v3.22.2.2
Label Element Value
Risk Return Abstract rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName Prudential Government Money Market Fund, Inc.
Prospectus Date rr_ProspectusDate Sep. 29, 2022
PGIM Government Money Market 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 maximum current income consistent with stability of capital and the maintenance of liquidity.
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 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 buy and hold shares of the Fund. 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.
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>
Expense Example [Heading] rr_ExpenseExampleHeading <span style="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. 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.
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="font-family:Arial;font-size:9.70pt;font-weight:bold;">Principal Investment Strategies. </span>
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock The Fund invests at least 99.5% of its total assets in cash, government securities, and/or repurchase agreements that are fully collateralized with cash or government securities. Government securities include U.S. Treasury bills, notes, and other obligations issued or guaranteed as to principal and interest by the U.S. Government or its agencies or instrumentalities. The Fund has a policy to invest under normal conditions 80% of its net assets in government securities and/or repurchase agreements that are collateralized by government securities. The Fund seeks to maintain a stable net asset value of $1.00 per share. The Fund will invest only in securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulations. The Fund seeks to invest in securities that present minimal credit risk. The Fund may invest significantly in securities with floating or variable rates of interest.In managing the Fund’s assets, the subadviser uses a combination of top-down economic analysis and bottom-up research in conjunction with proprietary quantitative models and risk management systems. In the top-down economic analysis, the subadviser develops views on economic, policy and market trends. In its bottom-up research, the subadviser develops an internal rating and outlook on issuers. The rating and outlook are determined based on a thorough review of the financial health and trends of the issuer. The subadviser may also consider investment factors such as expected total return, yield, spread and potential for price appreciation as well as credit quality, maturity and risk.
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. You could lose money by investing in the Fund. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund’s sponsor has no legal obligation to provide financial support to the Fund, and you should not expect that the sponsor will provide financial support to the Fund at any time. 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.Adjustable and Floating Rate Securities Risk. The value of adjustable and floating rate securities may lag behind the value of fixed rate securities when interest rates change. Such securities may be subject to extended settlement periods (longer than seven days) and in unusual market conditions, with a high volume of shareholder redemptions, may present a risk of loss to the Fund or may impair the Fund’s ability satisfy shareholder redemption requests.Credit Risk. This is the risk that the issuer, the guarantor or the insurer of a fixed income security, or the counterparty to a contract, may be unable or unwilling to make timely principal and interest payments, or to otherwise honor its obligations. Additionally, fixed income securities could lose value due to a loss of confidence in the ability of the issuer, guarantor, insurer or counterparty to pay back debt. The lower the credit quality of a bond, the more sensitive it is to credit risk.Debt Obligations Risk. Debt obligations are subject to credit risk, market risk and interest rate risk. The Fund's holdings, share price, yield and total return may also fluctuate in response to bond market movements. The value of bonds may decline for issuer-related reasons, including management performance, financial leverage and reduced demand for the issuer’s goods and services. Certain types of fixed income obligations also may be subject to “call and redemption risk,”which is the risk that the issuer may call a bond held by the Fund for redemption before it matures and the Fund may not be able to reinvest at the same rate of interest and therefore would earn less income.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.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. Active and frequent trading of Fund securities can increase expenses.Interest Rate Risk. The value of your investment may go down when interest rates rise. A rise in rates tends to have a greater impact on the prices of longer term or duration debt securities. For example, a fixed income security with a duration of three years is expected to decrease in value by approximately 3% if interest rates increase by 1%. This is referred to as “duration risk. When interest rates fall, the issuers of debt obligations may prepay principal more quickly than expected, and the Fund may be required to reinvest the proceeds at a lower interest rate. This is referred to as “prepayment risk.” When interest rates rise, debt obligations may be repaid more slowly than expected, and the value of the Fund's holdings may fall sharply. This is referred to as “extension risk.” The Fund may lose money if short-term or long-term interest rates rise sharply or in a manner not anticipated by the subadviser.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.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.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.Money Market Fund Risk. There is no assurance that the Fund will maintain a net asset value of $1.00 per share on a continuous basis. Furthermore, there can be no assurance that the Fund’s affiliates will purchase distressed assets from the Fund, make capital infusions, enter into capital support agreements or take other actions to ensure that the Fund maintains a net asset value of $1.00 per share. In the event any money market fund fails to maintain a stable net asset value, other money market funds, including the Fund, could face a universal risk of increased redemption pressures, potentially jeopardizing the stability of their net asset values. In general, certain other money market funds have in the past failed to maintain stable net asset values and there can be no assurance that such failures and resulting redemption pressures will not occur in the future. The SEC has proposed amendments to the rules applicable to money market funds, which, if adopted as proposed, could change the investment strategies, operations, and/or liquidity for certain money market funds.Redemption Risk. The Fund may experience heavy redemptions, particularly during periods of declining or illiquid markets, that could cause the Fund to liquidate its assets at inopportune times or at a loss or depressed value and that could affect the Fund’s ability to maintain a $1.00 share price.Repurchase Agreements Risk. Repurchase agreements could involve certain risks in the event of default or insolvency of the seller, including losses and possible delays or restrictions upon the Fund’s ability to dispose of the underlying securities. To the extent that, in the meantime, the value of the securities that the Fund has purchased has decreased, the Fund could experience a loss.U.S. Government and Agency Securities Risk. U.S. Government and agency securities are subject to market risk, interest rate risk and credit risk. Not all U.S. Government securities are insured or guaranteed by the full faith and credit of the U.S. Government; some are only insured or guaranteed by the issuing agency, which must rely on its own resources to repay the debt. Some agency securities carry no guarantee whatsoever and the risk of default associated with these securities would be borne by the Fund. The maximum potential liability of the issuers of some U.S. Government securities held by the Fund may greatly exceed their current resources, including their legal right to support from the U.S. Treasury. No assurance can be given that the U.S. Government would provide financial support to any such issuers if it is not obligated to do so by law. It is possible that these issuers will not have the funds to meet their payment obligations in the future. In addition, the value of U.S. Government securities may be affected by changes in the credit rating of the U.S. Government.Yield Risk. The amount of income received by the Fund will go up or down depending on day-to-day variations in short-term interest rates, and when interest rates are very low the Fund’s expenses could absorb all or a significant portion of the Fund’s income. If interest rates increase, the Fund’s yield may not increase proportionately. For example, the Fund’s investment manager may discontinue any temporary voluntary fee limitation.
Risk Lose Money [Text] rr_RiskLoseMoney <span style="color:#000000;font-family:Arial;font-size:9.70pt;">You could lose money by investing in the Fund.</span>
Risk Money Market Fund May Not Preserve Dollar [Text] rr_RiskMoneyMarketFundMayNotPreserveDollar <span style="color:#000000;font-family:Arial;font-size:9.70pt;"> Although the Fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so.</span>
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution <span style="color:#000000;font-family:Arial;font-size:9.70pt;"> An </span><span style="color:#000000;font-family:Arial;font-size:9.70pt;">investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</span>
Risk Money Market Fund Sponsor May Not Provide Support [Text] rr_RiskMoneyMarketFundSponsorMayNotProvideSupport <span style="color:#000000;font-family:Arial;font-size:9.70pt;"> The Fund’s sponsor has no legal obligation to provide financial support to the Fund, and you </span><span style="color:#000000;font-family:Arial;font-size:9.70pt;">should not expect that the sponsor will provide financial support to the Fund at any time. </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 the last 10 calendar years. The following table shows the average annual returns of each of the Fund’s share classes. The bar chart and table demonstrate the risk of investing in the Fund by showing how returns can change from year to year.Prior to March 30, 2016, the Fund operated as a prime money market fund and invested in certain types of securities that as a government money market fund, the Fund no longer holds.  Consequently, the performance information below may have been different if the current investment limitations had been in effect prior to the Fund’s conversion to a government money market fund.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 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 bar chart shows the Fund's performance for Class Z shares for the last 10 calendar years. The following table shows the average annual returns of each of the Fund’s share classes. 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;">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:0.50%2ndQuarter 20190.00%2ndQuarter 20141 The total return of the Fund’s Class Z shares for the period from January 1, 2022 throughJune 30, 2022was0.08%.
Performance Table Heading rr_PerformanceTableHeading <span style="font-family:Arial;font-size:7.76pt;font-weight:bold;margin-left:3pt;">Average Annual Total Returns % (as of 12-31-</span><span style="font-family:Arial;font-size:7.76pt;font-weight:bold;">21)</span><span style="font-family:Arial;font-size:5pt;font-weight:bold;position:relative;top:-3.25pt;">1</span>
Money Market Seven Day Yield, Caption [Text] rr_MoneyMarketSevenDayYieldCaption <span style="font-family:Arial;font-size:7.76pt;font-weight:bold;margin-left:0.0pt;">7 Day Current Yield % (as of 12-31-21)</span><span style="font-family:Arial;font-size:5pt;font-weight:bold;margin-left:0.0pt;position:relative;top:-3.25pt;">1</span>
PGIM Government Money Market Fund | A  
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 $ 15
Management fee rr_ManagementFeesOverAssets 0.32%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.125%
Other expenses rr_OtherExpensesOverAssets 0.185%
Total annual Fund operating expenses rr_ExpensesOverAssets 0.63%
1 Year rr_ExpenseExampleYear01 $ 64
3 Years rr_ExpenseExampleYear03 202
5 Years rr_ExpenseExampleYear05 351
10 Years rr_ExpenseExampleYear10 $ 786
One Year rr_AverageAnnualReturnYear01 0.08% [1]
Five Years rr_AverageAnnualReturnYear05 0.68% [1]
Ten Years rr_AverageAnnualReturnYear10 0.35% [1]
Money Market Seven Day Yield rr_MoneyMarketSevenDayYield 0.01% [1]
PGIM Government Money Market 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 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 $ 15
Management fee rr_ManagementFeesOverAssets 0.32%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.32%
Total annual Fund operating expenses rr_ExpensesOverAssets 0.64%
1 Year rr_ExpenseExampleYear01 $ 65
3 Years rr_ExpenseExampleYear03 205
5 Years rr_ExpenseExampleYear05 357
10 Years rr_ExpenseExampleYear10 $ 795
One Year rr_AverageAnnualReturnYear01 0.12% [1]
Five Years rr_AverageAnnualReturnYear05 0.69% [1]
Ten Years rr_AverageAnnualReturnYear10 0.35% [1]
Money Market Seven Day Yield rr_MoneyMarketSevenDayYield 0.01% [1]
PGIM Government Money Market 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 [2]
Management fee rr_ManagementFeesOverAssets 0.32%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.10%
Total annual Fund operating expenses rr_ExpensesOverAssets 0.42%
1 Year rr_ExpenseExampleYear01 $ 43
3 Years rr_ExpenseExampleYear03 135
5 Years rr_ExpenseExampleYear05 235
10 Years rr_ExpenseExampleYear10 $ 530
2012 rr_AnnualReturn2012 0.02%
2013 rr_AnnualReturn2013 0.01%
2014 rr_AnnualReturn2014 0.01%
2015 rr_AnnualReturn2015 0.01%
2016 rr_AnnualReturn2016 0.02%
2017 rr_AnnualReturn2017 0.37%
2018 rr_AnnualReturn2018 1.46%
2019 rr_AnnualReturn2019 1.83%
2020 rr_AnnualReturn2020 0.26%
2021 rr_AnnualReturn2021 0.08%
Year to Date Return, Label rr_YearToDateReturnLabel <span style="font-family:Arial;font-size:5pt;margin-left:0.0pt;position:relative;top:-3.25pt;">1</span><span style="font-family:Arial;font-size:7.76pt;margin-left:0.0pt;"> The total return of the Fund’s Class Z shares for the period from January 1, 2022 through</span>
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Jun. 30, 2022
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 0.08%
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, 2019
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.50%
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 Jun. 30, 2014
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
One Year rr_AverageAnnualReturnYear01 0.08% [1]
Five Years rr_AverageAnnualReturnYear05 0.80% [1]
Ten Years rr_AverageAnnualReturnYear10 0.41% [1]
Money Market Seven Day Yield rr_MoneyMarketSevenDayYield 0.01% [1]
[1] The Fund's returns and yields are after deduction of expenses.
[2] Direct Transfer Agent Accounts holding under $10,000 of Class Z shares are subject to the $15 fee.