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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
ProspectusDate rr_ProspectusDate Nov. 28, 2011
PACE International Fixed Income Investments (Second Prospectus Summary) | PACE International Fixed Income Investments
  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return, Heading rr_RiskReturnHeading PACE International Fixed Income Investments
Investment Objective, Heading rr_ObjectiveHeading Investment objective
investment Objective, Primary rr_ObjectivePrimaryTextBlock 
High total return.
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.
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 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. 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 fixed income
securities. Such investments may include non-US government bonds (including
bonds issued by supranational organizations and quasi-governmental entities), US
government bonds, and bonds of US or non-US private issuers. While the fund may
invest in US fixed income securities, it expects to invest mainly in non-US
fixed income securities under normal circumstances. The fund invests primarily
in high-grade bonds of governmental and private issuers in developed
countries. These high-grade bonds are rated in one of the three highest rating
categories or are of comparable quality. The fund invests, to a limited extent,
in lower rated bonds of governmental and private issuers, including bonds that
are rated below investment grade and emerging market securities.

The fund invests in bonds of varying maturities, but normally limits its
portfolio "duration" to between four and eight years. Duration is a measure of
the fund's exposure to interest rate risk-a longer duration means that changes
in market interest rates are likely to have a larger effect on the value of the
fund's portfolio.

The fund's investments may include mortgage- and asset-backed securities. 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. This includes investing in credit default swaps and inflation-linked
swaps as part of managing the fund's assets.

There are different types of US government securities, including those issued or
guaranteed by the US government, its agencies and its instrumentalities, and
they have different types of government support. Some are supported by the full
faith and credit of the US, while others are supported by (1) the ability of the
issuer to borrow from the US Treasury; (2) the credit of the issuing agency,
instrumentality or government-sponsored entity; (3) pools of assets, such as
mortgages; or (4) the US government in some other way.

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. Rogge Global Partners plc ("Rogge Global Partners") currently
serves as the fund's investment advisor. Rogge Global Partners seeks to invest
in bonds of financially healthy entities because it believes that these
investments produce the highest bond and currency returns over time. In deciding
which bonds to buy for the fund, Rogge Global Partners uses a top-down analysis
to find value across countries and to forecast interest and currency-exchange
rates over a one-year horizon in those countries, and an optimization model to
help determine country, currency and duration positions for the fund. Rogge
Global Partners generally sells securities (1) that no longer meet these
selection criteria; (2) when it identifies more attractive investment
opportunities; or (3) to adjust the average duration of the fund assets it
manages.
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:

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.

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.

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.

Non-diversification risk: The fund is a non-diversified investment company,
which means that the fund may invest more of its assets in a smaller number of
issuers than a diversified investment company. As a non-diversified fund, the
fund's share price may be more volatile and the fund has a greater potential to
realize losses upon the occurrence of adverse events affecting a particular
issuer.

Prepayment risk: The fund's mortgage- and asset-backed securities may be prepaid
more rapidly than expected, especially when interest rates are falling, and the
fund may have to reinvest those prepayments at lower interest rates. When interest
rates are rising, slower prepayments may extend the duration of the securities
and may reduce their value.

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. Derivatives relating to fixed income
markets are especially susceptible to interest rate risk and credit risk. In
addition, many types of swaps and other 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.

US Government securities risk: There are different types of US government
securities with different levels of credit risk, including the risk of default,
depending on the nature of the particular government support for that security.
For example, a US government-sponsored entity, such as Federal National Mortgage
Association ("Fannie Mae") or Federal Home Loan Mortgage Corporation ("Freddie
Mac"), although chartered or sponsored by an Act of Congress, may issue
securities that are neither insured nor guaranteed by the US Treasury and are
therefore riskier than those that are.

Illiquidity risk: The risk that investments cannot be readily sold at the
desired time or price, and the fund may have to accept a lower price or may not
be able to sell the security at all. An inability to sell securities can
adversely affect the fund's value or prevent the fund from taking advantage of
other investment opportunities.

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 the investment advisor may not produce the desired results.
Risk, Lose Money rr_RiskLoseMoney You may lose money by investing in the fund.
Risk, Nondiversified Status rr_RiskNondiversifiedStatus The fund is a non-diversified investment company, which means that the fund may invest more of its assets in a smaller number of issuers than a diversified investment company. As a non-diversified fund, the fund's share price may be more volatile and the fund has a greater potential to realize losses upon the occurrence of adverse events affecting a particular issuer.
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 maximum annual PACE Select Advisors Program fee; 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 for the period between October 10, 2000 and August 22,
2007, when Rogge Global Partners and another investment advisor each was
responsible for managing a separate portion of the fund's assets. Prior to
October 10, 2000, Rogge Global Partners was responsible for managing all the
fund's assets. 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.
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 Fixed Income Investments Annual Total Returns of Class P Shares
Bar Chart, Does Not Reflect Sales Loads rr_BarChartDoesNotReflectSalesLoads The bar chart does not reflect the maximum annual PACE Select Advisors Program fee; if it did, the total returns shown would be lower.
Bar Chart, Closing rr_BarChartClosingTextBlock 
Total return January 1 - September 30, 2011: 3.62%
Best quarter during calendar years shown-3rd Q 2010: 11.45%
Worst quarter during calendar years shown-3rd Q 2008: (7.33)%
Performance Table, Market Index Changed rr_PerformanceTableMarketIndexChanged 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 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 Actual after-tax returns depend on an investor's tax situation and may differ from those shown.
Average Annual Returns, Caption rr_AverageAnnualReturnCaption Average annual total returns (for the periods ended December 31, 2010)
PACE International Fixed Income Investments (Second Prospectus Summary) | PACE International Fixed Income Investments | Class P
  
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 3.62%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best quarter during calendar years shown-3rd Q 2010:
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Sep. 30, 2010
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 11.45%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst quarter during calendar years shown-3rd Q 2008:
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (7.33%)
PACE International Fixed Income Investments | Barclays Capital Global Aggregate ex Us Index
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, Label rr_AverageAnnualReturnLabel Barclays Capital Global Aggregate ex US Index (Index reflects no deduction for fees, expenses or taxes.)
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 4.95%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 7.19%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 7.42%
PACE International Fixed Income Investments | Class P
  
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 offering price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Redemption fee (as a % of the amount redeemed within 90 days of purchase, if applicable) rr_RedemptionFeeOverRedemption (1.00%)
Maximum annual account fee for PACE Select Advisors Program (as a % of average value of shares held on the last calendar day of the previous quarter) rr_MaximumAccountFeeOverAssets 2.00%
Management fees rr_ManagementFeesOverAssets 0.65%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses (includes administration fee of 0.10%) rr_OtherExpensesOverAssets 0.46%
Total annual fund operating expenses rr_ExpensesOverAssets 1.11%
Management fee waiver/expense reimbursements rr_FeeWaiverOrReimbursementOverAssets (0.11%) [2]
Total annual fund operating expenses after fee waiver and/or expense reimbursements rr_NetExpensesOverAssets 1.00% [2]
Expense Example, With Redemption, 1 Year rr_ExpenseExampleYear01 303
Expense Example, With Redemption, 3 Years rr_ExpenseExampleYear03 949
Expense Example, With Redemption, 5 Years rr_ExpenseExampleYear05 1,621
Expense Example, With Redemption, 10 Years rr_ExpenseExampleYear10 3,413
Annual Return 2001 rr_AnnualReturn2001 (1.22%)
Annual Return 2002 rr_AnnualReturn2002 17.42%
Annual Return 2003 rr_AnnualReturn2003 14.31%
Annual Return 2004 rr_AnnualReturn2004 10.03%
Annual Return 2005 rr_AnnualReturn2005 (5.98%)
Annual Return 2006 rr_AnnualReturn2006 5.56%
Annual Return 2007 rr_AnnualReturn2007 10.35%
Annual Return 2008 rr_AnnualReturn2008 1.27%
Annual Return 2009 rr_AnnualReturn2009 10.13%
Annual Return 2010 rr_AnnualReturn2010 5.17%
Average Annual Returns, Label rr_AverageAnnualReturnLabel Class P Return before taxes
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 3.08%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 4.33%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 4.37%
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Aug. 24, 1995
PACE International Fixed Income Investments | Class P | After Taxes on Distributions
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, Label rr_AverageAnnualReturnLabel Class P Return after taxes on distributions
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 2.12%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 2.57%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 2.63%
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Aug. 24, 1995
PACE International Fixed Income Investments | Class P | After Taxes on Distributions and Sales
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, Label rr_AverageAnnualReturnLabel Class P Return after taxes on distributions and sale of fund shares
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 1.99%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 2.66%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 2.72%
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Aug. 24, 1995
[1] Except that the expenses reflect the effects of the fund's fee waiver/expense reimbursement agreement for the first year only.
[2] 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 (1) waive its management fees through November 28, 2012 to the extent necessary to reflect the lower sub-advisory fee paid by UBS Global AM to Rogge Global Partners plc, the fund's investment advisor; and (2) waive its management fees and/or reimburse expenses so that the fund's ordinary total operating expenses 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 1.00%. The fund has agreed to repay UBS Global AM for any waived fees/reimbursed expenses (pursuant to item (2)) 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 this expense cap. 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.