v3.22.2.2
Label Element Value
Risk Return Abstract rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName Prudential Investment Portfolios 8
Prospectus Date rr_ProspectusDate Nov. 30, 2022
PGIM Quant Solutions Stock Index Fund  
Risk Return Abstract rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading <span style="color:#545454;font-family:Arial;font-size:13.58pt;">FUND SUMMARY</span>
Objective [Heading] rr_ObjectiveHeading <span style="color:#000000;font-family:Arial;font-size:9.70pt;font-weight:bold;text-transform:uppercase;">INVESTMENT OBJECTIVE</span>
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock The investment objective of the Fund is to provide investment results that correspond to the price and yield performance of the S&P 500 Index.
Expense [Heading] rr_ExpenseHeading <span style="color:#000000;font-family:Arial;font-size:9.70pt;font-weight:bold;text-transform:uppercase;">FUND FEES AND EXPENSES</span>
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock The tables below describe the sales charges, fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may be required to pay commissions to a broker for transactions in Class Z shares, which are not reflected in the table or the example below. You may qualify for sales charge discounts if you and an eligible group of related investors purchase, or agree to purchase in the future, $250,000 or more in shares of the Fund or other funds in the PGIM Funds family. More information about these discounts as well as other waivers or discounts is available from your financial professional and is explained in Reducing or Waiving Class A's and Class C’s Sales Charges on page 23 of the Fund's Prospectus, Appendix A: Waivers and Discounts Available From Certain Financial Intermediaries on page 44 of the Fund's Prospectus and in Rights of Accumulation on page 43 of the Fund's Statement of Additional Information (“SAI”).
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption <span style="color:#000000;font-family:Arial;font-size:7.76pt;font-weight:bold;margin-left:3pt;">Shareholder Fees (fees paid directly from your investment)</span>
Operating Expenses Caption [Text] rr_OperatingExpensesCaption <span style="color:#000000;font-family:Arial;font-size:7.76pt;font-weight:bold;margin-left:3pt;">Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)</span>
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination <span style="color:#000000;font-family:Arial;font-size:7.76pt;">January 31, 2024</span>
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading <span style="color:#000000;font-family:Arial;font-size:9.70pt;font-weight:bold;">Portfolio Turnover. </span>
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 3% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 3.00%
Expenses Deferred Charges [Text Block] rr_ExpensesDeferredChargesTextBlock Investors who purchase $1 million or more of Class A shares and sell these shares within 12 months of purchase are also subject to a contingent deferred sales charge (“CDSC”) of 1.00%, although they are not subject to an initial sales charge. The CDSC is waived for certain retirement and/or benefit plans.Class C shares are sold with a CDSC of 1.00% on sales made within 12 months of purchase.
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts <span style="color:#000000;font-family:Arial;font-size:9.70pt;"> You may qualify for sales charge discounts if you and an eligible group of related investors purchase, or agree to purchase in the future, </span><span style="color:#000000;font-family:Arial;font-size:9.70pt;">$250,000</span><span style="color:#000000;font-family:Arial;font-size:9.70pt;"> or more in shares of the Fund or other funds in the PGIM Funds family.</span>
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 250,000
Expense Example [Heading] rr_ExpenseExampleHeading <span style="color:#000000;font-family:Arial;font-size:9.70pt;font-weight:bold;">Example. </span>
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 (except that fee waivers or reimbursements, if any, are only reflected in the 1-Year figures) and that all dividends and distributions are reinvested. Your actual costs may be higher or lower.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption <span style="color:#000000;font-family:Arial;font-size:7.76pt;font-weight:bold;margin-left:3pt;">If Shares Are Redeemed</span>
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption <span style="color:#000000;font-family:Arial;font-size:7.76pt;font-weight:bold;margin-left:3pt;">If Shares Are Not Redeemed</span>
Strategy [Heading] rr_StrategyHeading <span style="color:#000000;font-family:Arial;font-size:9.70pt;font-weight:bold;text-transform:uppercase;">INVESTMENTS, RISKS AND PERFORMANCE</span><span style="color:#000000;font-family:Arial;font-size:9.70pt;font-weight:bold;">Principal Investment Strategies. </span>
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock The Fund intends under normal circumstances to invest over 80% of its investable assets in securities included in the S&P 500 Index in approximately the same proportions as those of the S&P 500 Index. The term “investable assets” in this Prospectus 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.The Fund attempts to replicate the security composition of the S&P 500 Index by holding each stock in the S&P 500 Index in about the same proportion as represented in the Index itself. The Fund employs a “passively managed”—or index—investment approach. The Fund is not actively managed by portfolio managers who buy and sell securities based on research and analysis. The S&P 500 Index is an unmanaged index of over 500 stocks of large U.S. public companies. It gives a broad look at how stock prices in the United States have performed.The Fund’s subadviser will try to minimize the difference between the investment results of the Fund and that of the S&P 500 Index. The Fund may use various investment techniques, including investing in exchange-traded funds (“ETFs”) and derivatives such as stock index futures to equitize cash and enhance portfolio liquidity.
Risk [Heading] rr_RiskHeading <span style="color:#000000;font-family:Arial;font-size:9.70pt;font-weight:bold;">Principal Risks. </span>
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock All investments have risks to some degree. The value of your investment in the Fund, as well as the amount of return you receive on your investment, may fluctuate significantly from day-to-day and over time.You may lose part or all of your investment in the Fund or your investment may not perform as well as other similar investments.An investment in the Fund is not guaranteed to achieve its investment objective; is not a deposit with a bank; and is not insured, endorsed or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The following is a summary description of principal risks of investing in the Fund.The order of the below risk factors does not indicate the significance of any particular risk factor.Economic and Market Events Risk. Events in the U.S. and global financial markets, including actions taken by the U.S. Federal Reserve or foreign central banks to stimulate or stabilize economic growth or the functioning of the securities markets, may at times result in unusually high market volatility, which could negatively impact performance. Relatively reduced liquidity in credit and fixed income markets could adversely affect issuers worldwide.Equity and Equity-Related Securities Risk. Equity and equity-related securities may be subject to changes in value, and their values may be more volatile than those of other asset classes. 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. Different parts of a market can react differently to adverse issuer, market, regulatory, political and economic developments.Increase in Expenses Risk. 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.Index Investment Approach Risk. Since the Fund is passively managed, assets are not allocated from one stock or group of stocks to another based on their prospects, or from stocks into bonds or cash equivalents in an attempt to cushion the impact of a market decline. As a result, the Fund’s performance may be less favorable than that of a portfolio using an active investment strategy. There is no guarantee that the Fund's investment results will have a high degree of correlation to those of the Index. The Fund’s expenses, changes in securities markets, changes in the composition of the Index, errors in index provider data, and the timing of purchases and redemptions of Fund shares, among other things, may affect the correlation between Fund and Index performance. The Fund may not perform as well as other investments if, among other things, the Index declines or performs poorly relative to other related indexes or individual securities or the securities issued by companies that comprise the Index fall out of favor with investors.Large Capitalization Company Risk. Companies with large market capitalizations go in and out of favor based on market and economic conditions. Larger companies tend to be less volatile than companies with smaller market capitalizations. In exchange for this potentially lower risk, the Fund's value may not rise or fall as much as the value of funds that emphasize companies with smaller market capitalizations.Large Shareholder and Large Scale Redemption Risk. Certain individuals, accounts, funds (including funds affiliated with the Manager) or institutions, including the Manager and its affiliates, may from time to time own or control a substantial amount of the Fund’s shares. There is no requirement that these entities maintain their investment in the Fund. There is a risk that such large shareholders or that the Fund’s shareholders generally may redeem all or a substantial portion of their investments in the Fund in a short period of time, which could have a significant negative impact on the Fund’s NAV, liquidity, and brokerage costs. Large redemptions could also result in tax consequences to shareholders and impact the Fund’s ability to implement its investment strategy. The Fund’s ability to pursue its investment objective after one or more large scale redemptions may be impaired and, as a result, the Fund may invest a larger portion of its assets in cash or cash equivalents.Market Disruption and Geopolitical Risks. Market disruption can be caused by economic, financial or political events and factors, including but not limited to, international wars or conflicts (including Russia’s military invasion of Ukraine), geopolitical developments (including trading and tariff arrangements, sanctions and cybersecurity attacks), instability in regions such as Asia, Eastern Europe and the Middle East, terrorism, natural disasters and public health epidemics (including the outbreak of COVID-19 globally).The extent and duration of such events and resulting market disruptions cannot be predicted, but could be substantial and could magnify the impact of other risks to the Fund. These and other similar events could adversely affect the U.S. and foreign financial markets and lead to increased market volatility, reduced liquidity in the securities markets, significant negative impacts on issuers and the markets for certain securities and commodities and/or government intervention. They may also cause short- or long-term economic uncertainties in the United States and worldwide. As a result, whether or not the Fund invests in securities of issuers located in or with significant exposure to the countries directly affected, the value and liquidity of the Fund’s investments may be negatively impacted. Further, due to closures of certain markets and restrictions on trading certain securities, the value of certain securities held by the Fund could be significantly impacted, which could lead to such securities being valued at zero.COVID-19 and the related governmental and public responses have had and may continue to have an impact on the Fund’s investments and net asset value and have led and may continue to lead to increased market volatility and the potential for illiquidity in certain classes of securities and sectors of the market. They have also had and may continue to result in periods of business disruption, business closures, inability to obtain raw materials, supplies and component parts, and reduced or disrupted operations for the issuers in which the Fund invests. The occurrence, reoccurrence and pendency of public health epidemics could adversely affect the economies and financial markets either in specific countries or worldwide.Market Risk. Securities markets may be volatile and the market prices of the Fund’s securities may decline. Securities fluctuate in price based on changes in an issuer’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.Tracking Error Risk. Tracking error is the divergence of the Fund’s performance from that of the Index. Tracking error may occur because of differences between the securities and other instruments held in the Fund’s portfolio and those included in the Index, pricing differences, transaction costs, the Fund’s holding of uninvested cash, differences in timing of the accrual of distributions, tax gains or losses, changes to the Index or the need to meet various new or existing regulatory requirements. This risk may be heightened during times of increased market volatility or other unusual market conditions. Tracking error also may result because the Fund incurs fees and expenses, while the Index does not.
Risk Lose Money [Text] rr_RiskLoseMoney <span style="color:#000000;font-family:Arial;font-size:9.70pt;">You may lose part or all of your investment in the Fund or your investment may not perform as well as other similar investments.</span>
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution <span style="color:#000000;font-family:Arial;font-size:9.70pt;">An investment in the Fund is not guaranteed to achieve its investment objective; is not a deposit with a bank; and is not insured, endorsed or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</span>
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading <span style="color:#000000;font-family:Arial;font-size:9.70pt;font-weight:bold;">Performance.</span>
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock The following bar chart shows the Fund's performance for Class Z shares for each full calendar year of operations or for the last 10 calendar years, whichever is shorter. The following table shows the Fund's average annual returns and also compares the Fund’s performance with the average annual total returns of an index or other benchmark. The bar chart and table demonstrate the risk of investing in the Fund by showing how returns can change from year to year.Past performance (before and after taxes) does not mean that the Fund will achieve similar results in the future.Without the management fee waiver and/or expense reimbursement, if any, the annual total returns would have been lower. Updated Fund performance information, including current net asset value, is available online at www.pgim.com/investments.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns <span style="color:#000000;font-family:Arial;font-size:9.70pt;">The following table shows the Fund's average annual </span><span style="color:#000000;font-family:Arial;font-size:9.70pt;">returns and also compares the Fund’s performance with the average annual total returns of an index or other benchmark. The bar chart and table demonstrate the risk of investing in the Fund by showing how returns can change from year to year.</span>
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress <span style="color:#000000;font-family:Arial;font-size:9.70pt;">www.pgim.com/investments</span>
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture <span style="color:#000000;font-family:Arial;font-size:9.70pt;">Past performance (before and after taxes) does not mean that the Fund will achieve similar results in the future.</span>
Bar Chart [Heading] rr_BarChartHeading Annual Total Returns (Class Z Shares)1
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock Best Quarter:Worst Quarter:20.53%2nd Quarter 2020-19.60%1st Quarter 20201 The total return for Class Z shares from January 1, 2022 toSeptember 30, 2022was-24.01%
Performance Table Heading rr_PerformanceTableHeading <span style="color:#000000;font-family:Arial;font-size:7.76pt;font-weight:bold;margin-left:3pt;">Average Annual Total Returns % (including sales charges) (as of 12-31-21)</span>
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate <span style="color:#000000;font-family:Arial;font-size:7.76pt;">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.</span>
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred <span style="color:#000000;font-family:Arial;font-size:7.76pt;"> 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.</span>
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown <span style="color:#000000;font-family:Arial;font-size:7.76pt;"> After-tax returns are shown only for Class Z shares. After-tax returns for other classes will vary due to differing sales charges and expenses.</span>
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 accounts. After-tax returns are shown only for Class Z shares. After-tax returns for other classes will vary due to differing sales charges and expenses.
PGIM Quant Solutions Stock Index Fund | A  
Risk Return Abstract rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 3.25%
Maximum deferred sales charge (load) (as a percentage of the lower of the original purchase price or the net asset value at redemption) rr_MaximumDeferredSalesChargeOverOther 1.00% [1]
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 fee rr_ManagementFeesOverAssets 0.15%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.30%
Other expenses rr_OtherExpensesOverAssets 0.14%
Total annual Fund operating expenses rr_ExpensesOverAssets 0.59%
Fee waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.07%)
Total annual Fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.52% [2]
1 Year rr_ExpenseExampleYear01 $ 376
3 Years rr_ExpenseExampleYear03 501
5 Years rr_ExpenseExampleYear05 637
10 Years rr_ExpenseExampleYear10 1,032
1 Year rr_ExpenseExampleNoRedemptionYear01 376
3 Years rr_ExpenseExampleNoRedemptionYear03 501
5 Years rr_ExpenseExampleNoRedemptionYear05 637
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,032
One Year rr_AverageAnnualReturnYear01 23.86%
Five Years rr_AverageAnnualReturnYear05 17.12%
Ten Years rr_AverageAnnualReturnYear10 15.59%
InceptionDate rr_AverageAnnualReturnInceptionDate
PGIM Quant Solutions Stock Index Fund | C  
Risk Return Abstract 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 the original purchase price or the net asset value at redemption) rr_MaximumDeferredSalesChargeOverOther 1.00% [3]
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 fee rr_ManagementFeesOverAssets 0.15%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.13%
Total annual Fund operating expenses rr_ExpensesOverAssets 1.28%
Fee waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.07%)
Total annual Fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.21% [2]
1 Year rr_ExpenseExampleYear01 $ 223
3 Years rr_ExpenseExampleYear03 399
5 Years rr_ExpenseExampleYear05 696
10 Years rr_ExpenseExampleYear10 1,348
1 Year rr_ExpenseExampleNoRedemptionYear01 123
3 Years rr_ExpenseExampleNoRedemptionYear03 399
5 Years rr_ExpenseExampleNoRedemptionYear05 696
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,348
One Year rr_AverageAnnualReturnYear01 26.17%
Five Years rr_AverageAnnualReturnYear05 17.13%
Ten Years rr_AverageAnnualReturnYear10 15.23%
InceptionDate rr_AverageAnnualReturnInceptionDate
PGIM Quant Solutions Stock Index Fund | I  
Risk Return Abstract 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 the original purchase price or the net asset value at redemption) 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 fee rr_ManagementFeesOverAssets 0.15%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.11%
Total annual Fund operating expenses rr_ExpensesOverAssets 0.26%
Fee waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.07%)
Total annual Fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.19% [2]
1 Year rr_ExpenseExampleYear01 $ 19
3 Years rr_ExpenseExampleYear03 77
5 Years rr_ExpenseExampleYear05 139
10 Years rr_ExpenseExampleYear10 324
1 Year rr_ExpenseExampleNoRedemptionYear01 19
3 Years rr_ExpenseExampleNoRedemptionYear03 77
5 Years rr_ExpenseExampleNoRedemptionYear05 139
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 324
One Year rr_AverageAnnualReturnYear01 28.43%
Five Years rr_AverageAnnualReturnYear05 18.30%
Ten Years rr_AverageAnnualReturnYear10 16.37%
InceptionDate rr_AverageAnnualReturnInceptionDate
PGIM Quant Solutions Stock Index Fund | Z  
Risk Return Abstract 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 the original purchase price or the net asset value at redemption) 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 [4]
Management fee rr_ManagementFeesOverAssets 0.15%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.16%
Total annual Fund operating expenses rr_ExpensesOverAssets 0.31%
Fee waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.07%)
Total annual Fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.24% [2]
1 Year rr_ExpenseExampleYear01 $ 25
3 Years rr_ExpenseExampleYear03 93
5 Years rr_ExpenseExampleYear05 167
10 Years rr_ExpenseExampleYear10 386
1 Year rr_ExpenseExampleNoRedemptionYear01 25
3 Years rr_ExpenseExampleNoRedemptionYear03 93
5 Years rr_ExpenseExampleNoRedemptionYear05 167
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 386
2012 rr_AnnualReturn2012 15.71%
2013 rr_AnnualReturn2013 32.09%
2014 rr_AnnualReturn2014 13.41%
2015 rr_AnnualReturn2015 1.22%
2016 rr_AnnualReturn2016 11.68%
2017 rr_AnnualReturn2017 21.55%
2018 rr_AnnualReturn2018 (4.59%)
2019 rr_AnnualReturn2019 31.24%
2020 rr_AnnualReturn2020 18.24%
2021 rr_AnnualReturn2021 28.36%
Year to Date Return, Label rr_YearToDateReturnLabel <span style="color:#000000;font-family:Arial;font-size:5pt;margin-left:0.0pt;position:relative;top:-3.25pt;">1</span><span style="color:#000000;font-family:Arial;font-size:7.76pt;margin-left:0.0pt;"> The total return for Class Z shares from January 1, 2022 to</span>
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2022
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn (24.01%)
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel <span style="color:#000000;font-family:Arial;font-size:9.70pt;font-weight:bold;margin-left:0.00pt;">Best Quarter:</span>
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2020
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 20.53%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel <span style="color:#000000;font-family:Arial;font-size:9.70pt;font-weight:bold;margin-left:0.00pt;">Worst Quarter:</span>
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (19.60%)
One Year rr_AverageAnnualReturnYear01 28.36%
Five Years rr_AverageAnnualReturnYear05 18.23%
Ten Years rr_AverageAnnualReturnYear10 16.30%
InceptionDate rr_AverageAnnualReturnInceptionDate
PGIM Quant Solutions Stock Index Fund | R6  
Risk Return Abstract 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 the original purchase price or the net asset value at redemption) 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 fee rr_ManagementFeesOverAssets 0.15%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.06%
Total annual Fund operating expenses rr_ExpensesOverAssets 0.21%
Fee waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.07%)
Total annual Fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.14% [2]
1 Year rr_ExpenseExampleYear01 $ 14
3 Years rr_ExpenseExampleYear03 61
5 Years rr_ExpenseExampleYear05 111
10 Years rr_ExpenseExampleYear10 261
1 Year rr_ExpenseExampleNoRedemptionYear01 14
3 Years rr_ExpenseExampleNoRedemptionYear03 61
5 Years rr_ExpenseExampleNoRedemptionYear05 111
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 261
One Year rr_AverageAnnualReturnYear01 28.48%
Five Years rr_AverageAnnualReturnYear05
Ten Years rr_AverageAnnualReturnYear10
SinceInception rr_AverageAnnualReturnSinceInception 17.62%
InceptionDate rr_AverageAnnualReturnInceptionDate Nov. 28, 2017
PGIM Quant Solutions Stock Index Fund | Return After Taxes on Distributions | Z  
Risk Return Abstract rr_RiskReturnAbstract  
One Year rr_AverageAnnualReturnYear01 25.17%
Five Years rr_AverageAnnualReturnYear05 14.12%
Ten Years rr_AverageAnnualReturnYear10 13.80%
InceptionDate rr_AverageAnnualReturnInceptionDate
PGIM Quant Solutions Stock Index Fund | Return After Taxes on Distributions and Sale of Fund Shares | Z  
Risk Return Abstract rr_RiskReturnAbstract  
One Year rr_AverageAnnualReturnYear01 18.98%
Five Years rr_AverageAnnualReturnYear05 13.77%
Ten Years rr_AverageAnnualReturnYear10 13.12%
InceptionDate rr_AverageAnnualReturnInceptionDate
PGIM Quant Solutions Stock Index Fund | S&P 500 Index  
Risk Return Abstract rr_RiskReturnAbstract  
One Year rr_AverageAnnualReturnYear01 28.70%
Five Years rr_AverageAnnualReturnYear05 18.47%
Ten Years rr_AverageAnnualReturnYear10 16.54%
[1] Investors who purchase $1 million or more of Class A shares and sell these shares within 12 months of purchase are also subject to a contingent deferred sales charge (“CDSC”) of 1.00%, although they are not subject to an initial sales charge. The CDSC is waived for certain retirement and/or benefit plans.
[2] PGIM Investments LLC (“PGIM Investments”) has contractually agreed through January 31, 2024 to waive a portion of its management fee so that the effective management fee for the Fund will be 0.08% of the average daily net assets of the Fund. This waiver may not be terminated prior to January 31, 2024 without the prior approval of the Fund’s Board of Trustees. Separately, PGIM Investments has contractually agreed, through January 31, 2024, to limit transfer agency, shareholder servicing, sub-transfer agency, and blue sky fees, as applicable, to the extent that such fees cause the Total Annual Fund Operating Expenses to exceed 0.18% of average daily net assets for Class R6 shares. This contractual expense limitation excludes interest, brokerage, taxes (such as income and foreign withholding taxes, stamp duty and deferred tax expenses), acquired fund fees and expenses, extraordinary expenses, and certain other Fund expenses such as dividend and interest expense and broker charges on short sales. Where applicable, PGIM Investments agrees to waive management fees or shared operating expenses on any share class to the same extent that it waives such expenses on any other share class. In addition, Total Annual Fund Operating Expenses for Class R6 shares will not exceed Total Annual Fund Operating Expenses for Class Z shares. Fees and/or expenses waived and/or reimbursed by PGIM Investments for the purpose of preventing the expenses from exceeding a certain expense ratio limit may be recouped by PGIM Investments within the same fiscal year during which such waiver and/or reimbursement is made if such recoupment can be realized without exceeding the expense limit in effect at the time of the recoupment for that fiscal year. The waiver and expense limitation may not be terminated prior to January 31, 2024 without the prior approval of the Fund’s Board of Trustees.
[3] Class C shares are sold with a CDSC of 1.00% on sales made within 12 months of purchase.
[4] Direct Transfer Agent Accounts holding under $10,000 of Class Z shares are subject to the $15 fee.