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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.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts on Class&#160;A shares of the Fund if you and members of your immediate family (that share a mailing address) invest, or agree to invest in the future, at least $50,000 in any of the Columbia, Columbia Acorn or RiverSource funds (including the Seligman and Threadneedle branded funds) (the Fund&#160;Family). More information about these and other discounts is available from your financial intermediary and under &#8220;Reductions/Waivers of Sales Charges&#160;&#8212;&#160;Front-End Sales Charge Reductions&#8221; on page&#160;S.14 of this prospectus and on page 40 of the Fund&#8217;s Statement of Additional Information (SAI).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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Sharesdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicfst1352280_ProspectusOneMemberdei_LegalEntityAxisexplicitMemberfalsefalseColumbia Absolute Return Enhanced Multi-Strategy Fund, Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldicfst1352280_C000098766Memberrr_ProspectusShareClassAxisexplicitMemberColumbia Absolute Return Enhanced Multi-Strategy FundClass A, B, C, I, R and W SharesColumbia Absolute Return Enhanced Multi-Strategy Fund, Class IUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$5falseColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxis*Columndei_LegalEntityAxisAxis*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2010-04-01T00:00:002011-03-31T00:00:00falsefalseColumbia Absolute Return Enhanced Multi-Strategy Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicfst1352280_S000031732Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseClass A, B, C, I, R and W Sharesdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicfst1352280_ProspectusOneMemberdei_LegalEntityAxisexplicitMemberfalsefalseColumbia Absolute Return Enhanced Multi-Strategy Fund, Class Rrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldicfst1352280_C000098767Memberrr_ProspectusShareClassAxisexplicitMemberColumbia Absolute Return Enhanced Multi-Strategy FundClass A, B, C, I, R and W SharesColumbia Absolute Return Enhanced Multi-Strategy Fund, Class RUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$6falseColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxis*Columndei_LegalEntityAxisAxis*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2010-04-01T00:00:002011-03-31T00:00:00falsefalseColumbia Absolute Return Enhanced Multi-Strategy Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicfst1352280_S000031732Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseClass A, B, C, I, R and W Sharesdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicfst1352280_ProspectusOneMemberdei_LegalEntityAxisexplicitMemberfalsefalseColumbia Absolute Return Enhanced Multi-Strategy Fund, Class Wrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldicfst1352280_C000098771Memberrr_ProspectusShareClassAxisexplicitMemberColumbia Absolute Return Enhanced Multi-Strategy FundClass A, B, C, I, R and W SharesColumbia Absolute Return Enhanced Multi-Strategy Fund, Class WUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*4false0rr_OperatingExpensesColumnNamerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Class Afalsefalsefalsetruefalse2falsefalsefalse00Class Bfalsefalsefalsetruefalse3falsefalsefalse00Class Cfalsefalsefalsetruefalse4falsefalsefalse00Class Ifalsefalsefalsetruefalse5falsefalsefalse00Class Rfalsefalsefalsetruefalse6falsefalsefalse00Class WfalsefalsefalsetruefalseOtherus-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 IClass Ifalsefalsefalsetruefalse5falsefalsefalse00Class RClass Rfalsefalsefalsetruefalse6falsefalsefalse00Class WClass WfalsefalsefalsetruefalseOthernanafalsefalseOperating Expenses Column [Text]2falseRowprimaryElement*5false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.00920.0092falsefalsefalsetruefalse2truetruetrue0.00920.0092falsefalsefalsetruefalse3truetruetrue0.00920.0092falsefalsefalsetruefalse4truetruetrue0.00920.0092falsefalsefalsetruefalse5truetruetrue0.00920.0092falsefalsefalsetruefalse6truetruetrue0.00920.0092falsefalsefalsetruefalseOtherrr: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_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00920.0092falsefalsefalsetruefalse2truetruetrue0.00920.0092falsefalsefalsetruefalse3truetruetrue0.00920.0092falsefalsefalsetruefalse4truetruetrue0.00920.0092falsefalsefalsetruefalse5truetruetrue0.00920.0092falsefalsefalsetruefalse6truetruetrue0.00920.0092falsefalsefalsetruefalseOthernanafalsefalseManagement fees3falseRowprimaryElement*6false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.00250.0025falsefalsefalsetruefalse2truetruetrue0.01000.0100falsefalsefalsetruefalse3truetruetrue0.01000.0100falsefalsefalsetruefalse4truetruetrue0.00000.0000falsefalsefalsetruefalse5truetruetrue0.00500.0050falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr: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_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsetruefalse2truetruetrue0.01000.0100falsefalsefalsetruefalse3truetruetrue0.01000.0100falsefalsefalsetruefalse4truetruetrue0.00000.0000falsefalsefalsetruefalse5truetruetrue0.00500.0050falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalseOthernanafalsefalseDistribution and/or service (12b-1) fees4falseRowprimaryElement*7false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.00490.0049[2]falsefalsefalsetruefalse2truetruetrue0.00490.0049[2]falsefalsefalsetruefalse3truetruetrue0.00490.0049[2]falsefalsefalsetruefalse4truetruetrue0.00350.0035[2]falsefalsefalsetruefalse5truetruetrue0.00490.0049[2]falsefalsefalsetruefalse6truetruetrue0.00490.0049[2]falsefalsefalsetruefalseOtherrr: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_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00490.0049falsefalsefalsetruefalse2truetruetrue0.00490.0049falsefalsefalsetruefalse3truetruetrue0.00490.0049falsefalsefalsetruefalse4truetruetrue0.00350.0035falsefalsefalsetruefalse5truetruetrue0.00490.0049falsefalsefalsetruefalse6truetruetrue0.00490.0049falsefalsefalsetruefalseOthernanafalsefalseOther expenses5falseRowprimaryElement*8false0rr_Component1OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.00170.0017[1]falsefalsefalsetruefalse2truetruetrue0.00170.0017[1]falsefalsefalsetruefalse3truetruetrue0.00170.0017[1]falsefalsefalsetruefalse4truetruetrue0.00170.0017[1]falsefalsefalsetruefalse5truetruetrue0.00170.0017[1]falsefalsefalsetruefalse6truetruetrue0.00170.0017[1]falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureThe Fund may subdivide this caption into no more than three subcaptions that identify the largest expense or expenses comprising "Other Expenses," but must include a total of all "Other Expenses." Alternatively, the Fund may include the components of "Other Expenses" in a parenthetical to the caption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause iii -Subsection instructions falsefalseDividend expenses and borrowing costs on securities sold short0rr_Component1OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[2]1truetruetrue0.00170.0017falsefalsefalsetruefalse2truetruetrue0.00170.0017falsefalsefalsetruefalse3truetruetrue0.00170.0017falsefalsefalsetruefalse4truetruetrue0.00170.0017falsefalsefalsetruefalse5truetruetrue0.00170.0017falsefalsefalsetruefalse6truetruetrue0.00170.0017falsefalsefalsetruefalseOthernanafalsefalseDividend expenses and borrowing costs on securities sold short6falseRowprimaryElement*9false0rr_Component2OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.00320.0032falsefalsefalsetruefalse2truetruetrue0.00320.0032falsefalsefalsetruefalse3truetruetrue0.00320.0032falsefalsefalsetruefalse4truetruetrue0.00180.0018falsefalsefalsetruefalse5truetruetrue0.00320.0032falsefalsefalsetruefalse6truetruetrue0.00320.0032falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureThe Fund may subdivide this caption into no more than three subcaptions that identify the largest expense or expenses comprising "Other Expenses," but must include a total of all "Other Expenses." Alternatively, the Fund may include the components of "Other Expenses" in a parenthetical to the caption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 10 -Subsection table falsefalseRemainder of other expenses0rr_Component2OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00320.0032falsefalsefalsetruefalse2truetruetrue0.00320.0032falsefalsefalsetruefalse3truetruetrue0.00320.0032falsefalsefalsetruefalse4truetruetrue0.00180.0018falsefalsefalsetruefalse5truetruetrue0.00320.0032falsefalsefalsetruefalse6truetruetrue0.00320.0032falsefalsefalsetruefalseOthernanafalsefalseRemainder of other expenses7falseRowprimaryElement*10false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.01660.0166falsefalsefalsetruefalse2truetruetrue0.02410.0241falsefalsefalsetruefalse3truetruetrue0.02410.0241falsefalsefalsetruefalse4truetruetrue0.01270.0127falsefalsefalsetruefalse5truetruetrue0.01910.0191falsefalsefalsetruefalse6truetruetrue0.01660.0166falsefalsefalsetruefalseOtherrr: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_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01660.0166falsefalsefalsetruefalse2truetruetrue0.02410.0241falsefalsefalsetruefalse3truetruetrue0.02410.0241falsefalsefalsetruefalse4truetruetrue0.01270.0127falsefalsefalsetruefalse5truetruetrue0.01910.0191falsefalsefalsetruefalse6truetruetrue0.01660.0166falsefalsefalsetruefalseOthernanafalsefalseTotal annual fund operating expenses8falseRowprimaryElement*11false0rr_FeeWaiverOrReimbursementOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue-0.0001-0.0001[3]falsefalsefalsetruefalse2truetruetrue-0.0001-0.0001[3]falsefalsefalsetruefalse3truetruetrue-0.0001-0.0001[3]falsefalsefalsetruefalse4truetruetrue0.00000.0000[3]falsefalsefalsetruefalse5truetruetrue-0.0001-0.0001[3]falsefalsefalsetruefalse6truetruetrue-0.0001-0.0001[3]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 falsefalseLess: Fee waiver/expense reimbursement0rr_FeeWaiverOrReimbursementOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[3]1truetruetrue-0.0001-0.0001falsefalsefalsetruefalse2truetruetrue-0.0001-0.0001falsefalsefalsetruefalse3truetruetrue-0.0001-0.0001falsefalsefalsetruefalse4truetruetrue0.00000.0000falsefalsefalsetruefalse5truetruetrue-0.0001-0.0001falsefalsefalsetruefalse6truetruetrue-0.0001-0.0001falsefalsefalsetruefalseOthernanafalsefalseLess: Fee waiver/expense reimbursement9falseRowprimaryElement*12false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.01650.0165[3]falsefalsefalsetruefalse2truetruetrue0.02400.0240[3]falsefalsefalsetruefalse3truetruetrue0.02400.0240[3]falsefalsefalsetruefalse4truetruetrue0.01270.0127[3]falsefalsefalsetruefalse5truetruetrue0.01900.0190[3]falsefalsefalsetruefalse6truetruetrue0.01650.0165[3]falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal annual fund operating expenses after fee waiver/expense reimbursement0rr_NetExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[3]1truetruetrue0.01650.0165falsefalsefalsetruefalse2truetruetrue0.02400.0240falsefalsefalsetruefalse3truetruetrue0.02400.0240falsefalsefalsetruefalse4truetruetrue0.01270.0127falsefalsefalsetruefalse5truetruetrue0.01900.0190falsefalsefalsetruefalse6truetruetrue0.01650.0165falsefalsefalsetruefalseOthernanafalsefalseTotal annual fund operating expenses after fee waiver/expense reimbursement1Other expenses are based on estimated amounts for the current fiscal year. 2Dividends on short sales are the dividends paid to the lenders of the borrowed securities. The expenses related to dividends on short sales will vary depending on whether the securities the Fund sells short pay dividends and on the size of any such dividends. Expenses also include borrowing costs paid to the broker in connection with borrowing the security to be sold short. The rate paid to brokers varies by security. 3The investment manager and its affiliates have contractually agreed to waive certain fees and to reimburse certain expenses (other than acquired fund fees and expenses, if any, and dividend expenses and borrowing costs on securities sold short) until July 31, 2012, unless sooner terminate at the sole discretion of the Fund's Board. Any amounts waived will not be reimbursed by the Fund. Under this agreement, net fund expenses (excluding acquired fund fees and expenses, if any, and dividend expenses and borrowings costs on securities sold short) will not exceed 1.48% for Class A, 2.23% for Class B, 2.23% for Class C, 1.16% for Class I, 1.73% for Class R and 1.48% for Class W.69Annual Fund Operating Expenses - Columbia Absolute Return Enhanced Multi-Strategy Fund (Class A, B, C, I, R and W Shares) Columbia Absolute Return Enhanced Multi-Strategy Fund Class A, B, C, I, R and W SharesUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*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.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ExamplefalsefalsefalsefalsefalseOtherxbrli: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.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem your shares at the end of those periods (unless otherwise noted). The Example also assumes that your investment has a 5% return each year and that the Fund&#8217;s operating expenses remain the same. The Example includes contractual commitments to waive fees and reimburse expenses expiring as indicated in the preceding table. Although your actual costs may be higher or lower, based on these assumptions your costs (based on estimated Fund expenses) would be: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 style="display:none;"&gt;~ http://columbiamanagement.com/role/ExpenseExampleColumbiaAbsoluteReturnEnhancedMultiStrategyFundClassABCIRAndWShares column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_DocumentInformationDocumentAxis compact cfst1352280_S000031732_Member * row dei_LegalEntityAxis compact cfst1352280_Prospectus_One_Member * ~&lt;/div&gt; </div>falsefalse<div> &lt;div style="display:none;"&gt;~ http://columbiamanagement.com/role/ExpenseExampleColumbiaAbsoluteReturnEnhancedMultiStrategyFundClassABCIRAndWShares column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_DocumentInformationDocumentAxis compact cfst1352280_S000031732_Member * row dei_LegalEntityAxis compact cfst1352280_Prospectus_One_Member * ~&lt;/div&gt; </div>truehttp://columbiamanagement.com/role/ExpenseExampleColumbiaAbsoluteReturnEnhancedMultiStrategyFundClassABCIRAndWSharesfalsefalse0200303 - Schedule - Example - Columbia Absolute Return Enhanced Multi-Strategy Fund (Class A, B, C, I, R and W Shares) {Transposed}truefalsefalse1falseColumnprimaryElement*4false0rr_ExpenseExampleByYearColumnNamerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00Class&#160;A (whether or not shares are redeemed)falsefalsefalsetruefalse2falsefalsefalse00Class&#160;B (if shares are redeemed)falsefalsefalsetruefalse3falsefalsefalse00Class&#160;C (if shares are redeemed)falsefalsefalsetruefalse4falsefalsefalse00Class&#160;I (whether or not shares are redeemed)falsefalsefalsetruefalse5falsefalsefalse00Class&#160;R (whether or not shares are redeemed)falsefalsefalsetruefalse6falsefalsefalse00Class&#160;W (whether or not shares are redeemed)falsefalsefalsetruefalseOtherus-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.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue733733falsefalsefalsetruefalse2truefalsetrue743743falsefalsefalsetruefalse3truefalsetrue343343falsefalsefalsetruefalse4truefalsetrue129129falsefalsefalsetruefalse5truefalsetrue193193falsefalsefalsetruefalse6truefalsetrue168168falsefalsefalsetruefalseMonetaryrr: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.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue10671067falsefalsefalsetruefalse2truefalsetrue10511051falsefalsefalsetruefalse3truefalsetrue751751falsefalsefalsetruefalse4truefalsetrue403403falsefalsefalsetruefalse5truefalsetrue599599falsefalsefalsetruefalse6truefalsetrue522522falsefalsefalsetruefalseMonetaryrr: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$1falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-04-01T00:00:002011-03-31T00:00:00falsefalseColumbia Absolute Return Enhanced Multi-Strategy Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicfst1352280_S000031732Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseClass A, B, C, I, R and W Sharesdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicfst1352280_ProspectusOneMemberdei_LegalEntityAxisexplicitMemberfalsefalseColumbia Absolute Return Enhanced Multi-Strategy Fund, Class Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldicfst1352280_C000098763Memberrr_ProspectusShareClassAxisexplicitMemberColumbia Absolute Return Enhanced 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Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse1 yearfalseUSDfalsefalse$3falseColumnprimaryElement*6false0rr_ExpenseExampleNoRedemptionYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue751751falsefalsefalsetruefalse2truefalsetrue751751falsefalsefalsetruefalseMonetaryrr: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 yearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-04-01T00:00:002011-03-31T00:00:00falsefalseColumbia Absolute Return Enhanced Multi-Strategy Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicfst1352280_S000031732Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseClass A, B, C, I, R and W Sharesdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicfst1352280_ProspectusOneMemberdei_LegalEntityAxisexplicitMemberfalsefalseColumbia Absolute Return Enhanced Multi-Strategy Fund, Class Brr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldicfst1352280_C000098764Memberrr_ProspectusShareClassAxisexplicitMemberColumbia Absolute Return Enhanced Multi-Strategy FundClass A, B, C, I, R and W SharesColumbia Absolute Return Enhanced Multi-Strategy Fund, Class BUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Class&#160;B (if shares are not redeemed)Class&#160;B (if shares are not redeemed)falsefalsefalsetruefalse2truefalsetrue243243falsefalsefalsetruefalse3truefalsetrue751751falsefalsefalsetruefalseOthernanafalsefalseColumbia Absolute Return Enhanced Multi-Strategy Fund, Class B2falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-04-01T00:00:002011-03-31T00:00:00falsefalseColumbia Absolute Return Enhanced Multi-Strategy Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicfst1352280_S000031732Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseClass A, B, C, I, R and W Sharesdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicfst1352280_ProspectusOneMemberdei_LegalEntityAxisexplicitMemberfalsefalseColumbia Absolute Return Enhanced Multi-Strategy Fund, Class Crr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldicfst1352280_C000098765Memberrr_ProspectusShareClassAxisexplicitMemberColumbia Absolute Return Enhanced Multi-Strategy FundClass A, B, C, I, R and W SharesColumbia Absolute Return Enhanced Multi-Strategy Fund, Class CUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Class&#160;C (if shares are not redeemed)Class&#160;C (if shares are not redeemed)falsefalsefalsetruefalse2truefalsetrue243243falsefalsefalsetruefalse3truefalsetrue751751falsefalsefalsetruefalseOthernanafalsefalseColumbia Absolute Return Enhanced Multi-Strategy Fund, Class C32Expense Example, No Redemption - Columbia Absolute Return Enhanced Multi-Strategy Fund (Class A, B, C, I, R and W Shares) Columbia Absolute Return Enhanced Multi-Strategy Fund Class A, B, C, I, R and W Shares (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*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]16false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Portfolio TurnoverfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose 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 5 -Subsection instructions falsefalsePortfolio Turnover [Heading]17false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#8220;turns over&#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. 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Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy [Heading]19false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund pursues positive (absolute) returns through a diversified portfolio reflecting multiple asset classes and strategies employed across different markets, while seeking to limit equity market risk (commonly referred to as beta) through various investment and hedging strategies. The Fund&#8217;s investments and strategies are expected to employ both long and short positions in foreign and domestic equities (including common stock, preferred stock and convertible securities), equity futures, index futures, swaps, fixed-income securities (including sovereign and quasi-sovereign debt obligations and fixed income futures), currency forwards and futures and other commodity-related investments, and exchange-traded funds (ETFs). Actual long and short exposures will vary over time.</p> <p>The Fund&#8217;s investment manager manages the Fund&#8217;s assets by employing a variety of strategies, techniques and practices that, in the aggregate, are designed to seek positive returns, with a low correlation to the performance of the broad equity markets.</p> <p>The Fund may invest without limit in foreign investments (including currencies), which may include investments in emerging markets, and in investments that are rated below investment-grade (e.g., junk bonds). The Fund may invest in fixed income securities of any maturity and does not seek to maintain a particular dollar-weighted average maturity. The investment manager may actively and frequently trade securities in the Fund&#8217;s portfolio to carry out its principal strategies.</p> <p>The investment manager may use derivatives such as futures (including currency, bond, index and interest rate futures), forward foreign currency contracts, forward rate agreements and interest rate swaps, in an effort to produce incremental earnings, to hedge existing positions, to increase market exposure and investment flexibility, and/or to increase credit exposure. Futures, forwards and swaps, in particular, are expected to be utilized to gain long and short investment (or credit) exposures to securities, indexes, interest rates or currencies (in lieu of purchasing or selling a security, currency or other instrument directly).</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]20false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PRINCIPAL RISKS OF INVESTING IN THE FUNDfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk [Heading]21false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>This Fund is designed for investors with above-average risk tolerance. Please remember that with any mutual fund investment you may lose money. Principal risks associated with an investment in the Fund include:</p> <p><b>Active Management Risk.</b> Due to its active management, the Fund could underperform other mutual funds with similar investment objectives.</p><p><b>Asset Allocation Risk.</b> The Fund&#8217;s asset and strategy allocation investment program is intended to reduce risk and volatility in the portfolio and to provide protection against a decline in the Fund&#8217;s assets. However, no assurance can be made that the investment manager&#8217;s allocation judgments will achieve these objectives.</p><p><b>Commodity-Related Investment Risk.</b> The value of commodities investments will generally be affected by overall market movements and factors specific to a particular industry or commodity, which may include weather, embargoes, tariffs, and economic health, political, international, regulatory and other developments. Commodities investments may also subject the Fund to Liquidity Risk and Counterparty Credit Risk. Subsidiaries making commodity-related investments will not be subject to U.S. laws (including securities laws) and their protections. Further, they will be subject to the laws of a foreign jurisdiction, which can be adversely affected by developments in that jurisdiction.</p> <p><b>Convertible Securities Risk.</b> Convertible securities are subject to the usual risks associated with debt securities, such as interest rate risk and credit risk. Convertible securities also react to changes in the value of the common stock into which they convert, and are thus subject to market risk. The Fund may be forced to convert a convertible security at an inopportune time, which may decrease the Fund&#8217;s return.</p> <p><b>Counterparty Credit Risk.</b> Counterparty credit risk is the risk that the Fund&#8217;s counterparty becomes bankrupt or otherwise fails to perform its obligations, and the Fund may obtain no or only limited recovery of its investments, and any recovery may be significantly delayed.</p> <p><b>Derivatives Risk &#8212; Forward Foreign Currency Contracts.</b> The Fund may enter into forward foreign currency contracts, which are types of derivative contracts, to buy or sell a country&#8217;s currency at a specific price on a specific date, usually 30, 60, or 90 days in the future for a specific exchange rate on a given date. Currency contracts may fall in value due to foreign currency value fluctuations. The Fund may enter into forward foreign currency contracts for investment purposes, for risk management (hedging) purposes, and to increase flexibility.</p> <p><b>Derivatives Risk &#8212; Forward Rate Agreements.</b> The Fund may enter into forward rate agreements for investment purposes, for risk management (hedging) purposes, and to increase flexibility. Under forward rate agreements, the buyer locks in an interest rate at a future settlement date. If the interest rate on the settlement date exceeds the lock rate, the buyer pays the seller the difference between the two rates. If the lock rate exceeds the interest rate on the settlement date, the seller pays the buyer the difference between the two rates. These transactions involve risks, including Counterparty Credit Risk, hedging risk and Interest Rate Risk.</p> <p><b>Derivatives Risk &#8212; Futures Contracts.</b> The Fund may enter into futures contracts, including currency, bond, index and interest rate futures for investment purposes, for risk management (hedging) purposes, and to increase flexibility. The volatility of futures contracts prices has been historically greater than the volatility of stocks and bonds. The liquidity of the futures markets depends on participants entering into off-setting transactions rather than making or taking delivery. To the extent participants decide to make or take delivery, liquidity in the futures market could be reduced. In addition, futures exchanges often impose a maximum permissible price movement on each futures contract for each trading session. The Fund may be disadvantaged if it is prohibited from executing a trade outside the daily permissible price movement.</p> <p><b>Derivatives Risk &#8212; Interest Rate Swaps.</b> The Fund may enter into interest rate swap agreements to obtain or preserve a desired return or spread at a lower cost than through a direct investment in an instrument that yields the desired return or spread. Interest rate swaps can be based on various measures of interest rates, including LIBOR, swap rates, treasury rates and other foreign interest rates. A swap agreement can increase or decrease the volatility of the Fund&#8217;s investments and its net asset value. Swaps can involve greater risks than direct investment in securities, because swaps may be leveraged (creating Leverage Risk) and are subject to Counterparty Credit Risk, pricing risk (i.e., swaps may be difficult to value) and Liquidity Risk (i.e., may not be possible for the Fund to liquidate a swap position at an advantageous time or price, which may result in significant losses).</p> <p><b>Exchange-Traded Fund (ETF) Risk.</b> ETFs are subject to, among other risks, tracking risk and passive investment risk. In addition, shareholders bear both their proportionate share of the Fund&#8217;s expenses and similar expenses incurred through ownership of the ETF.</p> <p><b>Foreign Currency Risk.</b> The Fund&#8217;s exposure to foreign currencies subjects the Fund to constantly changing exchange rates and the risk that those currencies will decline in value relative to the U.S. dollar, or, in the case of short positions, that the U.S. dollar will decline in value relative to the currency being sold forward. As a result, the Fund&#8217;s exposure to foreign currencies may reduce the returns of the Fund.</p> <p><b>Risk of Foreign/Emerging Markets Investing.</b> Investments in foreign securities involve certain risks not associated with investments in U.S. issuers. Foreign securities in the Fund&#8217;s portfolio subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social and other conditions or events occurring in the country, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices.</p> <p> Investments in emerging markets present greater risk of loss than a typical foreign security investment. Because of the less developed markets and economies and less mature governments and governmental institutions, the risks of investing in foreign securities can be intensified in the case of investments in issuers organized, domiciled or doing business in emerging markets.</p> <p><b>Highly Leveraged Transactions Risk.</b> Certain corporate loans and corporate debt securities involve refinancings, recapitalizations, mergers and acquisitions, and other financings for general corporate purposes. In such highly leveraged transactions, the borrower assumes large amounts of debt in order to have the financial resources to attempt to achieve its business objectives. Loans or securities that are part of highly leveraged transactions involve a greater risk (including default and bankruptcy) than other investments.</p> <p><b>High Yield Securities Risk.</b> The Fund&#8217;s investment in below-investment grade fixed-income securities (i.e., high-yield or junk bonds) exposes the Fund to a greater risk of loss of principal and income than a fund that invests solely or primarily in investment grade securities. High yield securities are considered to be predominantly speculative with respect to the issuers capacity to pay interest and repay principal.</p> <p><b>Inflation-Protected Securities Risk.</b> Inflation-protected debt securities tend to react to change in real interest rates (i.e., nominal interest rates minus the expected impact of inflation). In general, the price of such securities falls when real interest rates rise, and rises when real interest rates fall. Interest payments on these securities will vary and may be more volatile than interest paid on ordinary bonds. In periods of deflation, the Fund may have no income at all. Income earned by a shareholder depends on the amount of principal invested, and that principal will not grow with inflation unless the shareholder reinvests the portion of Fund distributions that comes from inflation adjustments.</p> <p><b>Interest Rate Risk.</b> Interest rate risk is the risk of losses attributable to changes in interest rates. When interest rates rise, prices of fixed-income securities generally fall. In general, the longer the maturity or duration of a fixed-income security, the greater its sensitivity to changes in interest rates. Interest rate changes also may increase prepayments of debt obligations.</p> <p><b>Issuer Credit Risk.</b> Issuer credit risk is the risk that fixed-income securities in the Fund&#8217;s portfolio will decline in price or fail to pay interest or repay principal when due because the issuer of the security defaults or otherwise becomes unable or unwilling to honor its financial obligations. Unrated securities held by the Fund present increased credit risk.</p> <p><b>Issuer Risk.</b> An issuer may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund&#8217;s performance.</p> <p><b>Leverage Risk.</b> Leverage occurs when the Fund increases its assets available for investment using borrowings, short sales, derivatives, or similar instruments or techniques. The use of leverage may make any change in the Fund&#8217;s net asset value (NAV) even greater and thus result in increased volatility of returns. There is no guarantee that a leveraging strategy will be successful.</p> <p><b>Liquidity Risk.</b> Liquidity risk is the risk associated with a lack of marketability of securities which may make it difficult or impossible to sell the security at desirable prices in order to minimize loss. The Fund may have to lower the selling price, sell other investments, or forego another, more appealing investment opportunity.</p> <p><b>Market Risk.</b> The market value of securities may fall, fail to rise, or fluctuate, sometimes rapidly and unpredictably. Market risk may affect a single issuer, sector of the economy, industry or the market as a whole.</p> <p><b>Portfolio Turnover Risk.</b> The Fund&#8217;s investment manager may actively and frequently trade securities in the Fund&#8217;s portfolio to carry out its investment strategies. A high portfolio turnover rate increases transaction costs, which may increase the Fund&#8217;s expenses. Frequent and active trading may also cause adverse tax consequences for investors in the Fund due to an increase in short-term capital gains.</p> <p><b>Prepayment and Extension Risk.</b> Prepayment and extension risk is the risk that a loan, bond or other security might be called or otherwise converted, prepaid or redeemed before maturity, and the portfolio managers may not be able to invest the proceeds in securities or loans providing as high a level of income, resulting in a reduced yield to the Fund. As interest rates rise or spreads widen, the likelihood of prepayment decreases. The portfolio managers may be unable to capitalize on securities with higher interest rates or wider spreads because the Fund&#8217;s investments are locked in at a lower rate for a longer period of time.</p> <p><b>Quantitative Model Risk.</b> Securities selected using quantitative methods may perform differently from the market as a whole. There can be no assurance that these methodologies will enable the Fund to achieve its objective.</p> <p><b>Short Selling Risk.</b> The Fund may make short sales, which involves selling a security the Fund does not own in anticipation that the security&#8217;s price will decline. Short positions introduce more risk to the Fund than long positions (where the Fund owns the security) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum price of the shorted security when purchased in the open market. Therefore, in theory, securities sold short have unlimited risk. The Fund&#8217;s use of short sales in effect &#8220;leverages&#8221; the Fund, as the Fund may use the cash proceeds from short sales to invest in additional long positions. Leverage potentially exposes the Fund to greater risks of loss due to unanticipated market movements, which may magnify losses and increase the volatility of returns. In addition, the Fund will incur additional expenses by engaging in short sales in the form of transaction costs, and interest and dividend expenses paid to the lender of the security.</p> <p><b>Small and Mid-Sized Company Risk.</b> Investments in small and medium size companies often involve greater risks than investments in larger, more established companies, including less predictable earnings and lack of experienced management, financial resources, product diversification and competitive strengths.</p> <p><b>Sovereign Debt Risk.</b> A sovereign debtor&#8217;s willingness or ability to repay principal and pay interest in a timely manner may be affected by a variety of factors, including its cash flow situation, the extent of its reserves, the availability of sufficient foreign exchange on the date a payment is due, the relative size of the debt service burden to the economy as a whole, the sovereign debtor&#8217;s policy toward international lenders, and the political constraints to which a sovereign debtor may be subject. Sovereign debt risk is increased for emerging market issuers.</p> <p><b>U.S. Government Obligations Risk.</b> U.S. Treasury obligations are backed by the &#8220;full faith and credit&#8221; of the U.S. government and generally have negligible credit risk. Securities issued or guaranteed by federal agencies or authorities and U.S. government-sponsored instrumentalities or enterprises may or may not be backed by the full faith and credit of the U.S. government. The Fund may be subject to such risk to the extent it invests in securities issued or guaranteed by federal agencies or authorities and U.S. government-sponsored instrumentalities or enterprises.</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]22false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PAST PERFORMANCEfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table [Heading]23false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund is new as of the date of this prospectus and therefore performance information is not available.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]122Risk/Return Summary - Columbia Absolute Return Enhanced Multi-Strategy Fund (Class A, B, C, I, R and W Shares) (Columbia Absolute Return Enhanced Multi-Strategy Fund, Class A, B, C, I, R and W Shares)UnKnownUnKnownUnKnownUnKnownfalsetrue