Equity Income Series, Global Fixed Income Series, High Yield Bond Series, Real Estate Series, and Unconstrained Bond Series, as well as other Series of the Fund.

As of March 31, 2018, the Series’ target allocation among the underlying funds was as follows:

Core Bond Series	34%
Disciplined Value Series	22%
Equity Income Series	21%
High Yield Bond Series	5%
Real Estate Series	8%
Unconstrained Bond Series	10%

The Core Bond Series will invest, under normal circumstances, at least 80% of its net assets in investment grade bonds and other financial instruments, primarily exchange-traded funds (ETFs), with economic characteristics similar to bonds. The Core Bond Series is not subject to any maturity or duration restrictions, but will vary its average dollar weighted portfolio maturity and duration depending on the Advisor's outlook for yields. The Disciplined Value Series will, under normal circumstances, invest at least 80% of its assets in dividend-paying common stocks. In selecting stocks for the Disciplined Value Series, the Advisor uses a systematic process to identify stocks of U.S. companies that it believes are undervalued in the market, based on factors such as free cash flow generation and earnings power, and that meet other investment criteria relating to minimum dividend yield, dividend sustainability, and financial health. The Disciplined Value Series invests primarily in the common stocks of mid- to large- capitalization companies (generally companies with market capitalizations at the time of purchase within the market capitalization range of the companies comprising the Russell 1000® Value Index). The Equity Income Series will invest, under normal circumstances, at least 80% of its net assets in equity securities. It invests primarily in income-producing equity securities. The Equity Income Series may invest in securities of small, large or mid-size companies, and it may also invest in interests in business development companies (BDCs) and limited partner interests in master limited partnerships (MLPs). The Equity Income Series may also invest in derivative instruments, as it may write (sell) options on securities. The Global Fixed Income Series will invest, under normal circumstances, at least 80% of its assets in fixed income securities. These securities may be issued by issuers located anywhere in the world, including emerging markets. Under normal circumstances, the Global Fixed Income Series will invest at least 40% of its net assets in securities issued by non-U.S. companies or non-U.S. governments, their agencies, or instrumentalities. The Global Fixed Income Series invests primarily in investment grade securities but may invest up to 20% of its assets in lower quality bonds, commonly known as "junk bonds," The Global Fixed Income Series is not subject to any maturity or duration restrictions but will vary its average dollar-weighted portfolio maturity and duration depending on the Advisor's outlook for yields and currency fluctuations. The High Yield Bond Series will invest, under normal circumstances, at least 80% of its net assets in bonds that are rated below investment grade (junk bonds) and other securities, primarily ETFs, that are designed to track the performance of non-investment grade securities. The High Yield Bond Series is not subject to any maturity or duration restrictions but will vary its average dollar weighted portfolio maturity and duration depending on the Advisor’s outlook for yields. The Real Estate Series will invest, under normal circumstances, at least 80% of its net assets in securities of companies that are principally engaged in the real estate industry. The Real Estate Series may invest in equity securities, including convertible securities, of small-, large-, or mid-size companies, and it may also invest in debt securities, typically investment grade securities. The Real Estate Series may also invest in derivative instruments, as it may write (sell) options on securities. The Unconstrained Bond Series will invest, under normal circumstances, at least 80% of its net assets in bonds and other financial instruments, principally derivative instruments and ETFs, with economic characteristics similar to bonds. The Unconstrained Bond Series is not subject to any maturity or duration restrictions but its average dollar-weighted portfolio duration will normally vary from negative 3 years to positive 8 years depending on the Advisor’s outlook for yields. The Unconstrained Bond Series may invest up to 50% of its assets in below investment grade securities (also referred to as “junk bonds”) and may invest up to 50% of its assets in non-U.S. dollar denominated securities, including securities issued by companies located in emerging markets. The Unconstrained Bond Series may also invest in derivative instruments, as it may invest in options, futures, forwards and swaps.

The Series is managed with a less conservative asset allocation than the Strategic Income Conservative Series. The asset allocation range for the Series is expected to be 35%-65% in the underlying stock funds and 35%-65% in the underlying bond funds.

The Series’ management team will actively adjust the Series’ allocation to the underlying funds in accordance with its investment goal and the Advisor’s view of prevailing market conditions, such as market trends, its outlook for a given asset class, and the underlying funds’ performance in various market conditions. Accordingly, the Series’ allocation to a particular underlying fund may increase or decrease throughout the year and the Series may have no allocation to a particular underlying fund during the year. At any given time, the Series’ allocation to the underlying funds may be affected by a number of factors, such as the performance of the underlying funds and the size and frequency of purchase and redemption orders.

Principal Risks of Investing in the Series

As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series.

Asset allocation risk — The Series is subject to asset allocation risk, which is the risk that the selection of the underlying funds and the allocation of the underlying funds' assets among the various asset classes and market segments will cause the Series to underperform other Series with a similar investment objective.

Market risk — Stock and bond markets rise and fall daily. As with any investment whose performance is tied to these markets, the value of your investment in the Series will fluctuate, which means that you could lose money on your investment.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series' shares. Redemptions by these institutions or individuals may impact the Series' liquidity and net asset value (NAV).

Principal Risks of the Underlying Funds

Through its investments in the underlying funds, the Series will be subject to the risks of those funds, which include the following:

Investment risk — The Series may experience losses with respect to its investment in an underlying fund. Further, there is no guarantee that an underlying fund will be able to achieve its objective.

Management risk — The underlying funds are actively managed mutual funds. Any actively managed mutual fund is subject to the risk that its investment advisor will make poor security selections. When making investment decisions for an underlying fund, the Advisor applies its own investment techniques and risk analyses, but there can be no guarantee that they will produce the desired results.

Because the Disciplined Value Series’ portfolio is selected using a systematic process, the Series is subject to the additional risk that the Advisor’s judgments regarding the investment criteria underlying the systematic process may prove to be incorrect. In addition, the Advisor's approach to value investing, or value investing in general, may go in and out of favor in the market.

Fixed income risk — The prices of an underlying fund’s fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. The lower the quality of the bonds, the greater this risk becomes. Current market conditions may pose heightened risks for the underlying funds. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the underlying funds. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, an underlying fund’s value may fluctuate and/or an underlying fund may experience increased redemptions from shareholders, which may impact an underlying fund’s liquidity or force an underlying fund to sell securities into a declining or illiquid market.

Convertible securities risk — An underlying fund’s investments in convertible securities are subject to interest rate risk and credit risk, which are described below. In addition, they are also subject to the risk that the price of the underlying common stock will go down, which may cause a proportionate (or disproportionate) decline in the price of the convertible security.

Risks related to ETFs — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio of securities. An underlying fund will also bear its proportionate share of the expenses of the purchased ETF in addition to its own expenses.

Interest rate risk — The risk that the value of fixed income securities, including U.S. Government securities, will fall due to rising interest rates. Longer-term bonds will experience greater fluctuations than shorter-term bonds in response to interest rate changes. Risks associated with rising rates are heightened given that interest rates in the U.S. are at, or near, historic lows.

Credit risk — The risk that the issuer of a security, or the counterparty to a contract, will default or otherwise become unable to honor a financial obligation. This risk is greater for junk bonds and other lower quality bonds.

Prepayment and extension risk — Fixed income securities may be paid off earlier or later than expected. Either situation could cause an underlying fund to hold securities paying lower-than-market rates of interest, which could hurt the fund’s yield or share price.

Mortgage- and asset-backed securities risks — The underlying funds’ investments in mortgage-backed and asset-backed securities may subject them to the following additional risks:

• Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations.

• Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities, and asset-backed securities may not have the benefit of any security interest in the related assets.

Equity risk — The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

Large-cap risk — Large-cap stocks tend to go in and out of favor based on market and economic conditions. During a period when large-cap stocks fall behind other types of investments — small-cap stocks, for instance — an underlying fund’s performance could be reduced to the extent its portfolio is holding large-cap stocks.

Small- and mid-cap risk — Historically, small- and mid-cap stocks have been riskier than large-cap stocks. Stock prices of smaller companies may be based in substantial part on future expectations rather than current achievements and may move sharply, especially during market upturns and downturns. Small- and mid-cap companies themselves may be more vulnerable to adverse business or economic events than larger, more established companies. Investments in small- and mid-cap stocks are also subject to liquidity risk, which is described below.

Foreign investment risk — An underlying fund’s investments in securities of foreign issuers may involve certain risks that are greater than those associated with investments in securities of U.S. issuers. These include risks of adverse changes in foreign economic, political, regulatory and other conditions; changes in currency exchange rates or exchange control regulations (including limitations on currency movements and exchanges); differing accounting, auditing, financial reporting and legal standards and practices; differing securities market structures; and higher transaction costs.

Emerging markets risk — In addition to the risks discussed above relating to investments in foreign companies located in developed countries, an underlying fund’s investments in emerging market countries are subject to the following risks:

• Emerging markets may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries.

• Emerging market countries often have less uniformity in accounting and reporting requirements and unreliable securities valuation.

• It is sometimes difficult to obtain and enforce court judgments in emerging market countries and there is often a greater potential for nationalization and/or expropriation of assets by the government of an emerging market country.

• There will tend to be an increased risk of price volatility associated with the Series’ investments in emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

Real estate securities risk — An underlying fund’s holdings in securities of issuers in the real estate industry, including investments in real estate investment trusts (REITs) and real estate operating companies (REOCs) may subject it to additional risks even though the underlying fund does not invest directly in real estate. These risks include, but are not limited to, the following: fluctuations in the value of real estate properties and interest rates, defaults by borrowers or tenants, extended vacancies and declining rents, a lack of ability to obtain mortgage financing or other limits to accessing the credit or capital markets, increased competition and overbuilding and increases in real estate or operating taxes. Any geographic concentration of an underlying fund’s real estate related investments could result in the underlying fund being subject to the above risks to a greater degree. In addition, REITs and REOCs have their own expenses, and an underlying fund that invests in REITs and REOCs will bear a proportionate share of those expenses.

High-yield securities risk — An underlying fund’s investments in high-yield securities (junk bonds) may subject it to the following additional risks:

• High-yield securities may underperform other sectors of the bond market, or the market as a whole.

• The performance of high-yield securities tends to be more volatile than that of other sectors of the bond market.

• Given the total size of the high-yield securities market, high-yield securities can be less liquid than investment grade securities.

• An underlying fund’s investments in high-yield securities will subject it to a substantial degree of credit risk because the prospect for repayment of principal and interest of many of these bonds is speculative.

Non-diversification risk — Certain of the underlying funds are non-diversified, which means that they may invest in the securities of relatively few issuers. As a result, an underlying fund may be susceptible to a single adverse economic, political or regulatory occurrence affecting one or more of those issuers, and may experience increased volatility due to its investments in those securities.

Risks of investing in BDCs — An underlying fund's investments in BDCs are subject to additional risks. BDCs generally invest in less mature private companies or thinly traded U.S. public companies which involve greater risk than well-established publicly-traded companies. Generally, little public information exists for the companies in which a BDC may invest and there is a risk that investors in the BDC may not be able to make a fully informed evaluation of a BDC and its portfolio of investments. An underlying fund will indirectly bear its proportionate share of any management and other operating expenses and of any performance based or incentive fees charged by the BDCs in which it invests, in addition to the expenses paid by the underlying fund.

Risks of investing in MLPs — An underlying fund's investments in MLPs are subject to additional risks. MLPs often own several properties or businesses (or other interests) that are related to oil and gas industries or other natural resources, but they also may finance other projects. To the extent that an MLP’s interests are all in a particular industry, the MLP will be negatively impacted by economic events adversely impacting that industry. There may be fewer protections afforded to investors in a MLP than investors in a corporation. For example, investors in MLPs may have limited voting rights or be liable under certain circumstances for amounts greater than the amount of their investment. Additional risks involved with investing in a MLP are risks associated with the specific industry or industries in which the partnership invests, such as the risks of investing in real estate, or oil and gas industries.

Derivatives risk — An underlying fund is subject to the following risks due to its ability to invest in options, futures, forwards and swaps:

• Derivatives can be extremely sensitive to changes in the market value of the underlying investment, and changes in the value of a derivative contract may not correlate perfectly with the underlying investment.

• An underlying fund may not be able to receive amounts payable to it under its derivatives contracts as quickly as it may be able to sell or otherwise obtain payments from other investments, so the underlying fund’s investments in such contracts may not be as liquid as the underlying fund’s other investments.

• An underlying fund’s use of forwards and swaps is also subject to the risk that the counterparty to the contract will default or otherwise become unable to honor its obligation to the underlying fund.

Sector focus risk — Because an underlying fund's investments may, from time to time, be more heavily invested in a particular sector or sectors, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those sectors. As a result, an underlying fund's share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of sectors.

Liquidity risk — A particular investment may be difficult to purchase or sell. An underlying fund may be unable to sell illiquid securities at an advantageous time or price.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of an underlying fund’s shares. Redemptions by these institutions or individuals in an underlying fund may impact the underlying fund’s liquidity and net asset value (NAV).

The risks above could contribute to a decline in the value of the investments of the Series and/or the underlying funds and, consequently, the share price of the Series.

Summary of Past Performance

The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the performance of the Class S shares of the Series for each full calendar year since its inception. The total return table shows how the average annual total returns for the Class S and Class I shares of the Series for different periods compare to those of a broad-based securities index and a blended index. For the period from August 1, 2012 through September 30, 2013, the Strategic Income Moderate Benchmark consists of the Russell 3000^® Value Index (40%), MSCI ACWI ex USA Index (10%), MSCI U.S. Real Estate Investment Trust Index (10%), and Bloomberg Barclays U.S. Aggregate Bond Index (40%). For the period beginning October 1, 2013, the Strategic Income Moderate Benchmark consists of the Russell 3000^® Value Index (32%), MSCI ACWI ex USA Index (8%), MSCI U.S. Real Estate Investment Trust Index (10%), and Bloomberg Barclays U.S. Aggregate Bond Index (50%) to reflect a change in the target allocation of the Series. The Strategic Income Moderate Benchmark is provided because it better reflects the asset allocation of the Series as compared to the broad-based index. Because the Series’ asset allocation will vary over time the composition of the Series’ portfolio may not match the composition of the comparative indices’ portfolios. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.

Calendar Years Ended December 31

Quarterly Returns
Highest (quarter ended 03/31/13): 5.92%
Lowest (quarter ended 09/30/15): (3.73)%

AVERAGE ANNUAL TOTAL RETURNS
FOR PERIODS ENDED DECEMBER 31, 2017

Average Annual Total Returns - Strategic Income Moderate Series	1 Year	5 Years	Since Inception	[1]	Inception Date
Class S Shares	10.39%	7.23%	7.28%		Aug. 01, 2012
Class S Shares | Return After Taxes on Distributions	9.12%	5.62%	5.67%		Aug. 01, 2012
Class S Shares | Return After Taxes on Distributions and Sale of Series Shares	6.36%	5.13%	5.18%		Aug. 01, 2012
Class I Shares	10.67%	7.48%	7.53%		Aug. 01, 2012
Bloomberg Barclays US Aggregate Bond Index (reflect no deduction for fees, expenses, or taxes)	3.54%	2.10%	2.05%		Aug. 01, 2012
Strategic Income Moderate Benchmark (reflect no deduction for fees, expenses, or taxes)	8.40%	6.95%	7.11%		Jul. 31, 2012

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The after-tax figures are shown for one share class only, and would be different for the other share class. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in the underlying funds.

[2] Manning & Napier Advisors, LLC (the “Advisor”) has contractually agreed to limit its fees and reimburse expenses to the extent necessary so that the total direct annual fund operating expenses of each Class, exclusive of the shareholder services fee, do not exceed 0.05% of such Class’s average daily net assets. This contractual waiver will continue until at least April 30, 2019 and may not be amended or terminated by the Advisor prior to such date without the prior approval of the Series’ Board of Directors. The Advisor’s agreement to limit each Class’s operating expenses is limited to direct operating expenses and, therefore, does not apply to AFFE, which are indirect expenses incurred by the Series through its investments in the underlying funds.

[1] Performance numbers for the Series and the Bloomberg Barclays US Aggregate Bond Index are calculated from August 1, 2012, the Series' inception date. Performance numbers for the Strategic Income Moderate Benchmark are calculated from July 31, 2012.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

MANNING & NAPIER FUND, INC.

Prospectus Date

rr_ProspectusDate

May 01, 2018

Strategic Income Moderate Series

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Strategic Income Moderate Series

Summary Section

Objective [Heading]

rr_ObjectiveHeading

Investment Goal

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Series’ investment objective is to manage against capital risk while generating income and pursuing long-term capital growth.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

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

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

STRATEGIC INCOME MODERATE SERIES

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund 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

April 30, 2019

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Series pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Series shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the performance of the Series. During the most recent fiscal year, the portfolio turnover rate of the Series was 12% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

12.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in the underlying funds.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

The Example below is intended to help you compare the cost of investing in the Series with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Series for the time periods indicated and then 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 Series’ operating expenses remain the same (taking into account the Advisor’s contractual expense limitation for the first year 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 Series is designed to generate income, pursue capital growth in order to provide purchasing power protection, and to manage risk. The Series seeks to achieve its investment objective by investing in a combination of other Series of the Manning & Napier Fund, Inc. and advised by the Advisor (the “underlying funds”) according to an asset allocation strategy. The Series may invest in a combination of the Core Bond Series, Disciplined Value Series, Equity Income Series, Global Fixed Income Series, High Yield Bond Series, Real Estate Series, and Unconstrained Bond Series, as well as other Series of the Fund.

As of March 31, 2018, the Series’ target allocation among the underlying funds was as follows:

Core Bond Series	34%
Disciplined Value Series	22%
Equity Income Series	21%
High Yield Bond Series	5%
Real Estate Series	8%
Unconstrained Bond Series	10%

The Core Bond Series will invest, under normal circumstances, at least 80% of its net assets in investment grade bonds and other financial instruments, primarily exchange-traded funds (ETFs), with economic characteristics similar to bonds. The Core Bond Series is not subject to any maturity or duration restrictions, but will vary its average dollar weighted portfolio maturity and duration depending on the Advisor's outlook for yields. The Disciplined Value Series will, under normal circumstances, invest at least 80% of its assets in dividend-paying common stocks. In selecting stocks for the Disciplined Value Series, the Advisor uses a systematic process to identify stocks of U.S. companies that it believes are undervalued in the market, based on factors such as free cash flow generation and earnings power, and that meet other investment criteria relating to minimum dividend yield, dividend sustainability, and financial health. The Disciplined Value Series invests primarily in the common stocks of mid- to large- capitalization companies (generally companies with market capitalizations at the time of purchase within the market capitalization range of the companies comprising the Russell 1000® Value Index). The Equity Income Series will invest, under normal circumstances, at least 80% of its net assets in equity securities. It invests primarily in income-producing equity securities. The Equity Income Series may invest in securities of small, large or mid-size companies, and it may also invest in interests in business development companies (BDCs) and limited partner interests in master limited partnerships (MLPs). The Equity Income Series may also invest in derivative instruments, as it may write (sell) options on securities. The Global Fixed Income Series will invest, under normal circumstances, at least 80% of its assets in fixed income securities. These securities may be issued by issuers located anywhere in the world, including emerging markets. Under normal circumstances, the Global Fixed Income Series will invest at least 40% of its net assets in securities issued by non-U.S. companies or non-U.S. governments, their agencies, or instrumentalities. The Global Fixed Income Series invests primarily in investment grade securities but may invest up to 20% of its assets in lower quality bonds, commonly known as "junk bonds," The Global Fixed Income Series is not subject to any maturity or duration restrictions but will vary its average dollar-weighted portfolio maturity and duration depending on the Advisor's outlook for yields and currency fluctuations. The High Yield Bond Series will invest, under normal circumstances, at least 80% of its net assets in bonds that are rated below investment grade (junk bonds) and other securities, primarily ETFs, that are designed to track the performance of non-investment grade securities. The High Yield Bond Series is not subject to any maturity or duration restrictions but will vary its average dollar weighted portfolio maturity and duration depending on the Advisor’s outlook for yields. The Real Estate Series will invest, under normal circumstances, at least 80% of its net assets in securities of companies that are principally engaged in the real estate industry. The Real Estate Series may invest in equity securities, including convertible securities, of small-, large-, or mid-size companies, and it may also invest in debt securities, typically investment grade securities. The Real Estate Series may also invest in derivative instruments, as it may write (sell) options on securities. The Unconstrained Bond Series will invest, under normal circumstances, at least 80% of its net assets in bonds and other financial instruments, principally derivative instruments and ETFs, with economic characteristics similar to bonds. The Unconstrained Bond Series is not subject to any maturity or duration restrictions but its average dollar-weighted portfolio duration will normally vary from negative 3 years to positive 8 years depending on the Advisor’s outlook for yields. The Unconstrained Bond Series may invest up to 50% of its assets in below investment grade securities (also referred to as “junk bonds”) and may invest up to 50% of its assets in non-U.S. dollar denominated securities, including securities issued by companies located in emerging markets. The Unconstrained Bond Series may also invest in derivative instruments, as it may invest in options, futures, forwards and swaps.

The Series is managed with a less conservative asset allocation than the Strategic Income Conservative Series. The asset allocation range for the Series is expected to be 35%-65% in the underlying stock funds and 35%-65% in the underlying bond funds.

The Series’ management team will actively adjust the Series’ allocation to the underlying funds in accordance with its investment goal and the Advisor’s view of prevailing market conditions, such as market trends, its outlook for a given asset class, and the underlying funds’ performance in various market conditions. Accordingly, the Series’ allocation to a particular underlying fund may increase or decrease throughout the year and the Series may have no allocation to a particular underlying fund during the year. At any given time, the Series’ allocation to the underlying funds may be affected by a number of factors, such as the performance of the underlying funds and the size and frequency of purchase and redemption orders.

Risk [Heading]

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Principal Risks of Investing in the Series

Risk Narrative [Text Block]

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As with all mutual funds, there is no guarantee that the Series will achieve its investment objective. You could lose money by investing in the Series.

Asset allocation risk — The Series is subject to asset allocation risk, which is the risk that the selection of the underlying funds and the allocation of the underlying funds' assets among the various asset classes and market segments will cause the Series to underperform other Series with a similar investment objective.

Market risk — Stock and bond markets rise and fall daily. As with any investment whose performance is tied to these markets, the value of your investment in the Series will fluctuate, which means that you could lose money on your investment.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of the Series' shares. Redemptions by these institutions or individuals may impact the Series' liquidity and net asset value (NAV).

Principal Risks of the Underlying Funds

Through its investments in the underlying funds, the Series will be subject to the risks of those funds, which include the following:

Investment risk — The Series may experience losses with respect to its investment in an underlying fund. Further, there is no guarantee that an underlying fund will be able to achieve its objective.

Management risk — The underlying funds are actively managed mutual funds. Any actively managed mutual fund is subject to the risk that its investment advisor will make poor security selections. When making investment decisions for an underlying fund, the Advisor applies its own investment techniques and risk analyses, but there can be no guarantee that they will produce the desired results.

Because the Disciplined Value Series’ portfolio is selected using a systematic process, the Series is subject to the additional risk that the Advisor’s judgments regarding the investment criteria underlying the systematic process may prove to be incorrect. In addition, the Advisor's approach to value investing, or value investing in general, may go in and out of favor in the market.

Fixed income risk — The prices of an underlying fund’s fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. The lower the quality of the bonds, the greater this risk becomes. Current market conditions may pose heightened risks for the underlying funds. While interest rates in the U.S. are at, or near, historic lows, recent changes in government policy, including the Federal Reserve ending its quantitative easing program and raising the federal funds rate, have increased the risk that interest rates will rise in the near future. A rise in interest rates may, in turn, increase volatility and reduce liquidity in the fixed income markets, and result in a decline in the value of the fixed income investments held by the underlying funds. In addition, reductions in dealer market-making capacity as a result of structural or regulatory changes could further decrease liquidity and/or increase volatility in the fixed income markets. As a result of these conditions, an underlying fund’s value may fluctuate and/or an underlying fund may experience increased redemptions from shareholders, which may impact an underlying fund’s liquidity or force an underlying fund to sell securities into a declining or illiquid market.

Convertible securities risk — An underlying fund’s investments in convertible securities are subject to interest rate risk and credit risk, which are described below. In addition, they are also subject to the risk that the price of the underlying common stock will go down, which may cause a proportionate (or disproportionate) decline in the price of the convertible security.

Risks related to ETFs — The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio of securities. An underlying fund will also bear its proportionate share of the expenses of the purchased ETF in addition to its own expenses.

Interest rate risk — The risk that the value of fixed income securities, including U.S. Government securities, will fall due to rising interest rates. Longer-term bonds will experience greater fluctuations than shorter-term bonds in response to interest rate changes. Risks associated with rising rates are heightened given that interest rates in the U.S. are at, or near, historic lows.

Credit risk — The risk that the issuer of a security, or the counterparty to a contract, will default or otherwise become unable to honor a financial obligation. This risk is greater for junk bonds and other lower quality bonds.

Prepayment and extension risk — Fixed income securities may be paid off earlier or later than expected. Either situation could cause an underlying fund to hold securities paying lower-than-market rates of interest, which could hurt the fund’s yield or share price.

Mortgage- and asset-backed securities risks — The underlying funds’ investments in mortgage-backed and asset-backed securities may subject them to the following additional risks:

• Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations.

• Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities, and asset-backed securities may not have the benefit of any security interest in the related assets.

Equity risk — The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

Large-cap risk — Large-cap stocks tend to go in and out of favor based on market and economic conditions. During a period when large-cap stocks fall behind other types of investments — small-cap stocks, for instance — an underlying fund’s performance could be reduced to the extent its portfolio is holding large-cap stocks.

Small- and mid-cap risk — Historically, small- and mid-cap stocks have been riskier than large-cap stocks. Stock prices of smaller companies may be based in substantial part on future expectations rather than current achievements and may move sharply, especially during market upturns and downturns. Small- and mid-cap companies themselves may be more vulnerable to adverse business or economic events than larger, more established companies. Investments in small- and mid-cap stocks are also subject to liquidity risk, which is described below.

Foreign investment risk — An underlying fund’s investments in securities of foreign issuers may involve certain risks that are greater than those associated with investments in securities of U.S. issuers. These include risks of adverse changes in foreign economic, political, regulatory and other conditions; changes in currency exchange rates or exchange control regulations (including limitations on currency movements and exchanges); differing accounting, auditing, financial reporting and legal standards and practices; differing securities market structures; and higher transaction costs.

Emerging markets risk — In addition to the risks discussed above relating to investments in foreign companies located in developed countries, an underlying fund’s investments in emerging market countries are subject to the following risks:

• Emerging markets may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries.

• Emerging market countries often have less uniformity in accounting and reporting requirements and unreliable securities valuation.

• It is sometimes difficult to obtain and enforce court judgments in emerging market countries and there is often a greater potential for nationalization and/or expropriation of assets by the government of an emerging market country.

• There will tend to be an increased risk of price volatility associated with the Series’ investments in emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

Real estate securities risk — An underlying fund’s holdings in securities of issuers in the real estate industry, including investments in real estate investment trusts (REITs) and real estate operating companies (REOCs) may subject it to additional risks even though the underlying fund does not invest directly in real estate. These risks include, but are not limited to, the following: fluctuations in the value of real estate properties and interest rates, defaults by borrowers or tenants, extended vacancies and declining rents, a lack of ability to obtain mortgage financing or other limits to accessing the credit or capital markets, increased competition and overbuilding and increases in real estate or operating taxes. Any geographic concentration of an underlying fund’s real estate related investments could result in the underlying fund being subject to the above risks to a greater degree. In addition, REITs and REOCs have their own expenses, and an underlying fund that invests in REITs and REOCs will bear a proportionate share of those expenses.

High-yield securities risk — An underlying fund’s investments in high-yield securities (junk bonds) may subject it to the following additional risks:

• High-yield securities may underperform other sectors of the bond market, or the market as a whole.

• The performance of high-yield securities tends to be more volatile than that of other sectors of the bond market.

• Given the total size of the high-yield securities market, high-yield securities can be less liquid than investment grade securities.

• An underlying fund’s investments in high-yield securities will subject it to a substantial degree of credit risk because the prospect for repayment of principal and interest of many of these bonds is speculative.

Non-diversification risk — Certain of the underlying funds are non-diversified, which means that they may invest in the securities of relatively few issuers. As a result, an underlying fund may be susceptible to a single adverse economic, political or regulatory occurrence affecting one or more of those issuers, and may experience increased volatility due to its investments in those securities.

Risks of investing in BDCs — An underlying fund's investments in BDCs are subject to additional risks. BDCs generally invest in less mature private companies or thinly traded U.S. public companies which involve greater risk than well-established publicly-traded companies. Generally, little public information exists for the companies in which a BDC may invest and there is a risk that investors in the BDC may not be able to make a fully informed evaluation of a BDC and its portfolio of investments. An underlying fund will indirectly bear its proportionate share of any management and other operating expenses and of any performance based or incentive fees charged by the BDCs in which it invests, in addition to the expenses paid by the underlying fund.

Risks of investing in MLPs — An underlying fund's investments in MLPs are subject to additional risks. MLPs often own several properties or businesses (or other interests) that are related to oil and gas industries or other natural resources, but they also may finance other projects. To the extent that an MLP’s interests are all in a particular industry, the MLP will be negatively impacted by economic events adversely impacting that industry. There may be fewer protections afforded to investors in a MLP than investors in a corporation. For example, investors in MLPs may have limited voting rights or be liable under certain circumstances for amounts greater than the amount of their investment. Additional risks involved with investing in a MLP are risks associated with the specific industry or industries in which the partnership invests, such as the risks of investing in real estate, or oil and gas industries.

Derivatives risk — An underlying fund is subject to the following risks due to its ability to invest in options, futures, forwards and swaps:

• Derivatives can be extremely sensitive to changes in the market value of the underlying investment, and changes in the value of a derivative contract may not correlate perfectly with the underlying investment.

• An underlying fund may not be able to receive amounts payable to it under its derivatives contracts as quickly as it may be able to sell or otherwise obtain payments from other investments, so the underlying fund’s investments in such contracts may not be as liquid as the underlying fund’s other investments.

• An underlying fund’s use of forwards and swaps is also subject to the risk that the counterparty to the contract will default or otherwise become unable to honor its obligation to the underlying fund.

Sector focus risk — Because an underlying fund's investments may, from time to time, be more heavily invested in a particular sector or sectors, the value of its shares may be especially sensitive to factors and economic risks that specifically affect those sectors. As a result, an underlying fund's share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of sectors.

Liquidity risk — A particular investment may be difficult to purchase or sell. An underlying fund may be unable to sell illiquid securities at an advantageous time or price.

Large redemption risk — Certain institutions or individuals may from time to time own (beneficially or of record) or control a significant percentage of an underlying fund’s shares. Redemptions by these institutions or individuals in an underlying fund may impact the underlying fund’s liquidity and net asset value (NAV).

The risks above could contribute to a decline in the value of the investments of the Series and/or the underlying funds and, consequently, the share price of the Series.

Risk Lose Money [Text]

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You could lose money by investing in the Series.

Risk Nondiversified Status [Text]

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Non-diversification risk — Certain of the underlying funds are non-diversified, which means that they may invest in the securities of relatively few issuers. As a result, an underlying fund may be susceptible to a single adverse economic, political or regulatory occurrence affecting one or more of those issuers, and may experience increased volatility due to its investments in those securities.

Bar Chart and Performance Table [Heading]

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Summary of Past Performance

Performance Narrative [Text Block]

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The bar chart and average annual total return table provide some indication of the risks of investing in the Series. The bar chart shows the performance of the Class S shares of the Series for each full calendar year since its inception. The total return table shows how the average annual total returns for the Class S and Class I shares of the Series for different periods compare to those of a broad-based securities index and a blended index. For the period from August 1, 2012 through September 30, 2013, the Strategic Income Moderate Benchmark consists of the Russell 3000^® Value Index (40%), MSCI ACWI ex USA Index (10%), MSCI U.S. Real Estate Investment Trust Index (10%), and Bloomberg Barclays U.S. Aggregate Bond Index (40%). For the period beginning October 1, 2013, the Strategic Income Moderate Benchmark consists of the Russell 3000^® Value Index (32%), MSCI ACWI ex USA Index (8%), MSCI U.S. Real Estate Investment Trust Index (10%), and Bloomberg Barclays U.S. Aggregate Bond Index (50%) to reflect a change in the target allocation of the Series. The Strategic Income Moderate Benchmark is provided because it better reflects the asset allocation of the Series as compared to the broad-based index. Because the Series’ asset allocation will vary over time the composition of the Series’ portfolio may not match the composition of the comparative indices’ portfolios. Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future. Quarterly performance information of the Series is available at www.manning-napier.com.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart shows the performance of the Class S shares of the Series for each full calendar year since its inception. The total return table shows how the average annual total returns for the Class S and Class I shares of the Series for different periods compare to those of a broad-based securities index and a blended index.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The total return table shows how the average annual total returns for the Class S and Class I shares of the Series for different periods compare to those of a broad-based securities index and a blended index. For the period from August 1, 2012 through September 30, 2013, the Strategic Income Moderate Benchmark consists of the Russell 3000^® Value Index (40%), MSCI ACWI ex USA Index (10%), MSCI U.S. Real Estate Investment Trust Index (10%), and Bloomberg Barclays U.S. Aggregate Bond Index (40%). For the period beginning October 1, 2013, the Strategic Income Moderate Benchmark consists of the Russell 3000^® Value Index (32%), MSCI ACWI ex USA Index (8%), MSCI U.S. Real Estate Investment Trust Index (10%), and Bloomberg Barclays U.S. Aggregate Bond Index (50%) to reflect a change in the target allocation of the Series. The Strategic Income Moderate Benchmark is provided because it better reflects the asset allocation of the Series as compared to the broad-based index.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.manning-napier.com

Performance Past Does Not Indicate Future [Text]

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Past performance (both before and after taxes) does not necessarily indicate how the Series will perform in the future.

Bar Chart [Heading]

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Calendar Years Ended December 31

Bar Chart Closing [Text Block]

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Quarterly Returns
Highest (quarter ended 03/31/13): 5.92%
Lowest (quarter ended 09/30/15): (3.73)%

Performance Table Heading

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AVERAGE ANNUAL TOTAL RETURNS
FOR PERIODS ENDED DECEMBER 31, 2017

Performance Table Uses Highest Federal Rate

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The after-tax returns are calculated using the historical highest individual federal 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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After-tax returns are not relevant to investors who hold their Series 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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The after-tax figures are shown for one share class only, and would be different for the other share class.

Performance Table Narrative

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The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. The after-tax figures are shown for one share class only, and would be different for the other share class. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Series shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Strategic Income Moderate Series | CLASS I

Risk/Return:

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Shareholder Fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management Fee

rr_ManagementFeesOverAssets

none

Distribution (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Services Fee

rr_Component1OtherExpensesOverAssets

none

Remainder of Other Expenses

rr_Component2OtherExpensesOverAssets

0.43%

Other Expenses

rr_OtherExpensesOverAssets

0.43%

Acquired Fund Fees and Expenses (AFFE)

rr_AcquiredFundFeesAndExpensesOverAssets

0.59%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.02%

^[1]

Less Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.38%)

^[2]

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

0.64%

^[1]

AFTER 1 YEAR

rr_ExpenseExampleYear01

$ 65

AFTER 3 YEARS

rr_ExpenseExampleYear03

287

AFTER 5 YEARS

rr_ExpenseExampleYear05

526

AFTER 10 YEARS

rr_ExpenseExampleYear10

$ 1,213

1 Year

rr_AverageAnnualReturnYear01

10.67%

5 Years

rr_AverageAnnualReturnYear05

7.48%

Since Inception

rr_AverageAnnualReturnSinceInception

7.53%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 01, 2012

Strategic Income Moderate Series | CLASS S

Risk/Return:

rr_RiskReturnAbstract

Shareholder Fees (fees paid directly from your investment)

rr_ShareholderFeeOther

none

Management Fee

rr_ManagementFeesOverAssets

none

Distribution (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Services Fee

rr_Component1OtherExpensesOverAssets

0.25%

Remainder of Other Expenses

rr_Component2OtherExpensesOverAssets

0.43%

Other Expenses

rr_OtherExpensesOverAssets

0.68%

Acquired Fund Fees and Expenses (AFFE)

rr_AcquiredFundFeesAndExpensesOverAssets

0.59%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.27%

^[1]

Less Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.38%)

^[2]

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

0.89%

^[1]

AFTER 1 YEAR

rr_ExpenseExampleYear01

$ 91

AFTER 3 YEARS

rr_ExpenseExampleYear03

365

AFTER 5 YEARS

rr_ExpenseExampleYear05

660

AFTER 10 YEARS

rr_ExpenseExampleYear10

$ 1,501

2013

rr_AnnualReturn2013

11.49%

2014

rr_AnnualReturn2014

6.66%

2015

rr_AnnualReturn2015

(1.01%)

2016

rr_AnnualReturn2016

9.10%

2017

rr_AnnualReturn2017

10.39%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2013

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

5.92%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2015

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(3.73%)

1 Year

rr_AverageAnnualReturnYear01

10.39%

5 Years

rr_AverageAnnualReturnYear05

7.23%

Since Inception

rr_AverageAnnualReturnSinceInception

7.28%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 01, 2012

Strategic Income Moderate Series | Return After Taxes on Distributions | CLASS S

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

9.12%

5 Years

rr_AverageAnnualReturnYear05

5.62%

Since Inception

rr_AverageAnnualReturnSinceInception

5.67%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 01, 2012

Strategic Income Moderate Series | Return After Taxes on Distributions and Sale of Series Shares | CLASS S

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

6.36%

5 Years

rr_AverageAnnualReturnYear05

5.13%

Since Inception

rr_AverageAnnualReturnSinceInception

5.18%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 01, 2012

Strategic Income Moderate Series | Bloomberg Barclays US Aggregate Bond Index (reflect no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

3.54%

5 Years

rr_AverageAnnualReturnYear05

2.10%

Since Inception

rr_AverageAnnualReturnSinceInception

2.05%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 01, 2012

Strategic Income Moderate Series | Strategic Income Moderate Benchmark (reflect no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

8.40%

5 Years

rr_AverageAnnualReturnYear05

6.95%

Since Inception

rr_AverageAnnualReturnSinceInception

7.11%

^[3]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 31, 2012

[1] The total annual fund operating expenses in this fee table may not correlate to the expense ratios in the financial highlights in the prospectus (and in the Series’ financial statements) because the financial highlights include only the Series’ direct operating expenses and do not include fees and expenses incurred indirectly by the Series through its investments in the underlying funds.

[2] Manning & Napier Advisors, LLC (the “Advisor”) has contractually agreed to limit its fees and reimburse expenses to the extent necessary so that the total direct annual fund operating expenses of each Class, exclusive of the shareholder services fee, do not exceed 0.05% of such Class’s average daily net assets. This contractual waiver will continue until at least April 30, 2019 and may not be amended or terminated by the Advisor prior to such date without the prior approval of the Series’ Board of Directors. The Advisor’s agreement to limit each Class’s operating expenses is limited to direct operating expenses and, therefore, does not apply to AFFE, which are indirect expenses incurred by the Series through its investments in the underlying funds.

[3] Performance numbers for the Series and the Bloomberg Barclays US Aggregate Bond Index are calculated from August 1, 2012, the Series' inception date. Performance numbers for the Strategic Income Moderate Benchmark are calculated from July 31, 2012.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	MANNING & NAPIER FUND, INC.
Prospectus Date	rr_ProspectusDate	May 01, 2018
Document Creation Date	dei_DocumentCreationDate	Apr. 26, 2018