2.2.0.25truefalse010002 - Document - Quest International Value {Unlabeled}falsefalsetrue1falsefalseUSDtruefalse{dei_DocumentInformationDocumentAxis} : AAAA Member {dei_LegalEntityAxis} : S000008472 Member 3/30/2011 - 3/30/2011 USD ($) $c_S000008472_AAAAhttp://www.sec.gov/CIK0000863250duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseoppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseoppenheimer_S000008472Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170RatioStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$1false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://oppenheimer/role/aaaa1falsefalsefalse00Quest International Value Fund | Oppenheimer Quest International Value FundQuest International Value Fund | Oppenheimer Quest International Value Fundfalsefalsefalsefalsefalse1falsefalseUSDtruefalse{dei_DocumentInformationDocumentAxis} : AAAA Member {dei_LegalEntityAxis} : S000008472 Member 3/30/2011 - 3/30/2011 USD ($) $c_S000008472_AAAAhttp://www.sec.gov/CIK0000863250duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseoppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseoppenheimer_S000008472Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170RatioStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseQuest International Value Fund | Oppenheimer Quest International Value Fund3false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00 <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <b>Investment Objective.</b> The Fund seeks long-term capital appreciation.</p> 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]4false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00 <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <b>Fees and Expenses of the Fund.</b> This table describes the fees and expenses that you may pay if you buy and hold or redeem shares of the Fund. You may qualify for sales charge discounts if you (or you and your spouse) invest, or agree to invest in the future, at least $25,000 in certain funds in the Oppenheimer family of funds. More information about these and other discounts is available from your financial professional and in the section "About Your Account" beginning on page 11 of the prospectus and in the sections "How to Buy Shares" beginning on page 55 and "Appendix A" in the Fund's Statement of Additional Information.</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]5false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00 <b>Shareholder Fees</b> (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]6false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~http://oppenheimer/role/ShareholderFeesDataAAAA column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact oppenheimer_S000008472Member ~</div>falsefalse<div style="display:none">~http://oppenheimer/role/ShareholderFeesDataAAAA column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact oppenheimer_S000008472Member ~</div>falsehttp://oppenheimer/role/ShareholderFeesDataAAAAfalsefalse020012 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000023223Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass AQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$2falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Brr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000023224Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass BQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$3falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Crr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000023225Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass CQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$4falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Nrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000023226Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass NQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$5falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Yrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000069503Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass YQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisoppenheimer_S000008472Member3false0rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPricerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.05750.0575falsefalsefalsetruefalse2truetruetrue00falsefalsefalsetruefalse3truetruetrue00falsefalsefalsetruefalse4truetruetrue00falsefalsefalsetruefalse5truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalseMaximum Sales Charge (Load) imposed on purchases (as % of offering price)falsefalseOppenheimer Quest International Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberOppenheimer Quest International Value Fund0rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPricetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.05750.0575falsefalsefalsetruefalse2truetruetrue00falsefalsefalsetruefalse3truetruetrue00falsefalsefalsetruefalse4truetruetrue00falsefalsefalsetruefalse5truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseMaximum Sales Charge (Load) imposed on purchases (as % of offering price)2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisoppenheimer_S000008472Member4false0rr_MaximumDeferredSalesChargeOverOfferingPricerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalse2truetruetrue0.050.05falsefalsefalsetruefalse3truetruetrue0.010.01falsefalsefalsetruefalse4truetruetrue0.010.01falsefalsefalsetruefalse5truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph a -Clause i -Subsection instructions falsefalseMaximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)falsefalseOppenheimer Quest International Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberOppenheimer Quest International Value Fund0rr_MaximumDeferredSalesChargeOverOfferingPricetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalse2truetruetrue0.050.05falsefalsefalsetruefalse3truetruetrue0.010.01falsefalsefalsetruefalse4truetruetrue0.010.01falsefalsefalsetruefalse5truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseMaximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)52Shareholder Fees Quest International Value Fund Oppenheimer Quest International Value FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisoppenheimer_S000008472MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees [Table]7false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00 <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value your investment)</p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual 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 Caption [Text]8false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://oppenheimer/role/OperatingExpensesDataAAAA column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact oppenheimer_S000008472Member ~</div>falsefalse<div style="display:none">~ http://oppenheimer/role/OperatingExpensesDataAAAA column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact oppenheimer_S000008472Member ~</div>falsehttp://oppenheimer/role/OperatingExpensesDataAAAAfalsefalse020022 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000023223Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass AQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$2falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Brr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000023224Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass BQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$3falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Crr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000023225Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass CQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$4falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Nrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000023226Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass NQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$5falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Yrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000069503Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass YQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisoppenheimer_S000008472Member3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0060.006falsefalsefalsetruefalse2truetruetrue0.0060.006falsefalsefalsetruefalse3truetruetrue0.0060.006falsefalsefalsetruefalse4truetruetrue0.0060.006falsefalsefalsetruefalse5truetruetrue0.0060.006falsefalsefalsetruefalseOtherrr: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 FeesfalsefalseOppenheimer Quest International Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberOppenheimer Quest International Value Fund0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0060.006falsefalsefalsetruefalse2truetruetrue0.0060.006falsefalsefalsetruefalse3truetruetrue0.0060.006falsefalsefalsetruefalse4truetruetrue0.0060.006falsefalsefalsetruefalse5truetruetrue0.0060.006falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisoppenheimer_S000008472Member4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00240.0024falsefalsefalsetruefalse2truetruetrue0.010.01falsefalsefalsetruefalse3truetruetrue0.010.01falsefalsefalsetruefalse4truetruetrue0.0050.005falsefalsefalsetruefalse5truetruetrue00falsefalsefalsetruefalseOtherrr: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) FeesfalsefalseOppenheimer Quest International Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberOppenheimer Quest International Value Fund0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00240.0024falsefalsefalsetruefalse2truetruetrue0.010.01falsefalsefalsetruefalse3truetruetrue0.010.01falsefalsefalsetruefalse4truetruetrue0.0050.005falsefalsefalsetruefalse5truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseDistribution and/or Service (12b-1) Fees3falseRowprimaryElement*Rowdei_LegalEntityAxisAxisoppenheimer_S000008472Member5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truetruetrue0.00560.0056falsefalsefalsetruefalse2truetruetrue0.00990.0099falsefalsefalsetruefalse3truetruetrue0.00710.0071falsefalsefalsetruefalse4truetruetrue0.00690.0069falsefalsefalsetruefalse5truetruetrue0.00270.0027falsefalsefalsetruefalseOtherrr: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 truefalseOther ExpensesfalsefalseOppenheimer Quest International Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberOppenheimer Quest International Value Fund0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00560.0056falsefalsefalsetruefalse2truetruetrue0.00990.0099falsefalsefalsetruefalse3truetruetrue0.00710.0071falsefalsefalsetruefalse4truetruetrue0.00690.0069falsefalsefalsetruefalse5truetruetrue0.00270.0027falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*Rowdei_LegalEntityAxisAxisoppenheimer_S000008472Member6false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truetruetrue0.0140.014falsefalsefalsetruefalse2truetruetrue0.02590.0259falsefalsefalsetruefalse3truetruetrue0.02310.0231falsefalsefalsetruefalse4truetruetrue0.01790.0179falsefalsefalsetruefalse5truetruetrue0.00870.0087falsefalsefalsetruefalseOtherrr: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 truefalseTotal Annual Fund Operating ExpensesfalsefalseOppenheimer Quest International Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberOppenheimer Quest International Value Fund0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0140.014falsefalsefalsetruefalse2truetruetrue0.02590.0259falsefalsefalsetruefalse3truetruetrue0.02310.0231falsefalsefalsetruefalse4truetruetrue0.01790.0179falsefalsefalsetruefalse5truetruetrue0.00870.0087falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses5falseRowprimaryElement*Rowdei_LegalEntityAxisAxisoppenheimer_S000008472Member7false0rr_FeeWaiverOrReimbursementOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00[1]falsefalsefalsetruefalse2truetruetrue-0.0028-0.0028[1]falsefalsefalsetruefalse3truetruetrue-0.0004-0.0004[1]falsefalsefalsetruefalse4truetruetrue-0.0004-0.0004[1]falsefalsefalsetruefalse5truetruetrue00[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 Expense ReimbursementfalsefalseOppenheimer Quest International Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberOppenheimer Quest International Value Fund0rr_FeeWaiverOrReimbursementOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue00falsefalsefalsetruefalse2truetruetrue-0.0028-0.0028falsefalsefalsetruefalse3truetruetrue-0.0004-0.0004falsefalsefalsetruefalse4truetruetrue-0.0004-0.0004falsefalsefalsetruefalse5truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseFee Waiver and Expense Reimbursement6falseRowprimaryElement*Rowdei_LegalEntityAxisAxisoppenheimer_S000008472Member8false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truetruetrue0.0140.014falsefalsefalsetruefalse2truetruetrue0.02310.0231falsefalsefalsetruefalse3truetruetrue0.02270.0227falsefalsefalsetruefalse4truetruetrue0.01750.0175falsefalsefalsetruefalse5truetruetrue0.00870.0087falsefalsefalsetruefalseOtherrr: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 truefalseTotal Annual Fund Operating Expenses After Fee Waiver and Expense ReimbursementfalsefalseOppenheimer Quest International Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberOppenheimer Quest International Value Fund0rr_NetExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0140.014falsefalsefalsetruefalse2truetruetrue0.02310.0231falsefalsefalsetruefalse3truetruetrue0.02270.0227falsefalsefalsetruefalse4truetruetrue0.01750.0175falsefalsefalsetruefalse5truetruetrue0.00870.0087falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses After Fee Waiver and Expense Reimbursement1<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">The Fund's transfer agent has voluntarily agreed to limit its fees for all classes to 0.35% of average annual net assets per class. This voluntary expense limitation may be amended or withdrawn after one year from the date of this prospectus.</p>56Annual Fund Operating Expenses Quest International Value Fund Oppenheimer Quest International Value FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisoppenheimer_S000008472MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]9false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00 <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <b>Example.</b> The following 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 a class of shares of the Fund for the time periods indicated. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your expenses would be as follows: </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]10false0rr_ExpenseExampleByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b>If shares are redeemed</b></p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe 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, Caption [Text]11false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://oppenheimer/role/ExpenseExampleAAAA column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact oppenheimer_S000008472Member ~</div>falsefalse<div style="display:none">~ http://oppenheimer/role/ExpenseExampleAAAA column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact oppenheimer_S000008472Member ~</div>truehttp://oppenheimer/role/ExpenseExampleAAAAfalsefalse020032 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*Columndei_LegalEntityAxisAxisoppenheimer_S000008472Member3false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue710710falsefalsefalsetruefalse2truefalsetrue737737falsefalsefalsetruefalse3truefalsetrue333333falsefalsefalsetruefalse4truefalsetrue279279falsefalsefalsetruefalse5truefalsetrue8989falsefalsefalsetruefalseMonetaryrr: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 YearfalsefalseOppenheimer Quest International Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberOppenheimer Quest International Value FundfalseUSDfalsefalse$2falseColumnprimaryElement*Columndei_LegalEntityAxisAxisoppenheimer_S000008472Member4false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue996996falsefalsefalsetruefalse2truefalsetrue10891089falsefalsefalsetruefalse3truefalsetrue726726falsefalsefalsetruefalse4truefalsetrue564564falsefalsefalsetruefalse5truefalsetrue279279falsefalsefalsetruefalseMonetaryrr: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 YearsfalsefalseOppenheimer Quest International Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberOppenheimer Quest International Value FundfalseUSDfalsefalse$3falseColumnprimaryElement*Columndei_LegalEntityAxisAxisoppenheimer_S000008472Member5false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue13021302falsefalsefalsetruefalse2truefalsetrue15671567falsefalsefalsetruefalse3truefalsetrue12461246falsefalsefalsetruefalse4truefalsetrue974974falsefalsefalsetruefalse5truefalsetrue484484falsefalsefalsetruefalseMonetaryrr: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 YearsfalsefalseOppenheimer Quest International Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberOppenheimer Quest International Value FundfalseUSDfalsefalse$4falseColumnprimaryElement*Columndei_LegalEntityAxisAxisoppenheimer_S000008472Member6false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue21692169falsefalsefalsetruefalse2truefalsetrue23682368falsefalsefalsetruefalse3truefalsetrue26732673falsefalsefalsetruefalse4truefalsetrue21202120falsefalsefalsetruefalse5truefalsetrue10771077falsefalsefalsetruefalseMonetaryrr: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 YearsfalsefalseOppenheimer Quest International Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberOppenheimer Quest International Value FundfalseUSDfalsefalse$1falseRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*Rowdei_DocumentInformationDocumentAxisAxis*RowunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000023223Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass AQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue710710falsefalsefalsetruefalse2truefalsetrue996996falsefalsefalsetruefalse3truefalsetrue13021302falsefalsefalsetruefalse4truefalsetrue21692169falsefalsefalsetruefalseOthernanafalsefalseClass A2falseRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*Rowdei_DocumentInformationDocumentAxisAxis*RowunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Brr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000023224Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass BQuest International Value 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FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue333333falsefalsefalsetruefalse2truefalsetrue726726falsefalsefalsetruefalse3truefalsetrue12461246falsefalsefalsetruefalse4truefalsetrue26732673falsefalsefalsetruefalseOthernanafalsefalseClass C4falseRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*Rowdei_DocumentInformationDocumentAxisAxis*RowunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Nrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000023226Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass NQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue279279falsefalsefalsetruefalse2truefalsetrue564564falsefalsefalsetruefalse3truefalsetrue974974falsefalsefalsetruefalse4truefalsetrue21202120falsefalsefalsetruefalseOthernanafalsefalseClass N5falseRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*Rowdei_DocumentInformationDocumentAxisAxis*RowunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Yrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000069503Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass YQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue8989falsefalsefalsetruefalse2truefalsetrue279279falsefalsefalsetruefalse3truefalsetrue484484falsefalsefalsetruefalse4truefalsetrue10771077falsefalsefalsetruefalseOthernanafalsefalseClass Y45Expense Example Oppenheimer Quest International Value Fund Quest International Value Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*Columndei_LegalEntityAxisAxisoppenheimer_S000008472MemberRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*Rowdei_DocumentInformationDocumentAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]12false0rr_ExpenseExampleNoRedemptionByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b>If shares are not redeemed</b></p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringYou would pay the following expenses if you did not redeem your shares. 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 2 -Subparagraph 1 -Subsection example falsefalseExpense Example, No Redemption, By Year, Caption [Text]13false0rr_ExpenseExampleNoRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://oppenheimer/role/ExpenseExampleNoRedemptionAAAA column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact oppenheimer_S000008472Member ~</div>falsefalse<div style="display:none">~ http://oppenheimer/role/ExpenseExampleNoRedemptionAAAA column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact oppenheimer_S000008472Member ~</div>truehttp://oppenheimer/role/ExpenseExampleNoRedemptionAAAAfalsefalse020042 - Schedule - Expense Example, No Redemption {Transposed}truefalsefalse1falseColumnprimaryElement*Columndei_LegalEntityAxisAxisoppenheimer_S000008472Member3false0rr_ExpenseExampleNoRedemptionYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue710710falsefalsefalsetruefalse2truefalsetrue237237falsefalsefalsetruefalse3truefalsetrue233233falsefalsefalsetruefalse4truefalsetrue179179falsefalsefalsetruefalse5truefalsetrue8989falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. 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 2 -Subparagraph 1 -Subsection example falsefalse1 YearfalsefalseOppenheimer Quest International Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberOppenheimer Quest International Value FundfalseUSDfalsefalse$2falseColumnprimaryElement*Columndei_LegalEntityAxisAxisoppenheimer_S000008472Member4false0rr_ExpenseExampleNoRedemptionYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue996996falsefalsefalsetruefalse2truefalsetrue789789falsefalsefalsetruefalse3truefalsetrue726726falsefalsefalsetruefalse4truefalsetrue564564falsefalsefalsetruefalse5truefalsetrue279279falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. 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 2 -Subparagraph 1 -Subsection example falsefalse3 YearsfalsefalseOppenheimer Quest International Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberOppenheimer Quest International Value FundfalseUSDfalsefalse$3falseColumnprimaryElement*Columndei_LegalEntityAxisAxisoppenheimer_S000008472Member5false0rr_ExpenseExampleNoRedemptionYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue13021302falsefalsefalsetruefalse2truefalsetrue13671367falsefalsefalsetruefalse3truefalsetrue12461246falsefalsefalsetruefalse4truefalsetrue974974falsefalsefalsetruefalse5truefalsetrue484484falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. 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 falsefalse5 YearsfalsefalseOppenheimer Quest International Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberOppenheimer Quest International Value FundfalseUSDfalsefalse$4falseColumnprimaryElement*Columndei_LegalEntityAxisAxisoppenheimer_S000008472Member6false0rr_ExpenseExampleNoRedemptionYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue21692169falsefalsefalsetruefalse2truefalsetrue23682368falsefalsefalsetruefalse3truefalsetrue26732673falsefalsefalsetruefalse4truefalsetrue21202120falsefalsefalsetruefalse5truefalsetrue10771077falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. 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 YearsfalsefalseOppenheimer Quest International Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberOppenheimer Quest International Value FundfalseUSDfalsefalse$1falseRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*Rowdei_DocumentInformationDocumentAxisAxis*RowunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000023223Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass AQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue710710falsefalsefalsetruefalse2truefalsetrue996996falsefalsefalsetruefalse3truefalsetrue13021302falsefalsefalsetruefalse4truefalsetrue21692169falsefalsefalsetruefalseOthernanafalsefalseClass A2falseRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*Rowdei_DocumentInformationDocumentAxisAxis*RowunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Brr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000023224Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass BQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue237237falsefalsefalsetruefalse2truefalsetrue789789falsefalsefalsetruefalse3truefalsetrue13671367falsefalsefalsetruefalse4truefalsetrue23682368falsefalsefalsetruefalseOthernanafalsefalseClass B3falseRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*Rowdei_DocumentInformationDocumentAxisAxis*RowunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Crr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000023225Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass CQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue233233falsefalsefalsetruefalse2truefalsetrue726726falsefalsefalsetruefalse3truefalsetrue12461246falsefalsefalsetruefalse4truefalsetrue26732673falsefalsefalsetruefalseOthernanafalsefalseClass C4falseRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*Rowdei_DocumentInformationDocumentAxisAxis*RowunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Nrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000023226Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass NQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue179179falsefalsefalsetruefalse2truefalsetrue564564falsefalsefalsetruefalse3truefalsetrue974974falsefalsefalsetruefalse4truefalsetrue21202120falsefalsefalsetruefalseOthernanafalsefalseClass N5falseRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*Rowdei_DocumentInformationDocumentAxisAxis*RowunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseClass Yrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_C000069503Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberClass YQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue8989falsefalsefalsetruefalse2truefalsetrue279279falsefalsefalsetruefalse3truefalsetrue484484falsefalsefalsetruefalse4truefalsetrue10771077falsefalsefalsetruefalseOthernanafalsefalseClass Y45Expense Example, No Redemption Oppenheimer Quest International Value Fund Quest International Value Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*Columndei_LegalEntityAxisAxisoppenheimer_S000008472MemberRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*Rowdei_DocumentInformationDocumentAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption.No authoritative reference available.falsefalseExpense Example, No Redemption [Table]14false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00 <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <b>Portfolio Turnover.</b> The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the 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 41% of the average value of its portfolio.</p> 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]15false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00 <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <b> Principal Investment Strategies. </b> The Fund invests mainly in common stock of companies that the portfolio manager believes are undervalued and that are either domiciled or have their primary operations outside the United States. Under normal market conditions, the Fund will invest at least 80% of its net assets, plus borrowings for investment purposes, in common and preferred stocks of issuers in at least five different countries outside the United States and may invest 100% of its assets in foreign companies. </p> <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> The Fund can invest in any country, including countries with developed or emerging markets. From time to time, it may place greater emphasis on investing in one or more particular regions such as Asia, Europe or Latin America. The Fund may invest up to 10% of its total assets in the securities of U.S. issuers. </p> <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> The Fund does not limit its investments to issuers within a specific market capitalization range and at times may invest a substantial portion of its assets in one or more particular capitalization ranges. The Fund may invest up to 10% of its net assets in fixed-income or convertible securities. </p> <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> In selecting investments for the Fund's portfolio, the portfolio manager looks primarily for foreign companies believed to be undervalued by the market. A security may be undervalued because the market is not aware of the issuer's intrinsic value, does not yet recognize its future potential, or the issuer may be temporarily out of favor. The Fund seeks to realize gains in the prices of those securities if and when other investors recognize their real or prospective worth. The portfolio manager uses a "bottom up" approach to select securities one at a time before considering industry trends. This approach includes fundamental analysis of a company's financial statements and management structure and consideration of the company's operations, business strategy, product development and industry position. The portfolio manager monitors individual issuers for changes in the factors above, which may trigger a decision to sell a security, but does not require such a decision. The portfolio manager may also consider selling a security if its share price is approaching its targeted price or if alternative investment ideas have been developed. </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]16false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00 <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <b>Principal Risks.</b> The price of the Fund's shares can go up and down substantially. The value of the Fund's investments may change because of broad changes in the markets in which the Fund invests or from poor security selection, which could cause the Fund to underperform other funds with similar investment objectives. There is no assurance that the Fund will achieve its investment objective. When you redeem your shares, they may be worth more or less than what you paid for them. <i>These risks mean that you can lose money by investing in the Fund.</i> </p> <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <b>Main Risks of Investing in Stock.</b> The value of the Fund's portfolio may be affected by changes in the stock markets. Stock markets may experience significant short-term volatility and may fall sharply at times. Different stock markets may behave differently from each other and U.S. stock markets may move in the opposite direction from one or more foreign stock markets.</p> <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">The prices of individual stocks generally do not all move in the same direction at the same time and a variety of factors can affect the price of a particular company's stock. These factors may include, but are not limited to: poor earnings reports, a loss of customers, litigation against the company, general unfavorable performance of the company's sector or industry, or changes in government regulations affecting the company or its industry.</p> <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> At times, the Fund may emphasize investments in a particular industry or economic or market sector. To the extent that the Fund increases its emphasis on investments in a particular industry or sector, the value of its investments may fluctuate more in response to events affecting that industry or sector, such as changes in economic conditions, government regulations, availability of basic resources or supplies, or other events that affect that industry or sector more than others. </p> <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <b>Main Risks of Foreign Investing.</b> Foreign securities are subject to special risks. Foreign issuers are usually not subject to the same accounting and disclosure requirements that U.S. companies are subject to, which may make it difficult for the Fund to evaluate a foreign company's operations or financial condition. A change in the value of a foreign currency against the U.S. dollar will result in a change in the U.S. dollar value of securities denominated in that foreign currency and in the value of any income or distributions the Fund may receive on those securities. The value of foreign investments may be affected by exchange control regulations, foreign taxes, higher transaction and other costs, delays in the settlement of transactions, changes in economic or monetary policy in the United States or abroad, expropriation or nationalization of a company's assets, or other political and economic factors. These risks may be greater for investments in developing or emerging market countries.</p> <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <b> <i>Special Risks of Developing and Emerging Markets.</i> </b> The economies of developing or emerging market countries may be more dependent on relatively few industries that may be highly vulnerable to local and global changes. The governments of developing and emerging market countries may also be more unstable than the governments of more developed countries. These countries generally have less developed securities markets or exchanges, and less developed legal and accounting systems. Securities may be more difficult to sell at an acceptable price and may be more volatile than securities in countries with more mature markets. The value of developing or emerging market currencies may fluctuate more than the currencies of countries with more mature markets. Investments in developing or emerging market countries may be subject to greater risks of government restrictions, including confiscatory taxation, expropriation or nationalization of a company's assets, restrictions on foreign ownership of local companies and restrictions on withdrawing assets from the country. Investments in securities of issuers in developing or emerging market countries may be considered speculative.</p> <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <b>Main Risks of Value Investing.</b> Value investing entails the risk that if the market does not recognize that the Fund's securities are undervalued, the prices of those securities might not appreciate as anticipated. A value approach could also result in fewer investments that increase rapidly during times of market gains and could cause the Fund to underperform funds that use a growth or non-value approach to investing. Value investing has gone in and out of favor during past market cycles and when value investing is out of favor or when markets are unstable, the securities of "value" companies may underperform the securities of "growth" companies.</p> <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <b>Main Risks of Small- and Mid-Sized Companies.</b> The stock prices of small- and mid-sized companies may be more volatile and their securities may be more difficult to sell than those of larger companies. They may not have established markets, may have fewer customers and product lines, may have unseasoned management or less management depth and may have more limited access to financial resources. Smaller companies may not pay dividends or provide capital gains for some time, if at all.</p> <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <b>WHO IS THE FUND DESIGNED FOR?</b> The Fund is designed primarily for investors seeking capital appreciation over the long term. Those investors should be willing to assume the risks of short-term share price fluctuations and losses that are typical for a fund focusing on equity securities of issuers in foreign countries. Since the Fund's income level will fluctuate and will likely be small, it is not designed for investors needing an assured level of current income. The Fund is not a complete investment program and may not be appropriate for all investors. You should carefully consider your own investment goals and risk tolerance before investing in the Fund.</p> <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <b> An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. </b> </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]17false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00 <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <b>The Fund's Past Performance.</b> The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5 and 10 years compare with those of a broad measure of market performance. The Fund's past investment performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More recent performance information is available by calling the toll-free number on the back of this prospectus and on the Fund's website: www.oppenheimerfunds.com/fund/QuestInternationalValueFund </p> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance Narrative [Text Block]18false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact oppenheimer_S000008472Member ~</div>falsefalseBarChart2.jpg<div style="display:none">~http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact oppenheimer_S000008472Member ~</div>falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisoppenheimer_S000008472MemberColumndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2011-03-30T00:00:002011-03-30T00:00:00falsefalseOppenheimer Quest International Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_S000008472Memberdei_LegalEntityAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberOppenheimer Quest International Value FundQuest International Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1406-0.1406falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20010rr_AnnualReturn2001truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1406-0.1406falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20012falseRowprimaryElement*4false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1771-0.1771falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20020rr_AnnualReturn2002truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1771-0.1771falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20023falseRowprimaryElement*5false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.35210.3521falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20030rr_AnnualReturn2003truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.35210.3521falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20034falseRowprimaryElement*6false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.1410.141falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20040rr_AnnualReturn2004truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.1410.141falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20045falseRowprimaryElement*7false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.13520.1352falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20050rr_AnnualReturn2005truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.13520.1352falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20056falseRowprimaryElement*8false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.25380.2538falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20060rr_AnnualReturn2006truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.25380.2538falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20067falseRowprimaryElement*9false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0008-0.0008falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0008-0.0008falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20078falseRowprimaryElement*10false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4781-0.4781falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4781-0.4781falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20089falseRowprimaryElement*11false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.48810.4881falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.48810.4881falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 200910falseRowprimaryElement*12false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.13510.1351falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.13510.1351falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 2010110Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisoppenheimer_S000008472MemberColumndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]19false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00 <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">Sales charges and taxes are not included and returns would be lower if they were. During the period shown, the highest return for a calendar quarter was 41.34% (2nd Qtr 09) and the lowest return was -20.32% (4th Qtr 08). For the period from January 1, 2010 through December 31, 2010 the cumulative return before sales charges and taxes was 13.51%.</p> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart Closing [Text Block]20false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00 <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <b>Average Annual Total Returns</b> for the periods ended December 31, 2010</p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table Heading21false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00 <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">The following table shows the average annual total returns for each class of the Fund's shares. After-tax returns are calculated using the highest individual federal marginal income tax rates and do not reflect the impact of state or local taxes. Your actual after-tax returns, depending on your individual tax situation, 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 only one class and after-tax returns for other classes will vary.</p> 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 Narrative22false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://oppenheimer/role/PerformanceTableDataAAAA column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact oppenheimer_S000008472Member 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Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberfalsefalseQuest International Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_AAAAMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseMorgan Stanley Capital International (MSCI) EAFE Index (reflects no deduction for fees, expenses or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldioppenheimer_bench2011040608AAAAMemberrr_PerformanceMeasureAxisexplicitMemberShare ClassesQuest International Value FundMorgan Stanley Capital International (MSCI) EAFE Index (reflects no deduction for fees, expenses or taxes)Standard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truetruetrue0.42390.4239[1]falsefalsefalsetruefalse4truetruetrue0.04390.0439[2]falsefalsefalsetruefalseOthernanafalsefalseMorgan Stanley Capital International (MSCI) EAFE Index (reflects no deduction for fees, expenses or taxes)1<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">From 10-31-08</p>2<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">From 02-28-01</p>49Average Annual Total Returns Oppenheimer Quest International Value Fund Quest International Value FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*Columndei_LegalEntityAxisAxisoppenheimer_S000008472MemberRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance [Table]121Quest International Value (Quest International Value Fund, Oppenheimer Quest International Value Fund)UnKnownUnKnownUnKnownUnKnownfalsetrue