XML 10 R9.htm IDEA: XBRL DOCUMENT v2.4.0.6
Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName PRUDENTIAL SECTOR FUNDS, INC.
Prospectus Date rr_ProspectusDate Jan. 31, 2013
Prudential Financial Services Fund
  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading FUND SUMMARY
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock The investment objective of the Fund is long-term capital appreciation.
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 53.
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 March 31, 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 63% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 63.00%
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 Closing [Text Block] rr_ExpenseExampleClosingTextBlock ° The Distributor of the Fund has contractually agreed to limit its distribution and service (12b-1) fees to .50% of the average daily net assets of the Class R shares through March 31, 2014. This waiver may not be terminated prior to March 31, 2014. The decision on whether to renew, modify or terminate 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 The Fund seeks investments whose prices will increase over time. The Fund normally invests at least 80% of its investable assets in equity and equity-related securities of companies within the financial services sector, such as banks, savings and loan associations (and other thrifts), mortgage banking companies, finance companies, insurance companies, securities/brokerage firms, asset management companies, securities exchanges, leasing companies and consumer and industrial finance companies, and other companies that are primarily engaged in providing financial services. The term “investable assets” refers to the Fund's net assets plus any borrowings for investment purposes. The Fund's investable assets will be less than its total assets to the extent that it has borrowed money for non-investment purposes, such as to meet anticipated redemptions. We refer to the group of industries in which the Fund concentrates as its “sector.”

The Fund will invest in securities of issuers among a number of different countries throughout the world, one of which may be the United States. However, the Fund has no limit on the amount of assets that must be invested in each country. The Fund’ s investments in the securities of non-U.S. issuers, which we refer to as “foreign securities,” include stocks and other equity-related securities.

The Fund may participate in the initial public offering (“IPO”) market. Securities purchased in initial public offerings may be very volatile, rising and falling rapidly, often based, among other reasons, on investor perceptions rather than on economic factors. Additionally, investments in IPOs may magnify the Fund’s performance if it has a small asset base.

The Fund will provide 60 days' prior written notice to shareholders of a change in its non-fundamental policy of investing at least 80% of its investable assets in the type of investment suggested by its name. While we make every effort to achieve the Fund's investment objective, we can't guarantee success.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The Fund normally invests at least 80% of its investable assets in equity and equity-related securities of companies within the financial services sector, such as banks, savings and loan associations (and other thrifts), mortgage banking companies, finance companies, insurance companies, securities/brokerage firms, asset management companies, securities exchanges, leasing companies and consumer and industrial finance companies, and other companies that are primarily engaged in providing financial services.
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.

Sector Risk. The Fund is subject to risks within its own sector because it concentrates its investments in securities of companies within that sector's industries. For example, the Fund can be most adversely affected by legislative changes, increased competition, general economic conditions and financial market disruptions. The prices of the securities in which the Fund invests can be volatile. Since the Fund is a sector fund, its holdings can vary significantly from broad market indexes and the performance of the Fund can deviate from the performance of the indexes.

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.

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.

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.

Currency Risk. The Fund's net asset value could decline as a result of changes in the exchange rates between foreign currencies and the U.S. dollar. Certain foreign countries may impose restrictions on the ability of issuers of foreign securities to make payment of principal and interest or dividends to investors located outside the country, due to blockage of foreign currency exchanges or otherwise.

For more information on the risks of investing in this Fund, including the risks of investing in 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 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.
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 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

Best Quarter: Worst Quarter:
37.73% 2nd Quarter 2009 -25.92% 3rd Quarter 2011
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns % (including sales charges) (as of 12-31-12)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the highest historical individual federal marginal tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred 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 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 highest historical individual federal marginal 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 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.
Prudential Financial Services Fund | 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_MaximumDeferredSalesChargeOverOfferingPrice 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 0.75%
+ Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.30%
+ Other expenses rr_OtherExpensesOverAssets 0.36%
= Total annual Fund operating expenses rr_ExpensesOverAssets 1.41%
- Fee waiver or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets none
= Net annual Fund operating expenses rr_NetExpensesOverAssets 1.41%
1 Year rr_ExpenseExampleYear01 686
3 Years rr_ExpenseExampleYear03 972
5 Years rr_ExpenseExampleYear05 1,279
10 Years rr_ExpenseExampleYear10 2,148
1 Year rr_ExpenseExampleNoRedemptionYear01 686
3 Years rr_ExpenseExampleNoRedemptionYear03 972
5 Years rr_ExpenseExampleNoRedemptionYear05 1,279
10 Years rr_ExpenseExampleNoRedemptionYear10 2,148
2003 rr_AnnualReturn2003 29.57% [1]
2004 rr_AnnualReturn2004 15.99% [1]
2005 rr_AnnualReturn2005 3.89% [1]
2006 rr_AnnualReturn2006 21.53% [1]
2007 rr_AnnualReturn2007 (5.22%) [1]
2008 rr_AnnualReturn2008 (35.78%) [1]
2009 rr_AnnualReturn2009 83.61% [1]
2010 rr_AnnualReturn2010 17.40% [1]
2011 rr_AnnualReturn2011 (18.95%) [1]
Annual Return 2012 rr_AnnualReturn2012 33.35% [1]
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter:
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 37.73%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter:
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (25.92%)
One Year rr_AverageAnnualReturnYear01 26.02%
Five Years rr_AverageAnnualReturnYear05 7.17%
Ten Years rr_AverageAnnualReturnYear10 9.78%
Since Inception rr_AverageAnnualReturnSinceInception   
Prudential Financial Services Fund | 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_MaximumDeferredSalesChargeOverOfferingPrice 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 0.75%
+ Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
+ Other expenses rr_OtherExpensesOverAssets 0.36%
= Total annual Fund operating expenses rr_ExpensesOverAssets 2.11%
- Fee waiver or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets none
= Net annual Fund operating expenses rr_NetExpensesOverAssets 2.11%
1 Year rr_ExpenseExampleYear01 714
3 Years rr_ExpenseExampleYear03 961
5 Years rr_ExpenseExampleYear05 1,234
10 Years rr_ExpenseExampleYear10 2,179
1 Year rr_ExpenseExampleNoRedemptionYear01 214
3 Years rr_ExpenseExampleNoRedemptionYear03 661
5 Years rr_ExpenseExampleNoRedemptionYear05 1,134
10 Years rr_ExpenseExampleNoRedemptionYear10 2,179
One Year rr_AverageAnnualReturnYear01 27.45%
Five Years rr_AverageAnnualReturnYear05 7.50%
Ten Years rr_AverageAnnualReturnYear10 9.62%
Since Inception rr_AverageAnnualReturnSinceInception   
Prudential Financial Services Fund | 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_MaximumDeferredSalesChargeOverOfferingPrice 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 0.75%
+ Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
+ Other expenses rr_OtherExpensesOverAssets 0.36%
= Total annual Fund operating expenses rr_ExpensesOverAssets 2.11%
- Fee waiver or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets none
= Net annual Fund operating expenses rr_NetExpensesOverAssets 2.11%
1 Year rr_ExpenseExampleYear01 314
3 Years rr_ExpenseExampleYear03 661
5 Years rr_ExpenseExampleYear05 1,134
10 Years rr_ExpenseExampleYear10 2,441
1 Year rr_ExpenseExampleNoRedemptionYear01 214
3 Years rr_ExpenseExampleNoRedemptionYear03 661
5 Years rr_ExpenseExampleNoRedemptionYear05 1,134
10 Years rr_ExpenseExampleNoRedemptionYear10 2,441
One Year rr_AverageAnnualReturnYear01 31.35%
Five Years rr_AverageAnnualReturnYear05 7.64%
Ten Years rr_AverageAnnualReturnYear10 9.61%
Since Inception rr_AverageAnnualReturnSinceInception   
Prudential Financial Services Fund | 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_MaximumDeferredSalesChargeOverOfferingPrice 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 0.75%
+ Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.75%
+ Other expenses rr_OtherExpensesOverAssets 0.36%
= Total annual Fund operating expenses rr_ExpensesOverAssets 1.86%
- Fee waiver or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.25%)
= Net annual Fund operating expenses rr_NetExpensesOverAssets 1.61%
1 Year rr_ExpenseExampleYear01 164
3 Years rr_ExpenseExampleYear03 561
5 Years rr_ExpenseExampleYear05 983
10 Years rr_ExpenseExampleYear10 2,159
1 Year rr_ExpenseExampleNoRedemptionYear01 164
3 Years rr_ExpenseExampleNoRedemptionYear03 561
5 Years rr_ExpenseExampleNoRedemptionYear05 983
10 Years rr_ExpenseExampleNoRedemptionYear10 2,159
One Year rr_AverageAnnualReturnYear01   
Five Years rr_AverageAnnualReturnYear05   
Ten Years rr_AverageAnnualReturnYear10   
Since Inception rr_AverageAnnualReturnSinceInception   
Inception Date rr_AverageAnnualReturnInceptionDate Feb. 03, 2012
Prudential Financial Services Fund | 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_MaximumDeferredSalesChargeOverOfferingPrice 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 0.75%
+ Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
+ Other expenses rr_OtherExpensesOverAssets 0.36%
= Total annual Fund operating expenses rr_ExpensesOverAssets 1.11%
- Fee waiver or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets none
= Net annual Fund operating expenses rr_NetExpensesOverAssets 1.11%
1 Year rr_ExpenseExampleYear01 113
3 Years rr_ExpenseExampleYear03 353
5 Years rr_ExpenseExampleYear05 612
10 Years rr_ExpenseExampleYear10 1,352
1 Year rr_ExpenseExampleNoRedemptionYear01 113
3 Years rr_ExpenseExampleNoRedemptionYear03 353
5 Years rr_ExpenseExampleNoRedemptionYear05 612
10 Years rr_ExpenseExampleNoRedemptionYear10 1,352
One Year rr_AverageAnnualReturnYear01 33.72%
Five Years rr_AverageAnnualReturnYear05 8.72%
Ten Years rr_AverageAnnualReturnYear10 10.71%
Since Inception rr_AverageAnnualReturnSinceInception   
Prudential Financial Services Fund | Return After Taxes on Distributions | Class A
  
Risk/Return: rr_RiskReturnAbstract  
One Year rr_AverageAnnualReturnYear01 25.42%
Five Years rr_AverageAnnualReturnYear05 6.84%
Ten Years rr_AverageAnnualReturnYear10 8.55%
Since Inception rr_AverageAnnualReturnSinceInception   
Prudential Financial Services Fund | Return After Taxes on Distribution and Sale of Fund Shares | Class A
  
Risk/Return: rr_RiskReturnAbstract  
One Year rr_AverageAnnualReturnYear01 17.70%
Five Years rr_AverageAnnualReturnYear05 6.19%
Ten Years rr_AverageAnnualReturnYear10 8.22%
Since Inception rr_AverageAnnualReturnSinceInception   
Prudential Financial Services Fund | MSCI World Financials ex-Real Estate Index (reflects no deduction for fees, expenses or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
One Year rr_AverageAnnualReturnYear01 29.58%
Five Years rr_AverageAnnualReturnYear05 (8.75%)
Ten Years rr_AverageAnnualReturnYear10 2.40%
Since Inception rr_AverageAnnualReturnSinceInception   
Prudential Financial Services Fund | S&P Composite 1500 Index (reflects no deduction for fees, expenses or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
One Year rr_AverageAnnualReturnYear01 16.17%
Five Years rr_AverageAnnualReturnYear05 2.07%
Ten Years rr_AverageAnnualReturnYear10 7.51%
Since Inception rr_AverageAnnualReturnSinceInception   
Prudential Financial Services Fund | Lipper Global Financial Services Funds Average (reflects no deduction for fees, expenses or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
One Year rr_AverageAnnualReturnYear01 26.45%
Five Years rr_AverageAnnualReturnYear05 (2.33%)
Ten Years rr_AverageAnnualReturnYear10 6.65%
Since Inception rr_AverageAnnualReturnSinceInception   
[1] These annual total returns do not include sales charges. If the sales charges were included, the annual total returns would be lower than those shown. Without the distribution and service (12b-1) fee waiver of 0.05% (which terminated effective April 1, 2008), the annual returns would have been lower, too.