Label	Element	Value
Risk Return Abstract	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	The Prudential Series Fund
Prospectus Date	rr_ProspectusDate	May 01, 2024
PSF Natural Resources Portfolio
Risk Return Abstract	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	<span style="color:#545454;font-family:Arial;font-size:14pt;">SUMMARY: PSF NATURAL RESOURCES PORTFOLIO</span>
Objective [Heading]	rr_ObjectiveHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;text-transform:uppercase;">INVESTMENT OBJECTIVE</span>
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The investment objective of the Portfolio is long-term growth of capital.
Expense [Heading]	rr_ExpenseHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;text-transform:uppercase;">PORTFOLIO FEES AND EXPENSES</span>
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	The table below shows the fees and expenses that you may pay if you invest in shares of the Portfolio. The table does not include Contract charges. Because Contract charges are not included, the total fees and expenses that you will incur will be higher than the fees and expenses set forth in the table. See your Contract prospectus for more information about Contract charges.
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	<span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your </span><span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">investment)</span>
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	<span style="font-family:Arial;font-size:10pt;font-weight:bold;">Portfolio Turnover. </span>
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Portfolio 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. These costs, which are not reflected in annual portfolio operating expenses or in the example, affect the Portfolio's performance. During the Portfolio's most recent fiscal year ended December 31, the Portfolio's portfolio turnover rate was 94% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	94.00%
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	<span style="font-family:Arial Narrow;font-size:8pt;">Any differences in total annual portfolio operating expenses shown in the table above and the expense ratio (after waivers and/or reimbursements) in the Portfolio’s Financial Highlights are attributable to changes in management fees, fee waivers and/or expense limitations occurring after the end of the most recent fiscal year.</span><span style="font-family:Arial Narrow;font-size:8pt;">Other expenses have been updated from the most recent annual report to reflect current expenses.</span>
Expense Example [Heading]	rr_ExpenseExampleHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Example. </span>
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	The following example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The table does not include Contract charges. Because Contract charges are not included, the total fees and expenses that you will incur will be higher than the fees and expenses set forth in the example. See your Contract prospectus for more information about Contract charges.The example assumes that you invest $10,000 in the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Strategy [Heading]	rr_StrategyHeading	<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]	rr_StrategyNarrativeTextBlock	In pursuing its investment objective, the Portfolio normally invests at least 80% of its assets (net assets plus any borrowings made for investment purposes) in equity securities of companies that are associated with natural resources companies, including those companies that are principally engaged in the research, development, manufacturing, extraction, distribution or sale of materials, energy, or goods related to the agriculture, energy, materials, or commodity-related industrials sectors. The Portfolio may also invest up to 50% of its total assets in foreign and emerging markets securities, including American Depositary Receipts (ADRs) and securities of companies in developing countries, which offer increasing opportunities for natural resource-related growth. Additionally, the Portfolio may invest in debt securities, including up to 10% of its total assets in debt securities rated below investment grade.The Portfolio’s subadviser, T. Rowe Price Associates, Inc. (T. Rowe Price), invests primarily in the common stocks of natural resource companies whose earnings and tangible assets could benefit from accelerating inflation. The Portfolio also may invest in other growth companies that T. Rowe Price believes have strong potential for earnings growth but do not own or develop natural resources. The relative percentages invested in natural resource and non-natural resource companies can vary depending on economic and monetary conditions and the Portfolio’s subadviser’s outlook for inflation. Natural resource companies in which the Portfolio invests typically own, develop, refine, service or transport resources, including energy, metals, forest products, industrials, utilities, chemicals, real estate, and other basic commodities that can be produced and marketed profitably when both labor costs and prices are rising.In pursuing its investment objective, the Portfolio has the discretion to deviate from its normal investment criteria and purchase securities that the subadviser believes will provide an opportunity for substantial appreciation. These situations might arise when the subadviser believes a security could increase in value for a variety of reasons, including an extraordinary corporate event, a new product introduction or innovation, a favorable competitive development, or a change in management. The Portfolio may also invest in other investment companies, including exchange-traded funds, and illiquid investments.
Strategy Portfolio Concentration [Text]	rr_StrategyPortfolioConcentration	<span style="font-family:Arial;font-size:10pt;">In pursuing its investment objective, the Portfolio normally invests at least 80% of its assets (net assets plus any borrowings made for investment purposes) in equity securities of companies that are associated with natural resources companies, including those companies that are principally engaged in the research, development, manufacturing, extraction, distribution or sale of materials, energy, or goods related to the agriculture, energy, materials, or commodity-related industrials sectors. The Portfolio may also invest up to 50% of its total assets in foreign and emerging markets securities, including American Depositary Receipts (ADRs) and securities of </span><span style="font-family:Arial;font-size:10pt;">companies in developing countries, which offer increasing opportunities for natural resource-related growth. Additionally, the Portfolio may invest in debt securities, including up to 10% of its total assets in debt securities rated below investment</span><span style="font-family:Arial;font-size:10pt;line-height:13pt;"> </span><span style="font-family:Arial;font-size:10pt;">grade.</span>
Risk [Heading]	rr_RiskHeading	<span style="font-family:Arial;font-size:10pt;font-weight:bold;">Principal Risks of Investing in the Portfolio.</span>
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	<span style="font-family:Arial;font-size:10pt;font-weight:bold;">Past Performance.</span>
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart and table provide some indication of the risks of investing in the Portfolio by showing changes in the Portfolio's performance from year to year and by showing how the Portfolio's average annual returns for 1, 5, and 10 years compare with those of a broad-based securities market index that reflects the performance of the overall market applicable to the Portfolio and an additional index that represents the market sectors in which the Portfolio primarily invests.Past performance does not mean that the Portfolio will achieve similar results in the future.The annual returns and average annual returns shown in the chart and table are after deduction of expenses and do not include Contract charges. If Contract charges were included, the returns shown would have been lower than those shown. Consult your Contract prospectus for information about Contract charges.Annual return information in the bar chart is provided only for Class I shares. Because all of the Portfolio’s shares are invested in the same portfolio of securities, annual returns for Class II and Class III shares would be lower because Class II and Class III shares do not have the same expenses as Class I shares.Note: The PSF Natural Resources Portfolio changed its subadviser and changed its investment policies and strategy effective June 15, 2022. The performance figures prior to June 15, 2022 for the Portfolio reflect the Portfolio's former investment operations, policies, and strategies prior to this date. Such performance is not representative of the Portfolio's current investment operations, policies, and strategies that took effect as of this date, and the Portfolio's performance after this date could be materially different.Effective May 1, 2024, the Portfolio's broad-based performance index changed to the S&P 500 Index. The S&P 500Index is an appropriate broad-based securities market index that represents the overall market applicable to the Portfolio. The Portfolio will retain the Lipper Global Natural Resources Index as its additional benchmark for performance comparison.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	<span style="font-family:Arial;font-size:10pt;">The bar chart and table provide some indication of the risks of investing in the Portfolio by showing changes in the Portfolio's performance from year to year and by showing how the Portfolio's average annual returns for 1, 5, and 10 years compare with those of a broad-based securities market index that reflects the performance of the overall market applicable to the Portfolio</span><span style="font-family:Arial;font-size:10pt;line-height:13pt;"> </span><span style="font-family:Arial;font-size:10pt;">and an additional index that represents the market sectors in which the Portfolio primarily invests.</span>
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	<span style="font-family:Arial;font-size:10pt;">Past performance does not mean that the Portfolio will achieve similar results in the future.</span>
Bar Chart [Heading]	rr_BarChartHeading	Annual Total Returns (Class I Shares)
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	<span style="color:#000000;font-family:Arial;font-size:10pt;">The annual returns and average annual returns shown in the chart and table are after deduction of expenses and do not include Contract charges. If Contract charges were included, the returns shown would have been lower than those shown.</span>
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best Quarter:Worst Quarter:26.29%4th Quarter 2020-34.18%1st Quarter 2020
Performance Table Heading	rr_PerformanceTableHeading	<span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:3pt;">Average Annual Total Returns (For the periods ended December 31, 2023)</span>
PSF Natural Resources Portfolio | Risk Lose Money [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	The relative significance of the risks summarized below may change over time. All investments have risks to some degree, and it is possible that you could lose money by investing in the Portfolio.
PSF Natural Resources Portfolio | Risk Not Insured Depository Institution [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	An investment in the Portfolio is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
PSF Natural Resources Portfolio | Equity Securities Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Equity Securities Risk. The value of a particular stock or equity-related security held by the Portfolio could fluctuate, perhaps greatly, in response to a number of factors, such as changes in the issuer’s financial condition or the value of the equity markets or a sector of those markets. Such events may result in losses to the Portfolio. In addition, due to decreases in liquidity, the Portfolio may be unable to sell its securities holdings within a reasonable time at the price it values the security or at any price.
PSF Natural Resources Portfolio | Natural Resource Company Investment Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Natural Resources Investment Risk. The Portfolio’s investments will expose the Portfolio to the risk of investment in natural resource companies. The market value of securities of natural resource companies may be affected by numerous factors, including changes in commodity prices, events occurring in nature, inflationary pressures, imposition of import controls, international political and economic developments, environmental incidents, resources conservation, the success of exploration projects, and tax and other government regulations. For example, events occurring in nature (such as earthquakes or fires in prime natural resource areas) and political events (such as coups, military confrontations or acts of terrorism) can affect the overall supply of a natural resource and the value of companies involved in such natural resource. Companies in the natural resources industry are at risk for environmental damage claims. Political risks and the other risks to which non-US securities are subject may affect domestic companies if they have significant operations or investments in non-US countries. In addition, rising interest rates and general economic conditions may affect the demand for natural resources.
PSF Natural Resources Portfolio | Foreign Investment Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Foreign Investment Risk. Foreign markets tend to be more volatile than US markets and are generally not subject to regulatory requirements comparable to those in the US. Foreign securities include investments in securities of foreign issuers denominated in foreign currencies, as well as securities of foreign issuers denominated in US dollars and American Depositary Receipts. Foreign investment risk includes the risk that: changes in currency exchange rates may affect the value of foreign securities held by the Portfolio; foreign markets generally are more volatile than, and generally are not subject to regulatory requirements comparable to, US markets; foreign financial reporting and tax standards usually differ from those in the US; foreign exchanges are often less liquid than US markets; political or social developments may adversely affect the value of foreign securities; foreign holdings may be subject to special taxation and limitations on repatriating investment proceeds; and certain events in foreign markets may adversely affect foreign and domestic issuers, including, among others, military conflict, geopolitical developments, interruptions in the global supply chain, natural disasters, and outbreaks of infectious diseases.
PSF Natural Resources Portfolio | Emerging Markets Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Emerging Markets Risk. The risks of non-US investments are greater for investments in or exposed to emerging markets. Emerging market countries typically have economic, political, and social systems that are less developed, and can be expected to be less stable, than those of more developed countries. As a result, there could be less information available about issuers in emerging market countries, which could negatively affect the ability of the manager or a Portfolio's subadviser(s) to evaluate local companies or their potential impact on a Portfolio's performance. Characteristics of emerging market economies can include heavy economic dependence on international aid, agriculture or exports (particularly commodities), undeveloped or overburdened infrastructures and legal systems, vulnerability to natural disasters, significant and unpredictable government intervention in markets or the economy, volatile currency exchange rates, currency devaluations, runaway inflation, business practices that depart from norms for developed countries, and generally less liquid markets. For example, the economies of such countries can be subject to currency devaluations and rapid and unpredictable (and in some cases, extremely high) rates of inflation or deflation. Low trading volumes may result in a lack of liquidity, price volatility, and valuation difficulties. Regulatory regimes outside of the US may not require or enforce corporate governance standards comparable to that of the US, which may result in less protections for investors in such issuers and make such issuers more susceptible to actions not in the best interest of the issuer or its investors. Emerging market countries may have policies that restrict investments by foreign investors, or that prevent foreign investors from withdrawing their money at will, which may make it difficult for a Portfolio to invest in such countries or increase the administrative costs of such investments. Countries with emerging markets can be found in regions including, but not limited to, Asia, Latin America, the Middle East, Southern Europe, Eastern Europe, Africa and the region comprising the former Soviet Union. A Portfolio may invest in some emerging markets through trading structures or protocols that subject it to risks such as those associated with decreased liquidity, custody of assets, different settlement and clearance procedures, and asserting legal title under a developing legal and regulatory regime to a greater degree than in developed markets or even in other emerging markets.
PSF Natural Resources Portfolio | Small Company Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Small Sized Company Risk. Securities of small sized companies tend to be less liquid than those of larger, more established companies, which can have an adverse effect on the price of these securities and on the Portfolio’s ability to sell these securities. The market price of such investments also may rise more in response to buying demand and fall more in response to selling pressure and be more volatile than investments in larger companies.
PSF Natural Resources Portfolio | Focus Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Focus Risk. The Portfolio focuses or may focus its investments in particular countries, regions, industries, sectors, markets, or types of investments and may accumulate large positions in such areas. As a result, the Portfolio invests in the securities of a small number of issuers and has greater exposure to adverse developments affecting those issuers and a resulting decline in the market price of those issuers’ securities as compared to a portfolio that invests in the securities of a larger number of issuers.
PSF Natural Resources Portfolio | Commodity Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Commodity Risk. The value of a commodity-linked investment is affected by, among other things, overall market movements, factors affecting a particular industry or commodity, and changes in interest and exchange rates and may be more volatile than traditional equity and debt securities. The value of the commodities underlying commodity-linked instruments may be subject to various economic and non-economic factors, such as drought, floods or other weather conditions, livestock disease, embargoes, competition from substitute products, transportation bottlenecks or shortages, fluctuations in supply and demand, tariffs, war and international economic, political, and regulatory developments.
PSF Natural Resources Portfolio | Economic And Market Events Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Economic and Market Events Risk. Economic and market events risk is the risk that one or more markets in which the Portfolio invests will decline in value, including the possibility that the markets will decline sharply and unpredictably. While a Portfolio’s Manager or Subadviser(s) may make efforts to control the risks associated with market changes, and may attempt to identify changes as they occur, market environment changes can be sudden and extreme. Significant shocks to or disruptions of the financial markets or the economy, including those relating to general economic, political, or financial market conditions; significant or unexpected failures, near-failures or credit downgrades of key institutions; investor sentiment and market perceptions; unexpected changes in the prices of key commodities; government actions; geopolitical events or changes; and factors related to a specific issuer, geography, industry or sector, could adversely affect the liquidity and volatility of securities held by the Portfolio. In periods of market volatility and/or declines, the Portfolio may experience high levels of shareholder redemptions, and may have to sell securities at times when it would otherwise not do so, and at unfavorable prices.
PSF Natural Resources Portfolio | Exchange Traded Funds ETF Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Exchange-Traded Funds (ETF) Risk. An investment in an ETF generally presents the same primary risks as an investment in a mutual fund that has the same investment objective, strategies, and policies. In addition, the market price of an ETF’s shares may trade above or below its net asset value and there may not be an active trading market for an ETF’s shares. The Portfolio could lose money investing in an ETF if the prices of the securities owned by the ETF go down.
PSF Natural Resources Portfolio | Expense Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Expense Risk. The actual cost of investing in the Portfolio may be higher than the expenses shown in the “Annual Portfolio Operating Expenses” table above for a variety of reasons, including, for example, if the Portfolio’s average net assets decrease.
PSF Natural Resources Portfolio | Fixed Income Securities Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Fixed Income Securities Risk. Investment in fixed income securities involves a variety of risks, including that: an issuer or guarantor of a security will be unable or unwilling to pay obligations when due; due to decreases in liquidity, the Portfolio may be unable to sell its securities holdings within a reasonable time at the price it values the security or at any price; and the Portfolio’s investment may decrease in value when interest rates rise. Volatility in interest rates and in fixed income markets may increase the risk that the Portfolio’s investment in fixed income securities will go down in value. In recent years, the Federal Open Market Committee (FOMC) began implementing increases to the federal funds interest rate and there may be further rate increases. To the extent rates increase substantially and/or rapidly, a Portfolio with significant investment in fixed income investments may be subject to significant losses. Changes in interest rates may also affect the liquidity of the Portfolio’s investments in fixed income securities.
PSF Natural Resources Portfolio | High Yield Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	High Yield Risk. Investments in fixed income instruments rated below investment grade and unrated instruments of similar credit quality (i.e., “high yield securities” or “junk bonds”) may be more sensitive to interest rate, credit, call, and liquidity risks than investments in investment grade securities, and have predominantly speculative characteristics. An economic downturn generally leads to a higher non-payment rate, and a high yield investment may lose significant value before a default occurs.
PSF Natural Resources Portfolio | Illiquid Investments Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Illiquid Investments Risk. Illiquid investments risk exists when particular investments made by the Portfolio are difficult to purchase or sell. The Portfolio may make investments that may become less liquid in response to market developments, lack of a trading market, or adverse investor perceptions. If the Portfolio is forced to sell these investments to pay redemption proceeds or for other reasons, the Portfolio may lose money. In addition, when there is no willing buyer and investments cannot be readily sold at the desired time or price, the Portfolio may have to accept a lower price or may not be able to sell the instrument at all. It also may be the case that other market participants may be attempting to liquidate illiquid holdings at the same time as the Portfolio, causing increased supply in the market and contributing to liquidity risk and downward pricing pressure. An inability to sell a portfolio position can adversely affect the Portfolio’s value or prevent the Portfolio from being able to take advantage of other investment opportunities.
PSF Natural Resources Portfolio | Investment Company Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Investment Company Risk. The risks of owning another investment company are generally similar to the risks of investing directly in the securities in which that investment company invests. However, an investment company may not achieve its investment objective or execute its investment strategy effectively, which may adversely affect the Portfolio’s performance. In addition, because closed-end funds and exchange-traded funds trade on a secondary market, their shares may trade at a premium or discount to the actual net asset value of their portfolio securities and their shares may have greater volatility because of the potential lack of liquidity.
PSF Natural Resources Portfolio | Liquidity And Valuation Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Liquidity and Valuation Risk. The Portfolio may hold one or more securities for which there are no or few buyers and sellers or the securities are subject to limitations on transfer. The Portfolio may be unable to sell those portfolio holdings at the desired time or price, and may have difficulty determining the value of such securities for the purpose of determining the Portfolio’s net asset value. In such cases, investments owned by the Portfolio may be valued at fair value pursuant to policies and procedures adopted and implemented by the Manager. No assurance can be given that the fair value prices accurately reflect the value of the security. The Portfolio is subject to a liquidity risk management program, which limits the ability of the Portfolio to invest in illiquid investments.
PSF Natural Resources Portfolio | Market And Management Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Market and Management Risk. Markets in which the Portfolio invests may experience volatility and go down in value, and possibly sharply and unpredictably in short periods of time. Investment techniques, risk analyses, and investment strategies, which may include quantitative models or methods, used by a subadviser in making investment decisions for the Portfolio are subject to human error and may not produce the intended or desired results. The value of the Portfolio’s investments may be negatively affected by the occurrence of domestic or global events, including war, terrorism, environmental disasters, natural disasters, sanctions, cybersecurity events, supply chain disruptions,political or civil instability, and public health emergencies, among others. Such events may reduce consumer demand or economic output, result in market closures, travel restrictions or quarantines, and significantly adversely impact the economy. There is no guarantee that the investment objective of the Portfolio will be achieved.
PSF Natural Resources Portfolio | Portfolio Turnover Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Portfolio Turnover Risk. A subadviser may engage in active trading on behalf of the Portfolio—that is, frequent trading of the Portfolio’s securities—in order to take advantage of new investment opportunities or yield differentials. The Portfolio's turnover rate may be higher than that of other mutual funds. Portfolio turnover generally involves some expense to the Portfolio, including brokerage commissions or dealer mark-ups and other transaction costs on the sale of securities and reinvestment in other securities.
PSF Natural Resources Portfolio | Regulatory Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Regulatory Risk. The Portfolio is subject to a variety of laws and regulations which govern its operations. The Portfolio is subject to regulation by the Securities and Exchange Commission (the SEC), and depending on the Portfolio, the Commodity Futures Trading Commission (the CFTC). Similarly, the businesses and other issuers of the securities and other instruments in which the Portfolio invests are also subject to considerable regulation. Changes in laws and regulations may materially impact the Portfolio, a security, business, sector, or market.
PSF Natural Resources Portfolio | Class I
Risk Return Abstract	rr_RiskReturnAbstract
Management Fees	rr_ManagementFeesOverAssets	0.45%	[1]
+ Distribution and/or Service Fees (12b-1 Fees)	rr_DistributionAndService12b1FeesOverAssets	none	[1]
+ Administration Fees	rr_Component1OtherExpensesOverAssets	none	[1]
+ Other Expenses	rr_OtherExpensesOverAssets	0.06%	[1]
= Total Annual Portfolio Operating Expenses	rr_ExpensesOverAssets	0.51%	[1]
1 Year	rr_ExpenseExampleYear01	$ 52
3 Years	rr_ExpenseExampleYear03	164
5 Years	rr_ExpenseExampleYear05	285
10 Years	rr_ExpenseExampleYear10	640
1 Year	rr_ExpenseExampleNoRedemptionYear01	52
3 Years	rr_ExpenseExampleNoRedemptionYear03	164
5 Years	rr_ExpenseExampleNoRedemptionYear05	285
10 Years	rr_ExpenseExampleNoRedemptionYear10	$ 640
2014	rr_AnnualReturn2014	(19.47%)
2015	rr_AnnualReturn2015	(28.57%)
2016	rr_AnnualReturn2016	25.36%
2017	rr_AnnualReturn2017	(0.19%)
2018	rr_AnnualReturn2018	(18.07%)
2019	rr_AnnualReturn2019	10.69%
2020	rr_AnnualReturn2020	12.28%
2021	rr_AnnualReturn2021	25.50%
2022	rr_AnnualReturn2022	22.04%
2023	rr_AnnualReturn2023	1.98%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;margin-left:0.00pt;">Best Quarter:</span>
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Dec. 31, 2020
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	26.29%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;margin-left:0.00pt;">Worst Quarter:</span>
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Mar. 31, 2020
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(34.18%)
One Year	rr_AverageAnnualReturnYear01	1.98%
Five Years	rr_AverageAnnualReturnYear05	14.19%
Ten Years	rr_AverageAnnualReturnYear10	1.36%
PSF Natural Resources Portfolio | Class II
Risk Return Abstract	rr_RiskReturnAbstract
Management Fees	rr_ManagementFeesOverAssets	0.45%	[1]
+ Distribution and/or Service Fees (12b-1 Fees)	rr_DistributionAndService12b1FeesOverAssets	0.25%	[1]
+ Administration Fees	rr_Component1OtherExpensesOverAssets	0.15%	[1]
+ Other Expenses	rr_OtherExpensesOverAssets	0.06%	[1]
= Total Annual Portfolio Operating Expenses	rr_ExpensesOverAssets	0.91%	[1]
1 Year	rr_ExpenseExampleYear01	$ 93
3 Years	rr_ExpenseExampleYear03	290
5 Years	rr_ExpenseExampleYear05	504
10 Years	rr_ExpenseExampleYear10	1,120
1 Year	rr_ExpenseExampleNoRedemptionYear01	93
3 Years	rr_ExpenseExampleNoRedemptionYear03	290
5 Years	rr_ExpenseExampleNoRedemptionYear05	504
10 Years	rr_ExpenseExampleNoRedemptionYear10	$ 1,120
One Year	rr_AverageAnnualReturnYear01	1.58%
Five Years	rr_AverageAnnualReturnYear05	13.73%
Ten Years	rr_AverageAnnualReturnYear10	0.96%
PSF Natural Resources Portfolio | Class III
Risk Return Abstract	rr_RiskReturnAbstract
Management Fees	rr_ManagementFeesOverAssets	0.45%	[1]
+ Distribution and/or Service Fees (12b-1 Fees)	rr_DistributionAndService12b1FeesOverAssets	0.25%	[1]
+ Administration Fees	rr_Component1OtherExpensesOverAssets	none	[1]
+ Other Expenses	rr_OtherExpensesOverAssets	0.06%	[1],[2]
= Total Annual Portfolio Operating Expenses	rr_ExpensesOverAssets	0.76%	[1]
1 Year	rr_ExpenseExampleYear01	$ 78
3 Years	rr_ExpenseExampleYear03	243
5 Years	rr_ExpenseExampleYear05	422
10 Years	rr_ExpenseExampleYear10	942
1 Year	rr_ExpenseExampleNoRedemptionYear01	78
3 Years	rr_ExpenseExampleNoRedemptionYear03	243
5 Years	rr_ExpenseExampleNoRedemptionYear05	422
10 Years	rr_ExpenseExampleNoRedemptionYear10	$ 942
One Year	rr_AverageAnnualReturnYear01	1.75%
Five Years	rr_AverageAnnualReturnYear05
Ten Years	rr_AverageAnnualReturnYear10
SinceInception	rr_AverageAnnualReturnSinceInception	12.40%
InceptionDate	rr_AverageAnnualReturnInceptionDate	Apr. 26, 2021
PSF Natural Resources Portfolio | MSCI World Index (GD) (former)(reflects no deduction for fees, expenses or taxes)
Risk Return Abstract	rr_RiskReturnAbstract
One Year	rr_AverageAnnualReturnYear01	24.42%
Five Years	rr_AverageAnnualReturnYear05	13.37%
Ten Years	rr_AverageAnnualReturnYear10	9.18%
SinceInception	rr_AverageAnnualReturnSinceInception	4.99%	[3]
InceptionDate	rr_AverageAnnualReturnInceptionDate
PSF Natural Resources Portfolio | Broad-Based Securities Market Index: S&P 500 Index (reflects no deduction for fees, expenses or taxes)
Risk Return Abstract	rr_RiskReturnAbstract
One Year	rr_AverageAnnualReturnYear01	26.29%
Five Years	rr_AverageAnnualReturnYear05	15.69%
Ten Years	rr_AverageAnnualReturnYear10	12.03%
SinceInception	rr_AverageAnnualReturnSinceInception	6.74%	[3]
InceptionDate	rr_AverageAnnualReturnInceptionDate
PSF Natural Resources Portfolio | Lipper Global Natural Resources Funds Index (reflects no deduction for fees, expenses or taxes)
Risk Return Abstract	rr_RiskReturnAbstract
One Year	rr_AverageAnnualReturnYear01	1.19%
Five Years	rr_AverageAnnualReturnYear05	12.48%
Ten Years	rr_AverageAnnualReturnYear10	2.69%
SinceInception	rr_AverageAnnualReturnSinceInception	12.87%	[3]
InceptionDate	rr_AverageAnnualReturnInceptionDate

[1] Any differences in total annual portfolio operating expenses shown in the table above and the expense ratio (after waivers and/or reimbursements) in the Portfolio’s Financial Highlights are attributable to changes in management fees, fee waivers and/or expense limitations occurring after the end of the most recent fiscal year.

[2] Other expenses have been updated from the most recent annual report to reflect current expenses.

[3] Since Inception returns for the Indexes are measured from the month-end closest to the inception date.