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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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective [Heading]5false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund's investment objective is total return, comprised of current income and capital appreciation.falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment 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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective, Primary [Text Block]6false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and Expenses of the FundfalsefalsefalsefalsefalseOtherxbrli: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense [Heading]7false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.</p><p>You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in the Invesco Funds. More information about these and other discounts is available from your financial professional and in the section &#8220;Shareholder Account Information&#8212;Initial Sales Charges (Class A Shares Only)&#8221; on page A-3 of the prospectus and the section &#8220;Purchase, Redemption and Pricing of Shares&#8212;Purchase and Redemption of Shares&#8221; on page L-1 of the statement of additional information (SAI).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis 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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense Narrative [Text Block]8false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Shareholder Fees (fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees Caption [Text]9false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div>&lt;div&gt; &amp;lt;div style="display:none;" &amp;gt;~ http://invesco.com/role/ShareholderFeesInvescoLiborAlphaFundClassCRAndY column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_DocumentInformationDocumentAxis compact aimif826644_S000008409_Member * row dei_LegalEntityAxis compact aimif826644_Prospectus_Eleven_Member * ~&amp;lt;/div&amp;gt; &lt;/div&gt;</div>falsefalse<div>&lt;div&gt; &amp;lt;div style="display:none;" &amp;gt;~ http://invesco.com/role/ShareholderFeesInvescoLiborAlphaFundClassCRAndY column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_DocumentInformationDocumentAxis compact aimif826644_S000008409_Member * row dei_LegalEntityAxis compact aimif826644_Prospectus_Eleven_Member * ~&amp;lt;/div&amp;gt; &lt;/div&gt;</div>falsehttp://invesco.com/role/ShareholderFeesInvescoLiborAlphaFundClassCRAndYfalsefalse02001010 - 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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. 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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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution and/or Service (12b-1) Fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00250.0025falsefalsefalsetruefalse2truetruetrue0.010.01falsefalsefalsetruefalse3truetruetrue0.0050.005falsefalsefalsetruefalse4truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalseDistribution and/or Service (12b-1) Fees4falseRowprimaryElement*7false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.00660.0066falsefalsefalsetruefalse2truetruetrue0.00660.0066falsefalsefalsetruefalse3truetruetrue0.00660.0066falsefalsefalsetruefalse4truetruetrue0.00660.0066falsefalsefalsetruefalseOtherrr: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00660.0066falsefalsefalsetruefalse2truetruetrue0.00660.0066falsefalsefalsetruefalse3truetruetrue0.00660.0066falsefalsefalsetruefalse4truetruetrue0.00660.0066falsefalsefalsetruefalseOthernanafalsefalseOther Expenses5falseRowprimaryElement*8false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.01360.0136falsefalsefalsetruefalse2truetruetrue0.02110.0211falsefalsefalsetruefalse3truetruetrue0.01610.0161falsefalsefalsetruefalse4truetruetrue0.01110.0111falsefalsefalsetruefalseOtherrr: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal Annual Fund Operating Expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01360.0136falsefalsefalsetruefalse2truetruetrue0.02110.0211falsefalsefalsetruefalse3truetruetrue0.01610.0161falsefalsefalsetruefalse4truetruetrue0.01110.0111falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses6falseRowprimaryElement*9false0rr_FeeWaiverOrReimbursementOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00510.0051[1]falsefalsefalsetruefalse2truetruetrue0.01010.0101[1]falsefalsefalsetruefalse3truetruetrue0.00510.0051[1]falsefalsefalsetruefalse4truetruetrue0.00510.0051[1]falsefalsefalsetruefalseOtherrr:NonPositivePure4TypepureTotal Annual Fund Operating Expenses. If there were expense reimbursement or fee waiver arrangements that reduced any Fund operating expenses and will continue to reduce them for no less than one year from the effective date of the Fund's registration statement, a Fund may add two captions to the table one caption showing the amount of the expense reimbursement or fee waiver, and a second caption showing the Fund's net expenses after subtracting the fee reimbursement or expense waiver from the total fund operating expenses. The Fund should place these additional captions directly below the "Total Annual Fund Operating Expenses" caption of the table and should use appropriate descriptive captions, such as "Fee Waiver [and/or Expense Reimbursement]" and "Total Annual Fund Operating Expenses After Fee Waiver [and/or Expense Reimbursement]," respectively. If the Fund provides this disclosure, also disclose the period for which the expense reimbursement or fee waiver arrangement is expected to continue, and briefly describe who can terminate the arrangement and under what circumstances.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseFee Waiver and/or Expense Reimbursement0rr_FeeWaiverOrReimbursementOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[2]1truetruetrue0.00510.0051falsefalsefalsetruefalse2truetruetrue0.01010.0101falsefalsefalsetruefalse3truetruetrue0.00510.0051falsefalsefalsetruefalse4truetruetrue0.00510.0051falsefalsefalsetruefalseOthernanafalsefalseFee Waiver and/or Expense Reimbursement7falseRowprimaryElement*10false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.00850.0085falsefalsefalsetruefalse2truetruetrue0.0110.011falsefalsefalsetruefalse3truetruetrue0.0110.011falsefalsefalsetruefalse4truetruetrue0.0060.006falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement0rr_NetExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00850.0085falsefalsefalsetruefalse2truetruetrue0.0110.011falsefalsefalsetruefalse3truetruetrue0.0110.011falsefalsefalsetruefalse4truetruetrue0.0060.006falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement1The Distributor has contractually agreed, through at least February 28, 2012, to waive 0.50% of Rule 12b-1 distribution plan payments on Class C shares. Unless the Board of Trustees and Invesco Advisers, Inc. mutually agree to amend or continue the fee waiver agreement, it will terminate on February 28, 2012.2Invesco Advisers, Inc. (Invesco or the Adviser) has contractually agreed, through at least February 28, 2012, to waive advisory fees and/or reimburse expenses of all shares to the extent necessary to limit Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement (excluding certain items discussed in the SAI) of Class A, Class C, Class R and Class Y shares to 0.85%, 1.10% (after Rule 12b-1 fee waiver), 1.10% and 0.60%, respectively, of average daily net assets. Unless the Board of Trustees and Invesco mutually agree to amend or continue the fee waiver agreement, it will terminate on February 28, 2012.47Annual Fund Operating Expenses - Invesco Libor Alpha Fund (Class A C R & Y) Invesco LIBOR Alpha Fund Invesco LIBOR Alpha Fund - Class A, C, R and YUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxis*Columndei_LegalEntityAxisAxis*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]12false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Example.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example [Heading]13false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.</p><p>The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#8217;s operating expenses remain the same.</p><p>Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe 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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example Narrative [Text Block]14false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div>&lt;div&gt; &amp;lt;div style="display:none;"&amp;gt;~ http://invesco.com/role/ExpenseExampleInvescoLiborAlphaFundClassCRAndY column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_DocumentInformationDocumentAxis compact aimif826644_S000008409_Member * row dei_LegalEntityAxis compact aimif826644_Prospectus_Eleven_Member * ~&amp;lt;/div&amp;gt; &lt;/div&gt;</div>falsefalse<div>&lt;div&gt; &amp;lt;div style="display:none;"&amp;gt;~ http://invesco.com/role/ExpenseExampleInvescoLiborAlphaFundClassCRAndY column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_DocumentInformationDocumentAxis compact aimif826644_S000008409_Member * row dei_LegalEntityAxis compact aimif826644_Prospectus_Eleven_Member * ~&amp;lt;/div&amp;gt; &lt;/div&gt;</div>truehttp://invesco.com/role/ExpenseExampleInvescoLiborAlphaFundClassCRAndYfalsefalse02003010 - Schedule - Expense Example - Invesco LIBOR Alpha Fund (Class A C R & Y) {Transposed}truefalsefalse1falseColumnprimaryElement*4false0rr_ExpenseExampleByYearColumnNamerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Class Afalsefalsefalsetruefalse2falsefalsefalse00Class Cfalsefalsefalsetruefalse3falsefalsefalse00Class Rfalsefalsefalsetruefalse4falsefalsefalse00Class YfalsefalsefalsetruefalseOtherus-types:textBlockItemTypestringThe 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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, By Year, Column [Text]falseUSDfalsefalse$2falseColumnprimaryElement*5false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue335335falsefalsefalsetruefalse2truefalsetrue112112falsefalsefalsetruefalse3truefalsetrue112112falsefalsefalsetruefalse4truefalsetrue6161falsefalsefalsetruefalseMonetaryrr: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalse1 YearfalseUSDfalsefalse$3falseColumnprimaryElement*6false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue621621falsefalsefalsetruefalse2truefalsetrue563563falsefalsefalsetruefalse3truefalsetrue458458falsefalsefalsetruefalse4truefalsetrue302302falsefalsefalsetruefalseMonetaryrr: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse3 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*7false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue929929falsefalsefalsetruefalse2truefalsetrue10411041falsefalsefalsetruefalse3truefalsetrue828828falsefalsefalsetruefalse4truefalsetrue562562falsefalsefalsetruefalseMonetaryrr: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse5 YearsfalseUSDfalsefalse$5falseColumnprimaryElement*8false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue18011801falsefalsefalsetruefalse2truefalsetrue23612361falsefalsefalsetruefalse3truefalsetrue18681868falsefalsefalsetruefalse4truefalsetrue13061306falsefalsefalsetruefalseMonetaryrr: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse10 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco LIBOR Alpha Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000008409Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseInvesco LIBOR Alpha Fund - Class A, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusElevenMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass A, Invesco LIBOR Alpha Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_C000023073Memberrr_ProspectusShareClassAxisexplicitMemberInvesco LIBOR Alpha FundInvesco LIBOR Alpha Fund - Class A, C, R and YClass A, Invesco LIBOR Alpha FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Class AClass Afalsefalsefalsetruefalse2truefalsetrue335335falsefalsefalsetruefalse3truefalsetrue621621falsefalsefalsetruefalse4truefalsetrue929929falsefalsefalsetruefalse5truefalsetrue18011801falsefalsefalsetruefalseOthernanafalsefalseClass A, Invesco LIBOR Alpha Fund2falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco LIBOR Alpha Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000008409Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseInvesco LIBOR Alpha Fund - Class A, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusElevenMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass C, Invesco LIBOR Alpha Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_C000023074Memberrr_ProspectusShareClassAxisexplicitMemberInvesco LIBOR Alpha FundInvesco LIBOR Alpha Fund - Class A, C, R and YClass C, Invesco LIBOR Alpha FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Class CClass Cfalsefalsefalsetruefalse2truefalsetrue112112falsefalsefalsetruefalse3truefalsetrue563563falsefalsefalsetruefalse4truefalsetrue10411041falsefalsefalsetruefalse5truefalsetrue23612361falsefalsefalsetruefalseOthernanafalsefalseClass C, Invesco LIBOR Alpha Fund3falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco LIBOR Alpha Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000008409Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseInvesco LIBOR Alpha Fund - Class A, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusElevenMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass R, Invesco LIBOR Alpha Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_C000023075Memberrr_ProspectusShareClassAxisexplicitMemberInvesco LIBOR Alpha FundInvesco LIBOR Alpha Fund - Class A, C, R and YClass R, Invesco LIBOR Alpha FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Class RClass Rfalsefalsefalsetruefalse2truefalsetrue112112falsefalsefalsetruefalse3truefalsetrue458458falsefalsefalsetruefalse4truefalsetrue828828falsefalsefalsetruefalse5truefalsetrue18681868falsefalsefalsetruefalseOthernanafalsefalseClass R, Invesco LIBOR Alpha Fund4falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco LIBOR Alpha Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000008409Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseInvesco LIBOR Alpha Fund - 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Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse10 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco LIBOR Alpha Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000008409Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseInvesco LIBOR Alpha Fund - Class A, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusElevenMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass A, Invesco LIBOR Alpha Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_C000023073Memberrr_ProspectusShareClassAxisexplicitMemberInvesco LIBOR Alpha FundInvesco LIBOR Alpha Fund - 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Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover [Heading]18false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the example, affect the Fund&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 95% of the average value of its portfolio.falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover [Text Block]19false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment Strategies of the FundfalsefalsefalsefalsefalseOtherxbrli: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy [Heading]20false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund seeks to meet its objective by exceeding the total return of the three-month U.S. Dollar London Interbank Offered Rate (LIBOR) (the Fund&#8217;s benchmark index). The Fund invests primarily in domestic and foreign debt securities and in foreign currency investments. The Fund may also invest in structured securitized debt securities, such as asset-backed securities and both residential and commercial mortgage-backed securities.</p><p>The Fund may invest in derivative instruments such as swaps (including interest rate, total return and credit default swaps), options, and futures contracts. The Fund may also utilize other strategies such as dollar rolls and reverse repurchase agreements. Derivative instruments and dollar rolls and reverse repurchase agreements may have the effect of leveraging the Fund&#8217;s portfolio. Foreign currency investments may include spot contracts, forward currency contracts, currency swaps, currency options, currency futures and options on currency futures.</p><p>Under normal circumstances, the Fund&#8217;s effective duration, as estimated by the Fund&#8217;s portfolio managers, will be one-quarter of a year, but the Fund&#8217;s exposure to changes in U.S. interest rates may differ from the Fund&#8217;s benchmark by up to one year. The Fund will generally maintain a weighted average effective maturity of less than three years. Effective duration is a measure, as estimated by the Fund&#8217;s portfolio managers, of the Fund&#8217;s price sensitivity to changes in interest rates. Weighted average effective maturity is a measure, as estimated by the Fund&#8217;s portfolio managers, of the length of time the average security in the Fund will mature or be redeemed by the issuer.</p><p>At least 65% of the Fund&#8217;s total assets will consist of domestic investment grade securities. A fixed income security is considered investment grade if it is either rated at least Baa3 by Moody&#8217;s Investors Service, Inc., BBB- by Standard &#038; Poor&#8217;s or BBB- by Fitch, or the Fund&#8217;s portfolio managers believe it to be of comparable credit quality. The Fund may invest up to 35% of its total assets in foreign securities. The Fund may invest up to 25% of its total assets in non-investment grade securities (junk bonds), including non-investment grade emerging market securities.</p><p>The Fund utilizes active duration and yield curve positioning for risk management and for generating alpha versus its benchmark. Duration is a measure of volatility expressed in years and represents the anticipated percent change in a bond&#8217;s price at a single point in time for a 1% change in yield. As duration increases, volatility increases as applicable interest rates change.</p><p>The portfolio managers utilize an appropriate benchmark index in structuring the portfolio. The portfolio managers then decide on risk factors to use in managing the Fund relative to that benchmark. In doing so, the portfolio managers consider recommendations from a team of specialists in positioning the Fund to generate alpha (specific factors affecting the return on investments in excess of the benchmark). The portfolio managers generally rely upon a different team of specialists for trade execution and for assistance in determining the most efficient way (in terms of cost-efficiency and selection) to implement those recommendations. Although a variety of specialists provide input in the management of the Fund, the portfolio managers retain responsibility for ensuring the Fund is positioned appropriately in terms of risk exposures and position sizes. The portfolio managers rely on the specialists for adjusting the Fund&#8217;s risk exposures and security selection. Decisions to purchase or sell securities are determined by the relative value considerations of the investment professionals that factor in economic and credit-related fundamentals, market supply and demand, market dislocations and situation-specific opportunities. The purchase or sale of securities may be related to a decision to alter the Fund&#8217;s macro risk exposure (e.g. duration, yield, curve positioning, sector exposure), a need to limit or reduce the Fund&#8217;s exposure to a particular security or issuer, degradation of an issuer&#8217;s credit quality, or general liquidity needs of the Fund.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal 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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy Narrative [Text Block]21false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<b>Principal Risks of Investing in the Fund</b>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk [Heading]22false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:</p><p><i>Credit Risk.</i> The issuer of instruments in which the Fund invests may be unable to meet interest and/or principal payments, thereby causing its instruments to decrease in value and lowering the issuer&#8217;s credit rating.</p><p><i>Currency/Exchange Rate Risk.</i> The dollar value of the Fund&#8217;s foreign investments will be affected by changes in the exchange rates between the dollar and the currencies in which those investments are traded.</p><p><i>Derivatives Risk.</i> Derivatives may be more difficult to purchase, sell or value than other investments and may be subject to market, interest rate, credit, leverage, counterparty and management risks. A fund investing in a derivative could lose more than the cash amount invested or incur higher taxes. Over-the-counter derivatives are also subject to counterparty risk, which is the risk that the other party to the contract will not fulfill its contractual obligation to complete the transaction with the Fund.</p><p><i>Developing Markets Securities Risk.</i> Securities issued by foreign companies and governments located in developing countries may be affected more negatively by inflation, devaluation of their currencies, higher transaction costs, delays in settlement, adverse political developments, the introduction of capital controls, withholding taxes, nationalization of private assets, expropriation, social unrest, war or lack of timely information than those in developed countries.</p><p><i>Foreign Securities Risk.</i> The Fund&#8217;s foreign investments may be affected by changes in a foreign country&#8217;s exchange rates; political and social instability; changes in economic or taxation policies; difficulties when enforcing obligations; decreased liquidity; and increased volatility. Foreign companies may be subject to less regulation resulting in less publicly available information about the companies.</p><p><i>High Yield Bond (Junk Bond) Risk.</i> Junk bonds involve a greater risk of default or price changes due to changes in the credit quality of the issuer. The values of junk bonds fluctuate more than those of high-quality bonds in response to company, political, regulatory or economic developments. Values of junk bonds can decline significantly over short periods of time.</p><p><i>Interest Rate Risk.</i> Interest rate risk refers to the risk that bond prices generally fall as interest rates rise; conversely, bond prices generally rise as interest rates fall. Specific bonds differ in their sensitivity to changes in interest rates depending on their individual characteristics, including duration.</p><p><i>Leverage Risk.</i> Leverage exists when the Fund purchases or sells an instrument or enters into a transaction without investing cash in an amount equal to the full economic exposure of the instrument or transaction and the Fund could lose more than it invested. Leverage created from borrowing or certain types of transactions or instruments, including derivatives, may impair the Fund&#8217;s liquidity, cause it to liquidate positions at an unfavorable time, increase volatility or otherwise not achieve its intended objective.</p><p><i>Management Risk.</i> The investment techniques and risk analysis used by the Fund&#8217;s portfolio managers may not produce the desired results.</p><p><i>Market Risk.</i> The prices of and the income generated by the Fund&#8217;s securities may decline in response to, among other things, investor sentiment; general economic and market conditions; regional or global instability; and currency and interest rate fluctuations.</p><p><i>Mortgage- and Asset-Backed Securities Risk.</i> The Fund may invest in mortgage- and asset-backed securities that are subject to prepayment or call risk, which is the risk that the borrower&#8217;s payments may be received earlier or later than expected due to changes in prepayment rates on underlying loans. Faster prepayments often happen when interest rates are falling. As a result, the Fund may reinvest these early payments at lower interest rates, thereby reducing the Fund&#8217;s income. Conversely, when interest rates rise, prepayments may happen more slowly, causing the security to lengthen in duration. Longer duration securities tend to be more volatile. Securities may be prepaid at a price less than the original purchase value.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative 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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk Narrative [Text Block]23false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performance InformationfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table [Heading]24false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The performance table compares the Fund&#8217;s performance to that of a broad-based securities market benchmark, a style specific benchmark and a peer group benchmark comprised of funds with investment objectives and strategies similar to the Fund. The Fund&#8217;s past performance (before and after taxes) is not necessarily an indication of its future performance. 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Class A, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusElevenMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass Y, Invesco LIBOR Alpha Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_C000071229Memberrr_ProspectusShareClassAxisexplicitMemberInvesco LIBOR Alpha FundBefore TaxesInvesco LIBOR Alpha Fund - Class A, C, R and YClass Y, Invesco LIBOR Alpha FundStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsetruefalse00Class&#160;Y:Class&#160;Y:[1]falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsetruefalse002008-10-032008-10-03falsefalsetruetruefalse6truetruetrue0.03020.0302falsefalsefalsetruefalse7truetruetrue0.02610.0261falsefalsefalsetruefalseOthernanafalsefalseBefore Taxes Invesco LIBOR Alpha Fund - Class A, C, R and Y Class Y, Invesco LIBOR Alpha Fund6falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco LIBOR Alpha Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000008409Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseAfter Taxes on Distributionsrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsMemberrr_PerformanceMeasureAxisexplicitMemberfalsefalseInvesco LIBOR Alpha Fund - Class A, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusElevenMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass A, Invesco LIBOR Alpha Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_C000023073Memberrr_ProspectusShareClassAxisexplicitMemberInvesco LIBOR Alpha FundAfter Taxes on DistributionsInvesco LIBOR Alpha Fund - Class A, C, R and YClass A, Invesco LIBOR Alpha FundStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsetruefalse00Class&#160;A:Class&#160;A:falsefalsefalsetruefalse3falsetruefalse00After Taxes on DistributionsAfter Taxes on Distributionsfalsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsetruefalse002006-03-312006-03-31falsefalsetruetruefalse6truetruetrue-0.0077-0.0077falsefalsefalsetruefalse7truetruetrue0.00200.0020falsefalsefalsetruefalseOthernanafalsefalseAfter Taxes on Distributions Invesco LIBOR Alpha Fund - Class A, C, R and Y Class A, Invesco LIBOR Alpha Fund7falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco LIBOR Alpha Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000008409Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseReturn After Taxes on Distributions and Sale of Fund Sharesrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsAndSalesMemberrr_PerformanceMeasureAxisexplicitMemberfalsefalseInvesco LIBOR Alpha Fund - Class A, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusElevenMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass A, Invesco LIBOR Alpha Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_C000023073Memberrr_ProspectusShareClassAxisexplicitMemberInvesco LIBOR Alpha FundReturn After Taxes on Distributions and Sale of Fund SharesInvesco LIBOR Alpha Fund - Class A, C, R and YClass A, Invesco LIBOR Alpha FundStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsetruefalse00Class&#160;A:Class&#160;A:falsefalsefalsetruefalse3falsetruefalse00Return After Taxes on Distributions and Sale of Fund SharesReturn After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsetruefalse002006-03-312006-03-31falsefalsetruetruefalse6truetruetrue0.00040.0004falsefalsefalsetruefalse7truetruetrue0.00610.0061falsefalsefalsetruefalseOthernanafalsefalseReturn After Taxes on Distributions and Sale of Fund Shares Invesco LIBOR Alpha Fund - Class A, C, R and Y Class A, Invesco LIBOR Alpha Fund8falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco LIBOR Alpha Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000008409Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseBarclays Capital U.S. Aggregate Indexrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_BarclaysCapitalUSAggregateIndexMemberrr_PerformanceMeasureAxisexplicitMemberfalsefalseInvesco LIBOR Alpha Fund - Class A, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusElevenMemberdei_LegalEntityAxisexplicitMembertruefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberInvesco LIBOR Alpha FundBarclays Capital U.S. Aggregate IndexInvesco LIBOR Alpha Fund - Class A, C, R and YShare ClassesStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsetruefalse00Barclays Capital U.S.&#160;Aggregate IndexBarclays Capital U.S.&#160;Aggregate Indexfalsefalsefalsetruefalse4falsefalsefalse00(reflects no deductions for fees, expenses or taxes)(reflects no deductions for fees, expenses or taxes)falsefalsefalsetruefalse5falsetruefalse002006-03-312006-03-31falsefalsetruetruefalse6truetruetrue0.06540.0654falsefalsefalsetruefalse7truetruetrue0.06260.0626falsefalsefalsetruefalseOthernanafalsefalseBarclays Capital U.S. Aggregate Index Invesco LIBOR Alpha Fund - Class A, C, R and Y9falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco LIBOR Alpha Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000008409Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseU.S. Three-Month LIBORrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_USThreeMonthLiborMemberrr_PerformanceMeasureAxisexplicitMemberfalsefalseInvesco LIBOR Alpha Fund - Class A, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusElevenMemberdei_LegalEntityAxisexplicitMembertruefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberInvesco LIBOR Alpha FundU.S. Three-Month LIBORInvesco LIBOR Alpha Fund - Class A, C, R and YShare ClassesStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsetruefalse00U.S.&#160;Three-Month LIBORU.S.&#160;Three-Month LIBORfalsefalsefalsetruefalse4falsefalsefalse00(reflects no deductions for fees, expenses or taxes)(reflects no deductions for fees, expenses or taxes)falsefalsefalsetruefalse5falsetruefalse002006-03-312006-03-31falsefalsetruetruefalse6truetruetrue0.00340.0034falsefalsefalsetruefalse7truetruetrue0.02860.0286falsefalsefalsetruefalseOthernanafalsefalseU.S. Three-Month LIBOR Invesco LIBOR Alpha Fund - Class A, C, R and Y10falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco LIBOR Alpha Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000008409Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseLipper Short Investment Grade Debt Funds Indexrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_LipperShortInvestmentGradeDebtFundsIndexMemberrr_PerformanceMeasureAxisexplicitMemberfalsefalseInvesco LIBOR Alpha Fund - Class A, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusElevenMemberdei_LegalEntityAxisexplicitMembertruefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberInvesco LIBOR Alpha FundLipper Short Investment Grade Debt Funds IndexInvesco LIBOR Alpha Fund - Class A, C, R and YShare ClassesStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsetruefalse00Lipper Short Investment Grade Debt Funds IndexLipper Short Investment Grade Debt Funds Indexfalsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsetruefalse002006-03-312006-03-31falsefalsetruetruefalse6truetruetrue0.04550.0455falsefalsefalsetruefalse7truetruetrue0.03850.0385falsefalsefalsetruefalseOthernanafalsefalseLipper Short Investment Grade Debt Funds Index Invesco LIBOR Alpha Fund - Class A, C, R and Y1Class Y shares' performance shown prior to the inception date is that of Class A shares and includes the 12b-1 fees applicable to Class A shares. Class A shares' performance reflects any applicable fee waivers or expense reimbursements.710Average Annual Total Returns - Invesco LIBOR Alpha Fund (Class A C R & Y) Invesco LIBOR Alpha FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance [Table]28false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor&#8217;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class A shares only and after-tax returns for other classes will vary.falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table Narrative127Risk/Return Summary - Invesco LIBOR Alpha Fund (Class A, C, R and Y) (Invesco LIBOR Alpha Fund, Invesco LIBOR Alpha Fund - Class A, C, R and Y)UnKnownUnKnownUnKnownUnKnownfalsetrue