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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 $50,000 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. 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Class A, B, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusTwelveMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass Y, Invesco Small Companies Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_C000071227Memberrr_ProspectusShareClassAxisexplicitMemberInvesco Small Companies FundInvesco Small Companies Fund - Class A, B, C, R and YClass Y, Invesco Small Companies FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*4false0rr_OperatingExpensesColumnNamerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Class: Afalsefalsefalsetruefalse2falsefalsefalse00Class: Bfalsefalsefalsetruefalse3falsefalsefalse00Class: Cfalsefalsefalsetruefalse4falsefalsefalse00Class: Rfalsefalsefalsetruefalse5falsefalsefalse00Class: YfalsefalsefalsetruefalseOtherus-types:textBlockItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses Column [Text]0rr_OperatingExpensesColumnNametruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Class: AClass: Afalsefalsefalsetruefalse2falsefalsefalse00Class: BClass: Bfalsefalsefalsetruefalse3falsefalsefalse00Class: CClass: Cfalsefalsefalsetruefalse4falsefalsefalse00Class: RClass: Rfalsefalsefalsetruefalse5falsefalsefalse00Class: YClass: YfalsefalsefalsetruefalseOthernanafalsefalseOperating Expenses Column [Text]2falseRowprimaryElement*5false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.00740.0074falsefalsefalsetruefalse2truetruetrue0.00740.0074falsefalsefalsetruefalse3truetruetrue0.00740.0074falsefalsefalsetruefalse4truetruetrue0.00740.0074falsefalsefalsetruefalse5truetruetrue0.00740.0074falsefalsefalsetruefalseOtherrr: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: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00740.0074falsefalsefalsetruefalse2truetruetrue0.00740.0074falsefalsefalsetruefalse3truetruetrue0.00740.0074falsefalsefalsetruefalse4truetruetrue0.00740.0074falsefalsefalsetruefalse5truetruetrue0.00740.0074falsefalsefalsetruefalseOthernanafalsefalseManagement Fees3falseRowprimaryElement*6false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.00250.0025falsefalsefalsetruefalse2truetruetrue0.01000.0100falsefalsefalsetruefalse3truetruetrue0.01000.0100falsefalsefalsetruefalse4truetruetrue0.00500.0050falsefalsefalsetruefalse5truetruetrue0.00000.0000falsefalsefalsetruefalseOtherrr: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: 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_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsetruefalse2truetruetrue0.01000.0100falsefalsefalsetruefalse3truetruetrue0.01000.0100falsefalsefalsetruefalse4truetruetrue0.00500.0050falsefalsefalsetruefalse5truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalseDistribution and/or Service (12b-1) Fees4falseRowprimaryElement*7false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.00340.0034falsefalsefalsetruefalse2truetruetrue0.00340.0034falsefalsefalsetruefalse3truetruetrue0.00340.0034falsefalsefalsetruefalse4truetruetrue0.00340.0034falsefalsefalsetruefalse5truetruetrue0.00340.0034falsefalsefalsetruefalseOtherrr: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_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00340.0034falsefalsefalsetruefalse2truetruetrue0.00340.0034falsefalsefalsetruefalse3truetruetrue0.00340.0034falsefalsefalsetruefalse4truetruetrue0.00340.0034falsefalsefalsetruefalse5truetruetrue0.00340.0034falsefalsefalsetruefalseOthernanafalsefalseOther Expenses5falseRowprimaryElement*8false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.01330.0133falsefalsefalsetruefalse2truetruetrue0.02080.0208falsefalsefalsetruefalse3truetruetrue0.02080.0208falsefalsefalsetruefalse4truetruetrue0.01580.0158falsefalsefalsetruefalse5truetruetrue0.01080.0108falsefalsefalsetruefalseOtherrr: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_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01330.0133falsefalsefalsetruefalse2truetruetrue0.02080.0208falsefalsefalsetruefalse3truetruetrue0.02080.0208falsefalsefalsetruefalse4truetruetrue0.01580.0158falsefalsefalsetruefalse5truetruetrue0.01080.0108falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses55Annual Fund Operating Expenses - Invesco Small Companies Fund (Class A B C R & Y) Invesco Small Companies Fund Invesco Small Companies Fund - Class A, B, 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/ExpenseExampleInvescoSmallCompaniesFundClassBCRAndY column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_DocumentInformationDocumentAxis compact aimif826644_S000000239_Member * row dei_LegalEntityAxis compact aimif826644_Prospectus_Twelve_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/ExpenseExampleInvescoSmallCompaniesFundClassBCRAndY column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_DocumentInformationDocumentAxis compact aimif826644_S000000239_Member * row dei_LegalEntityAxis compact aimif826644_Prospectus_Twelve_Member * ~&amp;lt;/div&amp;gt; &lt;/div&gt;</div>truehttp://invesco.com/role/ExpenseExampleInvescoSmallCompaniesFundClassBCRAndYfalsefalse02003011 - Schedule - Expense Example - Invesco Small Companies Fund (Class A B C R & Y) {Transposed}truefalsefalse1falseColumnprimaryElement*4false0rr_ExpenseExampleByYearColumnNamerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Class Afalsefalsefalsetruefalse2falsefalsefalse00Class Bfalsefalsefalsetruefalse3falsefalsefalse00Class Cfalsefalsefalsetruefalse4falsefalsefalse00Class Rfalsefalsefalsetruefalse5falsefalsefalse00Class 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.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue678678falsefalsefalsetruefalse2truefalsetrue711711falsefalsefalsetruefalse3truefalsetrue311311falsefalsefalsetruefalse4truefalsetrue161161falsefalsefalsetruefalse5truefalsetrue110110falsefalsefalsetruefalseMonetaryrr: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.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue948948falsefalsefalsetruefalse2truefalsetrue952952falsefalsefalsetruefalse3truefalsetrue652652falsefalsefalsetruefalse4truefalsetrue499499falsefalsefalsetruefalse5truefalsetrue343343falsefalsefalsetruefalseMonetaryrr: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.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue12391239falsefalsefalsetruefalse2truefalsetrue13191319falsefalsefalsetruefalse3truefalsetrue11191119falsefalsefalsetruefalse4truefalsetrue860860falsefalsefalsetruefalse5truefalsetrue595595falsefalsefalsetruefalseMonetaryrr: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.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue20632063falsefalsefalsetruefalse2truefalsetrue22192219falsefalsefalsetruefalse3truefalsetrue24102410falsefalsefalsetruefalse4truefalsetrue18781878falsefalsefalsetruefalse5truefalsetrue13171317falsefalsefalsetruefalseMonetaryrr: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 Small Companies Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000000239Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseInvesco Small Companies Fund - Class A, B, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusTwelveMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass A, Invesco Small Companies Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_C000000579Memberrr_ProspectusShareClassAxisexplicitMemberInvesco Small Companies FundInvesco Small Companies Fund - Class A, B, C, R and YClass A, Invesco Small Companies FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Class AClass Afalsefalsefalsetruefalse2truefalsetrue678678falsefalsefalsetruefalse3truefalsetrue948948falsefalsefalsetruefalse4truefalsetrue12391239falsefalsefalsetruefalse5truefalsetrue20632063falsefalsefalsetruefalseOthernanafalsefalseClass A, Invesco Small Companies Fund2falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco Small Companies Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000000239Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseInvesco Small Companies Fund - Class A, B, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusTwelveMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass B, Invesco Small Companies Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_C000000580Memberrr_ProspectusShareClassAxisexplicitMemberInvesco Small Companies FundInvesco Small Companies Fund - Class A, B, C, R and YClass B, Invesco Small Companies FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Class BClass Bfalsefalsefalsetruefalse2truefalsetrue711711falsefalsefalsetruefalse3truefalsetrue952952falsefalsefalsetruefalse4truefalsetrue13191319falsefalsefalsetruefalse5truefalsetrue22192219falsefalsefalsetruefalseOthernanafalsefalseClass B, Invesco Small Companies Fund3falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco Small Companies Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000000239Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseInvesco Small Companies Fund - Class A, B, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusTwelveMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass C, Invesco Small Companies Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_C000000581Memberrr_ProspectusShareClassAxisexplicitMemberInvesco Small Companies FundInvesco Small Companies Fund - Class A, B, C, R and YClass C, Invesco Small Companies FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Class CClass Cfalsefalsefalsetruefalse2truefalsetrue311311falsefalsefalsetruefalse3truefalsetrue652652falsefalsefalsetruefalse4truefalsetrue11191119falsefalsefalsetruefalse5truefalsetrue24102410falsefalsefalsetruefalseOthernanafalsefalseClass C, Invesco Small Companies Fund4falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco Small Companies Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000000239Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseInvesco Small Companies Fund - 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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>Debt Securities Risk.</i> The Fund may invest in debt securities that are affected by changing interest rates and changes in their effective maturities and credit quality.</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. 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They also may be illiquid or restricted as to resale, or may trade less frequently and in smaller volumes, all of which may cause difficulty when establishing or closing a position at a desirable price.</p><p><i>U.S. Government Obligations Risk.</i> The Fund may invest in obligations issued by U.S. government agencies and instrumentalities that may receive varying levels of support from the government, which could affect the Fund&#8217;s ability to recover should they default.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. 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Class A, B, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusTwelveMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass C, Invesco Small Companies Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_C000000581Memberrr_ProspectusShareClassAxisexplicitMemberInvesco Small Companies FundBefore TaxesInvesco Small Companies Fund - Class A, B, C, R and YClass C, Invesco Small Companies FundStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsetruefalse00Class&#160;C:Class&#160;C:falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsetruefalse002003-11-042003-11-04falsefalsetruetruefalse6truetruetrue0.20620.2062falsefalsefalsetruefalse7truetruetrue0.06230.0623falsefalsefalsetruefalse8truetruetrue0.09770.0977falsefalsefalsetruefalseOthernanafalsefalseBefore Taxes Invesco Small Companies Fund - Class A, B, C, R and Y Class C, Invesco Small Companies Fund5falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco Small Companies Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000000239Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseBefore Taxesrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_BeforeTaxesMemberrr_PerformanceMeasureAxisexplicitMemberfalsefalseInvesco Small Companies Fund - Class A, B, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusTwelveMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass R, Invesco Small Companies Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_C000000582Memberrr_ProspectusShareClassAxisexplicitMemberInvesco Small Companies FundBefore TaxesInvesco Small Companies Fund - Class A, B, C, R and YClass R, Invesco Small Companies FundStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsetruefalse00Class&#160;R:Class&#160;R:[1]falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsetruefalse002004-04-302004-04-30falsefalsetruetruefalse6truetruetrue0.22250.2225falsefalsefalsetruefalse7truetruetrue0.06790.0679falsefalsefalsetruefalse8truetruetrue0.10330.1033falsefalsefalsetruefalseOthernanafalsefalseBefore Taxes Invesco Small Companies Fund - Class A, B, C, R and Y Class R, Invesco Small Companies Fund6falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco Small Companies Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000000239Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseBefore Taxesrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_BeforeTaxesMemberrr_PerformanceMeasureAxisexplicitMemberfalsefalseInvesco Small Companies Fund - Class A, B, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusTwelveMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass Y, Invesco Small Companies Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_C000071227Memberrr_ProspectusShareClassAxisexplicitMemberInvesco Small Companies FundBefore TaxesInvesco Small Companies Fund - Class A, B, C, R and YClass Y, Invesco Small Companies FundStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsetruefalse00Class&#160;Y:Class&#160;Y:[2]falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsetruefalse002008-10-032008-10-03falsefalsetruetruefalse6truetruetrue0.22880.2288falsefalsefalsetruefalse7truetruetrue0.07160.0716falsefalsefalsetruefalse8truetruetrue0.10650.1065falsefalsefalsetruefalseOthernanafalsefalseBefore Taxes Invesco Small Companies Fund - Class A, B, C, R and Y Class Y, Invesco Small Companies Fund7falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco Small Companies Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000000239Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseAfter Taxes on Distributionsrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsMemberrr_PerformanceMeasureAxisexplicitMemberfalsefalseInvesco Small Companies Fund - Class A, B, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusTwelveMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass A, Invesco Small Companies Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_C000000579Memberrr_ProspectusShareClassAxisexplicitMemberInvesco Small Companies FundAfter Taxes on DistributionsInvesco Small Companies Fund - Class A, B, C, R and YClass A, Invesco Small Companies FundStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsetruefalse00Class&#160;A:Class&#160;A:falsefalsefalsetruefalse3falsetruefalse00After Taxes on DistributionsAfter Taxes on Distributionsfalsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsetruefalse002003-11-042003-11-04falsefalsetruetruefalse6truetruetrue0.15840.1584falsefalsefalsetruefalse7truetruetrue0.05300.0530falsefalsefalsetruefalse8truetruetrue0.09210.0921falsefalsefalsetruefalseOthernanafalsefalseAfter Taxes on Distributions Invesco Small Companies Fund - Class A, B, C, R and Y Class A, Invesco Small Companies Fund8falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco Small Companies Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000000239Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseReturn After Taxes on Distributions and Sale of Fund Sharesrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsAndSalesMemberrr_PerformanceMeasureAxisexplicitMemberfalsefalseInvesco Small Companies Fund - Class A, B, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusTwelveMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass A, Invesco Small Companies Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_C000000579Memberrr_ProspectusShareClassAxisexplicitMemberInvesco Small Companies FundReturn After Taxes on Distributions and Sale of Fund SharesInvesco Small Companies Fund - Class A, B, C, R and YClass A, Invesco Small Companies FundStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsetruefalse00Class&#160;A:Class&#160;A:falsefalsefalsetruefalse3falsetruefalse00Return After Taxes on Distributions and Sale of Fund SharesReturn After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsetruefalse002003-11-042003-11-04falsefalsetruetruefalse6truetruetrue0.10300.1030falsefalsefalsetruefalse7truetruetrue0.04870.0487falsefalsefalsetruefalse8truetruetrue0.08360.0836falsefalsefalsetruefalseOthernanafalsefalseReturn After Taxes on Distributions and Sale of Fund Shares Invesco Small Companies Fund - Class A, B, C, R and Y Class A, Invesco Small Companies Fund9falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco Small Companies Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000000239Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseS&P 500 Indexrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_SAndPFiveHundredIndexMemberrr_PerformanceMeasureAxisexplicitMemberfalsefalseInvesco Small Companies Fund - Class A, B, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusTwelveMemberdei_LegalEntityAxisexplicitMembertruefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberInvesco Small Companies FundS&P 500 IndexInvesco Small Companies Fund - Class A, B, C, R and YShare ClassesStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsetruefalse00S&P 500&#174; IndexS&P 500&#174; Indexfalsefalsefalsetruefalse4falsefalsefalse00(reflects no deductions for fees, expenses or taxes)(reflects no deductions for fees, expenses or taxes)falsefalsefalsetruefalse5falsetruefalse002003-10-312003-10-31falsefalsetruetruefalse6truetruetrue0.15080.1508falsefalsefalsetruefalse7truetruetrue0.02290.0229falsefalsefalsetruefalse8truetruetrue0.04630.0463falsefalsefalsetruefalseOthernanafalsefalseS&P 500 Index Invesco Small Companies Fund - Class A, B, C, R and Y10falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco Small Companies Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000000239Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseRussell 2000 Indexrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_RussellTwoThousandIndexMemberrr_PerformanceMeasureAxisexplicitMemberfalsefalseInvesco Small Companies Fund - Class A, B, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusTwelveMemberdei_LegalEntityAxisexplicitMembertruefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberInvesco Small Companies FundRussell 2000 IndexInvesco Small Companies Fund - Class A, B, C, R and YShare ClassesStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsetruefalse00Russell 2000&#174; IndexRussell 2000&#174; Indexfalsefalsefalsetruefalse4falsefalsefalse00(reflects no deductions for fees, expenses or taxes)(reflects no deductions for fees, expenses or taxes)falsefalsefalsetruefalse5falsetruefalse002003-10-312003-10-31falsefalsetruetruefalse6truetruetrue0.26850.2685falsefalsefalsetruefalse7truetruetrue0.04470.0447falsefalsefalsetruefalse8truetruetrue0.07030.0703falsefalsefalsetruefalseOthernanafalsefalseRussell 2000 Index Invesco Small Companies Fund - Class A, B, C, R and Y11falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-12T00:00:002011-02-28T00:00:00falsefalseInvesco Small Companies Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_S000000239Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseLipper Small-Cap Core Funds Indexrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_LipperSmallCapCoreFundsIndexMemberrr_PerformanceMeasureAxisexplicitMemberfalsefalseInvesco Small Companies Fund - Class A, B, C, R and Ydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiaimif826644_ProspectusTwelveMemberdei_LegalEntityAxisexplicitMembertruefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberInvesco Small Companies FundLipper Small-Cap Core Funds IndexInvesco Small Companies Fund - Class A, B, C, R and YShare ClassesStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsetruefalse00Lipper Small-Cap Core Funds IndexLipper Small-Cap Core Funds Indexfalsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsetruefalse002003-10-312003-10-31falsefalsetruetruefalse6truetruetrue0.25710.2571falsefalsefalsetruefalse7truetruetrue0.04760.0476falsefalsefalsetruefalse8truetruetrue0.07780.0778falsefalsefalsetruefalseOthernanafalsefalseLipper Small-Cap Core Funds Index Invesco Small Companies Fund - Class A, B, C, R and Y1Class R shares' performance shown prior to the inception date is that of Class A shares restated to reflect the higher 12b-1 fees applicable to Class R shares. Class A shares' performance reflects any applicable fee waivers or expense reimbursements.2Class 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.811Average Annual Total Returns - Invesco Small Companies Fund Class A B C R & Y) Invesco Small Companies 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 Small Companies Fund (Class A, B, C, R and Y) (Invesco Small Companies Fund, Invesco Small Companies Fund - Class A, B, C, R and Y)UnKnownUnKnownUnKnownUnKnownfalsetrue