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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
ProspectusDate rr_ProspectusDate Nov. 28, 2011
PACE International Equity Investments (First Prospectus Summary) | PACE International Equity Investments
  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return, Heading rr_RiskReturnHeading PACE International 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 66%
of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 66.00%
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:
 [1]
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.
The fund invests primarily in stocks of companies that are domiciled in
developed foreign countries and principally traded in Japanese, European,
Pacific and Australian securities markets or traded in US securities markets.
Such investments may include common stocks, which may or may not pay dividends,
and securities convertible into common stocks, of companies domiciled outside
the US.

The fund may invest, to a limited extent, in (1) stocks of companies in emerging
markets, including Asia, Latin America and other regions where markets may not
yet fully reflect the potential of the developing economy, and (2) securities of
other investment companies that invest in foreign markets and securities
convertible into stocks, including convertible bonds that are below investment
grade. 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"), J.P. Morgan
Investment Management Inc. ("J.P. Morgan") and Martin Currie Inc. ("Martin
Currie") 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.

J.P. Morgan manages two separate segments of the fund's assets, utilizing
distinct investment strategies and portfolio management for each. In managing
one segment of the fund's assets, the International Research Enhanced Index
Strategy segment ("International REI" segment), J.P. Morgan uses a bottom-up,
research driven strategy that seeks to generate risk characteristics and
maintain regional weights and sector/industry weights that are close to those of
the fund's benchmark, while also capitalizing on the firm's proprietary research
capabilities in seeking to generate outperformance. The strategy is driven by
valuation based fundamental analysis focused on normalized earnings and earnings
growth. Stock selection is the focus, and is expected to be the primary source
of added value.

In managing the second segment of the fund's assets, the Europe, Australasia,
and Far East Opportunities Strategy segment ("EAFE Opportunities" segment), J.P.
Morgan uses an active equity strategy. J.P. Morgan applies a uniform valuation
methodology across regions and sectors, and analysts conduct thorough analysis
with a particular emphasis on a company's normalized (or mid-cycle) earnings and
their intermediate growth rate. J.P. Morgan typically focuses on the most
attractive companies, within a sector, that possess a catalyst for share price
appreciation.

Martin Currie uses a fully integrated international investment process, in which
it compares and ranks stock opportunities across the whole investment universe.
Martin Currie employs fundamental company and sector research, supported by a range
of quantitative screening tools. Martin Currie has a highly active 'conviction'
approach, seeking the best opportunities for growth across global stock markets.
It believes change, which it attempts, to identify, evaluate and exploit at an early
stage, is the central dynamic behind stock price movement. This means recognizing
change at company level (management changes, product strategies, acquisitions, etc.)
and at macro level(legislative changes, economic prospects, sector dynamics, etc.).
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.

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 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.

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.

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.

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. Life of class performance for the index is Class Y's inception
month-end. 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 and
J.P. Morgan (with respect to the International REI segment) each assumed
day-to-day management of a separate portion of the fund's assets on April 1,
2004. J.P. Morgan assumed day-to-day management of a second, separate portion
(the EAFE Opportunities segment) of the fund's assets on November 8, 2010.
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 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: (14.82)%
Best quarter during calendar years shown-2Q 2009: 22.47%
Worst quarter during calendar years shown-3Q 2002: (22.38)%
Index No Deduction for Fees, Expenses, Taxes rr_IndexNoDeductionForFeesExpensesTaxes Index reflects no deduction for fees and 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-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Average Annual Returns, Caption rr_AverageAnnualReturnCaption Average annual total returns (for the periods ended December 31, 2010)
PACE International Equity Investments (First Prospectus Summary) | PACE International Equity Investments | Class A
  
Risk/Return: rr_RiskReturnAbstract  
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination 2012-11-28
PACE International Equity Investments (First Prospectus Summary) | PACE International Equity Investments | Class B
  
Risk/Return: rr_RiskReturnAbstract  
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination 2012-11-28
PACE International Equity Investments (First Prospectus Summary) | PACE International Equity Investments | Class C
  
Risk/Return: rr_RiskReturnAbstract  
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination 2012-11-28
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 (14.82%)
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 22.47%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst quarter during calendar years shown-3Q 2002:
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2002
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (22.38%)
PACE International Equity Investments (First Prospectus Summary) | PACE International Equity Investments | Class Y
  
Risk/Return: rr_RiskReturnAbstract  
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination 2012-11-28
PACE International Equity Investments | MSCI EAFE Index (net)
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, Label rr_AverageAnnualReturnLabel MSCI EAFE Index (net) (Index reflects no deduction for fees and expenses.)
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 7.75%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 2.46%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 3.50%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception 3.54% [2],[3]
PACE International Equity Investments | Class A
  
Risk/Return: rr_RiskReturnAbstract  
Maximum deferred sales charge (load) (as a % of the lesser of the offering price or the redemption price) rr_MaximumDeferredSalesChargeOverOfferingPrice 5.50%
Maximum Deferred Sales Charge (as a percentage) rr_MaximumDeferredSalesChargeOverOther 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 0.79%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses (includes administration fee of 0.10%) rr_OtherExpensesOverAssets 0.36%
Total annual fund operating expenses rr_ExpensesOverAssets 1.40%
Management fee waiver/expense reimbursements rr_FeeWaiverOrReimbursementOverAssets    [4]
Total annual fund operating expenses after fee waiver and/or expense reimbursements rr_NetExpensesOverAssets 1.40% [4]
Expense Example, With Redemption, 1 Year rr_ExpenseExampleYear01 685
Expense Example, With Redemption, 3 Years rr_ExpenseExampleYear03 969
Expense Example, With Redemption, 5 Years rr_ExpenseExampleYear05 1,274
Expense Example, With Redemption, 10 Years rr_ExpenseExampleYear10 2,137
Average Annual Returns, Label rr_AverageAnnualReturnLabel Class A Return before taxes
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 (1.81%)
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 (0.42%)
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 1.28%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception    [2]
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Nov. 27, 2000
PACE International Equity Investments | Class B
  
Risk/Return: rr_RiskReturnAbstract  
Maximum deferred sales charge (load) (as a % of the lesser of the offering price or the redemption price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage) rr_MaximumDeferredSalesChargeOverOther 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 0.79%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses (includes administration fee of 0.10%) rr_OtherExpensesOverAssets 1.71%
Total annual fund operating expenses rr_ExpensesOverAssets 3.50%
Management fee waiver/expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (1.20%) [4]
Total annual fund operating expenses after fee waiver and/or expense reimbursements rr_NetExpensesOverAssets 2.30% [4]
Expense Example, With Redemption, 1 Year rr_ExpenseExampleYear01 733
Expense Example, With Redemption, 3 Years rr_ExpenseExampleYear03 1,263
Expense Example, With Redemption, 5 Years rr_ExpenseExampleYear05 1,915
Expense Example, With Redemption, 10 Years rr_ExpenseExampleYear10 2,765 [5]
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 233
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 963
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,715
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,765 [5]
Average Annual Returns, Label rr_AverageAnnualReturnLabel Class B Return before taxes
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 (2.14%)
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 (0.60%)
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 1.27%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception    [2]
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Nov. 27, 2000
PACE International Equity Investments | Class C
  
Risk/Return: rr_RiskReturnAbstract  
Maximum deferred sales charge (load) (as a % of the lesser of the offering price or the redemption price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage) rr_MaximumDeferredSalesChargeOverOther 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 0.79%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses (includes administration fee of 0.10%) rr_OtherExpensesOverAssets 0.44%
Total annual fund operating expenses rr_ExpensesOverAssets 2.23%
Management fee waiver/expense reimbursements rr_FeeWaiverOrReimbursementOverAssets    [4]
Total annual fund operating expenses after fee waiver and/or expense reimbursements rr_NetExpensesOverAssets 2.23% [4]
Expense Example, With Redemption, 1 Year rr_ExpenseExampleYear01 326
Expense Example, With Redemption, 3 Years rr_ExpenseExampleYear03 697
Expense Example, With Redemption, 5 Years rr_ExpenseExampleYear05 1,195
Expense Example, With Redemption, 10 Years rr_ExpenseExampleYear10 2,565
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 226
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 697
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,195
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,565
Annual Return 2001 rr_AnnualReturn2001 (23.78%)
Annual Return 2002 rr_AnnualReturn2002 (19.91%)
Annual Return 2003 rr_AnnualReturn2003 38.11%
Annual Return 2004 rr_AnnualReturn2004 17.22%
Annual Return 2005 rr_AnnualReturn2005 12.81%
Annual Return 2006 rr_AnnualReturn2006 26.98%
Annual Return 2007 rr_AnnualReturn2007 9.91%
Annual Return 2008 rr_AnnualReturn2008 (44.49%)
Annual Return 2009 rr_AnnualReturn2009 24.43%
Annual Return 2010 rr_AnnualReturn2010 3.00%
Average Annual Returns, Label rr_AverageAnnualReturnLabel Class C Return before taxes
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 2.00%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 (0.14%)
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 1.02%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception    [2]
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Nov. 27, 2000
PACE International 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 1.94%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 (0.93%)
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 0.68%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception    [2]
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Nov. 27, 2000
PACE International 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 1.55%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 0.02%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 1.02%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception    [2]
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Nov. 27, 2000
PACE International Equity Investments | Class Y
  
Risk/Return: rr_RiskReturnAbstract  
Maximum deferred sales charge (load) (as a % of the lesser of the offering price or the redemption price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage) rr_MaximumDeferredSalesChargeOverOther 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 0.79%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses (includes administration fee of 0.10%) rr_OtherExpensesOverAssets 0.37%
Total annual fund operating expenses rr_ExpensesOverAssets 1.16%
Management fee waiver/expense reimbursements rr_FeeWaiverOrReimbursementOverAssets    [4]
Total annual fund operating expenses after fee waiver and/or expense reimbursements rr_NetExpensesOverAssets 1.16% [4]
Expense Example, With Redemption, 1 Year rr_ExpenseExampleYear01 118
Expense Example, With Redemption, 3 Years rr_ExpenseExampleYear03 368
Expense Example, With Redemption, 5 Years rr_ExpenseExampleYear05 638
Expense Example, With Redemption, 10 Years rr_ExpenseExampleYear10 1,409
Average Annual Returns, Label rr_AverageAnnualReturnLabel Class Y Return before taxes
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 4.15%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 1.06%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10   
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception 2.33% [2]
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Jan. 17, 2001
[1] Except that the expenses reflect the effects of the fund's fee waiver/expense reimbursement agreement for the first year only.
[2] Life of class returns shown only for those share classes with less than ten calendar years of performance.
[3] Average annual total return for the MSCI EAFE Index (net) for the life of Class Y shares.
[4] The fund and UBS Global Asset Management (Americas) Inc. ("UBS Global AM") have entered into a written fee waiver/expense reimbursement agreement pursuant to which UBS Global 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 28, 2012 (excluding dividend expense, borrowing costs, and interest expense relating to short sales, and expenses attributable to investment in other investment companies, interest, taxes, brokerage commissions and extraordinary expenses) would not exceed 1.55% for Class A, 2.30% for Class B, 2.30% for Class C and 1.30% for Class Y. The fund has agreed to repay UBS Global AM for any waived fees/reimbursed expenses to the extent that it can do so over the following three fiscal years without causing the fund's expenses in any of those three years to exceed these expense caps. 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 Global AM. Upon termination of the agreement, however, UBS Global AM's three year recoupment rights will survive.
[5] Reflects conversion to Class A shares after a maximum of 6 years.