485BPOS

As filed with the Securities and Exchange Commission on October 10, 2012

Securities Act Registration No. 333-112406

Investment Company Act Registration No. 811-02619

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. 57 (X)

and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940

POST-EFFECTIVE AMENDMENT NO. 48 (X)

Check appropriate box or boxes

Prudential MoneyMart Assets, 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 October, 2012.

Prudential MoneyMart Assets, 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	October 10, 2012

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

XML

Prudential MoneyMart Assets, Inc.

Prudential MoneyMart Assets, Inc.

INVESTMENT OBJECTIVE

The investment objective of the Fund is maximum current income consistent with stability of capital and the maintenance of liquidity.

FUND FEES AND EXPENSES

The tables below describe the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Prudential MoneyMart Assets, Inc. (USD $)	Class A	Class B	Class C	Class X	Class Z
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	none	none	none	none	none
Maximum deferred sales charge (load) (as a percentage of the lower of original purchase price or sale proceeds)	none	none	none	none	none
Maximum sales charge (load) imposed on reinvested dividends and other distributions	none	none	none	none	none
Redemption fee	none	none	none	none	none
Exchange fee	none	none	none	none	none
Maximum account fee (accounts under $10,000)	15	15	15	15	none

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

Annual Fund Operating Expenses Prudential MoneyMart Assets, Inc.	Class A	Class B	Class C	Class X	Class Z
Management fees	0.314%	0.314%	0.314%	0.314%	0.314%
+ Distribution and service (12b-1) fees	0.125%	none	none	1.00%	none
+ Other expenses	0.167%	0.167%	0.167%	0.167%	0.167%
= Total annual Fund operating expenses	0.606%	0.481%	0.481%	1.481%	0.481%

Example.

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.

If Shares Are Redeemed

Expense Example Prudential MoneyMart Assets, Inc. (USD $)	1 Year	3 Years	5 Years	10 Years
Class A	62	194	338	757
Class B	49	154	269	659
Class C	49	154	269	605
Class X	151	468	808	1,770
Class Z	49	154	269	605

If Shares Are Not Redeemed

Expense Example, No Redemption Prudential MoneyMart Assets, Inc. (USD $)	1 Year	3 Years	5 Years	10 Years
Class A	62	194	338	757
Class B	49	154	269	659
Class C	49	154	269	605
Class X	151	468	808	1,770
Class Z	49	154	269	605

INVESTMENTS, RISKS AND PERFORMANCE

Principal Investment Strategies.

We look for investments that we think will provide a high level of current income. To achieve our objective, we invest in short-term money market instruments such as obligations issued by the U.S. Government, its agencies and instrumentalities, commercial paper, asset-backed securities, funding agreements, variable rate demand notes, bills, notes and other obligations issued by banks, corporations and other companies (including trust structures), and obligations issued by foreign banks, companies or foreign governments, and municipal notes. The Fund will invest only in instruments with remaining maturities of thirteen months or less and which are denominated in U.S. dollars. The Fund may invest in longer-term securities that are accompanied by demand features which will shorten the effective maturity of the securities to 397 days or less.

Although the Fund seeks to maintain a stable net asset value (NAV) of $1 per share, there can be no guarantee that it will always be able to do so. Additionally, you should be aware that a very small number of money market funds in other fund complexes have, in the past, "broken the buck," which means that investors did not receive $1 per share for their investment in those funds, and any money market fund may do so in the future. You should also be aware that the Fund's investment manager and its affiliates are under no obligation to provide financial support to the Fund or take other measures to ensure that you receive $1 per share for your investment in the Fund. You should not invest in the Fund with the expectation that any such action will be taken.

Principal Risks of Investing in the Fund.

All investments have risks to some degree. Please remember that an investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Although the Fund seeks to preserve the value of your investment at $1 per share, it is possible to lose money by investing in the Fund.

Recent Market Events. The equity and debt capital markets in the United States and internationally have experienced unprecedented volatility. The financial crisis has caused a significant decline in the value and liquidity of many securities. This environment could make identifying investment risks and opportunities especially difficult for the investment subadviser. These market conditions may continue or get worse. In response to the crisis, the U.S. and other governments and the Federal Reserve and certain foreign central banks have taken steps to support financial markets. The withdrawal of this support could negatively affect the value and liquidity of certain securities. In addition, legislation recently enacted in the United States calls for changes in many aspects of financial regulation. The impact of the legislation on the markets, and the practical implications for market participants, may not be 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.

Debt Obligations. 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.

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, the 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 longer the maturity and the lower the credit quality of a bond, the more sensitive it is to credit risk.

Market Risk. Your investment in Fund shares represents an indirect investment in the securities owned by the Fund. The value of these securities, like other investments, may move up or down, sometimes rapidly and unpredictably. Securities markets are volatile. Your Fund shares at any point in time may be worth less than what you invested, even after taking into account the reinvestment of Fund dividends and distributions. Regardless of how well an individual investment performs, if financial markets go down, you could lose money.

Interest Rate Risk. This is the risk that the securities in which the Fund invests could lose value because of interest rate changes. For example, bonds tend to decrease in value if interest rates rise. Debt obligations with longer maturities generally are more sensitive to interest rate changes. In addition, short-term and long-term interest rates do not necessarily move in the same direction or by the same amount. An instrument's reaction to interest rate changes depends on the timing of its interest and principal payments and the current interest rate for each of those time periods. Instruments with floating interest rates can be less sensitive to interest rate changes. Certain types of debt obligations are also subject to prepayment and extension 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."

Management Risk. Actively managed mutual funds are subject to management risk. The subadviser will apply investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these techniques will produce the desired results. Additionally, the securities selected by the subadviser may underperform the markets in general, the Fund's benchmark and other mutual funds with similar investment objectives.

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 share price. In addition, the Fund may suspend redemptions when permitted by applicable regulations.

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. In addition, the recent adoption of more stringent regulations governing the management of money market funds could have a negative effect on the Fund's yield.

Risks Associated with Concentration in the Banking Industry. The Fund may invest a significant portion of its assets in obligations that are issued or backed by U.S. and non-U.S. banks, and thus will be more susceptible to negative events affecting the worldwide banking industry.

Amortized Cost Method. There is also a risk that the market price for a security could be lower than the value attributed to the security through the amortized cost valuation procedures we follow. Such an event could affect our ability to maintain a net asset value of $1 per share. In the event that the Fund's Board were to determine that the extent of the deviation between the Fund's per share net asset value determined using amortized cost and its market-based net asset value per share may result in a material dilution or other unfair results to shareholders or potential investors, the Board will cause the Fund to take such action as it deems appropriate to eliminate or reduce to the extent practicable such dilution or unfair results, including the potential suspension of redemption of Fund shares and liquidation of the Fund, as permitted under Rule 22e-3 under the Investment Company Act of 1940.

For more information on the risks of investing in this Fund, please see How the Fund Invests—Investment Risks in the Prospectus and Investment Risks and Considerations in the SAI.

The Fund's Past Performance.

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.

Annual Total Returns (Class A Shares)¹

Best Quarter:		Worst Quarter:
1.25%	3rd Quarter 2007	0.004%	4th Quarter 2011

Average Annual Total Returns % (as of 12-31-11)¹

Average Annual Total Returns Prudential MoneyMart Assets, Inc.		One Year	Five Years	Ten Years	Since Inception	Inception Date
Class A shares	[1]	0.02%	1.54%	1.73%
Class B shares	[1]	0.02%	1.60%		2.20%	Mar. 14, 2005
Class C shares	[1]	0.02%	1.60%		2.20%	Mar. 14, 2005
Class X shares	[1]	0.02%			0.15%	Oct. 27, 2008
Class Z shares	[1]	0.02%	1.60%	1.83%
Lipper Money Market Average (A shares)	[1]	0.02%	1.36%	1.56%
Lipper Money Market Institutional Average (Z shares)	[1]	0.04%	1.57%	1.88%

7 Day Current Yield % (as of 12-31-11)¹

Average Annual Total Returns Prudential MoneyMart Assets, Inc.		7 Day Current Yield %
Class A shares	[1]	0.01%
Class B shares	[1]	0.01%
Class C shares	[1]	0.01%
Class X shares	[1]	0.01%
Class Z shares	[1]	0.01%
iMoneyNet, Inc. Prime Retail Average	[1]	0.01%

[1] The total return for the Fund's Class A shares from January 1, 2012 to June 30, 2012 was 0.01%.

[1] The Fund's returns and yields are after deduction of expenses.

[1] The Fund's returns and yields are after deduction of expenses.

XML

Document and Entity Information	12 Months Ended
	Sep. 28, 2012
Risk/Return:
Document Type	485BPOS
Document Period End Date	Jul. 31, 2012
Registrant Name	PRUDENTIAL MONEYMART ASSETS INC
Central Index Key	0000067590
Amendment Flag	false
Document Creation Date	Sep. 27, 2012
Document Effective Date	Sep. 28, 2012
Prospectus Date	Sep. 28, 2012

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	PRUDENTIAL MONEYMART ASSETS INC
Prospectus Date	rr_ProspectusDate	Sep. 28, 2012
Document Creation Date	dei_DocumentCreationDate	Sep. 27, 2012

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

PRUDENTIAL MONEYMART ASSETS INC

Prospectus Date

rr_ProspectusDate

Sep. 28, 2012

Prudential MoneyMart Assets, Inc.

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Prudential MoneyMart Assets, Inc.

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

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

FUND FEES AND EXPENSES

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The tables below describe the fees and expenses that you may pay if you buy and hold shares of the Fund.

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)

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

Strategy [Heading]

rr_StrategyHeading

INVESTMENTS, RISKS AND PERFORMANCE

Principal Investment Strategies.

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

We look for investments that we think will provide a high level of current income. To achieve our objective, we invest in short-term money market instruments such as obligations issued by the U.S. Government, its agencies and instrumentalities, commercial paper, asset-backed securities, funding agreements, variable rate demand notes, bills, notes and other obligations issued by banks, corporations and other companies (including trust structures), and obligations issued by foreign banks, companies or foreign governments, and municipal notes. The Fund will invest only in instruments with remaining maturities of thirteen months or less and which are denominated in U.S. dollars. The Fund may invest in longer-term securities that are accompanied by demand features which will shorten the effective maturity of the securities to 397 days or less.

Although the Fund seeks to maintain a stable net asset value (NAV) of $1 per share, there can be no guarantee that it will always be able to do so. Additionally, you should be aware that a very small number of money market funds in other fund complexes have, in the past, "broken the buck," which means that investors did not receive $1 per share for their investment in those funds, and any money market fund may do so in the future. You should also be aware that the Fund's investment manager and its affiliates are under no obligation to provide financial support to the Fund or take other measures to ensure that you receive $1 per share for your investment in the Fund. You should not invest in the Fund with the expectation that any such action will be taken.

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 insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Although the Fund seeks to preserve the value of your investment at $1 per share, it is possible to lose money by investing in the Fund.

Recent Market Events. The equity and debt capital markets in the United States and internationally have experienced unprecedented volatility. The financial crisis has caused a significant decline in the value and liquidity of many securities. This environment could make identifying investment risks and opportunities especially difficult for the investment subadviser. These market conditions may continue or get worse. In response to the crisis, the U.S. and other governments and the Federal Reserve and certain foreign central banks have taken steps to support financial markets. The withdrawal of this support could negatively affect the value and liquidity of certain securities. In addition, legislation recently enacted in the United States calls for changes in many aspects of financial regulation. The impact of the legislation on the markets, and the practical implications for market participants, may not be 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.

Debt Obligations. 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.

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, the 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 longer the maturity and the lower the credit quality of a bond, the more sensitive it is to credit risk.

Market Risk. Your investment in Fund shares represents an indirect investment in the securities owned by the Fund. The value of these securities, like other investments, may move up or down, sometimes rapidly and unpredictably. Securities markets are volatile. Your Fund shares at any point in time may be worth less than what you invested, even after taking into account the reinvestment of Fund dividends and distributions. Regardless of how well an individual investment performs, if financial markets go down, you could lose money.

Interest Rate Risk. This is the risk that the securities in which the Fund invests could lose value because of interest rate changes. For example, bonds tend to decrease in value if interest rates rise. Debt obligations with longer maturities generally are more sensitive to interest rate changes. In addition, short-term and long-term interest rates do not necessarily move in the same direction or by the same amount. An instrument's reaction to interest rate changes depends on the timing of its interest and principal payments and the current interest rate for each of those time periods. Instruments with floating interest rates can be less sensitive to interest rate changes. Certain types of debt obligations are also subject to prepayment and extension 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."

Management Risk. Actively managed mutual funds are subject to management risk. The subadviser will apply investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these techniques will produce the desired results. Additionally, the securities selected by the subadviser may underperform the markets in general, the Fund's benchmark and other mutual funds with similar investment objectives.

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 share price. In addition, the Fund may suspend redemptions when permitted by applicable regulations.

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. In addition, the recent adoption of more stringent regulations governing the management of money market funds could have a negative effect on the Fund's yield.

Risks Associated with Concentration in the Banking Industry. The Fund may invest a significant portion of its assets in obligations that are issued or backed by U.S. and non-U.S. banks, and thus will be more susceptible to negative events affecting the worldwide banking industry.

Amortized Cost Method. There is also a risk that the market price for a security could be lower than the value attributed to the security through the amortized cost valuation procedures we follow. Such an event could affect our ability to maintain a net asset value of $1 per share. In the event that the Fund's Board were to determine that the extent of the deviation between the Fund's per share net asset value determined using amortized cost and its market-based net asset value per share may result in a material dilution or other unfair results to shareholders or potential investors, the Board will cause the Fund to take such action as it deems appropriate to eliminate or reduce to the extent practicable such dilution or unfair results, including the potential suspension of redemption of Fund shares and liquidation of the Fund, as permitted under Rule 22e-3 under the Investment Company Act of 1940.

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

Although the Fund seeks to preserve the value of your investment at $1 per share, it is possible to lose money by investing in the Fund.

Risk Money Market Fund [Text]

rr_RiskMoneyMarketFund

Please remember that an investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Although the Fund seeks to preserve the value of your investment at $1 per share, it is possible to lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

Please remember that an investment in the Fund is not insured 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 Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:		Worst Quarter:
1.25%	3rd Quarter 2007	0.004%	4th Quarter 2011

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns % (as of 12-31-11)¹

Money Market Seven Day Yield, Caption [Text]

rr_MoneyMarketSevenDayYieldCaption

7 Day Current Yield % (as of 12-31-11)¹

Prudential MoneyMart Assets, Inc. | Class A

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_ExchangeFee

none

Maximum account fee (accounts under $10,000)

rr_MaximumAccountFee

15

Management fees

rr_ManagementFeesOverAssets

0.314%

+ Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.125%

+ Other expenses

rr_OtherExpensesOverAssets

0.167%

= Total annual Fund operating expenses

rr_ExpensesOverAssets

0.606%

1 Year

rr_ExpenseExampleYear01

62

3 Years

rr_ExpenseExampleYear03

194

5 Years

rr_ExpenseExampleYear05

338

10 Years

rr_ExpenseExampleYear10

757

1 Year

rr_ExpenseExampleNoRedemptionYear01

62

3 Years

rr_ExpenseExampleNoRedemptionYear03

194

5 Years

rr_ExpenseExampleNoRedemptionYear05

338

10 Years

rr_ExpenseExampleNoRedemptionYear10

757

2002

rr_AnnualReturn2002

1.35%

^[1]

2003

rr_AnnualReturn2003

0.65%

^[1]

2004

rr_AnnualReturn2004

0.70%

^[1]

2005

rr_AnnualReturn2005

2.58%

^[1]

2006

rr_AnnualReturn2006

4.46%

^[1]

2007

rr_AnnualReturn2007

4.95%

^[1]

2008

rr_AnnualReturn2008

2.51%

^[1]

2009

rr_AnnualReturn2009

0.27%

^[1]

2010

rr_AnnualReturn2010

0.03%

^[1]

2011

rr_AnnualReturn2011

0.02%

^[1]

Year to Date Return, Label

rr_YearToDateReturnLabel

The total return for the Fund's Class A shares from January 1, 2012 to June 30, 2012

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

0.01%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2007

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

1.25%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

0.004%

One Year

rr_AverageAnnualReturnYear01

0.02%

^[2]

Five Years

rr_AverageAnnualReturnYear05

1.54%

^[2]

Ten Years

rr_AverageAnnualReturnYear10

1.73%

^[2]

Since Inception

rr_AverageAnnualReturnSinceInception

^[2]

7 Day Current Yield %

rr_MoneyMarketSevenDayYield

0.01%

^[2]

Prudential MoneyMart Assets, 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

none

Maximum sales charge (load) imposed on reinvested dividends and other distributions

rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther

none

Redemption fee

rr_RedemptionFeeOverRedemption

none

Exchange fee

rr_ExchangeFee

none

Maximum account fee (accounts under $10,000)

rr_MaximumAccountFee

15

Management fees

rr_ManagementFeesOverAssets

0.314%

+ Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

+ Other expenses

rr_OtherExpensesOverAssets

0.167%

= Total annual Fund operating expenses

rr_ExpensesOverAssets

0.481%

1 Year

rr_ExpenseExampleYear01

49

3 Years

rr_ExpenseExampleYear03

154

5 Years

rr_ExpenseExampleYear05

269

10 Years

rr_ExpenseExampleYear10

659

1 Year

rr_ExpenseExampleNoRedemptionYear01

49

3 Years

rr_ExpenseExampleNoRedemptionYear03

154

5 Years

rr_ExpenseExampleNoRedemptionYear05

269

10 Years

rr_ExpenseExampleNoRedemptionYear10

659

One Year

rr_AverageAnnualReturnYear01

0.02%

^[2]

Five Years

rr_AverageAnnualReturnYear05

1.60%

^[2]

Ten Years

rr_AverageAnnualReturnYear10

^[2]

Since Inception

rr_AverageAnnualReturnSinceInception

2.20%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 14, 2005

^[2]

7 Day Current Yield %

rr_MoneyMarketSevenDayYield

0.01%

^[2]

Prudential MoneyMart Assets, 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

none

Maximum sales charge (load) imposed on reinvested dividends and other distributions

rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther

none

Redemption fee

rr_RedemptionFeeOverRedemption

none

Exchange fee

rr_ExchangeFee

none

Maximum account fee (accounts under $10,000)

rr_MaximumAccountFee

15

Management fees

rr_ManagementFeesOverAssets

0.314%

+ Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

+ Other expenses

rr_OtherExpensesOverAssets

0.167%

= Total annual Fund operating expenses

rr_ExpensesOverAssets

0.481%

1 Year

rr_ExpenseExampleYear01

49

3 Years

rr_ExpenseExampleYear03

154

5 Years

rr_ExpenseExampleYear05

269

10 Years

rr_ExpenseExampleYear10

605

1 Year

rr_ExpenseExampleNoRedemptionYear01

49

3 Years

rr_ExpenseExampleNoRedemptionYear03

154

5 Years

rr_ExpenseExampleNoRedemptionYear05

269

10 Years

rr_ExpenseExampleNoRedemptionYear10

605

One Year

rr_AverageAnnualReturnYear01

0.02%

^[2]

Five Years

rr_AverageAnnualReturnYear05

1.60%

^[2]

Ten Years

rr_AverageAnnualReturnYear10

^[2]

Since Inception

rr_AverageAnnualReturnSinceInception

2.20%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 14, 2005

^[2]

7 Day Current Yield %

rr_MoneyMarketSevenDayYield

0.01%

^[2]

Prudential MoneyMart Assets, Inc. | Class X

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_ExchangeFee

none

Maximum account fee (accounts under $10,000)

rr_MaximumAccountFee

15

Management fees

rr_ManagementFeesOverAssets

0.314%

+ Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

+ Other expenses

rr_OtherExpensesOverAssets

0.167%

= Total annual Fund operating expenses

rr_ExpensesOverAssets

1.481%

1 Year

rr_ExpenseExampleYear01

151

3 Years

rr_ExpenseExampleYear03

468

5 Years

rr_ExpenseExampleYear05

808

10 Years

rr_ExpenseExampleYear10

1,770

1 Year

rr_ExpenseExampleNoRedemptionYear01

151

3 Years

rr_ExpenseExampleNoRedemptionYear03

468

5 Years

rr_ExpenseExampleNoRedemptionYear05

808

10 Years

rr_ExpenseExampleNoRedemptionYear10

1,770

One Year

rr_AverageAnnualReturnYear01

0.02%

^[2]

Five Years

rr_AverageAnnualReturnYear05

^[2]

Ten Years

rr_AverageAnnualReturnYear10

^[2]

Since Inception

rr_AverageAnnualReturnSinceInception

0.15%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 27, 2008

^[2]

7 Day Current Yield %

rr_MoneyMarketSevenDayYield

0.01%

^[2]

Prudential MoneyMart Assets, 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_ExchangeFee

none

Maximum account fee (accounts under $10,000)

rr_MaximumAccountFee

none

Management fees

rr_ManagementFeesOverAssets

0.314%

+ Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

+ Other expenses

rr_OtherExpensesOverAssets

0.167%

= Total annual Fund operating expenses

rr_ExpensesOverAssets

0.481%

1 Year

rr_ExpenseExampleYear01

49

3 Years

rr_ExpenseExampleYear03

154

5 Years

rr_ExpenseExampleYear05

269

10 Years

rr_ExpenseExampleYear10

605

1 Year

rr_ExpenseExampleNoRedemptionYear01

49

3 Years

rr_ExpenseExampleNoRedemptionYear03

154

5 Years

rr_ExpenseExampleNoRedemptionYear05

269

10 Years

rr_ExpenseExampleNoRedemptionYear10

605

One Year

rr_AverageAnnualReturnYear01

0.02%

^[2]

Five Years

rr_AverageAnnualReturnYear05

1.60%

^[2]

Ten Years

rr_AverageAnnualReturnYear10

1.83%

^[2]

Since Inception

rr_AverageAnnualReturnSinceInception

^[2]

7 Day Current Yield %

rr_MoneyMarketSevenDayYield

0.01%

^[2]

Prudential MoneyMart Assets, Inc. | Lipper Money Market Average (A shares)

Risk/Return:

rr_RiskReturnAbstract

One Year

rr_AverageAnnualReturnYear01

0.02%

^[2]

Five Years

rr_AverageAnnualReturnYear05

1.36%

^[2]

Ten Years

rr_AverageAnnualReturnYear10

1.56%

^[2]

Since Inception

rr_AverageAnnualReturnSinceInception

^[2]

Prudential MoneyMart Assets, Inc. | Lipper Money Market Institutional Average (Z shares)

Risk/Return:

rr_RiskReturnAbstract

One Year

rr_AverageAnnualReturnYear01

0.04%

^[2]

Five Years

rr_AverageAnnualReturnYear05

1.57%

^[2]

Ten Years

rr_AverageAnnualReturnYear10

1.88%

^[2]

Since Inception

rr_AverageAnnualReturnSinceInception

^[2]

Prudential MoneyMart Assets, Inc. | iMoneyNet, Inc. Prime Retail Average

Risk/Return:

rr_RiskReturnAbstract

7 Day Current Yield %

rr_MoneyMarketSevenDayYield

0.01%

^[2]

[1] The total return for the Fund's Class A shares from January 1, 2012 to June 30, 2012 was 0.01%.

[2] The Fund's returns and yields are after deduction of expenses.