0001104659-13-071096.txt : 20130919 0001104659-13-071096.hdr.sgml : 20130919 20130919160239 ACCESSION NUMBER: 0001104659-13-071096 CONFORMED SUBMISSION TYPE: 485BPOS PUBLIC DOCUMENT COUNT: 8 FILED AS OF DATE: 20130919 DATE AS OF CHANGE: 20130919 EFFECTIVENESS DATE: 20130919 FILER: COMPANY DATA: COMPANY CONFORMED NAME: UBS RMA TAX FREE FUND INC CENTRAL INDEX KEY: 0000703875 IRS NUMBER: 133135587 STATE OF INCORPORATION: MD FISCAL YEAR END: 0630 FILING VALUES: FORM TYPE: 485BPOS SEC ACT: 1933 Act SEC FILE NUMBER: 002-78310 FILM NUMBER: 131105709 BUSINESS ADDRESS: STREET 1: C/O UBS GLOBAL ASSET MANAGEMENT (AMERICA STREET 2: 12TH FLOOR 1285 AVENUE OF THE AMERICAS CITY: NEW YORK STATE: NY ZIP: 10019 BUSINESS PHONE: 212-821-3000 MAIL ADDRESS: STREET 1: C/O UBS GLOBAL ASSET MANAGEMENT (AMERICA STREET 2: 12TH FLOOR 1285 AVENUE OF THE AMERICAS CITY: NEW YORK STATE: NY ZIP: 10019 FORMER COMPANY: FORMER CONFORMED NAME: UBS PAINEWEBBER RMA TAX FREE FUND INC DATE OF NAME CHANGE: 20010625 FORMER COMPANY: FORMER CONFORMED NAME: PAINEWEBBER RMA TAX FREE FUND INC DATE OF NAME CHANGE: 19920703 FILER: COMPANY DATA: COMPANY CONFORMED NAME: UBS RMA TAX FREE FUND INC CENTRAL INDEX KEY: 0000703875 IRS NUMBER: 133135587 STATE OF INCORPORATION: MD FISCAL YEAR END: 0630 FILING VALUES: FORM TYPE: 485BPOS SEC ACT: 1940 Act SEC FILE NUMBER: 811-03504 FILM NUMBER: 131105710 BUSINESS ADDRESS: STREET 1: C/O UBS GLOBAL ASSET MANAGEMENT (AMERICA STREET 2: 12TH FLOOR 1285 AVENUE OF THE AMERICAS CITY: NEW YORK STATE: NY ZIP: 10019 BUSINESS PHONE: 212-821-3000 MAIL ADDRESS: STREET 1: C/O UBS GLOBAL ASSET MANAGEMENT (AMERICA STREET 2: 12TH FLOOR 1285 AVENUE OF THE AMERICAS CITY: NEW YORK STATE: NY ZIP: 10019 FORMER COMPANY: FORMER CONFORMED NAME: UBS PAINEWEBBER RMA TAX FREE FUND INC DATE OF NAME CHANGE: 20010625 FORMER COMPANY: FORMER CONFORMED NAME: PAINEWEBBER RMA TAX FREE FUND INC DATE OF NAME CHANGE: 19920703 0000703875 S000002631 UBS RMA TAX FREE FUND INC C000007234 UBS RMA TAX FREE FUND INC 485BPOS 1 a13-19402_7485bpos.htm 485BPOS

 

As filed with the Securities and Exchange Commission on September 19, 2013

1933 Act Registration No.   2-78310

1940 Act Registration No. 811-3504

 

 

 

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

FORM N-1A

 

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 x

 

Pre-Effective Amendment No.       o

Post-Effective Amendment No. 48 x

 

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 x

 

Amendment No. 47 x

 

UBS RMA TAX-FREE FUND INC.

(Exact name of registrant as specified in charter)

 

1285 Avenue of the Americas

New York, New York 10019-6028

(Address of principal executive offices)

 

Registrant’s telephone number, including area code: (212) 821-3000

 

MARK F. KEMPER, ESQ.

UBS Global Asset Management (Americas) Inc.

1285 Avenue of the Americas

New York, New York 10019-6028

(Name and address of agent for service)

 

Copies to:

JACK W. MURPHY, ESQ.

Dechert LLP

1990 K Street, N.W.

Washington, D.C.  20006-2401

Telephone:  (202) 261-3300

 

Approximate date of proposed public offering:  effective date of this Post-Effective Amendment.

 

It is proposed that this filing will become effective:

 

x Immediately upon filing pursuant to Rule 485(b)

o On                                  pursuant to Rule 485(b)

o 60 days after filing pursuant to Rule 485(a)(1)

o On                                  pursuant to Rule 485(a)(1)

o 75 days after filing pursuant to Rule 485(a)(2)

o On                                  pursuant to Rule 485(a)(2)

 

Title of Securities Being Registered:  Shares of Common Stock of UBS RMA Tax-Free Fund Inc.

 

 

 



 

SIGNATURES

 

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant certifies that it meets all the requirements for effectiveness of this Post-Effective Amendment to its Registration Statement under Rule 485(b) under the Securities Act of 1933 and has duly caused this Post-Effective Amendment to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of New York and State of New York, on the 19th day of September, 2013.

 

 

 

UBS RMA TAX-FREE FUND INC.

 

 

 

 

 

By:

/s/ Keith A. Weller

 

 

Keith A. Weller

 

 

Vice President and Assistant Secretary

 

Pursuant to the requirements of the Securities Act of 1933, this Post-Effective Amendment has been signed below by the following persons in the capacities and on the dates indicated:

 

SIGNATURE

 

TITLE

 

DATE

 

 

 

 

 

/s/ Richard Q. Armstrong

 

Director and Chairman of the Board of Directors

 

September 19, 2013

Richard Q. Armstrong*

 

 

 

 

 

 

 

 

 

/s/ Alan S. Bernikow

 

Director

 

September 19, 2013

Alan S. Bernikow*

 

 

 

 

 

 

 

 

 

/s/ Richard R. Burt

 

Director

 

September 19, 2013

Richard R. Burt*

 

 

 

 

 

 

 

 

 

/s/ Mark E. Carver

 

President

 

September 19, 2013

Mark E. Carver**

 

 

 

 

 

 

 

 

 

/s/ Thomas Disbrow

 

Vice President and Treasurer

 

September 19, 2013

Thomas Disbrow

 

 

 

 

 

 

 

 

 

/s/ Meyer Feldberg

 

Director

 

September 19, 2013

Meyer Feldberg*

 

 

 

 

 

 

 

 

 

/s/ Bernard H. Garil

 

Director

 

September 19, 2013

Bernard H. Garil*

 

 

 

 

 

 

 

 

 

/s/ Heather R. Higgins

 

Director

 

September 19, 2013

Heather R. Higgins*

 

 

 

 

 

 

 

 

 

/s/ Barry M. Mandinach

 

Director

 

September 19, 2013

Barry M. Mandinach***

 

 

 

 

 

*                                         Signatures affixed by Lisa R. Price pursuant to Powers of Attorney dated November 14, 2007 and incorporated by reference from Post-Effective Amendment No. 53 to the registration statement of UBS Master Series, Inc., SEC File No. 33-2524, filed June 26, 2008.

 

C-2



 

**                                  Signature affixed by Lisa R. Price pursuant to Power of Attorney dated May 19, 2010 and incorporated by reference from Post-Effective Amendment No. 53 to the registration statement of UBS Cashfund Inc., SEC File No. 2-60655, filed July 28, 2010.

 

***                           Signature affixed by Lisa R. Price pursuant to Power of Attorney dated July 20, 2010 and incorporated by reference from Post-Effective Amendment No. 53 to the registration statement of UBS Cashfund Inc., SEC File No. 2-60655, filed July 28, 2010.

 

C-3



 

EXHIBIT INDEX

 

EX-101.INS

XBRL Instance Document

EX-101.SCH

XBRL Taxonomy Extension Schema Document

EX-101.CAL

XBRL Taxonomy Extension Calculation Linkbase

EX-101.DEF

XBRL Taxonomy Extension Definition Linkbase

EX-101.LAB

XBRL Taxonomy Extension Labels Linkbase

EX-101.PRE

XBRL Taxonomy Extension Presentation Linkbase

 

C-4


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The example also assumes that your investment has a 5% return each year and that the fund&#8217;s operating expenses remain the same.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</font> </p> 60 189 329 738 ~ http://ubs.com/20130829/role/ScheduleExpenseExampleTransposed20003 column dei_LegalEntityAxis compact ck0000703875_S000002631Member row primary compact * ~ <p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">This example does not reflect RMA/Business Services Account BSA program fees.</font> </p> Principal strategies <p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Principal investments</b></font> </p> <br/><p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">The fund is a money market fund and seeks to maintain a stable price of $1.00 per share. To do this, the fund invests in a diversified portfolio of high quality, municipal money market instruments.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">Money market instruments generally are short-term debt obligations and similar securities. They also may include longer-term bonds that have variable interest rates or other special features that give them the financial characteristics of short-term debt. Under normal circumstances, the fund will invest at least 80% of its net assets in investments, the income from which is exempt from federal income tax. While the fund normally does not do so, it may invest in securities that are subject to the federal alternative minimum tax. If the fund were to do so, under normal circumstances, the fund may invest only up to 20% of its net assets in municipal securities that pay interest that is an item of tax preference for purposes of the alternative minimum tax.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Management process</b></font> </p> <br/><p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">UBS Global Asset Management (Americas) Inc. (&#8220;UBS Global AM&#8221;) acts as the fund&#8217;s investment advisor. As investment advisor, UBS Global AM makes the fund&#8217;s investment decisions. UBS Global AM selects money market instruments for the fund based on its assessment of relative values and changes in market and economic conditions.</font> </p> Principal risks <p style="margin-top: 0px; margin-bottom: 0px;"> <font style="font-family: ARIAL; font-size: small;">All investments carry a certain amount of risk, and the fund cannot guarantee that it will achieve its investment objective. While the fund seeks to maintain the value of your investment at $1.00 per share, you may lose money by investing in the fund. An investment in the fund is not a bank deposit and is neither insured nor guaranteed by the Federal Deposit Insurance <font style="font-family: ARIAL; font-size: small;">Corporation or any other government agency. Money market instruments generally have a low risk of loss, but they are not risk-free. The principal risks presented by an investment in the fund are:</font><br /> </font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Municipal securities risk:</b> Municipal securities are subject to interest rate and credit risks. The ability of a municipal issuer to make payments and the value of municipal securities can be affected by uncertainties in the municipal securities market. Such uncertainties could cause increased volatility in the municipal securities market and could negatively impact the fund&#8217;s net asset value and/or the distributions paid by the fund. Municipalities continue to experience difficulties in the current economic and political environment.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Credit risk:</b> Issuers of money market instruments may fail to make payments when due, or they may become less willing or less able to do so.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Interest rate risk:</b> The value of the fund&#8217;s investments generally will fall when short-term interest rates rise, and its yield will tend to lag behind prevailing rates.</font> </p> <br/><p style="margin-top: 12px; margin-bottom: 0px;"> <font style="font-family: ARIAL; font-size: small;"><strong>Market risk:</strong> The risk that the market value of the fund&#8217;s investments may fluctuate, sometimes rapidly or unpredictably, as the markets fluctuate, which may affect the fund&#8217;s ability to maintain a $1.00 share price. Market risk may affect a single issuer, industry, or sector <font style="font-family: ARIAL; font-size: small;">of the economy, or it may affect the market as a whole. Moreover, changing market, economic and political conditions in one country or geographic region could adversely impact market, economic and political conditions in other countries or regions.</font><br /> </font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Liquidity risk:</b> Although the fund invests in a diversified portfolio of high quality instruments, the fund&#8217;s investments may become less liquid as a result of market developments or adverse investor perception.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Management risk:</b> The risk that the investment strategies, techniques and risk analyses employed by the advisor may not produce the desired results.</font> </p> While the fund seeks to maintain the value of your investment at $1.00 per share, you may lose money by investing in the fund. An investment in the fund is not a bank deposit and is neither insured nor guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Investment objective <p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">Maximum current income exempt from federal income tax consistent with liquidity and conservation of capital.</font> </p> Fees and expenses <p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">These tables describe the fees and expenses that you may pay if you buy and hold shares of the fund.</font> </p> 0.0000 0.0000 150 150 0.0038 0.0015 0.0006 0.0059 ~ http://ubs.com/20130829/role/ScheduleShareholderFees20001 column dei_LegalEntityAxis compact ck0000703875_S000002631Member row primary compact * ~ ~ http://ubs.com/20130829/role/ScheduleAnnualFundOperatingExpenses20002 column dei_LegalEntityAxis compact ck0000703875_S000002631Member row primary compact * ~ Shareholder transaction expenses (fees paid directly from your investment): Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment): Performance <p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Risk/return bar chart and table</b></font> </p> <br/><p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">The following bar chart and table provide information about the fund&#8217;s performance and thus give some indication of the risks of an investment in the fund.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">The bar chart shows how the fund&#8217;s performance has varied from year to year. The table that follows the bar chart shows the average annual returns over various time periods for the fund&#8217;s shares.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">The fund&#8217;s past performance does not necessarily indicate how the fund will perform in the future.</font> </p> Total Return 0.0044 0.0063 0.0185 0.0287 0.0309 0.0151 0.0002 0.0001 0.0001 0.0001 ~ http://ubs.com/20130829/role/ScheduleAnnualTotalReturnsBarChart20004 column dei_LegalEntityAxis compact ck0000703875_S000002631Member column rr_ProspectusShareClassAxis compact ck0000703875_C000007234Member row primary compact * ~ Best quarter 0.0079 2007-09-30 Worst quarter 0.0000 2011-03-31 Total return January 1 to June 30, 2013: 0.0000 2013-06-30 <p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">Total return January&#160;1 to June&#160;30, 2013: 0.00% (Actual total return was 0.005%)</font> </p> <br/><p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">Best quarter during years shown&#8212;3Q 2007: 0.79%</font> </p> <br/><p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">Worst quarters during years shown&#8212;3Q 2009; 1Q, 2Q&#160;&amp; 3Q 2010;&#160;&amp; 1Q 2011: 0.00%</font> </p> <br/><p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">(Actual total returns were 0.0024%)</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">Updated performance information is available by contacting your Financial Advisor or by calling 1-888-793 8637 (Option #1).</font> </p> 0.0001 0.0031 0.0104 ~ http://ubs.com/20130829/role/ScheduleAverageAnnualReturnsTransposed20005 column dei_LegalEntityAxis compact ck0000703875_S000002631Member column rr_PerformanceMeasureAxis compact * row primary compact * ~ The fund's past performance does not necessarily indicate how the fund will perform in the future. 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Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a false04false 4rr_ObjectivePrimaryTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">Maximum current income exempt from federal income tax consistent with liquidity and conservation of capital.</font> </p>falsefalsefalsenonnum:textBlockItemTypenaInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a false05false 4rr_ExpenseHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00Fees and expensesfalsefalsefalsexbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example 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 you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. 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 __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph d false06false 4rr_ExpenseNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">These tables describe the fees and expenses that you may pay if you buy and hold shares of the fund.</font> </p>falsefalsefalsenonnum:textBlockItemTypenaThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown. The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph b false07false 4rr_ShareholderFeesCaptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00Shareholder transaction expenses (fees paid directly from your investment):falsefalsefalsexbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 false08false 4rr_OperatingExpensesCaptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment):falsefalsefalsexbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 7 false09false 4rr_ExpenseExampleHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00Examplefalsefalsefalsexbrli:stringItemTypestringHeading for Expense Example.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false010false 4rr_ExpenseExampleNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">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 sell 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&#8217;s operating expenses remain the same.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</font> </p>falsefalsefalsenonnum:textBlockItemTypenaThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 1 false011false 4rr_ExpenseExampleClosingTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">This example does not reflect RMA/Business Services Account BSA program fees.</font> </p> falsefalsefalsenonnum:textBlockItemTypenaThe Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false012false 4rr_StrategyHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00Principal strategiesfalsefalsefalsexbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a false013false 4rr_StrategyNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Principal investments</b></font> </p> <br/><p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">The fund is a money market fund and seeks to maintain a stable price of $1.00 per share. To do this, the fund invests in a diversified portfolio of high quality, municipal money market instruments.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">Money market instruments generally are short-term debt obligations and similar securities. They also may include longer-term bonds that have variable interest rates or other special features that give them the financial characteristics of short-term debt. Under normal circumstances, the fund will invest at least 80% of its net assets in investments, the income from which is exempt from federal income tax. While the fund normally does not do so, it may invest in securities that are subject to the federal alternative minimum tax. If the fund were to do so, under normal circumstances, the fund may invest only up to 20% of its net assets in municipal securities that pay interest that is an item of tax preference for purposes of the alternative minimum tax.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Management process</b></font> </p> <br/><p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">UBS Global Asset Management (Americas) Inc. (&#8220;UBS Global AM&#8221;) acts as the fund&#8217;s investment advisor. As investment advisor, UBS Global AM makes the fund&#8217;s investment decisions. UBS Global AM selects money market instruments for the fund based on its assessment of relative values and changes in market and economic conditions.</font> </p>falsefalsefalsenonnum:textBlockItemTypenaPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a false014false 4rr_RiskHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00Principal risksfalsefalsefalsexbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 false015false 4rr_RiskNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<p style="margin-top: 0px; margin-bottom: 0px;"> <font style="font-family: ARIAL; font-size: small;">All investments carry a certain amount of risk, and the fund cannot guarantee that it will achieve its investment objective. While the fund seeks to maintain the value of your investment at $1.00 per share, you may lose money by investing in the fund. An investment in the fund is not a bank deposit and is neither insured nor guaranteed by the Federal Deposit Insurance <font style="font-family: ARIAL; font-size: small;">Corporation or any other government agency. Money market instruments generally have a low risk of loss, but they are not risk-free. The principal risks presented by an investment in the fund are:</font><br /> </font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Municipal securities risk:</b> Municipal securities are subject to interest rate and credit risks. The ability of a municipal issuer to make payments and the value of municipal securities can be affected by uncertainties in the municipal securities market. Such uncertainties could cause increased volatility in the municipal securities market and could negatively impact the fund&#8217;s net asset value and/or the distributions paid by the fund. Municipalities continue to experience difficulties in the current economic and political environment.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Credit risk:</b> Issuers of money market instruments may fail to make payments when due, or they may become less willing or less able to do so.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Interest rate risk:</b> The value of the fund&#8217;s investments generally will fall when short-term interest rates rise, and its yield will tend to lag behind prevailing rates.</font> </p> <br/><p style="margin-top: 12px; margin-bottom: 0px;"> <font style="font-family: ARIAL; font-size: small;"><strong>Market risk:</strong> The risk that the market value of the fund&#8217;s investments may fluctuate, sometimes rapidly or unpredictably, as the markets fluctuate, which may affect the fund&#8217;s ability to maintain a $1.00 share price. Market risk may affect a single issuer, industry, or sector <font style="font-family: ARIAL; font-size: small;">of the economy, or it may affect the market as a whole. Moreover, changing market, economic and political conditions in one country or geographic region could adversely impact market, economic and political conditions in other countries or regions.</font><br /> </font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Liquidity risk:</b> Although the fund invests in a diversified portfolio of high quality instruments, the fund&#8217;s investments may become less liquid as a result of market developments or adverse investor perception.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Management risk:</b> The risk that the investment strategies, techniques and risk analyses employed by the advisor may not produce the desired results.</font> </p>falsefalsefalsenonnum:textBlockItemTypenaNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 -Subparagraph i -Clause instruction false016false 4rr_RiskMoneyMarketFundrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00While the fund seeks to maintain the value of your investment at $1.00 per share, you may lose money by investing in the fund.falsefalsefalsexbrli:stringItemTypestringSummarize the principal risks of investing in the Fund, including the risks to which the Fund's portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund's net asset value, yield, and total return. Unless the Fund is a Money Market Fund, disclose that loss of money is a risk of investing in the Fund. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund. If the Fund is a Money Market Fund, state that An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it is possible to lose money by investing in the Fund. A Money Market Fund that is advised by or sold through an insured depository institution should combine the disclosure required by Items 2(c)(1)(ii) and (iii) in a single statement.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 -Subparagraph i false017false 4rr_RiskNotInsuredDepositoryInstitutionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00An investment in the fund is not a bank deposit and is neither insured nor guaranteed by the Federal Deposit Insurance Corporation or any other government agency.falsefalsefalsexbrli:stringItemTypestringIf the Fund is advised by or sold through an insured depository institution, state that An investment in the Fund is not a deposit of the bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. A Money Market Fund that is advised by or sold through an insured depository institution should combine the disclosure required by Items 2(c)(1)(ii) and (iii) in a single statement.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 -Subparagraph iii false018false 4rr_BarChartAndPerformanceTableHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00Performancefalsefalsefalsexbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false019false 4rr_PerformanceNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Risk/return bar chart and table</b></font> </p> <br/><p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">The following bar chart and table provide information about the fund&#8217;s performance and thus give some indication of the risks of an investment in the fund.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">The bar chart shows how the fund&#8217;s performance has varied from year to year. The table that follows the bar chart shows the average annual returns over various time periods for the fund&#8217;s shares.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">The fund&#8217;s past performance does not necessarily indicate how the fund will perform in the future.</font> </p>falsefalsefalsenonnum:textBlockItemTypenaRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false020false 4rr_PerformanceInformationIllustratesVariabilityOfReturnsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00The following bar chart and table provide information about the fund's performance and thus give some indication of the risks of an investment in the fund.falsefalsefalsexbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that 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 returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph i false021false 4rr_PerformancePastDoesNotIndicateFuturerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00The fund's past performance does not necessarily indicate how the fund will perform in the future.falsefalsefalsexbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that 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 returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph i false022false 4rr_BarChartHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00Total Returnfalsefalsefalsexbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false023false 4rr_BarChartClosingTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">Total return January&#160;1 to June&#160;30, 2013: 0.00% (Actual total return was 0.005%)</font> </p> <br/><p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">Best quarter during years shown&#8212;3Q 2007: 0.79%</font> </p> <br/><p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">Worst quarters during years shown&#8212;3Q 2009; 1Q, 2Q&#160;&amp; 3Q 2010;&#160;&amp; 1Q 2011: 0.00%</font> </p> <br/><p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">(Actual total returns were 0.0024%)</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">Updated performance information is available by contacting your Financial Advisor or by calling 1-888-793 8637 (Option #1).</font> </p>falsefalsefalsenonnum:textBlockItemTypenaIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false024false 4rr_YearToDateReturnLabelrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00Total return January 1 to June 30, 2013:falsefalsefalsexbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false025false 4rr_BarChartYearToDateReturnDaterr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse002013-06-30falsefalsetruexbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false026false 4rr_BarChartYearToDateReturnrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruefalse0.00000.0000falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false027false 4rr_HighestQuarterlyReturnLabelrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00Best quarterfalsefalsefalsexbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false028false 4rr_BarChartHighestQuarterlyReturnDaterr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse002007-09-30falsefalsetruexbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false029false 4rr_BarChartHighestQuarterlyReturnrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruefalse0.00790.0079falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false030false 4rr_LowestQuarterlyReturnLabelrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00Worst quarterfalsefalsefalsexbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false031false 4rr_BarChartLowestQuarterlyReturnDaterr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse002011-03-31falsefalsetruexbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false032false 4rr_BarChartLowestQuarterlyReturnrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruefalse0.00000.0000falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false033false 4rr_AverageAnnualReturnCaptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsetruefalse00Average annual total returns (for the periods ended December 31, 2012)falsefalsefalsexbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 5 false034false 4rr_MoneyMarketSevenDayYieldPhonerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse001-888-793 8637 (Option #1)falsefalsefalsexbrli:stringItemTypestringA Fund (other than a Money Market Fund) may include the Fund's yield calculated under Item 21(b)(2). Any Fund may include its tax-equivalent yield calculated under Item 21. If a Fund's yield is included, provide a toll-free (or collect) telephone number that investors can use to obtain current yield information.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 2 -Exhibit d false035false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2false USDtruefalse$S000002631Member_C000007234Memberhttp://www.sec.gov/CIK0000703875duration2013-06-30T00:00:002013-06-30T00:00:00falsefalseUBS RMA TAX FREE FUND INCdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000703875_S000002631Memberdei_LegalEntityAxisexplicitMemberfalsefalseUBS RMA TAX FREE FUND INCrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000703875_C000007234Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepurexbrli0usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse036true 3rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse037false 4rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruetrue0.00000.0000falsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 1 false038false 4rr_MaximumDeferredSalesChargeOverOtherrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruetrue0.00000.0000falsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph a -Clause i false039false 4rr_MaximumAccountFeerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsetrue150150USD$falsetruefalserr:NonNegativeMonetaryTypemonetaryInclude the caption "Maximum Account Fees" only if the Fund charges these fees. A Fund may omit other captions if the Fund does not charge the fees or expenses covered by the captions. Disclose account fees that may be charged to a typical investor in the Fund; fees that apply to only a limited number of shareholders based on their particular circumstances need not be disclosed. Include a caption describing the maximum account fee (e.g., "Maximum Account Maintenance Fee" or "Maximum Cash Management Fee"). State the maximum annual account fee as either a fixed dollar amount or a percentage of assets. Include in a parenthetical to the caption the basis on which any percentage is calculated. If an account fee is charged only to accounts that do not meet a certain threshold (e.g., accounts under $5)Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph c false240false 4rr_ShareholderFeeOtherrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsetrue150150USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryOther ExpensesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 10 false241false 4rr_ManagementFeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruetrue0.00380.0038falsefalsefalserr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph a false042false 4rr_DistributionAndService12b1FeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruetrue0.00150.0015falsefalsefalserr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 9 false043false 4rr_OtherExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruetrue0.00060.0006falsefalsefalserr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph c -Clause i false044false 4rr_ExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruetrue0.00590.0059falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph d false045false 4rr_ExpenseExampleYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsetrue6060USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false246false 4rr_ExpenseExampleYear03rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsetrue189189USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false247false 4rr_ExpenseExampleYear05rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsetrue329329USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false248false 4rr_ExpenseExampleYear10rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsetrue738738USD$falsetruefalserr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false249false 4rr_AnnualReturn2003rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruefalse0.00440.0044falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false050false 4rr_AnnualReturn2004rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruefalse0.00630.0063falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false051false 4rr_AnnualReturn2005rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruefalse0.01850.0185falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false052false 4rr_AnnualReturn2006rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruefalse0.02870.0287falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false053false 4rr_AnnualReturn2007rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruefalse0.03090.0309falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false054false 4rr_AnnualReturn2008rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruefalse0.01510.0151falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false055false 4rr_AnnualReturn2009rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruefalse0.00020.0002falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false056false 4rr_AnnualReturn2010rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruefalse0.00010.0001falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false057false 4rr_AnnualReturn2011rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruefalse0.00010.0001falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false058false 4rr_AnnualReturn2012rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruefalse0.00010.0001falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false059false 4rr_AverageAnnualReturnYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truetruetrue0.00010.0001falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false060false 4rr_AverageAnnualReturnYear05rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truetruetrue0.00310.0031falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false061false 4rr_AverageAnnualReturnYear10rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truetruetrue0.01040.0104falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false0falseRisk/Return Detail Data - UBS RMA TAX FREE FUND INC (UBS RMA TAX FREE FUND INC, USD $)NoRoundingUnKnownUnKnownUnKnowntruefalsefalseSheethttp://ubs.com/20130829/role/DisclosureRiskReturnDetailDataElementsUBSRMATAXFREEFUNDINC161 XML 11 Show.js IDEA: XBRL DOCUMENT /** * Rivet Software Inc. * * @copyright Copyright (c) 2006-2011 Rivet Software, Inc. 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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading UBS RMA TAX FREE FUND INC
Objective [Heading] rr_ObjectiveHeading Investment objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Maximum current income exempt from federal income tax consistent with liquidity and conservation of capital.

Expense [Heading] rr_ExpenseHeading Fees and expenses
Expense Narrative [Text Block] 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 [Text] rr_ShareholderFeesCaption Shareholder transaction expenses (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):
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 sell 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:

Expense Example Closing [Text Block] rr_ExpenseExampleClosingTextBlock

This example does not reflect RMA/Business Services Account BSA program fees.

Strategy [Heading] rr_StrategyHeading Principal strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Principal investments


The fund is a money market fund and seeks to maintain a stable price of $1.00 per share. To do this, the fund invests in a diversified portfolio of high quality, municipal money market instruments.


Money market instruments generally are short-term debt obligations and similar securities. They also may include longer-term bonds that have variable interest rates or other special features that give them the financial characteristics of short-term debt. Under normal circumstances, the fund will invest at least 80% of its net assets in investments, the income from which is exempt from federal income tax. While the fund normally does not do so, it may invest in securities that are subject to the federal alternative minimum tax. If the fund were to do so, under normal circumstances, the fund may invest only up to 20% of its net assets in municipal securities that pay interest that is an item of tax preference for purposes of the alternative minimum tax.


Management process


UBS Global Asset Management (Americas) Inc. (“UBS Global AM”) acts as the fund’s investment advisor. As investment advisor, UBS Global AM makes the fund’s investment decisions. UBS Global AM selects money market instruments for the fund based on its assessment of relative values and changes in market and economic conditions.

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. While the fund seeks to maintain the value of your investment at $1.00 per share, you may lose money by investing in the fund. An investment in the fund is not a bank deposit and is neither insured nor guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Money market instruments generally have a low risk of loss, but they are not risk-free. The principal risks presented by an investment in the fund are:


Municipal securities risk: Municipal securities are subject to interest rate and credit risks. The ability of a municipal issuer to make payments and the value of municipal securities can be affected by uncertainties in the municipal securities market. Such uncertainties could cause increased volatility in the municipal securities market and could negatively impact the fund’s net asset value and/or the distributions paid by the fund. Municipalities continue to experience difficulties in the current economic and political environment.


Credit risk: Issuers of money market instruments may fail to make payments when due, or they may become less willing or less able to do so.


Interest rate risk: The value of the fund’s investments generally will fall when short-term interest rates rise, and its yield will tend to lag behind prevailing rates.


Market risk: The risk that the market value of the fund’s investments may fluctuate, sometimes rapidly or unpredictably, as the markets fluctuate, which may affect the fund’s ability to maintain a $1.00 share price. 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 and political conditions in one country or geographic region could adversely impact market, economic and political conditions in other countries or regions.


Liquidity risk: Although the fund invests in a diversified portfolio of high quality instruments, the fund’s investments may become less liquid as a result of market developments or adverse investor perception.


Management risk: The risk that the investment strategies, techniques and risk analyses employed by the advisor may not produce the desired results.

Risk Money Market Fund [Text] rr_RiskMoneyMarketFund While the fund seeks to maintain the value of your investment at $1.00 per share, 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 bank deposit and is neither insured nor 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 following bar chart and table provide information about the fund’s performance and thus give some indication of the risks of an investment in the fund.


The bar chart shows how the fund’s performance has varied from year to year. The table that follows the bar chart shows the average annual returns over various time periods for the fund’s shares.


The fund’s past performance does not necessarily indicate how the fund will perform in the future.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following bar chart and table provide information about the fund's performance and thus give some indication of the risks of an investment in the fund.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund's past performance does not necessarily indicate how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Total Return
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Total return January 1 to June 30, 2013: 0.00% (Actual total return was 0.005%)


Best quarter during years shown—3Q 2007: 0.79%


Worst quarters during years shown—3Q 2009; 1Q, 2Q & 3Q 2010; & 1Q 2011: 0.00%


(Actual total returns were 0.0024%)


Updated performance information is available by contacting your Financial Advisor or by calling 1-888-793 8637 (Option #1).

Year to Date Return, Label rr_YearToDateReturnLabel Total return January 1 to June 30, 2013:
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Jun. 30, 2013
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 0.00%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Sep. 30, 2007
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.79%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn 0.00%
Caption rr_AverageAnnualReturnCaption Average annual total returns (for the periods ended December 31, 2012)
Money Market Seven Day Yield Phone rr_MoneyMarketSevenDayYieldPhone 1-888-793 8637 (Option #1)
UBS RMA TAX FREE FUND INC
 
Risk/Return: rr_RiskReturnAbstract  
Maximum front-end sales charge (load) imposed on purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a % of offering price) rr_MaximumDeferredSalesChargeOverOther none
Maximum account fee UBS Financial Services Inc. RMA Program rr_MaximumAccountFee $ 150
Maximum account fee UBS Financial Services Inc. Business Services Account BSA Program rr_ShareholderFeeOther 150
Management fees rr_ManagementFeesOverAssets 0.38%
Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.15%
Other expenses rr_OtherExpensesOverAssets 0.06%
Total annual fund operating expenses rr_ExpensesOverAssets 0.59%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 60
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 189
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 329
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 738
Annual Return 2003 rr_AnnualReturn2003 0.44%
Annual Return 2004 rr_AnnualReturn2004 0.63%
Annual Return 2005 rr_AnnualReturn2005 1.85%
Annual Return 2006 rr_AnnualReturn2006 2.87%
Annual Return 2007 rr_AnnualReturn2007 3.09%
Annual Return 2008 rr_AnnualReturn2008 1.51%
Annual Return 2009 rr_AnnualReturn2009 0.02%
Annual Return 2010 rr_AnnualReturn2010 0.01%
Annual Return 2011 rr_AnnualReturn2011 0.01%
Annual Return 2012 rr_AnnualReturn2012 0.01%
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 0.01%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 0.31%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 1.04%
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Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 9 false03falseRowprimaryElement*5false 4rr_OtherExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabelrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph c -Clause i false0 0rr_OtherExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruetrue0.00060.0006falsefalsefalserr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph c -Clause i false04falseRowprimaryElement*6false 4rr_ExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabelrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph d false0 0rr_ExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruetrue0.00590.0059falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph d false0falseAnnual Fund Operating Expenses UnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet14031408ColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000703875_S000002631MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No definition available.false011false 4rr_ExpenseExampleHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Examplefalsefalsefalsexbrli:stringItemTypestringHeading for Expense Example.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false012false 4rr_ExpenseExampleNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">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 sell 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&#8217;s operating expenses remain the same.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</font> </p>falsefalsefalsenonnum:textBlockItemTypenaThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 1 false013false 4rr_ExpenseExampleWithRedemptionTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00~ http://ubs.com/20130829/role/ScheduleExpenseExampleTransposed20003 column dei_LegalEntityAxis compact ck0000703875_S000002631Member row primary compact * ~falsefalse~ http://ubs.com/20130829/role/ScheduleExpenseExampleTransposed20003 column dei_LegalEntityAxis compact ck0000703875_S000002631Member row primary compact * ~truehttp://ubs.com/20130829/role/ScheduleExpenseExampleTransposed20003020003 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false 4rr_ExpenseExampleYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false2 USDfalsefalse$2falseColumnprimaryElement*4false 4rr_ExpenseExampleYear03rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false2 USDfalsefalse$3falseColumnprimaryElement*5false 4rr_ExpenseExampleYear05rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false2 USDfalsefalse$4falseColumnprimaryElement*6false 4rr_ExpenseExampleYear10rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false2 USDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000703875_S000002631MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2013-06-30T00:00:002013-06-30T00:00:00falsefalseUBS RMA TAX FREE FUND INCdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000703875_S000002631Memberdei_LegalEntityAxisexplicitMemberfalsefalseUBS RMA TAX FREE FUND INCrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000703875_C000007234Memberrr_ProspectusShareClassAxisexplicitMemberUBS RMA TAX FREE FUND INCUBS RMA TAX FREE FUND INCusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170 0truefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue6060falsefalsefalse2truefalsetrue189189falsefalsefalse3truefalsetrue329329falsefalsefalse4truefalsetrue738738falsefalsefalsenanafalse0falseExpense Example (USD $)UnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet413041020ColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000703875_S000002631MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No definition available.false014false 4rr_ExpenseExampleClosingTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">This example does not reflect RMA/Business Services Account BSA program fees.</font> </p> falsefalsefalsenonnum:textBlockItemTypenaThe Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false015false 4rr_StrategyHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal strategiesfalsefalsefalsexbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a false016false 4rr_StrategyNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Principal investments</b></font> </p> <br/><p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">The fund is a money market fund and seeks to maintain a stable price of $1.00 per share. To do this, the fund invests in a diversified portfolio of high quality, municipal money market instruments.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">Money market instruments generally are short-term debt obligations and similar securities. They also may include longer-term bonds that have variable interest rates or other special features that give them the financial characteristics of short-term debt. Under normal circumstances, the fund will invest at least 80% of its net assets in investments, the income from which is exempt from federal income tax. While the fund normally does not do so, it may invest in securities that are subject to the federal alternative minimum tax. If the fund were to do so, under normal circumstances, the fund may invest only up to 20% of its net assets in municipal securities that pay interest that is an item of tax preference for purposes of the alternative minimum tax.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Management process</b></font> </p> <br/><p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">UBS Global Asset Management (Americas) Inc. (&#8220;UBS Global AM&#8221;) acts as the fund&#8217;s investment advisor. As investment advisor, UBS Global AM makes the fund&#8217;s investment decisions. UBS Global AM selects money market instruments for the fund based on its assessment of relative values and changes in market and economic conditions.</font> </p>falsefalsefalsenonnum:textBlockItemTypenaPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a false017false 4rr_RiskHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal risksfalsefalsefalsexbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 false018false 4rr_RiskNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="margin-top: 0px; margin-bottom: 0px;"> <font style="font-family: ARIAL; font-size: small;">All investments carry a certain amount of risk, and the fund cannot guarantee that it will achieve its investment objective. While the fund seeks to maintain the value of your investment at $1.00 per share, you may lose money by investing in the fund. An investment in the fund is not a bank deposit and is neither insured nor guaranteed by the Federal Deposit Insurance <font style="font-family: ARIAL; font-size: small;">Corporation or any other government agency. Money market instruments generally have a low risk of loss, but they are not risk-free. The principal risks presented by an investment in the fund are:</font><br /> </font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Municipal securities risk:</b> Municipal securities are subject to interest rate and credit risks. The ability of a municipal issuer to make payments and the value of municipal securities can be affected by uncertainties in the municipal securities market. Such uncertainties could cause increased volatility in the municipal securities market and could negatively impact the fund&#8217;s net asset value and/or the distributions paid by the fund. Municipalities continue to experience difficulties in the current economic and political environment.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Credit risk:</b> Issuers of money market instruments may fail to make payments when due, or they may become less willing or less able to do so.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Interest rate risk:</b> The value of the fund&#8217;s investments generally will fall when short-term interest rates rise, and its yield will tend to lag behind prevailing rates.</font> </p> <br/><p style="margin-top: 12px; margin-bottom: 0px;"> <font style="font-family: ARIAL; font-size: small;"><strong>Market risk:</strong> The risk that the market value of the fund&#8217;s investments may fluctuate, sometimes rapidly or unpredictably, as the markets fluctuate, which may affect the fund&#8217;s ability to maintain a $1.00 share price. Market risk may affect a single issuer, industry, or sector <font style="font-family: ARIAL; font-size: small;">of the economy, or it may affect the market as a whole. Moreover, changing market, economic and political conditions in one country or geographic region could adversely impact market, economic and political conditions in other countries or regions.</font><br /> </font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Liquidity risk:</b> Although the fund invests in a diversified portfolio of high quality instruments, the fund&#8217;s investments may become less liquid as a result of market developments or adverse investor perception.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Management risk:</b> The risk that the investment strategies, techniques and risk analyses employed by the advisor may not produce the desired results.</font> </p>falsefalsefalsenonnum:textBlockItemTypenaNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 -Subparagraph i -Clause instruction false019false 4rr_BarChartAndPerformanceTableHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performancefalsefalsefalsexbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false020false 4rr_PerformanceNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2"><b>Risk/return bar chart and table</b></font> </p> <br/><p style="margin-top:0px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">The following bar chart and table provide information about the fund&#8217;s performance and thus give some indication of the risks of an investment in the fund.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">The bar chart shows how the fund&#8217;s performance has varied from year to year. The table that follows the bar chart shows the average annual returns over various time periods for the fund&#8217;s shares.</font> </p> <br/><p style="margin-top:12px;margin-bottom:0px"> <font style="font-family:ARIAL" size="2">The fund&#8217;s past performance does not necessarily indicate how the fund will perform in the future.</font> </p>falsefalsefalsenonnum:textBlockItemTypenaRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false021false 4rr_BarChartHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Total Returnfalsefalsefalsexbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false022false 4rr_BarChartTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00~ http://ubs.com/20130829/role/ScheduleAnnualTotalReturnsBarChart20004 column dei_LegalEntityAxis compact ck0000703875_S000002631Member column rr_ProspectusShareClassAxis compact ck0000703875_C000007234Member row primary compact * ~falsefalseBarChart1.jpg~ http://ubs.com/20130829/role/ScheduleAnnualTotalReturnsBarChart20004 column dei_LegalEntityAxis compact ck0000703875_S000002631Member column rr_ProspectusShareClassAxis compact ck0000703875_C000007234Member row primary compact * ~falsehttp://ubs.com/20130829/role/ScheduleAnnualTotalReturnsBarChart20004020004 - Schedule - Annual Total Returns [Bar Chart]truefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000703875_S000002631MemberColumnrr_ProspectusShareClassAxisAxisck0000703875_C000007234MemberColumnunitUnit*duration2013-06-30T00:00:002013-06-30T00:00:00falsefalseUBS RMA TAX FREE FUND INCdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000703875_S000002631Memberdei_LegalEntityAxisexplicitMemberfalsefalseUBS RMA TAX FREE FUND INCrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000703875_C000007234Memberrr_ProspectusShareClassAxisexplicitMemberUBS RMA TAX FREE FUND INCUBS RMA TAX FREE FUND INCpureStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 USDfalsefalseduration2013-06-30T00:00:002013-06-30T00:00:00$1falseRowprimaryElement*3false3false 4rr_AnnualReturn2003rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.00440.0044falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0 4rr_AnnualReturn2003rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0 0rr_AnnualReturn2003rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.00440.0044falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false02falseRowprimaryElement*4false4false 4rr_AnnualReturn2004rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.00630.0063falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0 4rr_AnnualReturn2004rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0 0rr_AnnualReturn2004rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.00630.0063falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false03falseRowprimaryElement*5false5false 4rr_AnnualReturn2005rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.01850.0185falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0 4rr_AnnualReturn2005rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0 0rr_AnnualReturn2005rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.01850.0185falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false04falseRowprimaryElement*6false6false 4rr_AnnualReturn2006rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.02870.0287falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0 4rr_AnnualReturn2006rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0 0rr_AnnualReturn2006rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.02870.0287falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false05falseRowprimaryElement*7false7false 4rr_AnnualReturn2007rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.03090.0309falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0 4rr_AnnualReturn2007rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0 0rr_AnnualReturn2007rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.03090.0309falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false06falseRowprimaryElement*8false8false 4rr_AnnualReturn2008rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.01510.0151falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0 4rr_AnnualReturn2008rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0 0rr_AnnualReturn2008rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.01510.0151falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false07falseRowprimaryElement*9false9false 4rr_AnnualReturn2009rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.00020.0002falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0 4rr_AnnualReturn2009rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0 0rr_AnnualReturn2009rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.00020.0002falsefalsefalsexbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false08falseRowprimaryElement*