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Class A & Y Prospectus | PACE International Emerging Markets Equity Investments  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading PACE International Emerging Markets Equity Investments
Objective [Heading] rr_ObjectiveHeading Investment objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Capital appreciation.
Expense [Heading] rr_ExpenseHeading Fees and expenses of the fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the fund. You may qualify for sales charge discounts on purchases of Class A shares if you or your family invest, or agree to invest in the future, at least $50,000 in the UBS family of funds. More information about these and other discounts and waivers, as well as eligibility requirements for each share class, is available from your financial advisor and in "Managing your fund account" on page 136 of the prospectus and in "Reduced sales charges, additional purchase, exchange and redemption information and other services" on page 250 of the fund's Statement of Additional Information. Different intermediaries and financial professionals may make available different sales charge waivers or discounts. These variations are described in Appendix A beginning on page A-1 of this prospectus (Intermediary-Specific Sales Charge Waivers and Discounts).
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)
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination Nov. 30, 2023
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio turnover
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock

The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 57% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 57.00%
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent "Management fees" have been restated to reflect the reduced management fee rates that became effective and applicable to the fund on August 1, 2022.
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods unless otherwise stated. The example also assumes that your investment has a 5% return each year and that the fund'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 Principal strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock


Principal investments

Under normal circumstances, the fund invests at least 80% of its net assets (plus the amount of any borrowing for investment purposes) in equity securities that are tied economically to emerging market countries, which may include equity securities issued by companies domiciled in emerging market countries. Such investments may be represented by investments in securities of other investment companies that invest primarily in equity securities that are tied economically to emerging market countries. The fund generally defines emerging market countries as countries that are not included in the MSCI World Index of major world economies. However, countries included in this index may be considered emerging markets based on current political and economic factors. The fund may not always diversify its investments on a geographic basis among emerging market countries.

The fund may invest, to a limited extent, in (1) bonds, including up to 10% of its total assets in bonds that are below investment grade, which are commonly known as "junk bonds," and (2) securities of other investment companies, including exchange-traded funds ("ETFs"), that invest in emerging markets. The fund invests in securities of companies with varying market capitalizations.

Management process

The fund employs a "manager of managers" structure. UBS Asset Management (Americas) Inc. ("UBS AM"), the fund's manager and primary provider of investment advisory services, has the ultimate authority, subject to oversight by the fund's board, to oversee the fund's subadvisor(s) and recommend their hiring, termination and replacement, and to allocate assets among the fund's subadvisor(s). The relative value of each subadvisor's share of the fund's assets may change over time.

UBS AM's investment process begins with subadvisor selection. UBS AM's portfolio management team constructs a list of potential subadvisors based on information primarily from internal sources and the team's collective knowledge of the industry, but also supplemented by external sources. The team then focuses its research on that list to identify a small number of the

most attractive candidates. This research includes analyzing the portfolio holdings and/or positioning of a subadvisor's investment strategy to understand whether the allocation of risk and the drivers of alpha are consistent with the subadvisor's investment philosophy and stated strengths. The most attractive sub-set of those subadvisors is then selected for in-depth, on-site due diligence meetings with representatives from the investment, operations and compliance groups within UBS AM. The due diligence information is then synthesized to select the most attractive candidate(s) for the fund, subject to the board's approval.

In managing the fund and overseeing the fund's subadvisor(s), UBS AM views its research process as an ongoing one, as the team continually seeks to confirm a subadvisor's investment thesis over the appropriate investment horizon. In general, UBS AM leverages its research and market knowledge to construct funds with exposure to various subadvisors that are expected, in combination, to produce the desired overall fund characteristics. UBS AM's ongoing monitoring and risk management process incorporates daily, weekly, monthly, quarterly and annual responsibilities designed to monitor the drivers of fund risk and performance at the subadvisor level and at the overall fund level. Through this process, UBS AM may adjust a fund's positioning by altering its allocation weights across subadvisors within the fund and/or by changing the specific subadvisors within the fund.

The main strategies of the subadvisors include:

•  A strategy using fundamental research to identify companies that are attractive based on a value-oriented dividend discount model and market analysis.

•  A strategy that invests in mid and large cap companies with a quality growth orientation.

•  A strategy that combines top-down analyses of economic, political and social factors with bottom-up quantitative and qualitative fundamental research to seek to identify countries, sectors and companies with robust growth characteristics.

•  A disciplined, deep value strategy based on fundamental research.
Risk [Heading] rr_RiskHeading Principal risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

All investments carry a certain amount of risk, and the fund cannot guarantee that it will achieve its investment objective. You may lose money by investing in the fund. An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The principal risks presented by an investment in the fund are:

Equity risk: Stocks and other equity securities, and securities convertible into stocks, generally fluctuate in

value more than bonds. The fund could lose all of its investment in a company's stock.

Foreign investing risk: The value of the fund's investments in foreign securities may fall due to adverse political, social and economic developments abroad and due to decreases in foreign currency values relative to the US dollar. Investments in foreign government bonds involve special risks because the fund may have limited legal recourse in the event of default. Also, foreign securities are sometimes less liquid and more difficult to sell and to value than securities of US issuers. These risks are greater for investments in emerging market issuers.

Emerging market risk: There are additional risks inherent in investing in less developed countries that are applicable to the fund. Compared to the United States and other developed countries, investments in emerging market issuers may decline in value because of unfavorable foreign government actions, greater risks of political instability or the absence of accurate information about emerging market issuers. Further, emerging countries may have economies based on only a few industries and securities markets that trade only a small number of securities and employ settlement procedures different from those used in the United States. Prices on these exchanges tend to be volatile and, in the past, securities in these countries have offered greater potential for gain (as well as loss) than securities of companies located in developed countries. Issuers may not be subject to uniform accounting, auditing and financial reporting standards and there may be less publicly available financial and other information about such issuers, comparable to US issuers. Further, investments by foreign investors are subject to a variety of restrictions in many emerging countries. Countries such as those in which the fund may invest may experience, high rates of inflation, high interest rates, exchange rate fluctuations or currency depreciation, large amounts of external debt, balance of payments and trade difficulties and extreme poverty and unemployment.

Foreign currency risk: The value of non-US dollar denominated securities held by the fund may be affected by changes in exchange rates or control regulations. If a local currency declines against the US dollar, the value of the holding decreases in US dollar terms. In addition, the fund may be exposed to losses if its other foreign currency positions (e.g., options, forward commitments) move against it.

Foreign custody risk: The fund may hold foreign securities and cash with foreign banks, agents and securities depositories. Such foreign banks or securities depositories may be subject to limited regulatory oversight. The laws of certain countries also may limit the fund's ability

to recover its assets if a foreign bank or depository enters into bankruptcy.

Geographic concentration risk: To the extent the fund invests a significant portion of its assets in one geographic area, it will be more susceptible to factors adversely affecting that area.

China risk: There are special risks associated with investments in China (including Chinese companies listed on US and Hong Kong exchanges), Hong Kong and Taiwan, including exposure to currency fluctuations, less liquidity, expropriation, confiscatory taxation, nationalization and exchange control regulations (including currency blockage). Inflation and rapid fluctuations in inflation and interest rates have had, and may continue to have, negative effects on the economy and securities markets of China, Hong Kong and Taiwan. In addition, investments in Taiwan and Hong Kong could be adversely affected by their respective political and economic relationship with China. China, Hong Kong and Taiwan are deemed by the investment manager to be emerging markets countries, which means an investment in these countries has more heightened risks than general foreign investing due to a lack of established legal, political, business and social frameworks and accounting standards or auditor oversight in these countries to support securities markets as well as the possibility for more widespread corruption and fraud. In addition, the standards for environmental, social and corporate governance matters in China, Hong Kong and Taiwan tend to be lower than such standards in more developed economies.

Certain securities issued by companies located or operating in China, such as China A-shares, are subject to trading restrictions, quota limitations and less market liquidity. For investments using a variable interest entity ("VIE") structure, all or most of the value of such an investment depends on the enforceability of the contracts between the listed company and the China-based entity (and/or related persons). Investments through a VIE structure are subject to the risk that a counterparty will breach its contracts with the listed company that holds such contractual rights; that any breach of such contracts will likely be subject to Chinese law and jurisdiction; and that Chinese law may be interpreted or change in a way that affects the enforceability of such arrangements, or contracts between the China-based entity (and/or related persons) and the listed company may otherwise not be enforceable under Chinese law. As a result, the market value of the fund's associated holdings would likely be significantly negatively impacted, which may result in significant losses with little or no recourse available. Further, investments in the listed company may be affected by conflicts of interest and duties between the legal owners of the China-based

entity and the stockholders of the listed company, which may adversely impact the value of the investments of the listed company. Additionally, the Chinese economy is highly dependent on the property sector and exportation of products and services, and could experience a significant slowdown or otherwise be adversely impacted due to a slowdown in the housing construction and development markets, a reduction in global demand for Chinese exports, contraction in spending on domestic goods by Chinese consumers, the institution of tariffs or other trade barriers, trade or political disputes with China's major trading partners, natural disasters, or public health threats.

Additionally, emerging market countries, such as China, may subject the fund's investments to a number of tax rules, and the application of many of those rules may be uncertain. Changes in applicable Chinese tax law could reduce the after-tax profits of the fund, directly or indirectly, including by reducing the after-tax profits of companies in China in which the fund invests. Uncertainties in Chinese tax rules could result in unexpected tax liabilities for the fund.

Limited capitalization risk: The risk that securities of smaller capitalization companies tend to be more volatile and less liquid than securities of larger capitalization companies. This can have a disproportionate effect on the market price of smaller capitalization companies and affect the fund's ability to purchase or sell these securities. In general, smaller capitalization companies are more vulnerable than larger companies to adverse business or economic developments and they may have more limited resources.

High yield securities ("junk bonds") risk: Lower-rated securities (the issuers of which are typically in poorer financial health) are subject to higher risks than investment grade securities. For example, lower-rated securities may be (1) subject to a greater risk of loss of principal and non-payment of interest (including default by the issuer); (2) subject to greater price volatility; and (3) less liquid than investment grade securities. The prices of such securities may be more vulnerable to bad economic news, or even the expectation of bad news, than higher rated fixed income securities.

Market risk: The risk that the market value of the fund's investments may fluctuate, sometimes rapidly or unpredictably, as the stock and bond markets fluctuate. Market risk may affect a single issuer, industry, or sector of the economy, or it may affect the market as a whole. Moreover, changing market, economic, political and social conditions in one country or geographic region could adversely impact market, economic, political and social conditions in other countries or regions.

Investment company risk: Investments in open- or closed-end investment companies, including ETFs, involve certain risks. The shares of other investment companies are subject to the management fees and other expenses of those companies, and the purchase of shares of some investment companies requires the payment of sales loads and (in the case of closed-end investment companies) sometimes substantial premiums above the value of such companies' portfolio securities.

Model and data risk: A subadvisor for the fund may employ a complex strategy using proprietary quantitative models in selecting investments for the fund. Investments selected using these models may perform differently than expected as a result of the factors used in the models, the weight placed on each factor, changes from the factors' historical trends, and technical issues in the construction and implementation of the models (including, for example, data problems, problems with data supplied by third parties, software issues, or other types of errors). There is no guarantee that a subadvisor's quantitative models will perform as expected or result in effective investment decisions for the fund.

Credit risk: The risk that the fund could lose money if the issuer or guarantor of a fixed income security, or the counterparty to or guarantor of a derivative contract or transaction, is unable or unwilling to meet its financial obligations. This risk is likely greater for lower quality investments than for investments that are higher quality.

Interest rate risk: An increase in prevailing interest rates typically causes the value of fixed income securities to fall. Changes in interest rates will likely affect the value of longer-duration fixed income securities more than shorter-duration securities and higher quality securities more than lower quality securities. When interest rates are falling, some fixed income securities provide that the issuer may repay them earlier than the maturity date, and if this occurs the fund may have to reinvest these repayments at lower interest rates. The fund may face a heightened level of interest rate risk due to certain changes in general economic conditions, inflation and monetary policy, such as certain types of interest rate changes by the Federal Reserve.

Management risk: The risk that the investment strategies, techniques and risk analyses employed by UBS AM and/or a subadvisor may not produce the desired results.

Multi-manager risk: The investment styles and strategies of the fund's subadvisors may not complement each other as expected by the fund's manager. The same security may be held by different subadvisors, or may be acquired by one subadvisor while another subadvisor of the fund decides to sell the same security.

Subadvisors may have different views on the market causing them to make different investment decisions. For example, a subadvisor may determine that it is appropriate to take a temporary defensive position in short-term cash instruments at a time when another subadvisor deems it appropriate to maintain or increase market exposure. Because each subadvisor independently places trades for the fund, the fund may incur higher brokerage costs than would be the case if the fund only had one subadvisor. In addition, UBS AM may be subject to potential conflicts of interests in allocating fund assets because it pays different fees to the subadvisors which could impact its revenues.
Risk Lose Money [Text] rr_RiskLoseMoney You may lose money by investing in the fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

Risk/return bar chart and table

The performance information that follows shows the fund's performance information in a bar chart and an average annual total returns table. The bar chart does not reflect the sales charges of the fund's Class A shares; if it did, the total returns shown would be lower. The information provides some indication of the risks of investing in the fund by showing changes in the fund's performance from year to year and by showing how the fund's average annual total returns compare with those of a broad measure of market performance. The fund's past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future. This may be particularly true given that other subadvisors were responsible for managing portions of the fund's assets during previous periods. Mondrian Investment Partners Limited ("Mondrian") assumed day-to-day management of a portion of the fund's assets on September 28, 2004. William Blair Investment Management, LLC ("William Blair") assumed day-to-day management of a separate portion of the fund's assets on March 23, 2011. RWC Asset Advisors (US) LLC ("Redwheel") assumed day-to-day management of a separate portion of the fund's assets on September 11, 2019. ARGA Investment Management, LP ("ARGA") assumed day-to-day management of a separate portion of the fund's assets on December 11, 2020. Updated performance for the fund is available at www.ubs.com/us-mutualfundperformance.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. In addition, the after-tax returns shown are not relevant to investors who hold fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns for other classes will vary from the Class A shares' after-tax returns shown.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The information provides some indication of the risks of investing in the fund by showing changes in the fund's performance from year to year and by showing how the fund's average annual total returns compare with those of a broad measure of market performance.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.ubs.com/us-mutualfundperformance
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund's past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading PACE International Emerging Markets Equity Investments Annual Total Returns of Class A Shares
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads The bar chart does not reflect the sales charges of the fund's Class A shares; if it did, the total returns shown would be lower.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Total return January 1 - September 30, 2022: (26.44)%
Best quarter during calendar years shown—2Q 2020: 21.45%
Worst quarter during calendar years shown—1Q 2020: (26.12)%
Year to Date Return, Label rr_YearToDateReturnLabel Total return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2022
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn (26.44%)
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best quarter during calendar years shown
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2020
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 21.45%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst quarter during calendar years shown
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (26.12%)
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (Index reflects no deduction for feesand expenses)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Actual after-tax returns depend on an investor's tax situation and may differ from those shown. In addition, the after-tax returns shown are not relevant to investors who hold fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns for other classes will vary from the Class A shares' after-tax returns shown.
Average Annual Return, Caption rr_AverageAnnualReturnCaption Average annual total returns (figures reflect sales charges)(for the periods ended December 31, 2021)
Class A & Y Prospectus | PACE International Emerging Markets Equity Investments | MSCI Emerging Markets Index (net) (Index reflects no deduction for fees and expenses)  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 (2.54%)
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 9.87%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 5.49%
Class A & Y Prospectus | PACE International Emerging Markets Equity Investments | CLASS A  
Risk/Return: rr_RiskReturnAbstract  
Maximum front-end sales charge (load) imposed on purchases (as a % of the offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.50%
Maximum deferred sales charge (load) (as a % of the lesser of the offering price or the redemption price) rr_MaximumDeferredSalesChargeOverOfferingPrice none [1]
Exchange fee rr_ExchangeFee none
Management fees rr_ManagementFeesOverAssets 0.90% [2]
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses (includes administration fee of 0.10%) rr_OtherExpensesOverAssets 0.50% [3]
Total annual fund operating expenses rr_ExpensesOverAssets 1.65%
Management fee waiver/expense reimbursements rr_FeeWaiverOrReimbursementOverAssets 0.20% [4]
Total annual fund operating expenses after fee waiver and/or expense reimbursements rr_NetExpensesOverAssets 1.45% [4]
Expenses Deferred Charges [Text Block] rr_ExpensesDeferredChargesTextBlock Purchases of $1 million or more that were not subject to a front-end sales charge are subject to a 1% contingent deferred sales charge ("CDSC") if sold within one year of the purchase date.
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales charge discounts on purchases of Class A shares if you or your family invest, or agree to invest in the future, at least $50,000 in the UBS family of funds.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 689 [5]
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,023 [5]
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,380 [5]
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,381 [5]
Annual Return 2012 rr_AnnualReturn2012 19.88%
Annual Return 2013 rr_AnnualReturn2013 (4.98%)
Annual Return 2014 rr_AnnualReturn2014 0.07%
Annual Return 2015 rr_AnnualReturn2015 (17.08%)
Annual Return 2016 rr_AnnualReturn2016 5.78%
Annual Return 2017 rr_AnnualReturn2017 33.78%
Annual Return 2018 rr_AnnualReturn2018 (16.63%)
Annual Return 2019 rr_AnnualReturn2019 18.72%
Annual Return 2020 rr_AnnualReturn2020 19.79%
Annual Return 2021 rr_AnnualReturn2021 (1.95%)
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 (7.36%)
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 8.00%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 3.93%
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Dec. 11, 2000
Class A & Y Prospectus | PACE International Emerging Markets Equity Investments | CLASS A | After Taxes on Distributions  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 (9.61%)
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 7.43%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 3.73%
Class A & Y Prospectus | PACE International Emerging Markets Equity Investments | CLASS A | After Taxes on Distributions and Sale of Fund Shares  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 (2.72%)
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 6.45%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 3.30%
Class A & Y Prospectus | PACE International Emerging Markets Equity Investments | CLASS Y  
Risk/Return: rr_RiskReturnAbstract  
Maximum front-end sales charge (load) imposed on purchases (as a % of the offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a % of the lesser of the offering price or the redemption price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Exchange fee rr_ExchangeFee none
Management fees rr_ManagementFeesOverAssets 0.90% [2]
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses (includes administration fee of 0.10%) rr_OtherExpensesOverAssets 0.54% [3]
Total annual fund operating expenses rr_ExpensesOverAssets 1.44%
Management fee waiver/expense reimbursements rr_FeeWaiverOrReimbursementOverAssets 0.24% [4]
Total annual fund operating expenses after fee waiver and/or expense reimbursements rr_NetExpensesOverAssets 1.20% [4]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 122 [5]
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 432 [5]
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 764 [5]
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,704 [5]
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 (1.78%)
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 9.49%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 4.78%
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Feb. 09, 2001
[1] Purchases of $1 million or more that were not subject to a front-end sales charge are subject to a 1% contingent deferred sales charge ("CDSC") if sold within one year of the purchase date.
[2] "Management fees" have been restated to reflect the reduced management fee rates that became effective and applicable to the fund on August 1, 2022.
[3] "Other expenses" include "Acquired fund fees and expenses," which were less than 0.01% of the average net assets of the fund.
[4] The fund and UBS Asset Management (Americas) Inc. ("UBS AM") have entered into a written fee waiver/expense reimbursement agreement pursuant to which UBS AM is contractually obligated to waive its management fees and/or reimburse expenses so that the fund's ordinary total operating expenses of each class through November 30, 2023 (excluding, as applicable, (i) dividend expense, borrowing costs, and interest expense relating to short sales, and (ii) expenses attributable to investment in other investment companies, interest, taxes, brokerage commissions, expenses related to shareholders' meetings, and extraordinary expenses) would not exceed 1.45% for Class A and 1.20% for Class Y. The fund has agreed to repay UBS AM for any waived fees/reimbursed expenses to the extent that it can do so over the following three fiscal years without causing the class expenses in any of those three years to exceed these expense caps and that UBS AM has not waived the right to do so. The fee waiver/expense reimbursement agreement may be terminated by the fund's board at any time and also will terminate automatically upon the expiration or termination of the fund's advisory contract with UBS AM. Upon termination of the agreement, however, UBS AM's three year recoupment rights will survive.
[5] Except that the expenses reflect the effects of the fund's fee waiver/expense reimbursement agreement for the first year only.