PSF PGIM Government Money Market Portfolio Investment Strategy - PSF PGIM Government Money Market Portfolio	Dec. 31, 2025
Prospectus [Line Items]
Strategy [Heading]	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;text-transform:uppercase;">INVESTMENTS, RISKS AND PERFORMANCE</span><span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Principal Investment Strategies. </span>
Strategy Narrative [Text Block]	The Portfolio 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 US Treasury bills, notes, and other obligations issued or guaranteed as to principal and interest by the US Government or its agencies or instrumentalities. The Portfolio has a policy that requires it to invest under normal conditions, at least 80% of its net assets in government securities and/or repurchase agreements that are collateralized by government securities. In managing the Portfolio’s assets, the Portfolio’s subadviser, PGIM Fixed Income, 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. The Portfolio invests 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 Portfolio seeks to invest in securities that present minimal credit risk. The Portfolio may invest significantly in securities with floating or variable rates of interest. The Portfolio seeks to maintain a stable net asset value of $10.00 per share. In other words, the Portfolio attempts to operate so that shareholders do not lose any of the principal amount they invest in the Portfolio. Of course, there can be no assurance that the Portfolio will achieve its goal of a stable net asset value, and shares of the Portfolio are neither insured nor guaranteed by the US government or any other entity. For instance, the issuer or guarantor of a portfolio security or the other party to a contract could default on its obligation, and this could cause the Portfolio's net asset value per share to fall below $10.00. In addition, the income earned by the Portfolio will fluctuate based on market conditions, interest rates and other factors. In a low interest rate environment, the yield of the Portfolio, after the deduction of operating expenses, may be negative even though the yield before deducting such expenses is positive. A negative yield may also cause the Portfolio's net asset value per share to fall below $10.00. PGIM Investments LLC may decide to reimburse certain of these expenses to the Portfolio in order to maintain a positive yield, however it is under no obligation to do so and may cease doing so at any time without prior notice. The Trust’s Board of Trustees (the Board) has determined that the Portfolio, as a “government money market fund”, is not subject to liquidity fees. The Board has reserved the power to change this determination with respect to liquidity fees, but such change would become effective only after providing appropriate prior notice to shareholders.

PSF PGIM Government Money Market Portfolio Investment Strategy - PSF PGIM Government Money Market Portfolio

Dec. 31, 2025

<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;text-transform:uppercase;">INVESTMENTS, RISKS AND PERFORMANCE</span><span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Principal Investment Strategies. </span>

Strategy Narrative [Text Block]

The Portfolio 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 US Treasury bills, notes, and other obligations issued or guaranteed as to principal and interest by the US Government or its agencies or instrumentalities. The Portfolio has a policy that requires it to invest under normal conditions, at least 80% of its net assets in government securities and/or repurchase agreements that are collateralized by government securities. In managing the Portfolio’s assets, the Portfolio’s subadviser, PGIM Fixed Income, 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. The Portfolio invests 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 Portfolio seeks to invest in securities that present minimal credit risk. The Portfolio may invest significantly in securities with floating or variable rates of interest. The Portfolio seeks to maintain a stable net asset value of $10.00 per share. In other words, the Portfolio attempts to operate so that shareholders do not lose any of the principal amount they invest in the Portfolio. Of course, there can be no assurance that the Portfolio will achieve its goal of a stable net asset value, and shares of the Portfolio are neither insured nor guaranteed by the US government or any other entity. For instance, the issuer or guarantor of a portfolio security or the other party to a contract could default on its obligation, and this could cause the Portfolio's net asset value per share to fall below $10.00. In addition, the income earned by the Portfolio will fluctuate based on market conditions, interest rates and other factors. In a low interest rate environment, the yield of the Portfolio, after the deduction of operating expenses, may be negative even though the yield before deducting such expenses is positive. A negative yield may also cause the Portfolio's net asset value per share to fall below $10.00. PGIM Investments LLC may decide to reimburse certain of these expenses to the Portfolio in order to maintain a positive yield, however it is under no obligation to do so and may cease doing so at any time without prior notice. The Trust’s Board of Trustees (the Board) has determined that the Portfolio, as a “government money market fund”, is not subject to liquidity fees. The Board has reserved the power to change this determination with respect to liquidity fees, but such change would become effective only after providing appropriate prior notice to shareholders.