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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
ProspectusDate rr_ProspectusDate Nov. 28, 2011
PACE International Emerging Markets Equity Investments (First Prospectus Summary) | PACE International Emerging Markets Equity Investments
  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return, Heading rr_RiskReturnHeading PACE International Emerging Markets Equity Investments
Investment Objective, Heading rr_ObjectiveHeading Investment objective
investment Objective, Primary rr_ObjectivePrimaryTextBlock 
Capital appreciation.
Expense, Heading rr_ExpenseHeading Fees and expenses of the fund
Expense, Narrative rr_ExpenseNarrativeTextBlock 
These tables describe the fees and expenses that you may pay if you buy and hold
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 103 of the prospectus and in "Reduced sales charges, additional
purchase, exchange and redemption information and other services" on page 214 of
the fund's Statement of Additional Information.
Shareholder Fees, Caption rr_ShareholderFeesCaption Shareholder fees (fees paid directly from your investment)
Operating Expenses, Caption rr_OperatingExpensesCaption Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover, Heading rr_PortfolioTurnoverHeading Portfolio turnover
Portfolio Turnover 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 111%
of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 111.00%
Expense Breakpoint, Discounts 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, Heading rr_ExpenseExampleHeading Example
Expense Example, Narrative 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:
Investment Strategy, Heading rr_StrategyHeading Principal strategies
Investment Strategy, Narrative 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.
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 from time to time invest a significant portion of its assets in the
stocks of companies in various economic sectors, such as financials or
technology. 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
that invest in emerging markets. The fund may use forward currency contracts,
options, futures, swaps and other derivatives as part of its investment strategy
or to help manage portfolio risks.

Management process

UBS Global Asset Management (Americas) Inc. ("UBS Global AM"), the fund's
manager, selects investment advisors for the fund, subject to approval of the
fund's board. Mondrian Investment Partners Limited ("Mondrian"), William Blair &
Company, L.L.C. ("William Blair"), Delaware Management Company ("Delaware") and
Pzena Investment Management, LLC ("Pzena") currently serve as the fund's
investment advisors. The relative value of each investment advisor's share of
the fund's assets may change over time.

Mondrian conducts research on a global basis in an effort to identify securities
that have the potential for capital appreciation over a market cycle, using (1)
a value-oriented dividend discount methodology toward individual securities and
(2) market analysis that attempts to identify value across country boundaries.
This approach focuses on future anticipated dividends and their current
discounted worth, and then compares the values of different possible
investments. Currency returns can be an integral component of an investment's
total return, and Mondrian uses a purchasing power parity approach to assess the
value of individual currencies. Purchasing power parity attempts to identify the
amount of goods and services that a dollar will buy in the US and compares that
to the amount of a foreign currency required to buy the same amount of goods and
services in another country.

William Blair invests in a portfolio of mid cap and large cap equity securities
issued by companies in emerging markets worldwide, according to a quality growth
philosophy. William Blair's primary focus is on identifying such companies whose
growth characteristics (rate and durability) are underestimated by the market
and supported by quality management and strong competitive positioning. After
screening the universe of emerging country issuers for certain quality, growth
and liquidity characteristics to create a prospective list of investible
securities, William Blair undertakes detailed fundamental analysis of these
companies, focusing attention on areas where short- to intermediate-term
earnings trends and overall operating performance are improving or are strong.
Key considerations are the sustainability of a company's competitive advantage
relative to peers, its industry and market conditions, a sound financial
structure and high reinvestment rates that combine to create favorable
conditions for prospective growth. William Blair normally invests on a
relatively concentrated basis, with the number of holdings ranging between 50-80
securities. To a lesser extent, William Blair also takes into account country
selection and industry sector allocation. Normally, William Blair's investments
will be allocated among at least six different countries, and no more than 50%
of its segment of the fund may be invested in securities of issuers in any one
country at any given time. William Blair may obtain exposure to emerging markets
equity securities through limited investments in investment company securities,
such as exchange-traded funds ("ETFs").

Delaware selects growth-oriented and value-oriented investments, based on its
assessment of how an investment's market price compares to its intrinsic value.
Strong management and sustainable business franchise are also key
considerations. When selecting growth-oriented securities, Delaware typically
seeks companies with high growth caused by long-term economic factors, which may
include demographics, economic deregulation, and technological developments.
When selecting value-oriented securities, Delaware typically seeks companies
with lower valuations caused by cyclical economic factors or temporary changes
in business operations. In order to compare the value of different stocks,
Delaware estimates the current value of the anticipated future income stream of
a stock and considers whether its future income stream is expected to increase
faster than, slower than, or in line with the level of inflation. For investments
in emerging countries, there may be less information available for Delaware to
use in making this analysis than is available for investments in more developed
countries. Currency analysis is also an important part of Delaware's intrinsic
valuation exercise.

Pzena follows a disciplined investment process to implement its value
philosophy. Applying intensive fundamental research, Pzena looks for companies
where, in its opinion: (1) the current market price is low compared to the
company's normalized earnings power; (2) current earnings are below historic
norms; (3) the reasons behind the earnings shortfall are temporary; (4)
management has a viable strategy to generate earnings recovery; and/or (5) there
is meaningful downside protection in case the earnings recovery does not
materialize. Pzena typically invests prior to the emergence of an identifiable
earnings catalyst, while a company's near-term earnings lack clarity and its
share price is undervalued, because waiting for the catalyst to emerge before
making the investment can result in missing the initial stock price
appreciation. Pzena thus seeks to capture this initial stock price appreciation,
which Pzena believes will generally provide adequate compensation for its longer
holding period (on average three years).
Risk, Heading rr_RiskHeading Principal risks
Risk, Narrative 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.

Sector risk: Because the fund may invest a significant portion of its assets in
the stocks of companies in particular economic sectors, economic changes
adversely affecting such a sector may have more of an impact on the fund's
performance than another fund having a broader range of investments.

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. In addition, 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.

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 gains against the US dollar, the value of the holding increases
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.

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.

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, 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.

Derivatives risk: The value of "derivatives"-so-called because their value
"derives" from the value of an underlying asset, reference rate or index-may
rise or fall more rapidly than other investments. When using derivatives for
non-hedging purposes, it is possible for the fund to lose more than the amount
it invested in the derivative. The risks of investing in derivative instruments
also include market and management risks. In addition, many types of swaps and
non-exchange traded derivatives may be subject to liquidity risk, credit risk
and mispricing or valuation complexity. These derivatives risks are different
from, and may be greater than, the risks associated with investing directly in
securities and other instruments.

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.

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.

Investment company risk: Investments in open- or closed-end investment companies
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.

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.

Portfolio turnover risk: The fund may engage in frequent trading, which can
result in high portfolio turnover. A high portfolio turnover rate involves
greater expenses to the fund, including transaction costs, and is likely to
generate more taxable short-term gains for shareholders, which may have an
adverse impact on performance.

Management risk: The risk that the investment strategies, techniques and risk
analyses employed by an investment advisor may not produce the desired results.
Risk, Lose Money rr_RiskLoseMoney You may lose money by investing in the fund.
Risk, Not Insured Depository Institution 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 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 C 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 investment advisors were responsible for
managing portions of the fund's assets during previous periods. Mondrian assumed
day-to-day management of a portion of the fund's assets on September 28, 2004.
Delaware and Pzena each assumed day-to-day management of a separate portion of
the fund's assets on November 4, 2010. William Blair assumed day-to-day
management of a separate portion of the fund's assets on March 23, 2011. Updated
performance for the fund is available at
http://globalam-us.ubs.com/corpweb/performance.do.

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-deferred arrangements,
such as 401(k) plans or individual retirement accounts. After-tax returns for
other classes will vary from the Class C shares' after-tax returns shown. Prior
to September 30, 2003, Class C shares were subject to a maximum front-end sales
charge of 1.00%; this front end sales charge is not reflected in the average
annual total returns table for Class C shares.
Performance, Information Illustrates Variability of Returns rr_PerformanceInformationIllustratesVariabilityOfReturns The performance information that follows shows the fund's performance information in a bar chart and an average annual total returns table.
Performance, Availability Website Address rr_PerformanceAvailabilityWebSiteAddress http://globalam-us.ubs.com/corpweb/performance.do
Performance, Past Does Not Indicate Future 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 C Shares
Bar Chart, Does Not Reflect Sales Loads rr_BarChartDoesNotReflectSalesLoads The bar chart does not reflect the sales charges of the fund's Class C shares; if it did, the total returns shown would be lower.
Bar Chart, Closing rr_BarChartClosingTextBlock 
Total return January 1 - September 30, 2011: (22.85)%
Best quarter during calendar years shown-2Q 2009: 31.37%
Worst quarter during calendar years shown-4Q 2008: (28.45)%
Index No Deduction for Fees, Expenses, Taxes rr_IndexNoDeductionForFeesExpensesTaxes Index reflects no deduction for fees, expenses or taxes.
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-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table, One Class of after Tax Shown rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns for other classes will vary from the Class C shares' after-tax returns shown. Prior to September 30, 2003, Class C shares were subject to a maximum front-end sales charge of 1.00%; this front end sales charge is not reflected in the average annual total returns table for Class C shares.
PACE International Emerging Markets Equity Investments (First Prospectus Summary) | PACE International Emerging Markets Equity Investments | Class C
  
Risk/Return: rr_RiskReturnAbstract  
Year to Date Return, Label rr_YearToDateReturnLabel Total return January 1 - September 30, 2011:
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2011
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn (22.85%)
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best quarter during calendar years shown-2Q 2009:
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 31.37%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst quarter during calendar years shown-4Q 2008:
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (28.45%)
PACE International Emerging Markets Equity Investments | MSCI Emerging Markets Index
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, Label rr_AverageAnnualReturnLabel MSCI Emerging Markets Index (Index reflects no deduction for fees, expenses or taxes.)
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 19.20%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 13.11%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 16.23%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception 15.25% [1],[2]
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
Redemption fee (as a % of the amount redeemed within 90 days of purchase, if applicable) rr_RedemptionFeeOverRedemption (1.00%)
Exchange fee rr_ExchangeFee none
Management fees rr_ManagementFeesOverAssets 1.00%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses (includes administration fee of 0.10%) rr_OtherExpensesOverAssets 0.59%
Total annual fund operating expenses rr_ExpensesOverAssets 1.84%
Expense Example, With Redemption, 1 Year rr_ExpenseExampleYear01 727
Expense Example, With Redemption, 3 Years rr_ExpenseExampleYear03 1,097
Expense Example, With Redemption, 5 Years rr_ExpenseExampleYear05 1,491
Expense Example, With Redemption, 10 Years rr_ExpenseExampleYear10 2,590
Average Annual Returns, Label rr_AverageAnnualReturnLabel Class A Return before taxes
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 11.44%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 9.26%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 11.30%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception    [1]
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Dec. 11, 2000
PACE International Emerging Markets Equity Investments | Class B
  
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 5.00%
Redemption fee (as a % of the amount redeemed within 90 days of purchase, if applicable) rr_RedemptionFeeOverRedemption (1.00%)
Exchange fee rr_ExchangeFee none
Management fees rr_ManagementFeesOverAssets 1.00%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses (includes administration fee of 0.10%) rr_OtherExpensesOverAssets 0.64%
Total annual fund operating expenses rr_ExpensesOverAssets 2.64%
Expense Example, With Redemption, 1 Year rr_ExpenseExampleYear01 767
Expense Example, With Redemption, 3 Years rr_ExpenseExampleYear03 1,120
Expense Example, With Redemption, 5 Years rr_ExpenseExampleYear05 1,600
Expense Example, With Redemption, 10 Years rr_ExpenseExampleYear10 2,602 [3]
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 267
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 820
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,400
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,602 [3]
Average Annual Returns, Label rr_AverageAnnualReturnLabel Class B Return before taxes
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 12.05%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 9.38%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 11.36%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception    [1]
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Dec. 22, 2000
PACE International Emerging Markets Equity Investments | Class C
  
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 1.00%
Redemption fee (as a % of the amount redeemed within 90 days of purchase, if applicable) rr_RedemptionFeeOverRedemption (1.00%)
Exchange fee rr_ExchangeFee none
Management fees rr_ManagementFeesOverAssets 1.00%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses (includes administration fee of 0.10%) rr_OtherExpensesOverAssets 0.58%
Total annual fund operating expenses rr_ExpensesOverAssets 2.58%
Expense Example, With Redemption, 1 Year rr_ExpenseExampleYear01 361
Expense Example, With Redemption, 3 Years rr_ExpenseExampleYear03 802
Expense Example, With Redemption, 5 Years rr_ExpenseExampleYear05 1,370
Expense Example, With Redemption, 10 Years rr_ExpenseExampleYear10 2,915
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 261
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 802
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,370
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,915
Annual Return 2001 rr_AnnualReturn2001 (9.10%)
Annual Return 2002 rr_AnnualReturn2002 (14.78%)
Annual Return 2003 rr_AnnualReturn2003 53.43%
Annual Return 2004 rr_AnnualReturn2004 18.51%
Annual Return 2005 rr_AnnualReturn2005 27.91%
Annual Return 2006 rr_AnnualReturn2006 29.61%
Annual Return 2007 rr_AnnualReturn2007 34.25%
Annual Return 2008 rr_AnnualReturn2008 (52.19%)
Annual Return 2009 rr_AnnualReturn2009 62.85%
Annual Return 2010 rr_AnnualReturn2010 17.13%
Average Annual Returns, Label rr_AverageAnnualReturnLabel Class C Return before taxes
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 16.13%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 9.68%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 11.08%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception    [1]
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Dec. 01, 2000
PACE International Emerging Markets Equity Investments | Class C | After Taxes on Distributions
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, Label rr_AverageAnnualReturnLabel Class C Return after taxes on distributions
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 16.45%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 7.54%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 10.01%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception    [1]
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Dec. 01, 2000
PACE International Emerging Markets Equity Investments | Class C | After Taxes on Distributions and Sales
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, Label rr_AverageAnnualReturnLabel Class C Return after taxes on distributions and sale of fund shares
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 10.81%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 7.84%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 9.65%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception    [1]
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Dec. 01, 2000
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
Redemption fee (as a % of the amount redeemed within 90 days of purchase, if applicable) rr_RedemptionFeeOverRedemption (1.00%)
Exchange fee rr_ExchangeFee none
Management fees rr_ManagementFeesOverAssets 1.00%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses (includes administration fee of 0.10%) rr_OtherExpensesOverAssets 0.61%
Total annual fund operating expenses rr_ExpensesOverAssets 1.61%
Expense Example, With Redemption, 1 Year rr_ExpenseExampleYear01 164
Expense Example, With Redemption, 3 Years rr_ExpenseExampleYear03 508
Expense Example, With Redemption, 5 Years rr_ExpenseExampleYear05 876
Expense Example, With Redemption, 10 Years rr_ExpenseExampleYear10 1,911
Average Annual Returns, Label rr_AverageAnnualReturnLabel Class Y Return before taxes
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 18.13%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 10.91%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10   
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception 11.57% [1]
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Feb. 09, 2001
[1] Life of class returns shown only for those share classes with less than ten calendar years of performance.
[2] Average annual total return for the MSCI Emerging Markets Index for the life of Class Y shares.
[3] Reflects conversion to Class A shares after a maximum of 6 years.