As filed with the Securities and Exchange Commission on January 10, 2013
Securities Act Registration No. 33-15166
Investment Company Act Registration No. 811-05206
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM N-1A
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
PRE-EFFECTIVE AMENDMENT NO.
POST-EFFECTIVE AMENDMENT NO. 43 (X)
and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940
POST-EFFECTIVE AMENDMENT NO. 44 (X)
Check appropriate box or boxes
Prudential Jennison Natural Resources Fund, Inc.
Exact name of registrant as specified in charter
Gateway Center Three, 4th floor
100 Mulberry Street
Newark, New Jersey 07102
Address of Principal Executive Offices including Zip Code
(973) 367-7521
Registrant’s Telephone Number, Including Area Code
Deborah A. Docs
Gateway Center Three, 4th floor
100 Mulberry Street, 4th Floor
Newark, NJ 07102
Name and Address of Agent for Service
It is proposed that this filing will become effective:
(X) immediately upon filing pursuant to paragraph (b)
on ( ) pursuant to paragraph (b)
60 days after filing pursuant to paragraph (a)(1)
on ( ) pursuant to paragraph (a)(1)
75 days after filing pursuant to paragraph (a)(2)
on (date) pursuant to paragraph (a)(2) of Rule 485
If appropriate, check the following box:
this post-effective amendment designates a new effective date for a previously filed post-effective amendment.
SIGNATURES
Pursuant to the requirements of the Securities Act and the Investment Company Act, the Fund certifies that it meets all of the requirements for effectiveness of this Post-Effective Amendment to the Registration Statement under Rule 485(b) under the Securities Act and has duly caused this Post-Effective Amendment to the Registration Statement to be signed on its behalf by the undersigned, duly authorized, in the City of Newark, and State of New Jersey, on the 10th day of January, 2013.
| Prudential Jennison Natural Resources Fund, Inc. |
| * |
|
Stuart S. Parker, 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
| ||
| * Kevin J. Bannon |
Director | |||
| * Scott E. Benjamin |
Director | |||
| * Linda W. Bynoe |
Director | |||
| * Michael S. Hyland |
Director | |||
| * Douglas H. McCorkindale |
Director | |||
| * Stephen P. Munn |
Director | |||
| * Stuart S. Parker |
Director and President, Principal Executive Officer |
|||
| * Richard A. Redeker |
Director | |||
| * Robin B. Smith |
Director | |||
| * Stephen Stoneburn |
Director | |||
| * Grace C. Torres |
Treasurer, Principal Financial and Accounting Officer |
|||
| *By: /s/ Jonathan D. Shain Jonathan D. Shain |
Attorney-in-Fact | January 10, 2013 | ||
POWER OF ATTORNEY
The undersigned Directors, Trustees and Officers of the Prudential Investments Mutual Funds, the Target Funds and The Prudential Variable Contract Accounts 2, 10 and 11 (collectively, the “Funds”), hereby constitute, appoint and authorize each of, Andrew French, Claudia DiGiacomo, Deborah A. Docs, Katherine P. Feld, Raymond O’Hara, Amanda Ryan, and Jonathan D. Shain, as true and lawful agents and attorneys-in-fact, to sign, execute and deliver on his or her behalf in the appropriate capacities indicated, any Registration Statements of the Funds on the appropriate forms, any and all amendments thereto (including pre- and post-effective amendments), and any and all supplements or other instruments in connection therewith, including Form N-PX, Forms 3, 4 and 5, as appropriate, to file the same, with all exhibits thereto, with the U.S. Securities and Exchange Commission (the “SEC”) and the securities regulators of appropriate states and territories, and generally to do all such things in his or her name and behalf in connection therewith as said attorney-in-fact deems necessary or appropriate to comply with the provisions of the Securities Act of 1933, section 16(a) of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, all related requirements of the SEC and all requirements of appropriate states and territories. The undersigned do hereby give to said agents and attorneys-in-fact full power and authority to act in these premises, including, but not limited to, the power to appoint a substitute or substitutes to act hereunder with the same power and authority as said agents and attorneys-in-fact would have if personally acting. The undersigned do hereby approve, ratify and confirm all that said agents and attorneys-in-fact, or any substitute or substitutes, may do by virtue hereof.
| /s/ Kevin J. Bannon Kevin J. Bannon |
/s/ Stuart S. Parker Stuart S. Parker | |||||
| /s/ Scott E. Benjamin Scott E. Benjamin |
/s/ Richard A. Redeker Richard A. Redeker | |||||
| /s/ Linda W. Bynoe Linda W. Bynoe |
/s/ Robin B. Smith Robin B. Smith | |||||
| /s/ Michael S. Hyland Michael S. Hyland |
/s/ Stephen Stoneburn Stephen Stoneburn | |||||
| /s/ Douglas H. McCorkindale Douglas H. McCorkindale |
/s/ Grace C. Torres Grace C. Torres | |||||
| /s/ Stephen P. Munn Stephen P. Munn |
||||||
| Dated: June 6, 2012 | ||||||
Exhibit Index
| Exhibit No. | Description | |||
| EX-101.INS | XBRL Instance Document | |||
| EX-101.SCH | XBRL Taxonomy Extension Schema Document | |||
| EX-101.CAL | XBRL Taxonomy Extension Calculation Linkbase | |||
| EX-101.DEF | XBRL Taxonomy Extension Definition Linkbase | |||
| EX-101.LAB | XBRL Taxonomy Extension Labels Linkbase | |||
| EX-101.PRE | XBRL Taxonomy Extension Presentation Linkbase | |||
| Label | Element | Value | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||
| Registrant Name | dei_EntityRegistrantName | PRUDENTIAL JENNISON NATURAL RESOURCES FUND, INC. | |||||||||
| Prospectus Date | rr_ProspectusDate | Dec. 31, 2012 | |||||||||
|
Jennison Natural Resources Fund, Inc.
|
|||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||
| Risk/Return [Heading] | rr_RiskReturnHeading | PRUDENTIAL JENNISON NATURAL RESOURCES FUND, INC. FUND SUMMARY |
|||||||||
| Objective [Heading] | rr_ObjectiveHeading | INVESTMENT OBJECTIVE | |||||||||
| Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | The investment objective of the Fund is long-term growth of capital. | |||||||||
| Expense [Heading] | rr_ExpenseHeading | FUND FEES AND EXPENSES | |||||||||
| Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The tables below describe the sales charges, fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and an eligible group of investors purchase, or agree to purchase in the future, $25,000 or more in shares of the Fund or other funds in the Prudential Investments family of funds. More information about these discounts is available from your financial professional and is explained in Reducing or Waiving Class A's Initial Sales Charge on page 24 of the Fund's Prospectus and in the Fund's Statement of Additional Information (SAI), in Rights of Accumulation on page 43. | |||||||||
| Shareholder Fees Caption [Text] | rr_ShareholderFeesCaption | 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 | February 28, 2014 | |||||||||
| Portfolio Turnover [Heading] | rr_PortfolioTurnoverHeading | Portfolio Turnover. | |||||||||
| Portfolio Turnover [Text Block] | rr_PortfolioTurnoverTextBlock | The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the Fund's most recent fiscal year, the Fund's portfolio turnover rate was 27% of the average value of its portfolio. | |||||||||
| Portfolio Turnover, Rate | rr_PortfolioTurnoverRate | 27.00% | |||||||||
| Expense Breakpoint Discounts [Text] | rr_ExpenseBreakpointDiscounts | You may qualify for sales charge discounts if you and an eligible group of investors purchase, or agree to purchase in the future, $25,000 or more in shares of the Fund or other funds in the Prudential Investments family of funds. | |||||||||
| Expense Breakpoint, Minimum Investment Required [Amount] | rr_ExpenseBreakpointMinimumInvestmentRequiredAmount | 25,000 | |||||||||
| Expense Example [Heading] | rr_ExpenseExampleHeading | Example. | |||||||||
| Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | The following hypothetical example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It assumes that you invest $10,000 in the Fund for the time periods indicated and then, except as indicated, redeem all your shares at the end of those periods. It assumes a 5% return on your investment each year, that the Fund's operating expenses remain the same and that all dividends and distributions are reinvested. Your actual costs may be higher or lower. | |||||||||
| Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | If Shares Are Redeemed | |||||||||
| Expense Example, No Redemption, By Year, Caption [Text] | rr_ExpenseExampleNoRedemptionByYearCaption | If Shares Are Not Redeemed | |||||||||
| Expense Example Footnotes [Text Block] | rr_ExpenseExampleFootnotesTextBlock | ° The distributor of the Fund has contractually agreed until February 28, 2014 to reduce its distribution and service (12b-1) fees for Class R shares to .50% of the average daily net assets of Class R shares. This waiver may not be terminated by the distributor prior to February 28, 2014. The decision on whether to renew, modify or discontinue the waiver is subject to review by the distributor and the Fund’s Board of Directors. | |||||||||
| Strategy [Heading] | rr_StrategyHeading | INVESTMENTS, RISKS AND PERFORMANCE Principal Investment Strategies. |
|||||||||
| Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock | Consistent with our investment objective, we look for investments that we think will increase in value over a period of years. The Fund normally invests at least 80% of investable assets in equity and equity-related securities of natural resource companies and in asset-based securities, as described below. Natural resource companies are U.S. and foreign (non-U.S. based) companies that own, explore, mine, process or otherwise develop, or provide goods and services with respect to, natural resources. Asset-based securities are securities, the values of which are related to the market value of a natural resource. The principal type of equity in which the Fund invests is common stock. In addition to common stock, equity and equity-related securities include preferred stock, rights that can be exercised to obtain stock, warrants and debt securities or preferred stock convertible into or exchangeable for common or preferred stock and interests in master limited partnerships. Generally, we consider selling a security when it no longer displays conditions for growth, is no longer undervalued or falls short of expectations. The Fund will provide 60 days’ prior written notice to shareholders of a change in this non-fundamental policy. | |||||||||
| Risk [Heading] | rr_RiskHeading | Principal Risks of Investing in the Fund. | |||||||||
| Risk Narrative [Text Block] | rr_RiskNarrativeTextBlock | All investments have risks to some degree. Please remember that an investment in the Fund is not guaranteed to achieve its investment objective; is not a deposit with a bank; is not insured, endorsed or guaranteed by the Federal Deposit Insurance Corporation or any other government agency; and is subject to investment risks, including possible loss of your original investment. Recent Market Events. The financial crisis that began in 2008 has caused a significant decline in the value and liquidity of many securities. In response to the crisis, the U.S. and other governments and U.S. and foreign central banks have taken steps to support financial markets. The withdrawal of this support, failure of efforts in response to the crisis, or investor perception that such efforts are not succeeding could negatively affect financial markets generally as well as the value and liquidity of certain securities. In addition, policy and legislative changes in the United States and other countries are changing many aspects of financial regulation. The impact of these changes on the markets, and the practical implications for market participants, may not be fully known for some time. Risk of Increase in Expenses. Your actual cost of investing in the Fund may be higher than the expenses shown in the expense table for a variety of reasons. For example, expense ratios may be higher than those shown if average net assets decrease. Net assets are more likely to decrease and Fund expense ratios are more likely to increase when markets are volatile. Special Risks of Investing in Natural Resource Companies. The Fund’s investments in securities of natural resource companies involve risks. The market value of securities of natural resource companies may be affected by numerous factors, including events occurring in nature, inflationary pressures and international politics. Because the Fund invests primarily in companies with natural resource assets, there is the risk that the Fund will perform poorly during a downturn in natural resource companies. For example, events occurring in nature (such as earthquakes or fires in prime natural resource areas) and political events (such as coups, military confrontations or acts of terrorism) can affect the overall supply of a natural resource and the value of companies involved in such natural resource. Political risks and the other risks to which foreign securities are subject may also affect domestic companies in which we invest if they have significant operations or investments in foreign countries. In addition, rising interest rates and general economic conditions may affect the demand for natural resources. Nondiversification Risk. The Fund is nondiversified. This means that the Fund may invest a greater percentage of its assets in the securities of a single company or other issuer than a diversified fund. Investing in a nondiversified fund involves greater risk than investing in a diversified fund because a loss resulting from the decline in value of any one security may represent a greater portion of the total assets of a nondiversified fund. Management Risk. The value of your investment may decrease if judgments by the subadviser about the attractiveness, value or market trends affecting a particular security, industry or sector or about market movements are incorrect. Equity and Equity-Related Securities Risks. There is the risk that the value of a particular security could go down and you could lose money. In addition to an individual security losing value, the value of the equity markets or a sector in which the Fund invests could go down. The Fund's holdings can vary significantly from broad market indexes and the performance of the Fund can deviate from the performance of these indexes. Different parts of a market can react differently to adverse issuer, market, regulatory, political and economic developments. The Fund may invest in companies that reinvest their earnings rather than distribute them to shareholders. To the extent the Fund does invest in such companies, the Fund is not likely to receive significant dividend income on its portfolio securities. Market Risk. The securities markets are volatile and the market prices of the Fund’s securities may decline generally. Securities fluctuate in price based on changes in a company’s financial condition and overall market and economic conditions. If the market prices of the securities owned by the Fund fall, the value of your investment in the Fund will decline. Foreign Securities Risk. The Fund’s investments in securities of foreign issuers or issuers with significant exposure to foreign markets involve additional risk. Foreign countries in which the Fund may invest may have markets that are less liquid, less regulated and more volatile than U.S. markets. The value of the Fund’s investments may decline because of factors affecting the particular issuer as well as foreign markets and issuers generally, such as unfavorable government actions, and political or financial instability. Lack of information may also affect the value of these securities. We do not consider American Depositary Receipts (“ADRs”), American Depositary Shares (“ADSs”) and other similar receipts or shares traded in U.S. markets in which the Fund may invest to be foreign securities. For more information on the risks of investing in this Fund, including the risks of foreign securities, please see How the Fund Invests—Investment Risks in the Prospectus and Investment Risks and Considerations in the SAI. |
|||||||||
| Risk Lose Money [Text] | rr_RiskLoseMoney | and is subject to investment risks, including possible loss of your original investment. | |||||||||
| Risk Nondiversified Status [Text] | rr_RiskNondiversifiedStatus | Nondiversification Risk. The Fund is nondiversified. This means that the Fund may invest a greater percentage of its assets in the securities of a single company or other issuer than a diversified fund. Investing in a nondiversified fund involves greater risk than investing in a diversified fund because a loss resulting from the decline in value of any one security may represent a greater portion of the total assets of a nondiversified fund. | |||||||||
| Risk Not Insured Depository Institution [Text] | rr_RiskNotInsuredDepositoryInstitution | Please remember that an investment in the Fund is not guaranteed to achieve its investment objective; is not a deposit with a bank; is not insured, endorsed or guaranteed by the Federal Deposit Insurance Corporation or any other government agency; | |||||||||
| Bar Chart and Performance Table [Heading] | rr_BarChartAndPerformanceTableHeading | The Fund's Past Performance. | |||||||||
| Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | The following bar chart shows the Fund's performance for the indicated share class for each full calendar year of operations or for the last 10 calendar years, whichever is shorter. The bar chart and Average Annual Total Returns table demonstrate the risk of investing in the Fund by showing how returns can change from year to year and by showing how the Fund's average annual total returns for the share class compare with a broad-based securities market index and a group of similar mutual funds. Past performance (before and after taxes) does not mean that the Fund will achieve similar results in the future. Updated Fund performance information is available online at www.prudentialfunds.com. |
|||||||||
| Performance Information Illustrates Variability of Returns [Text] | rr_PerformanceInformationIllustratesVariabilityOfReturns | The bar chart and Average Annual Total Returns table demonstrate the risk of investing in the Fund by showing how returns can change from year to year and by showing how the Fund's average annual total returns for the share class compare with a broad-based securities market index and a group of similar mutual funds. | |||||||||
| Performance Availability Website Address [Text] | rr_PerformanceAvailabilityWebSiteAddress | www.prudentialfunds.com | |||||||||
| Performance Past Does Not Indicate Future [Text] | rr_PerformancePastDoesNotIndicateFuture | Past performance (before and after taxes) does not mean that the Fund will achieve similar results in the future. | |||||||||
| Bar Chart [Heading] | rr_BarChartHeading | Annual Total Returns (Class A Shares)1 | |||||||||
| Bar Chart Does Not Reflect Sales Loads [Text] | rr_BarChartDoesNotReflectSalesLoads | These annual total returns do not include deductions for sales charges. If the sales charges were included, the annual total returns would be lower than those shown. | |||||||||
| Bar Chart Closing [Text Block] | rr_BarChartClosingTextBlock |
|
|||||||||
| Performance Table Heading | rr_PerformanceTableHeading | Average Annual Total Returns % (including sales charges) (as of 12-31-11) | |||||||||
| Performance Table Uses Highest Federal Rate | rr_PerformanceTableUsesHighestFederalRate | 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 shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement plans or accounts. | |||||||||
| Performance Table One Class of after Tax Shown [Text] | rr_PerformanceTableOneClassOfAfterTaxShown | After-tax returns are shown only for the indicated share class. After-tax returns for other classes will vary due to differing sales charges and expenses. | |||||||||
| Performance Table Narrative | rr_PerformanceTableNarrativeTextBlock | ° 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 shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement plans or accounts. After-tax returns are shown only for the indicated share class. After-tax returns for other classes will vary due to differing sales charges and expenses. | |||||||||
|
Jennison Natural Resources Fund, Inc. | Class B
|
|||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||
| Maximum sales charge (load) imposed on purchases (as a percentage of offering price) | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | none | |||||||||
| Maximum deferred sales charge (load) (as a percentage of the lower of original purchase price or sale proceeds) | rr_MaximumDeferredSalesChargeOverOther | 5.00% | |||||||||
| Maximum sales charge (load) imposed on reinvested dividends and other distributions | rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther | none | |||||||||
| Redemption fee | rr_RedemptionFeeOverRedemption | none | |||||||||
| Exchange fee | rr_ExchangeFeeOverRedemption | none | |||||||||
| Maximum account fee (accounts under $10,000) | rr_MaximumAccountFee | 15 | |||||||||
| Management fees | rr_ManagementFeesOverAssets | 0.71% | |||||||||
| + Distribution and service (12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | 1.00% | |||||||||
| + Other expenses | rr_OtherExpensesOverAssets | 0.18% | |||||||||
| = Total annual Fund operating expenses | rr_ExpensesOverAssets | 1.89% | |||||||||
| – Fee waivers | rr_FeeWaiverOrReimbursementOverAssets | none | |||||||||
| = Net annual Fund operating expenses | rr_NetExpensesOverAssets | 1.89% | |||||||||
| 1 Year | rr_ExpenseExampleYear01 | 692 | |||||||||
| 3 Years | rr_ExpenseExampleYear03 | 894 | |||||||||
| 5 Years | rr_ExpenseExampleYear05 | 1,121 | |||||||||
| 10 Years | rr_ExpenseExampleYear10 | 1,944 | |||||||||
| 1 Year | rr_ExpenseExampleNoRedemptionYear01 | 192 | |||||||||
| 3 Years | rr_ExpenseExampleNoRedemptionYear03 | 594 | |||||||||
| 5 Years | rr_ExpenseExampleNoRedemptionYear05 | 1,021 | |||||||||
| 10 Years | rr_ExpenseExampleNoRedemptionYear10 | 1,944 | |||||||||
| One Year | rr_AverageAnnualReturnYear01 | (23.39%) | |||||||||
| Five Years | rr_AverageAnnualReturnYear05 | 3.45% | |||||||||
| Ten Years | rr_AverageAnnualReturnYear10 | 16.24% | |||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | ||||||||||
|
Jennison Natural Resources Fund, Inc. | Class C
|
|||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||
| Maximum sales charge (load) imposed on purchases (as a percentage of offering price) | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | none | |||||||||
| Maximum deferred sales charge (load) (as a percentage of the lower of original purchase price or sale proceeds) | rr_MaximumDeferredSalesChargeOverOther | 1.00% | |||||||||
| Maximum sales charge (load) imposed on reinvested dividends and other distributions | rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther | none | |||||||||
| Redemption fee | rr_RedemptionFeeOverRedemption | none | |||||||||
| Exchange fee | rr_ExchangeFeeOverRedemption | none | |||||||||
| Maximum account fee (accounts under $10,000) | rr_MaximumAccountFee | 15 | |||||||||
| Management fees | rr_ManagementFeesOverAssets | 0.71% | |||||||||
| + Distribution and service (12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | 1.00% | |||||||||
| + Other expenses | rr_OtherExpensesOverAssets | 0.18% | |||||||||
| = Total annual Fund operating expenses | rr_ExpensesOverAssets | 1.89% | |||||||||
| – Fee waivers | rr_FeeWaiverOrReimbursementOverAssets | none | |||||||||
| = Net annual Fund operating expenses | rr_NetExpensesOverAssets | 1.89% | |||||||||
| 1 Year | rr_ExpenseExampleYear01 | 292 | |||||||||
| 3 Years | rr_ExpenseExampleYear03 | 594 | |||||||||
| 5 Years | rr_ExpenseExampleYear05 | 1,021 | |||||||||
| 10 Years | rr_ExpenseExampleYear10 | 2,212 | |||||||||
| 1 Year | rr_ExpenseExampleNoRedemptionYear01 | 192 | |||||||||
| 3 Years | rr_ExpenseExampleNoRedemptionYear03 | 594 | |||||||||
| 5 Years | rr_ExpenseExampleNoRedemptionYear05 | 1,021 | |||||||||
| 10 Years | rr_ExpenseExampleNoRedemptionYear10 | 2,212 | |||||||||
| One Year | rr_AverageAnnualReturnYear01 | (20.17%) | |||||||||
| Five Years | rr_AverageAnnualReturnYear05 | 3.62% | |||||||||
| Ten Years | rr_AverageAnnualReturnYear10 | 16.24% | |||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | ||||||||||
|
Jennison Natural Resources Fund, Inc. | Class Q
|
|||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||
| Maximum sales charge (load) imposed on purchases (as a percentage of offering price) | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | none | |||||||||
| Maximum deferred sales charge (load) (as a percentage of the lower of original purchase price or sale proceeds) | rr_MaximumDeferredSalesChargeOverOther | none | |||||||||
| Maximum sales charge (load) imposed on reinvested dividends and other distributions | rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther | none | |||||||||
| Redemption fee | rr_RedemptionFeeOverRedemption | none | |||||||||
| Exchange fee | rr_ExchangeFeeOverRedemption | none | |||||||||
| Maximum account fee (accounts under $10,000) | rr_MaximumAccountFee | none | |||||||||
| Management fees | rr_ManagementFeesOverAssets | 0.71% | |||||||||
| + Distribution and service (12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | none | |||||||||
| + Other expenses | rr_OtherExpensesOverAssets | 0.04% | |||||||||
| = Total annual Fund operating expenses | rr_ExpensesOverAssets | 0.75% | |||||||||
| – Fee waivers | rr_FeeWaiverOrReimbursementOverAssets | none | |||||||||
| = Net annual Fund operating expenses | rr_NetExpensesOverAssets | 0.75% | |||||||||
| 1 Year | rr_ExpenseExampleYear01 | 77 | |||||||||
| 3 Years | rr_ExpenseExampleYear03 | 240 | |||||||||
| 5 Years | rr_ExpenseExampleYear05 | 417 | |||||||||
| 10 Years | rr_ExpenseExampleYear10 | 930 | |||||||||
| 1 Year | rr_ExpenseExampleNoRedemptionYear01 | 77 | |||||||||
| 3 Years | rr_ExpenseExampleNoRedemptionYear03 | 240 | |||||||||
| 5 Years | rr_ExpenseExampleNoRedemptionYear05 | 417 | |||||||||
| 10 Years | rr_ExpenseExampleNoRedemptionYear10 | 930 | |||||||||
| One Year | rr_AverageAnnualReturnYear01 | (18.46%) | |||||||||
| Five Years | rr_AverageAnnualReturnYear05 | ||||||||||
| Ten Years | rr_AverageAnnualReturnYear10 | ||||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | (16.36%) | |||||||||
| Inception Date | rr_AverageAnnualReturnInceptionDate | Dec. 27, 2010 | |||||||||
|
Jennison Natural Resources Fund, Inc. | Class R
|
|||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||
| Maximum sales charge (load) imposed on purchases (as a percentage of offering price) | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | none | |||||||||
| Maximum deferred sales charge (load) (as a percentage of the lower of original purchase price or sale proceeds) | rr_MaximumDeferredSalesChargeOverOther | none | |||||||||
| Maximum sales charge (load) imposed on reinvested dividends and other distributions | rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther | none | |||||||||
| Redemption fee | rr_RedemptionFeeOverRedemption | none | |||||||||
| Exchange fee | rr_ExchangeFeeOverRedemption | none | |||||||||
| Maximum account fee (accounts under $10,000) | rr_MaximumAccountFee | none | |||||||||
| Management fees | rr_ManagementFeesOverAssets | 0.71% | |||||||||
| + Distribution and service (12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | 0.75% | |||||||||
| + Other expenses | rr_OtherExpensesOverAssets | 0.18% | |||||||||
| = Total annual Fund operating expenses | rr_ExpensesOverAssets | 1.64% | |||||||||
| – Fee waivers | rr_FeeWaiverOrReimbursementOverAssets | (0.25%) | |||||||||
| = Net annual Fund operating expenses | rr_NetExpensesOverAssets | 1.39% | |||||||||
| 1 Year | rr_ExpenseExampleYear01 | 142 | |||||||||
| 3 Years | rr_ExpenseExampleYear03 | 493 | |||||||||
| 5 Years | rr_ExpenseExampleYear05 | 868 | |||||||||
| 10 Years | rr_ExpenseExampleYear10 | 1,923 | |||||||||
| 1 Year | rr_ExpenseExampleNoRedemptionYear01 | 142 | |||||||||
| 3 Years | rr_ExpenseExampleNoRedemptionYear03 | 493 | |||||||||
| 5 Years | rr_ExpenseExampleNoRedemptionYear05 | 868 | |||||||||
| 10 Years | rr_ExpenseExampleNoRedemptionYear10 | 1,923 | |||||||||
| One Year | rr_AverageAnnualReturnYear01 | (18.95%) | |||||||||
| Five Years | rr_AverageAnnualReturnYear05 | 4.16% | |||||||||
| Ten Years | rr_AverageAnnualReturnYear10 | ||||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | 4.76% | |||||||||
| Inception Date | rr_AverageAnnualReturnInceptionDate | Aug. 22, 2006 | |||||||||
|
Jennison Natural Resources Fund, Inc. | Class Z
|
|||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||
| Maximum sales charge (load) imposed on purchases (as a percentage of offering price) | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | none | |||||||||
| Maximum deferred sales charge (load) (as a percentage of the lower of original purchase price or sale proceeds) | rr_MaximumDeferredSalesChargeOverOther | none | |||||||||
| Maximum sales charge (load) imposed on reinvested dividends and other distributions | rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther | none | |||||||||
| Redemption fee | rr_RedemptionFeeOverRedemption | none | |||||||||
| Exchange fee | rr_ExchangeFeeOverRedemption | none | |||||||||
| Maximum account fee (accounts under $10,000) | rr_MaximumAccountFee | none | |||||||||
| Management fees | rr_ManagementFeesOverAssets | 0.71% | |||||||||
| + Distribution and service (12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | none | |||||||||
| + Other expenses | rr_OtherExpensesOverAssets | 0.18% | |||||||||
| = Total annual Fund operating expenses | rr_ExpensesOverAssets | 0.89% | |||||||||
| – Fee waivers | rr_FeeWaiverOrReimbursementOverAssets | none | |||||||||
| = Net annual Fund operating expenses | rr_NetExpensesOverAssets | 0.89% | |||||||||
| 1 Year | rr_ExpenseExampleYear01 | 91 | |||||||||
| 3 Years | rr_ExpenseExampleYear03 | 284 | |||||||||
| 5 Years | rr_ExpenseExampleYear05 | 493 | |||||||||
| 10 Years | rr_ExpenseExampleYear10 | 1,096 | |||||||||
| 1 Year | rr_ExpenseExampleNoRedemptionYear01 | 91 | |||||||||
| 3 Years | rr_ExpenseExampleNoRedemptionYear03 | 284 | |||||||||
| 5 Years | rr_ExpenseExampleNoRedemptionYear05 | 493 | |||||||||
| 10 Years | rr_ExpenseExampleNoRedemptionYear10 | 1,096 | |||||||||
| One Year | rr_AverageAnnualReturnYear01 | (18.54%) | |||||||||
| Five Years | rr_AverageAnnualReturnYear05 | 4.66% | |||||||||
| Ten Years | rr_AverageAnnualReturnYear10 | 17.41% | |||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | ||||||||||
|
Jennison Natural Resources Fund, Inc. | Class A
|
|||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||
| Maximum sales charge (load) imposed on purchases (as a percentage of offering price) | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | 5.50% | |||||||||
| Maximum deferred sales charge (load) (as a percentage of the lower of original purchase price or sale proceeds) | rr_MaximumDeferredSalesChargeOverOther | 1.00% | |||||||||
| Maximum sales charge (load) imposed on reinvested dividends and other distributions | rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther | none | |||||||||
| Redemption fee | rr_RedemptionFeeOverRedemption | none | |||||||||
| Exchange fee | rr_ExchangeFeeOverRedemption | none | |||||||||
| Maximum account fee (accounts under $10,000) | rr_MaximumAccountFee | 15 | |||||||||
| Management fees | rr_ManagementFeesOverAssets | 0.71% | |||||||||
| + Distribution and service (12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | 0.30% | |||||||||
| + Other expenses | rr_OtherExpensesOverAssets | 0.18% | |||||||||
| = Total annual Fund operating expenses | rr_ExpensesOverAssets | 1.19% | |||||||||
| – Fee waivers | rr_FeeWaiverOrReimbursementOverAssets | none | |||||||||
| = Net annual Fund operating expenses | rr_NetExpensesOverAssets | 1.19% | |||||||||
| 1 Year | rr_ExpenseExampleYear01 | 665 | |||||||||
| 3 Years | rr_ExpenseExampleYear03 | 907 | |||||||||
| 5 Years | rr_ExpenseExampleYear05 | 1,168 | |||||||||
| 10 Years | rr_ExpenseExampleYear10 | 1,914 | |||||||||
| 1 Year | rr_ExpenseExampleNoRedemptionYear01 | 665 | |||||||||
| 3 Years | rr_ExpenseExampleNoRedemptionYear03 | 907 | |||||||||
| 5 Years | rr_ExpenseExampleNoRedemptionYear05 | 1,168 | |||||||||
| 10 Years | rr_ExpenseExampleNoRedemptionYear10 | 1,914 | |||||||||
| 2002 | rr_AnnualReturn2002 | 20.09% | [1] | ||||||||
| 2003 | rr_AnnualReturn2003 | 37.08% | [1] | ||||||||
| 2004 | rr_AnnualReturn2004 | 27.07% | [1] | ||||||||
| 2005 | rr_AnnualReturn2005 | 54.19% | [1] | ||||||||
| 2006 | rr_AnnualReturn2006 | 21.43% | [1] | ||||||||
| 2007 | rr_AnnualReturn2007 | 46.14% | [1] | ||||||||
| 2008 | rr_AnnualReturn2008 | (52.87%) | [1] | ||||||||
| 2009 | rr_AnnualReturn2009 | 73.17% | [1] | ||||||||
| 2010 | rr_AnnualReturn2010 | 27.79% | [1] | ||||||||
| 2011 | rr_AnnualReturn2011 | (18.80%) | [1] | ||||||||
| Year to Date Return, Label | rr_YearToDateReturnLabel | The total return of the Fund’s Class A shares from January 1, 2012 to September 30, 2012 | |||||||||
| Bar Chart, Year to Date Return, Date | rr_BarChartYearToDateReturnDate | Sep. 30, 2012 | |||||||||
| Bar Chart, Year to Date Return | rr_BarChartYearToDateReturn | 0.09% | |||||||||
| Highest Quarterly Return, Label | rr_HighestQuarterlyReturnLabel | Best Quarter: | |||||||||
| Highest Quarterly Return, Date | rr_BarChartHighestQuarterlyReturnDate | Sep. 30, 2005 | |||||||||
| Highest Quarterly Return | rr_BarChartHighestQuarterlyReturn | 28.24% | |||||||||
| Lowest Quarterly Return, Label | rr_LowestQuarterlyReturnLabel | Worst Quarter: | |||||||||
| Lowest Quarterly Return, Date | rr_BarChartLowestQuarterlyReturnDate | Sep. 30, 2008 | |||||||||
| Lowest Quarterly Return | rr_BarChartLowestQuarterlyReturn | (40.93%) | |||||||||
| One Year | rr_AverageAnnualReturnYear01 | (23.26%) | |||||||||
| Five Years | rr_AverageAnnualReturnYear05 | 3.18% | |||||||||
| Ten Years | rr_AverageAnnualReturnYear10 | 16.44% | |||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | ||||||||||
|
Jennison Natural Resources Fund, Inc. | Return After Taxes on Distributions | Class A
|
|||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||
| One Year | rr_AverageAnnualReturnYear01 | (23.26%) | |||||||||
| Five Years | rr_AverageAnnualReturnYear05 | 2.40% | |||||||||
| Ten Years | rr_AverageAnnualReturnYear10 | 15.21% | |||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | ||||||||||
|
Jennison Natural Resources Fund, Inc. | Return After Taxes on Distributions and Sale of Fund Shares | Class A
|
|||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||
| One Year | rr_AverageAnnualReturnYear01 | (15.12%) | |||||||||
| Five Years | rr_AverageAnnualReturnYear05 | 2.42% | |||||||||
| Ten Years | rr_AverageAnnualReturnYear10 | 14.31% | |||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | ||||||||||
|
Jennison Natural Resources Fund, Inc. | Lipper Global Natural Resources Index (reflects no deduction for fees, expenses or taxes)
|
|||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||
| One Year | rr_AverageAnnualReturnYear01 | (16.41%) | |||||||||
| Five Years | rr_AverageAnnualReturnYear05 | 0.70% | |||||||||
| Ten Years | rr_AverageAnnualReturnYear10 | 11.78% | |||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | ||||||||||
|
Jennison Natural Resources Fund, Inc. | S&P 500 Index (reflects no deduction for fees, expenses or taxes)
|
|||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||
| One Year | rr_AverageAnnualReturnYear01 | 2.09% | |||||||||
| Five Years | rr_AverageAnnualReturnYear05 | (0.25%) | |||||||||
| Ten Years | rr_AverageAnnualReturnYear10 | 2.92% | |||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | ||||||||||
|
Jennison Natural Resources Fund, Inc. | MSCI World ND Index (reflects no deduction for fees, expenses or taxes)
|
|||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||
| One Year | rr_AverageAnnualReturnYear01 | (5.54%) | |||||||||
| Five Years | rr_AverageAnnualReturnYear05 | (2.37%) | |||||||||
| Ten Years | rr_AverageAnnualReturnYear10 | 3.62% | |||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | ||||||||||
|
Jennison Natural Resources Fund, Inc. | Lipper Global Natural Resources Funds Average (reflects no deduction for fees, expenses or taxes)
|
|||||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||||
| One Year | rr_AverageAnnualReturnYear01 | (16.65%) | |||||||||
| Five Years | rr_AverageAnnualReturnYear05 | 1.55% | |||||||||
| Ten Years | rr_AverageAnnualReturnYear10 | 13.26% | |||||||||
| Since Inception | rr_AverageAnnualReturnSinceInception | ||||||||||
|
|||||||||||