485BPOS

As filed with the Securities and Exchange Commission on July 18, 2013

Registration No. 333-89661; 811-09645

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

x

Pre-Effective Amendment No.

¨

Post-Effective Amendment No. 120

x

REGISTRATION STATEMENT

UNDER

THE INVESTMENT COMPANY ACT OF 1940

x

Amendment No. 121

(Check appropriate box or boxes)

COLUMBIA FUNDS SERIES TRUST

(Exact Name of Registrant as specified in Charter)

50606 Ameriprise Financial Center

Minneapolis, MN 55474

(Address of Principal Executive Offices, including Zip Code)

Registrant’s Telephone Number, including Area Code: (800) 321-7854

Christopher O. Petersen, Esq.

c/o Columbia Management Investment Advisers, LLC

225 Franklin Street

Boston, MA 02110

(Name and Address of Agent for Service)

It is proposed that this filing will become effective (check appropriate box):

x Immediately upon filing pursuant to paragraph (b)

¨ on (date) pursuant to paragraph (b)

¨ 60 days after filing pursuant to paragraph (a)(1)

¨ on (date) pursuant to paragraph (a)(1)

¨ 75 days after filing pursuant to paragraph (a)(2)

¨ on (date) pursuant to paragraph (a)(2) of Rule 485.

If appropriate, check the following box:

¨ this post-effective amendment designates a new effective date for a previously filed post-effective amendment.

This Post-Effective Amendment relates solely to the Registrant’s Columbia Convertible Securities Fund, Columbia International Value Fund, Columbia Large Cap Core Fund, Columbia Large Cap Enhanced Core Fund, Columbia Large Cap Index Fund, Columbia Marsico 21^st Century Fund, Columbia Marsico Focused Equities Fund, Columbia Marsico Global Fund, Columbia Marsico Growth Fund, Columbia Marsico International Opportunities Fund, Columbia Mid Cap Index Fund, Columbia Mid Cap Value Fund, Columbia Multi-Advisor International Equity Fund, Columbia Overseas Value Fund, Columbia Small Cap Index Fund and Columbia Small Cap Value Fund II series. Information contained in the Registrant’s Statement relating to any other series of the Registrant is neither amended nor superseded hereby.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant, Columbia Funds Series Trust, certifies that it meets all the requirements for effectiveness of this Registration Statement under Rule 485(b) under the Securities Act of 1933 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, duly authorized, in the City of Boston, and The Commonwealth of Massachusetts on the 18th day of July, 2013.

COLUMBIA FUNDS SERIES TRUST
By:	/s/ J. Kevin Connaughton
Name: Title:	J. Kevin Connaughton President

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed below by the following persons in the capacities and on the date indicated:

SIGNATURES	TITLE	DATE
/s/ J. Kevin Connaughton J. Kevin Connaughton	President (Principal Executive Officer)	July 18, 2013
/s/ Michael G. Clarke Michael G. Clarke	Chief Financial Officer (Principal Financial Officer)	July 18, 2013
/s/ Joseph F. DiMaria Joseph F. DiMaria	Chief Accounting Officer (Principal Accounting Officer)	July 18, 2013
/s/ Stephen R. Lewis, Jr.* Stephen R. Lewis, Jr.	Chairman of the Board	July 18, 2013
/s/ Kathleen A. Blatz* Kathleen A. Blatz	Trustee	July 18, 2013
/s/ Edward J. Boudreau, Jr.* Edward J. Boudreau, Jr.	Trustee	July 18, 2013
/s/ Pamela G. Carlton* Pamela G. Carlton	Trustee	July 18, 2013
/s/ William P. Carmichael* William P. Carmichael	Trustee	July 18, 2013

/s/ Patricia M. Flynn* Patricia M. Flynn	Trustee	July 18, 2013
/s/ William A. Hawkins* William A. Hawkins	Trustee	July 18, 2013
/s/ R. Glenn Hilliard* R. Glenn Hilliard	Trustee	July 18, 2013
/s/ Catherine James Paglia* Catherine James Paglia	Trustee	July 18, 2013
/s/ Leroy C. Richie* Leroy C. Richie	Trustee	July 18, 2013
/s/ Anthony M. Santomero* Anthony M. Santomero	Trustee	July 18, 2013
/s/ Minor M. Shaw* Minor M. Shaw	Trustee	July 18, 2013
/s/ Alison Taunton-Rigby* Alison Taunton-Rigby	Trustee	July 18, 2013
/s/ William F. Truscott* William F. Truscott	Trustee	July 18, 2013

*By:	/s/ Ryan C. Larrenaga
	Ryan C. Larrenaga** Attorney-in-Fact July 18, 2013

** Executed by Ryan C. Larrenaga on behalf of each of the Trustees pursuant to a Power of Attorney dated April 17, 2013 and incorporated by reference to Post-Effective Amendment No. 116 to the Registration Statement of the Registrant on Form N-1A, filed with the Commission on May 2, 2013.

EXHIBIT INDEX

Exhibit No.	Description
EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Taxonomy Extension Schema Document
EX-101.CAL	XBRL Taxonomy Extension Calculation Linkbase
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-101.LAB	XBRL Taxonomy Extension Labels Linkbase
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	COLUMBIA FUNDS SERIES TRUST
Prospectus Date	rr_ProspectusDate	Jul. 01, 2013
Columbia International Value Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Summary of the Fund
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Columbia International Value Fund (the Fund) seeks long-term capital appreciation.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 19 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund may pay 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 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 13% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	13.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 19 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 50,000
Expenses Represent Both Master and Feeder [Text]	rr_ExpensesRepresentBothMasterAndFeeder	These fees and expenses and the example below reflect the expenses of both the Fund and Columbia International Value Master Portfolio (the Master Portfolio).
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	other expenses for Class R4 and Class R5 are based on estimated amounts for the Fund’s current fiscal year.
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Management fees have been restated to reflect contractual changes to the investment advisory fee rates. Other expenses for Class A, Class B, Class C, Class I, Class R and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that: you invest $10,000 in the applicable class of Fund shares for the periods indicated, your investment has a 5% return each year, and the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund invests all or substantially all of its assets in Columbia International Value Master Portfolio (the Master Portfolio). The Master Portfolio has the same investment objective as the Fund. Under normal circumstances, the Master Portfolio invests at least 80% of total assets (including the amount of any borrowings for investment purposes) in equity securities of foreign companies that have market capitalizations of more than $1 billion at the time of purchase. The Master Portfolio typically invests in foreign companies in at least three countries, other than the United States, at any one time and may invest in emerging markets. The Master Portfolio may invest directly in foreign securities or indirectly through closed-end investment companies and depositary receipts. The Master Portfolio may invest in currency forwards, futures and options for both hedging and non-hedging purposes, including, for example, to seek to enhance returns or, in certain unusual circumstances, when holding a derivative is deemed preferable to holding the underlying asset. The Master Portfolio has the following limits on its investments, which are applied at the time an investment is made. The Master Portfolio: normally invests no more than 5% of its total assets in a single security; typically invests up to the greater of (i) 20% of its total assets in a single country or industry or (ii) 150% of the weighting of a single country or industry in the MSCI Europe, Australasia, Far East (MSCI EAFE) Value Index (limited to less than 25% of its total assets in a single industry, other than U.S. Government obligations); and generally may not invest more than 20% of its total assets in emerging markets. The investment manager combines fundamental and quantitative analysis with risk management in identifying value opportunities and constructing the Master Portfolio.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down. Depositary Receipts Risks. Depositary receipts are receipts issued by a bank or trust company and evidence of ownership of underlying securities issued by foreign companies. Some foreign securities are traded in the form of American Depositary Receipts (ADRs). Depositary receipts involve the risks of other investments in foreign securities, including 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. In addition, ADR holders may not have all the legal rights of shareholders and may experience difficulty in receiving shareholder communications. Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund. Derivatives Risk/Forward Foreign Currency Contracts Risk. These instruments are a type of derivative contract whereby the Fund may agree to buy or sell a country’s or region’s currency at a specific price on a specific date in the future. These contracts may fall in value due to foreign market downswings or foreign currency value fluctuations. The Fund’s investment or hedging strategies may not achieve their objective. Investment in these instruments also subjects the Fund to counterparty risk. Derivatives Risk/Futures Contracts Risk. The loss that may be incurred in entering into futures contracts may exceed the amount of the premium paid and may be potentially unlimited. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value (NAV). Additionally, as a result of the low collateral deposits normally involved in futures trading, a relatively small price movement in a futures contract may result in substantial losses to the Fund. Futures contracts may be illiquid. Furthermore, exchanges may limit fluctuations in futures contract prices during a trading session by imposing a maximum permissible price movement on each futures contract. The Fund may be disadvantaged if it is prohibited from executing a trade outside the daily permissible price movement. Futures contracts executed on foreign exchanges may not provide the same protection as U.S. exchanges. These transactions involve additional risks, including counterparty risk, hedging risk and pricing risk. Derivatives Risk/Options Risk. If the Fund sells a put option, there is a risk that the Fund may be required to buy the underlying asset at a disadvantageous price. If the Fund sells a call option, there is a risk that the Fund may be required to sell the underlying asset at a disadvantageous price, and if the call option sold is not covered (for example, by owning the underlying asset), the Fund's losses are potentially unlimited. These transactions involve other risks, including counterparty risk and hedging risk. Emerging Market Securities Risk. Securities issued by foreign governments or companies in emerging market countries are more likely to have greater exposure to the risks of investing in foreign securities that are described in Foreign Securities Risk. In addition, emerging market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Their economies are usually less mature and their securities markets are typically less developed with more limited trading activity (i.e., lower trading volumes and less liquidity) than more developed countries. Emerging market securities tend to be more volatile than securities in more developed markets. Many emerging market countries are heavily dependent on international trade and have fewer trading partners, which makes them more sensitive to world commodity prices and economic downturns in other countries, and some have a higher risk of currency devaluations. Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar. Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies. Investing in Other Funds Risk. The Fund’s investment in other funds (affiliated and/or unaffiliated funds, including exchange-traded funds (ETFs)) subjects the Fund to the investment performance (positive or negative) and risks of these underlying funds in direct proportion to the Fund’s investment therein. The performance of underlying funds could be adversely affected if other entities that invest in the same underlying funds make relatively large investments or redemptions in such underlying funds. The Fund, and its shareholders, indirectly bear a portion of the expenses of any funds in which the Fund invests. Because the expenses and costs of a fund are shared by its investors, redemptions by other investors in the fund could result in decreased economies of scale and increased operating expenses for such fund. The Investment Manager may have potential conflicts of interest in selecting affiliated underlying funds for investment by the Fund because the fees paid to it by some underlying funds are higher than the fees paid by other underlying funds, as well as a potential conflict in selecting affiliated funds over unaffiliated funds. Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors. Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities. Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within an economic sector, including the financial services sector. Companies in the same economic sector may be similarly affected by economic, regulatory, political or market events or conditions, making the Fund more vulnerable to unfavorable developments in that economic sector than funds that invest more broadly. The more a fund diversifies its investments, the more it spreads risk and potentially reduces the risks of loss and volatility. Because the Fund’s portfolio managers may invest significantly in the financial services sector, the Fund may be more susceptible to the particular risks of the financial services sector than if the Fund were invested in a wider variety of companies in unrelated industries. Small- and Mid-Cap Company Securities Risk. Investments in small- and mid-capitalization companies (small- and mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small- and mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small- and mid-cap companies may be less liquid and more volatile than the securities of larger companies. Value Securities Risk. Value securities are securities of companies that may have experienced, for example, adverse business, industry or other developments or may be subject to special risks that have caused the securities to be out of favor and, in turn, potentially undervalued. The market value of a portfolio security may not meet the portfolio manager's perceived value assessment of that security, or may decline in price, even though the portfolio manager(s) believe(s) the securities are already undervalued. There is also a risk that it may take longer than expected for the value of these investments to rise to the portfolio manager’s perceived value. In addition, value securities, at times, may not perform as well as growth securities or the stock market in general, and may be out of favor with investors for varying periods of time.
Risk Lose Money [Text]	rr_RiskLoseMoney	There is no assurance that the Fund will achieve its investment objective and you may lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance. The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (without applicable sales charges and adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities. The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	800.345.6611
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	columbiamanagement.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Year by Year Total Return (%) as of December 31 Each Year
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best and Worst Quarterly Returns During the Period Shown in the Bar Chart Best                              2nd Quarter 2003                            26.68% Worst                           3rd Quarter 2011                            -17.52%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs).
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	The after-tax returns are shown only for Class A shares and will vary for other share classes.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares.
Columbia International Value Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	5.75%
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[1]
Management fees	rr_ManagementFeesOverAssets	0.76%	[2],[3]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%	[2]
Other expenses	rr_OtherExpensesOverAssets	0.37%	[2],[4]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.38%	[2]
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, charged as follows: 1.00% CDSC if redeemed within 12 months of purchase, and 0.50% CDSC if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	707
3 years	rr_ExpenseExampleYear03	987
5 years	rr_ExpenseExampleYear05	1,287
10 years	rr_ExpenseExampleYear10	2,137
1 year	rr_ExpenseExampleNoRedemptionYear01	707
3 years	rr_ExpenseExampleNoRedemptionYear03	987
5 years	rr_ExpenseExampleNoRedemptionYear05	1,287
10 years	rr_ExpenseExampleNoRedemptionYear10	2,137
2003	rr_AnnualReturn2003	50.45%	[5]
2004	rr_AnnualReturn2004	24.17%	[5]
2005	rr_AnnualReturn2005	10.16%	[5]
2006	rr_AnnualReturn2006	28.26%	[5]
2007	rr_AnnualReturn2007	6.72%	[5]
2008	rr_AnnualReturn2008	(35.62%)	[5]
2009	rr_AnnualReturn2009	22.30%	[5]
2010	rr_AnnualReturn2010	2.43%	[5]
2011	rr_AnnualReturn2011	(10.90%)	[5]
2012	rr_AnnualReturn2012	10.01%	[5]
Year to Date Return, Label	rr_YearToDateReturnLabel	Year to Date return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	4.18%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2003
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	26.68%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2011
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(17.52%)
1 Year	rr_AverageAnnualReturnYear01	3.69%
5 Years	rr_AverageAnnualReturnYear05	(5.72%)
10 Years	rr_AverageAnnualReturnYear10	7.69%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 27, 1995
Columbia International Value Fund | Class B
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	5.00%	[6]
Management fees	rr_ManagementFeesOverAssets	0.76%	[2],[3]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%	[2]
Other expenses	rr_OtherExpensesOverAssets	0.37%	[2],[4]
Total annual Fund operating expenses	rr_ExpensesOverAssets	2.13%	[2]
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge decreases over time.
1 year	rr_ExpenseExampleYear01	716
3 years	rr_ExpenseExampleYear03	967
5 years	rr_ExpenseExampleYear05	1,344
10 years	rr_ExpenseExampleYear10	2,271
1 year	rr_ExpenseExampleNoRedemptionYear01	216
3 years	rr_ExpenseExampleNoRedemptionYear03	667
5 years	rr_ExpenseExampleNoRedemptionYear05	1,144
10 years	rr_ExpenseExampleNoRedemptionYear10	2,271
1 Year	rr_AverageAnnualReturnYear01	4.18%
5 Years	rr_AverageAnnualReturnYear05	(5.58%)
10 Years	rr_AverageAnnualReturnYear10	7.54%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	May 22, 1998
Columbia International Value Fund | Class C
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[7]
Management fees	rr_ManagementFeesOverAssets	0.76%	[2],[3]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%	[2]
Other expenses	rr_OtherExpensesOverAssets	0.37%	[2],[4]
Total annual Fund operating expenses	rr_ExpensesOverAssets	2.13%	[2]
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge applies to redemptions within one year of purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	316
3 years	rr_ExpenseExampleYear03	667
5 years	rr_ExpenseExampleYear05	1,144
10 years	rr_ExpenseExampleYear10	2,462
1 year	rr_ExpenseExampleNoRedemptionYear01	216
3 years	rr_ExpenseExampleNoRedemptionYear03	667
5 years	rr_ExpenseExampleNoRedemptionYear05	1,144
10 years	rr_ExpenseExampleNoRedemptionYear10	2,462
1 Year	rr_AverageAnnualReturnYear01	8.21%
5 Years	rr_AverageAnnualReturnYear05	(5.32%)
10 Years	rr_AverageAnnualReturnYear10	7.52%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 15, 1998
Columbia International Value Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%	[2],[3]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none	[2]
Other expenses	rr_OtherExpensesOverAssets	0.17%	[2],[4]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.93%	[2]
1 year	rr_ExpenseExampleYear01	95
3 years	rr_ExpenseExampleYear03	296
5 years	rr_ExpenseExampleYear05	515
10 years	rr_ExpenseExampleYear10	1,143
1 year	rr_ExpenseExampleNoRedemptionYear01	95
3 years	rr_ExpenseExampleNoRedemptionYear03	296
5 years	rr_ExpenseExampleNoRedemptionYear05	515
10 years	rr_ExpenseExampleNoRedemptionYear10	1,143
1 Year	rr_AverageAnnualReturnYear01	8.70%
5 Years	rr_AverageAnnualReturnYear05	(5.13%)
10 Years	rr_AverageAnnualReturnYear10	8.03%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 27, 2010
Columbia International Value Fund | Class R
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%	[2],[3]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.50%	[2]
Other expenses	rr_OtherExpensesOverAssets	0.37%	[2],[4]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.63%	[2]
1 year	rr_ExpenseExampleYear01	166
3 years	rr_ExpenseExampleYear03	514
5 years	rr_ExpenseExampleYear05	887
10 years	rr_ExpenseExampleYear10	1,933
1 year	rr_ExpenseExampleNoRedemptionYear01	166
3 years	rr_ExpenseExampleNoRedemptionYear03	514
5 years	rr_ExpenseExampleNoRedemptionYear05	887
10 years	rr_ExpenseExampleNoRedemptionYear10	1,933
1 Year	rr_AverageAnnualReturnYear01	9.64%
5 Years	rr_AverageAnnualReturnYear05	(4.87%)
10 Years	rr_AverageAnnualReturnYear10	8.02%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 27, 2010
Columbia International Value Fund | Class R4
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%	[2],[3]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none	[2]
Other expenses	rr_OtherExpensesOverAssets	0.37%	[2],[4]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.13%	[2]
1 year	rr_ExpenseExampleYear01	115
3 years	rr_ExpenseExampleYear03	359
5 years	rr_ExpenseExampleYear05	622
10 years	rr_ExpenseExampleYear10	1,375
1 year	rr_ExpenseExampleNoRedemptionYear01	115
3 years	rr_ExpenseExampleNoRedemptionYear03	359
5 years	rr_ExpenseExampleNoRedemptionYear05	622
10 years	rr_ExpenseExampleNoRedemptionYear10	1,375
1 Year	rr_AverageAnnualReturnYear01	10.05%
5 Years	rr_AverageAnnualReturnYear05	(4.59%)
10 Years	rr_AverageAnnualReturnYear10	8.34%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia International Value Fund | Class R5
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%	[2],[3]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none	[2]
Other expenses	rr_OtherExpensesOverAssets	0.22%	[2],[4]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.98%	[2]
1 year	rr_ExpenseExampleYear01	100
3 years	rr_ExpenseExampleYear03	312
5 years	rr_ExpenseExampleYear05	542
10 years	rr_ExpenseExampleYear10	1,201
1 year	rr_ExpenseExampleNoRedemptionYear01	100
3 years	rr_ExpenseExampleNoRedemptionYear03	312
5 years	rr_ExpenseExampleNoRedemptionYear05	542
10 years	rr_ExpenseExampleNoRedemptionYear10	1,201
1 Year	rr_AverageAnnualReturnYear01	10.05%
5 Years	rr_AverageAnnualReturnYear05	(4.59%)
10 Years	rr_AverageAnnualReturnYear10	8.34%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia International Value Fund | Class Z
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%	[2],[3]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none	[2]
Other expenses	rr_OtherExpensesOverAssets	0.37%	[2],[4]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.13%	[2]
1 year	rr_ExpenseExampleYear01	115
3 years	rr_ExpenseExampleYear03	359
5 years	rr_ExpenseExampleYear05	622
10 years	rr_ExpenseExampleYear10	1,375
1 year	rr_ExpenseExampleNoRedemptionYear01	115
3 years	rr_ExpenseExampleNoRedemptionYear03	359
5 years	rr_ExpenseExampleNoRedemptionYear05	622
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 1,375
1 Year	rr_AverageAnnualReturnYear01	10.26%
5 Years	rr_AverageAnnualReturnYear05	(4.36%)
10 Years	rr_AverageAnnualReturnYear10	8.60%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 27, 1995
Columbia International Value Fund | returns after taxes on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	3.09%
5 Years	rr_AverageAnnualReturnYear05	(6.32%)
10 Years	rr_AverageAnnualReturnYear10	6.53%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 27, 1995
Columbia International Value Fund | returns after taxes on distributions and sale of Fund shares | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	3.14%
5 Years	rr_AverageAnnualReturnYear05	(4.66%)
10 Years	rr_AverageAnnualReturnYear10	6.98%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 27, 1995
Columbia International Value Fund | MSCI EAFE Value Index (Net) (reflects reinvested dividends net of withholding taxes but reflects no deductions for fees, expenses or other taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	17.69%
5 Years	rr_AverageAnnualReturnYear05	(4.34%)
10 Years	rr_AverageAnnualReturnYear10	8.57%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, charged as follows: 1.00% CDSC if redeemed within 12 months of purchase, and 0.50% CDSC if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] These fees and expenses and the example below reflect the expenses of both the Fund and Columbia International Value Master Portfolio (the Master Portfolio).

[3] Management fees have been restated to reflect contractual changes to the investment advisory fee rates.

[4] Other expenses for Class A, Class B, Class C, Class I, Class R and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R4 and Class R5 are based on estimated amounts for the Fund's current fiscal year.

[5] Year to Date return as of March 31, 2013: 4.18%

[6] This charge decreases over time.

[7] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

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Columbia International Value Fund

Summary of the Fund

Investment Objective

Columbia International Value Fund (the Fund) seeks long-term capital appreciation.

Fees and Expenses of the Fund

This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 19 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Columbia International Value Fund	Class A		Class B		Class C		Class I	Class R	Class R4	Class R5	Class Z
Maximum sales charge (load) imposed on purchases (as a % of offering price)	5.75%		none		none		none	none	none	none	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	1.00%	[1]	5.00%	[2]	1.00%	[3]	none	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Columbia International Value Fund		Class A	Class B	Class C	Class I	Class R	Class R4	Class R5	Class Z
Management fees	[1][2]	0.76%	0.76%	0.76%	0.76%	0.76%	0.76%	0.76%	0.76%
Distribution and/or service (12b-1) fees	[1]	0.25%	1.00%	1.00%	none	0.50%	none	none	none
Other expenses	[1][3]	0.37%	0.37%	0.37%	0.17%	0.37%	0.37%	0.22%	0.37%
Total annual Fund operating expenses	[1]	1.38%	2.13%	2.13%	0.93%	1.63%	1.13%	0.98%	1.13%

Example

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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that:

• you invest $10,000 in the applicable class of Fund shares for the periods indicated,

• your investment has a 5% return each year, and

• the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above.

Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:

Expense Example Columbia International Value Fund (USD $)	1 year	3 years	5 years	10 years
Class A	707	987	1,287	2,137
Class B	716	967	1,344	2,271
Class C	316	667	1,144	2,462
Class I	95	296	515	1,143
Class R	166	514	887	1,933
Class R4	115	359	622	1,375
Class R5	100	312	542	1,201
Class Z	115	359	622	1,375

Expense Example, No Redemption Columbia International Value Fund (USD $)	1 year	3 years	5 years	10 years
Class A	707	987	1,287	2,137
Class B	216	667	1,144	2,271
Class C	216	667	1,144	2,462
Class I	95	296	515	1,143
Class R	166	514	887	1,933
Class R4	115	359	622	1,375
Class R5	100	312	542	1,201
Class Z	115	359	622	1,375

Portfolio Turnover

The Fund may pay 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 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 13% of the average value of its portfolio.

Principal Investment Strategies

The Fund invests all or substantially all of its assets in Columbia International Value Master Portfolio (the Master Portfolio). The Master Portfolio has the same investment objective as the Fund.

Under normal circumstances, the Master Portfolio invests at least 80% of total assets (including the amount of any borrowings for investment purposes) in equity securities of foreign companies that have market capitalizations of more than $1 billion at the time of purchase. The Master Portfolio typically invests in foreign companies in at least three countries, other than the United States, at any one time and may invest in emerging markets. The Master Portfolio may invest directly in foreign securities or indirectly through closed-end investment companies and depositary receipts.

The Master Portfolio may invest in currency forwards, futures and options for both hedging and non-hedging purposes, including, for example, to seek to enhance returns or, in certain unusual circumstances, when holding a derivative is deemed preferable to holding the underlying asset.

The Master Portfolio has the following limits on its investments, which are applied at the time an investment is made. The Master Portfolio:

• normally invests no more than 5% of its total assets in a single security;

• typically invests up to the greater of (i) 20% of its total assets in a single country or industry or (ii) 150% of the weighting of a single country or industry in the MSCI Europe, Australasia, Far East (MSCI EAFE) Value Index (limited to less than 25% of its total assets in a single industry, other than U.S. Government obligations); and

• generally may not invest more than 20% of its total assets in emerging markets.

The investment manager combines fundamental and quantitative analysis with risk management in identifying value opportunities and constructing the Master Portfolio.

Principal Risks

An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down.

Depositary Receipts Risks. Depositary receipts are receipts issued by a bank or trust company and evidence of ownership of underlying securities issued by foreign companies. Some foreign securities are traded in the form of American Depositary Receipts (ADRs). Depositary receipts involve the risks of other investments in foreign securities, including 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. In addition, ADR holders may not have all the legal rights of shareholders and may experience difficulty in receiving shareholder communications.

Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund.

Derivatives Risk/Forward Foreign Currency Contracts Risk. These instruments are a type of derivative contract whereby the Fund may agree to buy or sell a country’s or region’s currency at a specific price on a specific date in the future. These contracts may fall in value due to foreign market downswings or foreign currency value fluctuations. The Fund’s investment or hedging strategies may not achieve their objective. Investment in these instruments also subjects the Fund to counterparty risk.

Derivatives Risk/Futures Contracts Risk. The loss that may be incurred in entering into futures contracts may exceed the amount of the premium paid and may be potentially unlimited. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value (NAV). Additionally, as a result of the low collateral deposits normally involved in futures trading, a relatively small price movement in a futures contract may result in substantial losses to the Fund. Futures contracts may be illiquid. Furthermore, exchanges may limit fluctuations in futures contract prices during a trading session by imposing a maximum permissible price movement on each futures contract. The Fund may be disadvantaged if it is prohibited from executing a trade outside the daily permissible price movement. Futures contracts executed on foreign exchanges may not provide the same protection as U.S. exchanges. These transactions involve additional risks, including counterparty risk, hedging risk and pricing risk.

Derivatives Risk/Options Risk. If the Fund sells a put option, there is a risk that the Fund may be required to buy the underlying asset at a disadvantageous price. If the Fund sells a call option, there is a risk that the Fund may be required to sell the underlying asset at a disadvantageous price, and if the call option sold is not covered (for example, by owning the underlying asset), the Fund's losses are potentially unlimited. These transactions involve other risks, including counterparty risk and hedging risk.

Emerging Market Securities Risk. Securities issued by foreign governments or companies in emerging market countries are more likely to have greater exposure to the risks of investing in foreign securities that are described in Foreign Securities Risk. In addition, emerging market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Their economies are usually less mature and their securities markets are typically less developed with more limited trading activity (i.e., lower trading volumes and less liquidity) than more developed countries. Emerging market securities tend to be more volatile than securities in more developed markets. Many emerging market countries are heavily dependent on international trade and have fewer trading partners, which makes them more sensitive to world commodity prices and economic downturns in other countries, and some have a higher risk of currency devaluations.

Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar.

Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies.

Investing in Other Funds Risk. The Fund’s investment in other funds (affiliated and/or unaffiliated funds, including exchange-traded funds (ETFs)) subjects the Fund to the investment performance (positive or negative) and risks of these underlying funds in direct proportion to the Fund’s investment therein. The performance of underlying funds could be adversely affected if other entities that invest in the same underlying funds make relatively large investments or redemptions in such underlying funds. The Fund, and its shareholders, indirectly bear a portion of the expenses of any funds in which the Fund invests. Because the expenses and costs of a fund are shared by its investors, redemptions by other investors in the fund could result in decreased economies of scale and increased operating expenses for such fund. The Investment Manager may have potential conflicts of interest in selecting affiliated underlying funds for investment by the Fund because the fees paid to it by some underlying funds are higher than the fees paid by other underlying funds, as well as a potential conflict in selecting affiliated funds over unaffiliated funds.

Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors.

Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities.

Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within an economic sector, including the financial services sector. Companies in the same economic sector may be similarly affected by economic, regulatory, political or market events or conditions, making the Fund more vulnerable to unfavorable developments in that economic sector than funds that invest more broadly. The more a fund diversifies its investments, the more it spreads risk and potentially reduces the risks of loss and volatility. Because the Fund’s portfolio managers may invest significantly in the financial services sector, the Fund may be more susceptible to the particular risks of the financial services sector than if the Fund were invested in a wider variety of companies in unrelated industries.

Small- and Mid-Cap Company Securities Risk. Investments in small- and mid-capitalization companies (small- and mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small- and mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small- and mid-cap companies may be less liquid and more volatile than the securities of larger companies.

Value Securities Risk. Value securities are securities of companies that may have experienced, for example, adverse business, industry or other developments or may be subject to special risks that have caused the securities to be out of favor and, in turn, potentially undervalued. The market value of a portfolio security may not meet the portfolio manager's perceived value assessment of that security, or may decline in price, even though the portfolio manager(s) believe(s) the securities are already undervalued. There is also a risk that it may take longer than expected for the value of these investments to rise to the portfolio manager’s perceived value. In addition, value securities, at times, may not perform as well as growth securities or the stock market in general, and may be out of favor with investors for varying periods of time.

Performance Information

The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.

The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (without applicable sales charges and adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities.

The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public.

The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.

Year by Year Total Return (%)
as of December 31 Each Year

Best and Worst Quarterly Returns
During the Period Shown in the Bar Chart

Best                              2nd Quarter 2003                            26.68%


Worst                           3rd Quarter 2011                            -17.52%

Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)

Average Annual Total Returns Columbia International Value Fund	Share Class Inception Date	1 Year	5 Years	10 Years
Class A shares	Dec. 27, 1995	3.69%	(5.72%)	7.69%
Class A shares returns after taxes on distributions	Dec. 27, 1995	3.09%	(6.32%)	6.53%
Class A shares returns after taxes on distributions and sale of Fund shares	Dec. 27, 1995	3.14%	(4.66%)	6.98%
Class B shares	May 22, 1998	4.18%	(5.58%)	7.54%
Class C shares	Jun. 15, 1998	8.21%	(5.32%)	7.52%
Class I shares	Sep. 27, 2010	8.70%	(5.13%)	8.03%
Class R shares	Sep. 27, 2010	9.64%	(4.87%)	8.02%
Class R4 shares	Nov. 08, 2012	10.05%	(4.59%)	8.34%
Class R5 shares	Nov. 08, 2012	10.05%	(4.59%)	8.34%
Class Z shares	Dec. 27, 1995	10.26%	(4.36%)	8.60%
MSCI EAFE Value Index (Net) (reflects reinvested dividends net of withholding taxes but reflects no deductions for fees, expenses or other taxes)		17.69%	(4.34%)	8.57%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, charged as follows: 1.00% CDSC if redeemed within 12 months of purchase, and 0.50% CDSC if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] This charge decreases over time.

[3] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

[1] These fees and expenses and the example below reflect the expenses of both the Fund and Columbia International Value Master Portfolio (the Master Portfolio).

[2] Management fees have been restated to reflect contractual changes to the investment advisory fee rates.

[3] Other expenses for Class A, Class B, Class C, Class I, Class R and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R4 and Class R5 are based on estimated amounts for the Fund's current fiscal year.

[1] Year to Date return as of March 31, 2013: 4.18%

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Columbia Large Cap Core Fund

Summary of the Fund

Investment Objective

Columbia Large Cap Core Fund (the Fund) seeks long-term capital appreciation.

Fees and Expenses of the Fund

This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 18 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Columbia Large Cap Core Fund	Class A		Class B		Class C		Class I	Class R5	Class W	Class Z
Maximum sales charge (load) imposed on purchases (as a % of offering price)	5.75%		none		none		none	none	none	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	1.00%	[1]	5.00%	[2]	1.00%	[3]	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Columbia Large Cap Core Fund		Class A	Class B	Class C	Class I	Class R5	Class W	Class Z
Management fees		0.69%	0.69%	0.69%	0.69%	0.69%	0.69%	0.69%
Distribution and/or service (12b-1) fees		0.25%	1.00%	1.00%	none	none	0.25%	none
Other expenses	[1]	0.29%	0.29%	0.29%	0.10%	0.15%	0.29%	0.29%
Total annual Fund operating expenses		1.23%	1.98%	1.98%	0.79%	0.84%	1.23%	0.98%
Less: Fee waivers and/or expense reimbursements	[2]	(0.05%)	(0.05%)	(0.05%)	(0.01%)	(0.01%)	(0.05%)	(0.05%)
Total annual Fund operating expenses after fee waivers and/or reimbursements		1.18%	1.93%	1.93%	0.78%	0.83%	1.18%	0.93%

Example

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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that:

• you invest $10,000 in the applicable class of Fund shares for the periods indicated,

• your investment has a 5% return each year, and

• the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above.

Since the waivers and/or reimbursements shown in the Annual Fund Operating Expenses table above expire as indicated in the preceding table, they are only reflected in the 1 year example and the first year of the other examples. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:

Expense Example Columbia Large Cap Core Fund (USD $)	1 year	3 years	5 years	10 years
Class A	688	938	1,207	1,974
Class B	696	917	1,263	2,108
Class C	296	617	1,063	2,302
Class I	80	251	438	977
Class R5	85	267	465	1,036
Class W	120	385	671	1,484
Class Z	95	307	537	1,197

Expense Example, No Redemption Columbia Large Cap Core Fund (USD $)	1 year	3 years	5 years	10 years
Class A	688	938	1,207	1,974
Class B	196	617	1,063	2,108
Class C	196	617	1,063	2,302
Class I	80	251	438	977
Class R5	85	267	465	1,036
Class W	120	385	671	1,484
Class Z	95	307	537	1,197

Portfolio Turnover

The Fund may pay 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 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 147% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in securities of companies that have market capitalizations, at the time of purchase, in the range of companies in the Standard & Poor’s (S&P) 500 Index (the Index). The market capitalization range of the companies included within the Index was $1.8 billion to $422.3 billion as of May 31, 2013.

The Fund may invest up to 20% of its total assets in foreign securities. The Fund normally invests in common stocks, preferred stocks and convertible securities like warrants and rights and may invest in exchange-traded funds.

The Fund may invest in derivatives, including options and other derivative instruments. The Fund may invest in derivatives for both hedging and non-hedging purposes, including, for example, to seek to enhance returns or as a substitute for a position in an underlying asset.

The Fund’s portfolio may from time to time emphasize one or more economic sectors, which may include, among other sectors, the technology sector.

The Fund’s investment strategy may involve the frequent trading of portfolio securities. This may cause the Fund to incur higher transaction costs (which may adversely affect the Fund’s performance) and may increase taxable distributions for shareholders.

Principal Risks

An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down.

Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money.

Convertible Securities Risk. 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 also be forced to convert a convertible security at an inopportune time, which may decrease the Fund’s return.

Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund.

Derivatives Risk/Options Risk. If the Fund sells a put option, there is a risk that the Fund may be required to buy the underlying asset at a disadvantageous price. If the Fund sells a call option, there is a risk that the Fund may be required to sell the underlying asset at a disadvantageous price, and if the call option sold is not covered (for example, by owning the underlying asset), the Fund's losses are potentially unlimited. These transactions involve other risks, including counterparty risk and hedging risk.

Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar.

Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies.

Frequent Trading Risk.  The portfolio managers may actively and frequently trade investments in the Fund's portfolio to carry out its investment strategies. Frequent trading of investments increases the possibility that the Fund, as relevant, will realize taxable capital gains (including short-term capital gains, which are generally taxable to shareholders at higher rates than long-term capital gains for U.S. federal income tax purposes), which could reduce the Fund's after-tax return. Frequent trading can also mean higher brokerage and other transaction costs, which could reduce the Fund's return. The trading costs and tax effects associated with portfolio turnover may adversely affect the Fund’s performance.

Investing in Other Funds Risk. The Fund’s investment in other funds (affiliated and/or unaffiliated funds, including exchange-traded funds (ETFs)) subjects the Fund to the investment performance (positive or negative) and risks of these underlying funds in direct proportion to the Fund’s investment therein. The performance of underlying funds could be adversely affected if other entities that invest in the same underlying funds make relatively large investments or redemptions in such underlying funds. The Fund, and its shareholders, indirectly bear a portion of the expenses of any funds in which the Fund invests. Because the expenses and costs of a fund are shared by its investors, redemptions by other investors in the fund could result in decreased economies of scale and increased operating expenses for such fund. The Investment Manager may have potential conflicts of interest in selecting affiliated underlying funds for investment by the Fund because the fees paid to it by some underlying funds are higher than the fees paid by other underlying funds, as well as a potential conflict in selecting affiliated funds over unaffiliated funds.

Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors.

Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities.

Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within an economic sector. Companies in the same economic sector may be similarly affected by economic, regulatory, political or market events or conditions, making the Fund more vulnerable to unfavorable developments in that economic  sector than funds that invest more broadly. The more a fund diversifies its investments, the more it spreads risk and potentially reduces the risks of loss and volatility.

Technology and Technology-Related Investment Risk. Companies in the technology sector and technology-related sectors are subject to significant competitive pressures, such as aggressive pricing of their products or services, new market entrants, competition for market share, short product cycles due to an accelerated rate of technological developments and the potential for limited earnings and/or falling profit margins. These companies also face the risks that new services, equipment or technologies will not be accepted by consumers and businesses or will become rapidly obsolete. These factors can affect the profitability of these companies and, as a result, the value of their securities. Also, patent protection is integral to the success of many companies in these sectors, and profitability can be affected materially by, among other things, the cost of obtaining (or failing to obtain) patent approvals, the cost of litigating patent infringement and the loss of patent protection for products (which significantly increases pricing pressures and can materially reduce profitability with respect to such products). In addition, many technology companies have limited operating histories. Prices of these companies' securities historically have been more volatile than other securities, especially over the short term. Because the Fund concentrates its investments (or, invests a significant portion of its net assets) in securities of technology and technology-related companies, the Fund's price may be more volatile than a fund that is invested in a more diverse range of market sectors.

Performance Information

The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.

The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class Z shares (adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities.

The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public.

The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.

Year by Year Total Return (%)
as of December 31 Each Year

Best and Worst Quarterly Returns
During the Period Shown in the Bar Chart

Best                              2nd Quarter 2009                            14.67%


Worst                           4th Quarter 2008                            -20.25%

Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)

Average Annual Total Returns Columbia Large Cap Core Fund	Share Class Inception Date	1 Year	5 Years	10 Years
Class A shares	Aug. 02, 1999	10.54%	(0.46%)	6.09%
Class A shares returns after taxes on distributions	Aug. 02, 1999	9.82%	(0.75%)	5.78%
Class A shares returns after taxes on distributions and sale of Fund shares	Aug. 02, 1999	7.80%	(0.42%)	5.30%
Class B shares	Aug. 02, 1999	11.37%	(0.41%)	5.91%
Class C shares	Aug. 02, 1999	15.47%	(0.03%)	5.91%
Class I shares	Sep. 27, 2010	17.72%	1.04%	7.01%
Class R5 shares	Nov. 08, 2012	17.60%	0.97%	6.97%
Class W shares	Sep. 27, 2010	17.30%	0.76%	6.74%
Class Z shares	Oct. 02, 1998	17.56%	0.96%	6.96%
S&P 500 Index (reflects no deductions for fees, expenses or taxes)		16.00%	1.66%	7.10%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] This charge decreases over time.

[3] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

[1] Other expenses for Class A, Class B, Class C, Class W and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R5 are based on estimated amounts for the Fund's current fiscal year.

[2] Columbia Management Investment Advisers, LLC and certain of its affiliates have contractually agreed to waive fees and/or to reimburse expenses (excluding certain fees and expenses, such as transaction costs and certain other investment related expenses, interest, taxes, acquired fund fees and expenses, and extraordinary expenses) until June 30, 2014, unless sooner terminated at the sole discretion of the Fund's Board of Trustees. Under this agreement, the Fund's net operating expenses, subject to applicable exclusions, will not exceed the annual rates of 1.18% for Class A, 1.93% for Class B, 1.93% for Class C, 0.78% for Class I, 0.83% for Class R5, 1.18% for Class W and 0.93% for Class Z.

[1] Year to Date return as of March 31, 2013: 9.27%

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	COLUMBIA FUNDS SERIES TRUST
Prospectus Date	rr_ProspectusDate	Jul. 01, 2013
Columbia Marsico Focused Equities Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Summary of the Fund
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Columbia Marsico Focused Equities Fund (the Fund) seeks long-term growth of capital.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 19 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund may pay 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 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 76% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	76.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 19 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 50,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	other expenses for Class R4 are based on estimated amounts for the Fund's current fiscal year.
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Management fees have been restated to reflect contractual changes to the investment management fee rates. Other expenses for Class A, Class B, Class C and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that: you invest $10,000 in the applicable class of Fund shares for the periods indicated, your investment has a 5% return each year, and the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Fund invests at least 80% of its net assets in equity securities. These investments mostly consist of equity securities of large-capitalization companies that have market capitalizations of $5 billion or more at the time of purchase. The Fund, which is non-diversified, generally will hold a core position of between 20 and 35 common stocks that are believed to have potential for long-term growth. The number of securities held by the Fund occasionally may exceed this range, such as when the Fund is accumulating new positions, phasing out and replacing existing positions, or responding to exceptional market conditions. The Fund may invest up to 25% in foreign securities, including in emerging market securities. The core investments of the Fund (i.e., the primary investments held by the Fund over time) generally may include established companies and securities that are expected to offer long-term growth potential. However, the Fund's portfolio also may typically include securities of less mature companies, securities with more aggressive growth characteristics, and securities of companies undergoing significant positive developments, such as, without limitation, the introduction of a new product line, the appointment of a new management team, or an acquisition.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down. Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money. Emerging Market Securities Risk. Securities issued by foreign governments or companies in emerging market countries are more likely to have greater exposure to the risks of investing in foreign securities that are described in Foreign Securities Risk. In addition, emerging market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Their economies are usually less mature and their securities markets are typically less developed with more limited trading activity (i.e., lower trading volumes and less liquidity) than more developed countries. Emerging market securities tend to be more volatile than securities in more developed markets. Many emerging market countries are heavily dependent on international trade and have fewer trading partners, which makes them more sensitive to world commodity prices and economic downturns in other countries, and some have a higher risk of currency devaluations. Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar. Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies. Growth Securities Risk. Growth securities typically trade at a higher multiple of earnings than other types of equity securities. Accordingly, the market values of growth securities may be more sensitive to adverse economic or other circumstances or changes in current or expected earnings than the market values of other types of securities. In addition, growth securities, at times, may not perform as well as value securities or the stock market in general, and may be out of favor with investors for varying periods of time. Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors. Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities. Non-Diversified Fund  Risk. The Fund is non-diversified, which generally means that it will invest a greater percentage of its total assets in the securities of fewer issuers than a “diversified” fund. This increases the risk that a change in the value of any one investment held by the Fund could affect the overall value of the Fund more than it would affect that of a diversified fund holding a greater number of investments. Accordingly, the Fund's value will likely be more volatile than the value of a more diversified fund. Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within an economic sector. Companies in the same economic sector may be similarly affected by economic, regulatory, political or market events or conditions, making the Fund more vulnerable to unfavorable developments in that economic sector than funds that invest more broadly. The more a fund diversifies its investments, the more it spreads risk and potentially reduces the risks of loss and volatility. Small- and Mid-Cap Company Securities Risk. Investments in small- and mid-capitalization companies (small- and mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small- and mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small- and mid-cap companies may be less liquid and more volatile than the securities of larger companies.
Risk Lose Money [Text]	rr_RiskLoseMoney	There is no assurance that the Fund will achieve its investment objective and you may lose money.
Risk Nondiversified Status [Text]	rr_RiskNondiversifiedStatus	Non-Diversified Fund  Risk. The Fund is non-diversified, which generally means that it will invest a greater percentage of its total assets in the securities of fewer issuers than a “diversified” fund. This increases the risk that a change in the value of any one investment held by the Fund could affect the overall value of the Fund more than it would affect that of a diversified fund holding a greater number of investments. Accordingly, the Fund's value will likely be more volatile than the value of a more diversified fund.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance. The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (without applicable sales charges and adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities. The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	800.345.6611
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	columbiamanagement.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Year by Year Total Return (%) as of December 31 Each Year
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best and Worst Quarterly Returns During the Period Shown in the Bar Chart Best                              1st Quarter 2012                            16.15% Worst                           4th Quarter 2008                            -21.11%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs).
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	The after-tax returns are shown only for Class A shares and will vary for other share classes.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares.
Columbia Marsico Focused Equities Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	5.75%
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[1]
Management fees	rr_ManagementFeesOverAssets	0.65%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.28%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.18%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	688
3 years	rr_ExpenseExampleYear03	928
5 years	rr_ExpenseExampleYear05	1,187
10 years	rr_ExpenseExampleYear10	1,924
1 year	rr_ExpenseExampleNoRedemptionYear01	688
3 years	rr_ExpenseExampleNoRedemptionYear03	928
5 years	rr_ExpenseExampleNoRedemptionYear05	1,187
10 years	rr_ExpenseExampleNoRedemptionYear10	1,924
2003	rr_AnnualReturn2003	31.34%	[4]
2004	rr_AnnualReturn2004	10.67%	[4]
2005	rr_AnnualReturn2005	9.59%	[4]
2006	rr_AnnualReturn2006	8.35%	[4]
2007	rr_AnnualReturn2007	13.18%	[4]
2008	rr_AnnualReturn2008	(39.77%)	[4]
2009	rr_AnnualReturn2009	30.22%	[4]
2010	rr_AnnualReturn2010	18.52%	[4]
2011	rr_AnnualReturn2011	(2.65%)	[4]
Annual Return 2012	rr_AnnualReturn2012	11.79%	[4]
Year to Date Return, Label	rr_YearToDateReturnLabel	Year to Date return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	11.29%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Mar. 31, 2012
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	16.15%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(21.11%)
1 Year	rr_AverageAnnualReturnYear01	5.36%
5 Years	rr_AverageAnnualReturnYear05	(0.95%)
10 Years	rr_AverageAnnualReturnYear10	6.42%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 1997
Columbia Marsico Focused Equities Fund | Class B
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	5.00%	[5]
Management fees	rr_ManagementFeesOverAssets	0.65%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.28%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.93%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge decreases over time.
1 year	rr_ExpenseExampleYear01	696
3 years	rr_ExpenseExampleYear03	906
5 years	rr_ExpenseExampleYear05	1,242
10 years	rr_ExpenseExampleYear10	2,059
1 year	rr_ExpenseExampleNoRedemptionYear01	196
3 years	rr_ExpenseExampleNoRedemptionYear03	606
5 years	rr_ExpenseExampleNoRedemptionYear05	1,042
10 years	rr_ExpenseExampleNoRedemptionYear10	2,059
1 Year	rr_AverageAnnualReturnYear01	6.55%
5 Years	rr_AverageAnnualReturnYear05	(0.84%)
10 Years	rr_AverageAnnualReturnYear10	6.24%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 1997
Columbia Marsico Focused Equities Fund | Class C
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[6]
Management fees	rr_ManagementFeesOverAssets	0.65%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.28%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.93%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge applies to redemptions within one year of purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	296
3 years	rr_ExpenseExampleYear03	606
5 years	rr_ExpenseExampleYear05	1,042
10 years	rr_ExpenseExampleYear10	2,254
1 year	rr_ExpenseExampleNoRedemptionYear01	196
3 years	rr_ExpenseExampleNoRedemptionYear03	606
5 years	rr_ExpenseExampleNoRedemptionYear05	1,042
10 years	rr_ExpenseExampleNoRedemptionYear10	2,254
1 Year	rr_AverageAnnualReturnYear01	10.08%
5 Years	rr_AverageAnnualReturnYear05	(0.51%)
10 Years	rr_AverageAnnualReturnYear10	6.25%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 1997
Columbia Marsico Focused Equities Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.65%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.07%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.72%
1 year	rr_ExpenseExampleYear01	74
3 years	rr_ExpenseExampleYear03	230
5 years	rr_ExpenseExampleYear05	401
10 years	rr_ExpenseExampleYear10	894
1 year	rr_ExpenseExampleNoRedemptionYear01	74
3 years	rr_ExpenseExampleNoRedemptionYear03	230
5 years	rr_ExpenseExampleNoRedemptionYear05	401
10 years	rr_ExpenseExampleNoRedemptionYear10	894
1 Year	rr_AverageAnnualReturnYear01	12.24%
5 Years	rr_AverageAnnualReturnYear05	0.49%
10 Years	rr_AverageAnnualReturnYear10	7.19%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 27, 2010
Columbia Marsico Focused Equities Fund | Class R4
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.65%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.28%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.93%
1 year	rr_ExpenseExampleYear01	95
3 years	rr_ExpenseExampleYear03	296
5 years	rr_ExpenseExampleYear05	515
10 years	rr_ExpenseExampleYear10	1,143
1 year	rr_ExpenseExampleNoRedemptionYear01	95
3 years	rr_ExpenseExampleNoRedemptionYear03	296
5 years	rr_ExpenseExampleNoRedemptionYear05	515
10 years	rr_ExpenseExampleNoRedemptionYear10	1,143
1 Year	rr_AverageAnnualReturnYear01	11.81%
5 Years	rr_AverageAnnualReturnYear05	0.23%
10 Years	rr_AverageAnnualReturnYear10	7.05%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia Marsico Focused Equities Fund | Class Z
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.65%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.28%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.93%
1 year	rr_ExpenseExampleYear01	95
3 years	rr_ExpenseExampleYear03	296
5 years	rr_ExpenseExampleYear05	515
10 years	rr_ExpenseExampleYear10	1,143
1 year	rr_ExpenseExampleNoRedemptionYear01	95
3 years	rr_ExpenseExampleNoRedemptionYear03	296
5 years	rr_ExpenseExampleNoRedemptionYear05	515
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 1,143
1 Year	rr_AverageAnnualReturnYear01	12.08%
5 Years	rr_AverageAnnualReturnYear05	0.49%
10 Years	rr_AverageAnnualReturnYear10	7.31%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 1997
Columbia Marsico Focused Equities Fund | returns after taxes on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	2.10%
5 Years	rr_AverageAnnualReturnYear05	(1.63%)
10 Years	rr_AverageAnnualReturnYear10	6.04%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 1997
Columbia Marsico Focused Equities Fund | returns after taxes on distributions and sale of Fund shares | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	7.59%
5 Years	rr_AverageAnnualReturnYear05	(0.81%)
10 Years	rr_AverageAnnualReturnYear10	5.64%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 1997
Columbia Marsico Focused Equities Fund | S&P 500 Index (reflects no deductions for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	16.00%
5 Years	rr_AverageAnnualReturnYear05	1.66%
10 Years	rr_AverageAnnualReturnYear10	7.10%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] Management fees have been restated to reflect contractual changes to the investment management fee rates.

[3] Other expenses for Class A, Class B, Class C and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R4 are based on estimated amounts for the Fund's current fiscal year.

[4] Year to Date return as of March 31, 2013: 11.29%

[5] This charge decreases over time.

[6] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

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Columbia Large Cap Enhanced Core Fund

Summary of the Fund

Investment Objective

Columbia Large Cap Enhanced Core Fund (the Fund) seeks total return before fees and expenses that exceeds the total return of the Standard & Poor's (S&P) 500^® Index.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Columbia Large Cap Enhanced Core Fund	Class A	Class I	Class R	Class Y	Class Z
Maximum sales charge (load) imposed on purchases (as a % of offering price)	none	none	none	none	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	none	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Columbia Large Cap Enhanced Core Fund		Class A	Class I	Class R	Class Y	Class Z
Management fees		0.69%	0.69%	0.69%	0.69%	0.69%
Distribution and/or service (12b-1) fees		0.25%	none	0.50%	none	none
Other expenses	[1]	0.35%	0.15%	0.35%	0.15%	0.35%
Total annual Fund operating expenses		1.29%	0.84%	1.54%	0.84%	1.04%
Less: Fee waivers and/or expense reimbursements	[2]	(0.39%)	(0.35%)	(0.39%)	(0.35%)	(0.39%)
Total annual Fund operating expenses after fee waivers and/or reimbursements		0.90%	0.49%	1.15%	0.49%	0.65%

Example

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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that:

• you invest $10,000 in the applicable class of Fund shares for the periods indicated,

• your investment has a 5% return each year, and

• the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above.

Since the waivers and/or reimbursements shown in the Annual Fund Operating Expenses table above expire as indicated in the preceding table, they are only reflected in the examples for the applicable time periods. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:

Expense Example Columbia Large Cap Enhanced Core Fund (USD $)	1 year	3 years	5 years	10 years
Class A	92	365	665	1,518
Class I	50	228	426	1,000
Class R	117	443	798	1,797
Class Y	50	228	426	1,000
Class Z	66	287	531	1,231

Expense Example, No Redemption Columbia Large Cap Enhanced Core Fund (USD $)	1 year	3 years	5 years	10 years
Class A	92	365	665	1,518
Class I	50	228	426	1,000
Class R	117	443	798	1,797
Class Y	50	228	426	1,000
Class Z	66	287	531	1,231

Portfolio Turnover

The Fund may pay 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 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 92% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in common stocks that comprise the S&P 500 Index (the Index), convertible securities that are convertible into stocks included in the Index, and derivatives whose returns are closely equivalent to the returns of the Index or its components.

The Fund primarily invests in securities included in the Index but generally holds fewer stocks than the Index and may hold securities that are not in the Index.

Although the Fund’s investment manager attempts to maintain a portfolio that generally matches the risk characteristics of the Index, it will vary the number and percentages of the Fund’s holdings in attempting to provide higher returns than the Index and to reduce the potential of underperforming the Index over time. The Fund may from time to time emphasize one or more economic sectors in selecting its investments.

In pursuit of the Fund’s objective, the portfolio managers use quantitative analysis to evaluate the relative attractiveness of potential investments.

The Fund may invest in derivatives, such as futures contracts, for investment purposes, for risk management (hedging) purposes and to increase investment flexibility.

Principal Risks

An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down.

Active Management Risk. Although the Fund is managed based primarily on quantitative methods, the Investment Manager conducts a qualitative review of the quantitative output. Therefore, the Fund’s performance will reflect, in part, the ability of the Investment Manager to make active, qualitative decisions, including allocation decisions that seek to achieve the Fund’s investment objective.

Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund.

Derivatives Risk/Futures Contracts Risk. The loss that may be incurred in entering into futures contracts may exceed the amount of the premium paid and may be potentially unlimited. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value (NAV). Additionally, as a result of the low collateral deposits normally involved in futures trading, a relatively small price movement in a futures contract may result in substantial losses to the Fund. Futures contracts may be illiquid. Furthermore, exchanges may limit fluctuations in futures contract prices during a trading session by imposing a maximum permissible price movement on each futures contract. The Fund may be disadvantaged if it is prohibited from executing a trade outside the daily permissible price movement. Futures contracts executed on foreign exchanges may not provide the same protection as U.S. exchanges. These transactions involve additional risks, including counterparty risk, hedging risk and pricing risk.

Index Risk. The Fund's value will generally decline when the performance of its targeted index declines. In addition, because the Fund may not hold all issues included in its index, it may not always be fully invested. The Fund also bears advisory, administrative and other expenses and transaction costs in trading securities, which the index does not bear. Accordingly, the Fund's performance will likely fail to match the performance of its targeted index, after taking expenses into account. It is not possible to invest directly in an index.

Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors.

Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities.

Quantitative Model Risk. Investments 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.

Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within an economic sector. Companies in the same economic sector may be similarly affected by economic, regulatory, political or market events or conditions, making the Fund more vulnerable to unfavorable developments in that economic  sector than funds that invest more broadly. The more a fund diversifies its investments, the more it spreads risk and potentially reduces the risks of loss and volatility.

Performance Information

The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance has varied for each full calendar year shown. The table below the bar chart compares the Fund’s returns for the periods shown with benchmark performance.

Class A share performance is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date.
Except for differences in annual returns resulting from differences in expenses (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities.

The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public.

The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.

Year by Year Total Return (%)
as of December 31 Each Year

Best and Worst Quarterly Returns
During the Period Shown in the Bar Chart

Best                              2nd Quarter 2009                            15.66%


Worst                           4th Quarter 2008                            -21.41%

Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)

Average Annual Total Returns Columbia Large Cap Enhanced Core Fund	Share Class Inception Date	1 Year	5 Years	10 Years
Class A shares	Jul. 31, 1996	15.78%	1.37%	6.99%
Class A shares returns after taxes on distributions	Jul. 31, 1996	15.52%	1.14%	6.05%
Class A shares returns after taxes on distributions and sale of Fund shares	Jul. 31, 1996	10.60%	1.13%	5.69%
Class I shares	Sep. 27, 2010	16.17%	1.52%	7.07%
Class R shares	Jan. 23, 2006	15.52%	1.11%	6.72%
Class Y shares	Jul. 15, 2009	16.15%	1.62%	7.12%
Class Z shares	Jul. 31, 1996	16.12%	1.62%	7.25%
S&P 500 Index (reflects no deductions for fees, expenses or taxes)		16.00%	1.66%	7.10%

[1] Other expenses have been restated to reflect contractual changes to certain fees paid by the Fund.

[2] Columbia Management Investment Advisers, LLC (the Investment Manager) and certain of its affiliates have contractually agreed to waive fees and/or to reimburse expenses (excluding certain fees and expenses, such as transaction costs and certain other investment related expenses, interest, taxes, acquired fund fees and expenses, and extraordinary expenses) until June 30, 2014, unless sooner terminated at the sole discretion of the Fund's Board of Trustees. Under this agreement, the Fund's net operating expenses, subject to applicable exclusions, will not exceed the annual rates of 0.90% for Class A, 0.49% for Class I, 1.15% for Class R, 0.49% for Class Y and 0.65% for Class Z. Separately, the Investment Manager has contractually agreed to waive a portion of the investment management fee so that the net fee would be 0.59% and 0.64% in the fiscal periods ending June 30, 2014 and June 30, 2015, respectively.

[1] Year to Date return as of March 31, 2013: 10.33%

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Columbia Multi-Advisor International Equity Fund

Summary of the Fund

Investment Objective

Columbia Multi-Advisor International Equity Fund (the Fund) seeks long-term capital growth.

Fees and Expenses of the Fund

This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 22 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Columbia Multi-Advisor International Equity Fund	Class A		Class B		Class C		Class I	Class K	Class R	Class R4	Class R5	Class W	Class Y	Class Z
Maximum sales charge (load) imposed on purchases (as a % of offering price)	5.75%		none		none		none	none	none	none	none	none	none	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	1.00%	[1]	5.00%	[2]	1.00%	[3]	none	none	none	none	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Columbia Multi-Advisor International Equity Fund		Class A	Class B	Class C	Class I	Class K	Class R	Class R4	Class R5	Class W	Class Y	Class Z
Management fees		0.76%	0.76%	0.76%	0.76%	0.76%	0.76%	0.76%	0.76%	0.76%	0.76%	0.76%
Distribution and/or service (12b-1) fees		0.25%	1.00%	1.00%	none	none	0.50%	none	none	0.25%	none	none
Other expenses	[1]	0.38%	0.38%	0.38%	0.18%	0.48%	0.38%	0.38%	0.23%	0.38%	0.18%	0.38%
Total annual Fund operating expenses		1.39%	2.14%	2.14%	0.94%	1.24%	1.64%	1.14%	0.99%	1.39%	0.94%	1.14%

Example

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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that:

• you invest $10,000 in the applicable class of Fund shares for the periods indicated,

• your investment has a 5% return each year, and

• the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above.

Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:

Expense Example Columbia Multi-Advisor International Equity Fund (USD $)	1 year	3 years	5 years	10 years
Class A	708	990	1,292	2,148
Class B	717	970	1,349	2,282
Class C	317	670	1,149	2,472
Class I	96	300	520	1,155
Class K	126	393	681	1,500
Class R	167	517	892	1,944
Class R4	116	362	628	1,386
Class R5	101	315	547	1,213
Class W	142	440	761	1,669
Class Y	96	300	520	1,155
Class Z	116	362	628	1,386

Expense Example, No Redemption Columbia Multi-Advisor International Equity Fund (USD $)	1 year	3 years	5 years	10 years
Class A	708	990	1,292	2,148
Class B	217	670	1,149	2,282
Class C	217	670	1,149	2,472
Class I	96	300	520	1,155
Class K	126	393	681	1,500
Class R	167	517	892	1,944
Class R4	116	362	628	1,386
Class R5	101	315	547	1,213
Class W	142	440	761	1,669
Class Y	96	300	520	1,155
Class Z	116	362	628	1,386

Portfolio Turnover

The Fund may pay 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 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 100% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in equity securities (including common stock, preferred stock, and depositary receipts) of established companies located in at least three countries other than the United States, including emerging market countries. The Fund invests in companies that are believed to have the potential for growth or to be undervalued.

The Fund may also invest in derivatives, including futures, forward foreign currency contracts, other types of forwards and other derivative instruments. The Fund may invest in derivatives for both hedging and non-hedging purposes, including, for example, to seek to enhance returns or as a substitute for a position in an underlying asset. The Fund may invest in derivatives to manage the Fund’s overall risk exposure.

In addition, under normal circumstances, the Fund uses forward foreign currency contracts in seeking to enhance returns based on fluctuations in the values of various foreign currencies relative to the U.S. dollar (the Currency Overlay Strategy). The Fund gains economic exposure to foreign currencies, through its investment in forward foreign currency contracts, comparable to the exposure that it would have had if it had bought or sold the foreign currencies directly.

The Fund may invest in companies involved in initial public offerings, tender offers, mergers and other corporate restructuring.

Columbia Management Investment Advisers, LLC (Columbia Management or the Investment Manager) serves as the investment manager for the Fund and will attempt to achieve the Fund’s objective by managing a portion of the Fund’s assets (the Columbia Management sleeve) and selecting one or more subadvisers to manage other sleeves independently of each other and Columbia Management. The Fund’s subadviser is Threadneedle International Limited (Threadneedle), an affiliate of the Investment Manager. The subadviser and Columbia Management use their own methodology for selecting investments.

Each sleeve manager’s investment strategy may involve the frequent trading of portfolio securities, which may increase brokerage and other transaction costs and have adverse tax consequences.

Principal Risks

An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down.

Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money.

Depositary Receipts Risks. Depositary receipts are receipts issued by a bank or trust company and evidence of ownership of underlying securities issued by foreign companies. Some foreign securities are traded in the form of American Depositary Receipts (ADRs). Depositary receipts involve the risks of other investments in foreign securities, including 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. In addition, ADR holders may not have all the legal rights of shareholders and may experience difficulty in receiving shareholder communications.

Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund.

Derivatives Risk/Forward Foreign Currency Contracts Risk. These instruments are a type of derivative contract whereby the Fund may agree to buy or sell a country’s or region’s currency at a specific price on a specific date in the future. These contracts may fall in value due to foreign market downswings or foreign currency value fluctuations. The Fund’s investment or hedging strategies may not achieve their objective. Investment in these instruments also subjects the Fund to counterparty risk.

Derivatives Risk/Futures Contracts Risk. The loss that may be incurred in entering into futures contracts may exceed the amount of the premium paid and may be potentially unlimited. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value (NAV). Additionally, as a result of the low collateral deposits normally involved in futures trading, a relatively small price movement in a futures contract may result in substantial losses to the Fund. Futures contracts may be illiquid. Furthermore, exchanges may limit fluctuations in futures contract prices during a trading session by imposing a maximum permissible price movement on each futures contract. The Fund may be disadvantaged if it is prohibited from executing a trade outside the daily permissible price movement. Futures contracts executed on foreign exchanges may not provide the same protection as U.S. exchanges. These transactions involve additional risks, including counterparty risk, hedging risk and pricing risk.

Emerging Market Securities Risk. Securities issued by foreign governments or companies in emerging market countries are more likely to have greater exposure to the risks of investing in foreign securities that are described in Foreign Securities Risk. In addition, emerging market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Their economies are usually less mature and their securities markets are typically less developed with more limited trading activity (i.e., lower trading volumes and less liquidity) than more developed countries. Emerging market securities tend to be more volatile than securities in more developed markets. Many emerging market countries are heavily dependent on international trade and have fewer trading partners, which makes them more sensitive to world commodity prices and economic downturns in other countries, and some have a higher risk of currency devaluations.

Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar.

Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies.

Frequent Trading Risk.  The portfolio managers may actively and frequently trade investments in the Fund's portfolio to carry out its investment strategies. Frequent trading of investments increases the possibility that the Fund, as relevant, will realize taxable capital gains (including short-term capital gains, which are generally taxable to shareholders at higher rates than long-term capital gains for U.S. federal income tax purposes), which could reduce the Fund's after-tax return. Frequent trading can also mean higher brokerage and other transaction costs, which could reduce the Fund's return. The trading costs and tax effects associated with portfolio turnover may adversely affect the Fund’s performance.

Geographic Concentration Risk. The Fund may be particularly susceptible to economic, political, regulatory or other events or conditions affecting issuers and countries within the specific geographic regions in which the Fund invests. The Fund’s net asset value may be more volatile than a more geographically diversified fund.

Growth Securities Risk. Growth securities typically trade at a higher multiple of earnings than other types of equity securities. Accordingly, the market values of growth securities may be more sensitive to adverse economic or other circumstances or changes in current or expected earnings than the market values of other types of securities. In addition, growth securities, at times, may not perform as well as value securities or the stock market in general, and may be out of favor with investors for varying periods of time.

Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors.

Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities.

Multi-Adviser Risk. The Fund has multiple subadvisers. Each subadviser makes investment decisions independently from the other subadviser(s). It is possible that the security selection process of one subadviser will not complement or may conflict or even contradict that of the other subadviser(s), including making off-setting trades that have no net effect to the Fund, but which may increase Fund expenses. As a result, the Fund's exposure to a given security, industry, sector or market capitalization could be smaller or larger than if the Fund were managed by a single subadviser, which could affect the Fund's performance.

Pacific/Asia Region Risk. Many of the countries in the Pacific/Asia region are considered underdeveloped or developing, including from a political, economic and/or social perspective, and may have relatively unstable governments and economies based on limited business, industries and/or natural resources or commodities. Events in any one country within the region may impact other countries in the region or the region as a whole. As a result, events in the region will generally have a greater effect on the Fund than if the Fund were more geographically diversified. This could result in increased volatility and losses within the Fund.

Quantitative Model Risk. Investments 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.

Small Company Securities Risk. Investments in small-capitalization companies (small-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small-cap companies may be less liquid and more volatile than the securities of larger companies.

Special Situations Risk. Securities of companies that are involved in an initial public offering or a major corporate event, such as a business consolidation or restructuring, may present special risk because of the high degree of uncertainty that can be associated with such events. Securities issued in initial public offerings often are issued by companies that are in the early stages of development, have a history of little or no revenues and may operate at a loss following the offering. It is possible that there will be no active trading market for the securities after the offering, and that the market price of the securities may be subject to significant and unpredictable fluctuations. Investing in special situations may have a magnified effect on the performance of funds with small amounts of assets.

Value Securities Risk. Value securities are securities of companies that may have experienced, for example, adverse business, industry or other developments or may be subject to special risks that have caused the securities to be out of favor and, in turn, potentially undervalued. The market value of a portfolio security may not meet the portfolio manager's perceived value assessment of that security, or may decline in price, even though the portfolio manager(s) believe(s) the securities are already undervalued. There is also a risk that it may take longer than expected for the value of these investments to rise to the portfolio manager’s perceived value. In addition, value securities, at times, may not perform as well as growth securities or the stock market in general, and may be out of favor with investors for varying periods of time.

Performance Information

The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.

The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (without applicable sales charges and adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities.

The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public.

The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.

Year by Year Total Return (%)
as of December 31 Each Year

Best and Worst Quarterly Returns
During the Period Shown in the Bar Chart

Best                              2nd Quarter 2009                            25.94%


Worst                           4th Quarter 2008                            -24.41%

Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)

Average Annual Total Returns Columbia Multi-Advisor International Equity Fund	Share Class Inception Date	1 Year	5 Years	10 Years
Class A shares	Jun. 03, 1992	11.08%	(6.19%)	6.40%
Class A shares returns after taxes on distributions	Jun. 03, 1992	10.44%	(6.55%)	5.72%
Class A shares returns after taxes on distributions and sale of Fund shares	Jun. 03, 1992	7.81%	(5.21%)	5.54%
Class B shares	Jun. 07, 1993	12.08%	(6.14%)	6.24%
Class C shares	Jun. 17, 1992	16.06%	(5.80%)	6.39%
Class I shares	Sep. 27, 2010	18.53%	(4.74%)	7.36%
Class K shares	Mar. 07, 2011	18.11%	(4.95%)	7.19%
Class R shares	Jan. 23, 2006	17.61%	(5.32%)	6.77%
Class R4 shares	Nov. 08, 2012	18.31%	(4.83%)	7.31%
Class R5 shares	Nov. 08, 2012	18.35%	(4.82%)	7.31%
Class W shares	Sep. 27, 2010	18.01%	(5.05%)	7.07%
Class Y shares	Mar. 07, 2011	18.44%	(4.77%)	7.34%
Class Z shares	Dec. 02, 1991	18.28%	(4.84%)	7.31%
MSCI EAFE Index (Net) (reflects reinvested dividends net of withholding taxes but reflects no deductions for fees, expenses, or taxes)		17.32%	(3.69%)	8.21%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, charged as follows: 1.00% CDSC if redeemed within 12 months of purchase, and 0.50% CDSC if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] This charge decreases over time.

[3] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

[1] Other expenses for Class A, Class B, Class C, Class K, Class R, Class W, Class Y and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R4 and Class R5 are based on estimated amounts for the Fund's current fiscal year.

[1] Year to Date return as of March 31, 2013: 3.03%

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Columbia Large Cap Index Fund

Summary of the Fund

Investment Objective

Columbia Large Cap Index Fund (the Fund) seeks total return before fees and expenses that corresponds to the total return of the Standard & Poor’s (S&P) 500^® Index.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Columbia Large Cap Index Fund	Class A	Class B		Class I	Class R5	Class Z
Maximum sales charge (load) imposed on purchases (as a % of offering price)	none	none		none	none	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	none	5.00%	[1]	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Columbia Large Cap Index Fund		Class A	Class B	Class I	Class R5	Class Z
Management fees		0.10%	0.10%	0.10%	0.10%	0.10%
Distribution and/or service (12b-1) fees		0.25%	1.00%	none	none	none
Other expenses	[1]	0.10%	0.10%	0.10%	0.10%	0.10%
Total annual Fund operating expenses		0.45%	1.20%	0.20%	0.20%	0.20%

Example

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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that:

• you invest $10,000 in the applicable class of Fund shares for the periods indicated,

• your investment has a 5% return each year, and

• the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above.

Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:

Expense Example Columbia Large Cap Index Fund (USD $)	1 year	3 years	5 years	10 years
Class A	46	144	252	567
Class B	622	681	860	1,246
Class I	20	64	113	255
Class R5	20	64	113	255
Class Z	20	64	113	255

Expense Example, No Redemption Columbia Large Cap Index Fund (USD $)	1 year	3 years	5 years	10 years
Class A	46	144	252	567
Class B	122	381	660	1,246
Class I	20	64	113	255
Class R5	20	64	113	255
Class Z	20	64	113	255

Portfolio Turnover

The Fund may pay 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 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 7% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in common stocks that comprise the S&P 500 Index (the Index). The Fund may invest in derivatives, consisting of stock index futures, as substitutes for the underlying securities in the Index.

Different common stocks have different weightings in the Index, depending on the amount of stock outstanding and the stock’s current price. In seeking to match the performance of the Index, Columbia Management Investment Advisers, LLC (the Investment Manager) attempts to allocate the Fund’s assets among common stocks in approximately the same weightings as the Index. This is referred to as a passive or indexing approach to investing. The Fund may buy shares of Ameriprise Financial, Inc., an affiliate of the Fund’s investment manager, which is currently included in the Index, subject to certain restrictions.

The Fund attempts to achieve at least a 95% correlation between the performance of the Index and the Fund’s investment results, before fees and expenses.

Principal Risks

An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down.

Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund.

Derivatives Risk/Futures Contracts Risk. The loss that may be incurred in entering into futures contracts may exceed the amount of the premium paid and may be potentially unlimited. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value (NAV). Additionally, as a result of the low collateral deposits normally involved in futures trading, a relatively small price movement in a futures contract may result in substantial losses to the Fund. Futures contracts may be illiquid. Furthermore, exchanges may limit fluctuations in futures contract prices during a trading session by imposing a maximum permissible price movement on each futures contract. The Fund may be disadvantaged if it is prohibited from executing a trade outside the daily permissible price movement. Futures contracts executed on foreign exchanges may not provide the same protection as U.S. exchanges. These transactions involve additional risks, including counterparty risk, hedging risk and pricing risk.

Index Risk. The Fund's value will generally decline when the performance of its targeted index declines. In addition, because the Fund may not hold all issues included in its index, it may not always be fully invested. The Fund also bears advisory, administrative and other expenses and transaction costs in trading securities, which the index does not bear. Accordingly, the Fund's performance will likely fail to match the performance of its targeted index, after taking expenses into account. It is not possible to invest directly in an index.

Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors.

Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities.

Tracking Error Risk. The Fund will not track its benchmark index perfectly and the Fund may not outperform the index. The tools that the Investment Manager uses to replicate the index are not perfect and the Fund’s performance may be impacted by the size of the Fund’s portfolio, the effectiveness of sampling techniques, transaction costs, management fees and expenses, brokerage commissions and fees, the extent and timing of cash flows in and out of the Fund and changes in the index.

Performance Information

The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance has varied for each full calendar year shown. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.

Class A share performance is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class Z shares (adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date.

Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities.

The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public.

The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.

Year by Year Total Return (%)
as of December 31 Each Year

Best and Worst Quarterly Returns
During the Period Shown in the Bar Chart

Best                              2nd Quarter 2009                            15.80%


Worst                           4th Quarter 2008                            -21.99%

Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)

Average Annual Total Returns Columbia Large Cap Index Fund	Share Class Inception Date	1 Year	5 Years	10 Years
Class A shares	Oct. 10, 1995	15.51%	1.28%	6.68%
Class A shares returns after taxes on distributions	Oct. 10, 1995	15.15%	0.99%	6.36%
Class A shares returns after taxes on distributions and sale of Fund shares	Oct. 10, 1995	10.55%	1.03%	5.78%
Class B shares	Sep. 23, 2005	9.61%	0.14%	5.89%
Class I shares	Nov. 16, 2011	15.78%	1.48%	6.89%
Class R5 shares	Nov. 08, 2012	15.76%	1.53%	6.95%
Class Z shares	Dec. 15, 1993	15.78%	1.53%	6.95%
S&P 500 Index (reflects no deductions for fees, expenses or taxes)		16.00%	1.66%	7.10%

[1] This charge decreases over time.

[1] Other expenses have been restated to reflect contractual changes to certain fees paid by the Fund.

[1] Year to Date return as of March 31, 2013: 10.45%

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Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	COLUMBIA FUNDS SERIES TRUST
Prospectus Date	rr_ProspectusDate	Jul. 01, 2013
Columbia Marsico 21st Century Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Summary of the Fund
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Columbia Marsico 21st Century Fund (the Fund) seeks long-term growth of capital.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 19 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund may pay 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 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 65% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	65.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 19 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 50,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	other expenses for Class R4 are based on estimated amounts for the Fund's current fiscal year.
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Management fees have been restated to reflect contractual changes to the investment management fee rates. Other expenses for Class A, Class B, Class C, Class R and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that: you invest $10,000 in the applicable class of Fund shares for the periods indicated, your investment has a 5% return each year, and the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund invests primarily in equity securities of companies of any capitalization size and generally will hold a core position of between 35 and 50 common stocks. The number of securities held by the Fund occasionally may exceed this range, such as when the Fund is accumulating new positions, phasing out and replacing existing positions, or responding to exceptional market conditions. The Fund may invest without limit in foreign securities, including in emerging market securities. The Fund may from time to time emphasize one or more economic sectors in selecting its investments. The Fund also may invest in foreign currency exchange contracts to convert foreign currencies to and from the U.S. dollar, and to hedge against changes in foreign currency exchange rates. The core investments of the Fund (i.e., the primary investments held by the Fund over time) generally may include established companies and securities that are expected to offer long-term growth potential. However, the Fund's portfolio also may typically include securities of less mature companies, securities with more aggressive growth characteristics, and securities of companies undergoing significant positive developments, such as, without limitation, the introduction of a new product line, the appointment of a new management team, or an acquisition. The Fund’s investment strategy may involve the frequent trading of portfolio securities. This may cause the Fund to incur higher transaction costs (which may adversely affect the Fund’s performance) and may increase taxable distributions for shareholders.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down. Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money. Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund. Derivatives Risk/Forward Foreign Currency Contracts Risk. These instruments are a type of derivative contract whereby the Fund may agree to buy or sell a country’s or region’s currency at a specific price on a specific date in the future. These contracts may fall in value due to foreign market downswings or foreign currency value fluctuations. The Fund’s investment or hedging strategies may not achieve their objective. Investment in these instruments also subjects the Fund to counterparty risk. Emerging Market Securities Risk. Securities issued by foreign governments or companies in emerging market countries are more likely to have greater exposure to the risks of investing in foreign securities that are described in Foreign Securities Risk. In addition, emerging market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Their economies are usually less mature and their securities markets are typically less developed with more limited trading activity (i.e., lower trading volumes and less liquidity) than more developed countries. Emerging market securities tend to be more volatile than securities in more developed markets. Many emerging market countries are heavily dependent on international trade and have fewer trading partners, which makes them more sensitive to world commodity prices and economic downturns in other countries, and some have a higher risk of currency devaluations. Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar. Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies. Frequent Trading Risk.  The portfolio managers may actively and frequently trade investments in the Fund's portfolio to carry out its investment strategies. Frequent trading of investments increases the possibility that the Fund, as relevant, will realize taxable capital gains (including short-term capital gains, which are generally taxable to shareholders at higher rates than long-term capital gains for U.S. federal income tax purposes), which could reduce the Fund's after-tax return. Frequent trading can also mean higher brokerage and other transaction costs, which could reduce the Fund's return. The trading costs and tax effects associated with portfolio turnover may adversely affect the Fund’s performance. Growth Securities Risk. Growth securities typically trade at a higher multiple of earnings than other types of equity securities. Accordingly, the market values of growth securities may be more sensitive to adverse economic or other circumstances or changes in current or expected earnings than the market values of other types of securities. In addition, growth securities, at times, may not perform as well as value securities or the stock market in general, and may be out of favor with investors for varying periods of time. Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors. Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities. Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within an economic sector. Companies in the same economic sector may be similarly affected by economic, regulatory, political or market events or conditions, making the Fund more vulnerable to unfavorable developments in that economic  sector than funds that invest more broadly. The more a fund diversifies its investments, the more it spreads risk and potentially reduces the risks of loss and volatility. Small- and Mid-Cap Company Securities Risk. Investments in small- and mid-capitalization companies (small- and mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small- and mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small- and mid-cap companies may be less liquid and more volatile than the securities of larger companies.
Risk Lose Money [Text]	rr_RiskLoseMoney	There is no assurance that the Fund will achieve its investment objective and you may lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance. The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (without applicable sales charges and adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities. The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	800.345.6611
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	columbiamanagement.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Year by Year Total Return (%) as of December 31 Each Year
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best and Worst Quarterly Returns During the Period Shown in the Bar Chart Best                              2nd Quarter 2003                            22.13% Worst                           4th Quarter 2008                            -25.12%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs).
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	The after-tax returns are shown only for Class A shares and will vary for other share classes.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares.
Columbia Marsico 21st Century Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	5.75%
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[1]
Management fees	rr_ManagementFeesOverAssets	0.67%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.26%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.18%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	688
3 years	rr_ExpenseExampleYear03	928
5 years	rr_ExpenseExampleYear05	1,187
10 years	rr_ExpenseExampleYear10	1,924
1 year	rr_ExpenseExampleNoRedemptionYear01	688
3 years	rr_ExpenseExampleNoRedemptionYear03	928
5 years	rr_ExpenseExampleNoRedemptionYear05	1,187
10 years	rr_ExpenseExampleNoRedemptionYear10	1,924
2003	rr_AnnualReturn2003	48.56%	[4]
2004	rr_AnnualReturn2004	21.94%	[4]
2005	rr_AnnualReturn2005	7.98%	[4]
2006	rr_AnnualReturn2006	18.53%	[4]
2007	rr_AnnualReturn2007	19.88%	[4]
2008	rr_AnnualReturn2008	(44.63%)	[4]
2009	rr_AnnualReturn2009	27.41%	[4]
2010	rr_AnnualReturn2010	16.95%	[4]
2011	rr_AnnualReturn2011	(12.36%)	[4]
2012	rr_AnnualReturn2012	11.78%
Year to Date Return, Label	rr_YearToDateReturnLabel	Year to Date return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	10.52%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2003
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	22.13%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(25.12%)
1 Year	rr_AverageAnnualReturnYear01	5.32%
5 Years	rr_AverageAnnualReturnYear05	(5.29%)
10 Years	rr_AverageAnnualReturnYear10	7.79%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 10, 2000
Columbia Marsico 21st Century Fund | Class B
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	5.00%	[5]
Management fees	rr_ManagementFeesOverAssets	0.67%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.26%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.93%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge decreases over time.
1 year	rr_ExpenseExampleYear01	696
3 years	rr_ExpenseExampleYear03	906
5 years	rr_ExpenseExampleYear05	1,242
10 years	rr_ExpenseExampleYear10	2,059
1 year	rr_ExpenseExampleNoRedemptionYear01	196
3 years	rr_ExpenseExampleNoRedemptionYear03	606
5 years	rr_ExpenseExampleNoRedemptionYear05	1,042
10 years	rr_ExpenseExampleNoRedemptionYear10	2,059
1 Year	rr_AverageAnnualReturnYear01	5.98%
5 Years	rr_AverageAnnualReturnYear05	(5.27%)
10 Years	rr_AverageAnnualReturnYear10	7.61%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 10, 2000
Columbia Marsico 21st Century Fund | Class C
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[6]
Management fees	rr_ManagementFeesOverAssets	0.67%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.26%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.93%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge applies to redemptions within one year of purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	296
3 years	rr_ExpenseExampleYear03	606
5 years	rr_ExpenseExampleYear05	1,042
10 years	rr_ExpenseExampleYear10	2,254
1 year	rr_ExpenseExampleNoRedemptionYear01	196
3 years	rr_ExpenseExampleNoRedemptionYear03	606
5 years	rr_ExpenseExampleNoRedemptionYear05	1,042
10 years	rr_ExpenseExampleNoRedemptionYear10	2,254
1 Year	rr_AverageAnnualReturnYear01	9.98%
5 Years	rr_AverageAnnualReturnYear05	(4.88%)
10 Years	rr_AverageAnnualReturnYear10	7.61%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 10, 2000
Columbia Marsico 21st Century Fund | Class R
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.67%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.50%
Other expenses	rr_OtherExpensesOverAssets	0.26%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.43%
1 year	rr_ExpenseExampleYear01	146
3 years	rr_ExpenseExampleYear03	452
5 years	rr_ExpenseExampleYear05	782
10 years	rr_ExpenseExampleYear10	1,713
1 year	rr_ExpenseExampleNoRedemptionYear01	146
3 years	rr_ExpenseExampleNoRedemptionYear03	452
5 years	rr_ExpenseExampleNoRedemptionYear05	782
10 years	rr_ExpenseExampleNoRedemptionYear10	1,713
1 Year	rr_AverageAnnualReturnYear01	11.62%
5 Years	rr_AverageAnnualReturnYear05	(4.40%)
10 Years	rr_AverageAnnualReturnYear10	8.16%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 23, 2006
Columbia Marsico 21st Century Fund | Class R4
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.67%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.26%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.93%
1 year	rr_ExpenseExampleYear01	95
3 years	rr_ExpenseExampleYear03	296
5 years	rr_ExpenseExampleYear05	515
10 years	rr_ExpenseExampleYear10	1,143
1 year	rr_ExpenseExampleNoRedemptionYear01	95
3 years	rr_ExpenseExampleNoRedemptionYear03	296
5 years	rr_ExpenseExampleNoRedemptionYear05	515
10 years	rr_ExpenseExampleNoRedemptionYear10	1,143
1 Year	rr_AverageAnnualReturnYear01	11.84%
5 Years	rr_AverageAnnualReturnYear05	(4.16%)
10 Years	rr_AverageAnnualReturnYear10	8.44%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia Marsico 21st Century Fund | Class Z
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.67%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.26%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.93%
1 year	rr_ExpenseExampleYear01	95
3 years	rr_ExpenseExampleYear03	296
5 years	rr_ExpenseExampleYear05	515
10 years	rr_ExpenseExampleYear10	1,143
1 year	rr_ExpenseExampleNoRedemptionYear01	95
3 years	rr_ExpenseExampleNoRedemptionYear03	296
5 years	rr_ExpenseExampleNoRedemptionYear05	515
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 1,143
1 Year	rr_AverageAnnualReturnYear01	12.15%
5 Years	rr_AverageAnnualReturnYear05	(3.93%)
10 Years	rr_AverageAnnualReturnYear10	8.69%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 10, 2000
Columbia Marsico 21st Century Fund | returns after taxes on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	5.32%
5 Years	rr_AverageAnnualReturnYear05	(5.29%)
10 Years	rr_AverageAnnualReturnYear10	7.67%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 10, 2000
Columbia Marsico 21st Century Fund | returns after taxes on distributions and sale of Fund shares | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	3.47%
5 Years	rr_AverageAnnualReturnYear05	(4.42%)
10 Years	rr_AverageAnnualReturnYear10	6.88%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 10, 2000
Columbia Marsico 21st Century Fund | Russell 3000 Index (reflects no deductions for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	16.42%
5 Years	rr_AverageAnnualReturnYear05	2.04%
10 Years	rr_AverageAnnualReturnYear10	7.68%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] Management fees have been restated to reflect contractual changes to the investment management fee rates.

[3] Other expenses for Class A, Class B, Class C, Class R and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R4 are based on estimated amounts for the Fund's current fiscal year.

[4] Year to Date return as of March 31, 2013: 10.52%

[5] This charge decreases over time.

[6] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	COLUMBIA FUNDS SERIES TRUST
Prospectus Date	rr_ProspectusDate	Jul. 01, 2013
Columbia Overseas Value Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Summary of the Fund
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Columbia Overseas Value Fund (the Fund) seeks long-term capital appreciation.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 19 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	June 30, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund may pay 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 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 46% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	46.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 19 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 50,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	other expenses for Class A, Class B, Class C, Class K and Class R are based on estimated amounts for the Fund’s current fiscal year.
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Other expenses for Class W and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that: you invest $10,000 in the applicable class of Fund shares for the periods indicated, your investment has a 5% return each year, and the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above. Since the waivers and/or reimbursements shown in the Annual Fund Operating Expenses table above expire as indicated in the preceding table, they are only reflected in the 1 year example and the first year of the other examples. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Fund invests at least 80% of total assets (including the amount of any borrowings for investment purposes) in equity securities of foreign companies that have market capitalizations of more than $1 billion at the time of purchase. The Fund typically invests in foreign companies in at least three countries, other than the United States, at any one time and may invest in emerging markets. The Fund may invest directly in foreign securities or indirectly through closed-end investment companies and depositary receipts. The Fund may invest in currency forwards, futures and options for both hedging and non-hedging purposes, including, for example, to seek to enhance returns or, in certain unusual circumstances, when holding a derivative is deemed preferable to holding the underlying asset. The Fund has the following limits on its investments, which are applied at the time an investment is made. The Fund: normally invests no more than 5% of its total assets in a single security; typically invests up to the greater of (i) 20% of its total assets in a single country or industry or (ii) 150% of the weighting of a single country or industry in the MSCI Europe, Australasia, Far East (MSCI EAFE) Value Index (limited to less than 25% of its total assets in a single industry, other than U.S. Government obligations); and generally may not invest more than 20% of its total assets in emerging markets. The investment manager combines fundamental and quantitative analysis with risk management in identifying value opportunities and constructing the Fund's portfolio.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down. Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money. Depositary Receipts Risks. Depositary receipts are receipts issued by a bank or trust company and evidence of ownership of underlying securities issued by foreign companies. Some foreign securities are traded in the form of American Depositary Receipts (ADRs). Depositary receipts involve the risks of other investments in foreign securities, including 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. In addition, ADR holders may not have all the legal rights of shareholders and may experience difficulty in receiving shareholder communications. Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund. Derivatives Risk/Forward Foreign Currency Contracts Risk. These instruments are a type of derivative contract whereby the Fund may agree to buy or sell a country’s or region’s currency at a specific price on a specific date in the future. These contracts may fall in value due to foreign market downswings or foreign currency value fluctuations. The Fund’s investment or hedging strategies may not achieve their objective. Investment in these instruments also subjects the Fund to counterparty risk. Derivatives Risk/Futures Contracts Risk. The loss that may be incurred in entering into futures contracts may exceed the amount of the premium paid and may be potentially unlimited. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value (NAV). Additionally, as a result of the low collateral deposits normally involved in futures trading, a relatively small price movement in a futures contract may result in substantial losses to the Fund. Futures contracts may be illiquid. Furthermore, exchanges may limit fluctuations in futures contract prices during a trading session by imposing a maximum permissible price movement on each futures contract. The Fund may be disadvantaged if it is prohibited from executing a trade outside the daily permissible price movement. Futures contracts executed on foreign exchanges may not provide the same protection as U.S. exchanges. These transactions involve additional risks, including counterparty risk, hedging risk and pricing risk. Derivatives Risk/Options Risk. If the Fund sells a put option, there is a risk that the Fund may be required to buy the underlying asset at a disadvantageous price. If the Fund sells a call option, there is a risk that the Fund may be required to sell the underlying asset at a disadvantageous price, and if the call option sold is not covered (for example, by owning the underlying asset), the Fund's losses are potentially unlimited. These transactions involve other risks, including counterparty risk and hedging risk. Emerging Market Securities Risk. Securities issued by foreign governments or companies in emerging market countries are more likely to have greater exposure to the risks of investing in foreign securities that are described in Foreign Securities Risk. In addition, emerging market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Their economies are usually less mature and their securities markets are typically less developed with more limited trading activity (i.e., lower trading volumes and less liquidity) than more developed countries. Emerging market securities tend to be more volatile than securities in more developed markets. Many emerging market countries are heavily dependent on international trade and have fewer trading partners, which makes them more sensitive to world commodity prices and economic downturns in other countries, and some have a higher risk of currency devaluations. Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar. Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies. Investing in Other Funds Risk. The Fund’s investment in other funds (affiliated and/or unaffiliated funds, including exchange-traded funds (ETFs)) subjects the Fund to the investment performance (positive or negative) and risks of these underlying funds in direct proportion to the Fund’s investment therein. The performance of underlying funds could be adversely affected if other entities that invest in the same underlying funds make relatively large investments or redemptions in such underlying funds. The Fund, and its shareholders, indirectly bear a portion of the expenses of any funds in which the Fund invests. Because the expenses and costs of a fund are shared by its investors, redemptions by other investors in the fund could result in decreased economies of scale and increased operating expenses for such fund. The Investment Manager may have potential conflicts of interest in selecting affiliated underlying funds for investment by the Fund because the fees paid to it by some underlying funds are higher than the fees paid by other underlying funds, as well as a potential conflict in selecting affiliated funds over unaffiliated funds. Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors. Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities. Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within an economic sector, including the financial services sector. Companies in the same economic sector may be similarly affected by economic, regulatory, political or market events or conditions, making the Fund more vulnerable to unfavorable developments in that economic sector than funds that invest more broadly. The more a fund diversifies its investments, the more it spreads risk and potentially reduces the risks of loss and volatility. Because the Fund’s portfolio managers may invest significantly in the financial services sector, the Fund may be more susceptible to the particular risks of the financial services sector than if the Fund were invested in a wider variety of companies in unrelated industries. Small- and Mid-Cap Company Securities Risk. Investments in small- and mid-capitalization companies (small- and mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small- and mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small- and mid-cap companies may be less liquid and more volatile than the securities of larger companies. Value Securities Risk. Value securities are securities of companies that may have experienced, for example, adverse business, industry or other developments or may be subject to special risks that have caused the securities to be out of favor and, in turn, potentially undervalued. The market value of a portfolio security may not meet the portfolio manager's perceived value assessment of that security, or may decline in price, even though the portfolio manager(s) believe(s) the securities are already undervalued. There is also a risk that it may take longer than expected for the value of these investments to rise to the portfolio manager’s perceived value. In addition, value securities, at times, may not perform as well as growth securities or the stock market in general, and may be out of favor with investors for varying periods of time.
Risk Lose Money [Text]	rr_RiskLoseMoney	There is no assurance that the Fund will achieve its investment objective and you may lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class Z share performance has varied for each full calendar year shown. Class Z share performance is shown in the bar chart because the Fund has less than ten calendar years of performance and Class Z shares are the oldest share class of the Fund. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance. The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class Z shares (adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Class A, Class B, Class C and Class K shares of the Fund commenced operations after the periods ended shown in the table below and, therefore, performance is not yet available. Class R shares of the Fund did not commence operations prior to the date of this prospectus and, therefore, performance is not yet available. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities. The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class Z shares and will vary for other share classes. Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares. After-tax returns are shown for Class Z shares because the Fund has less than ten calendar years of performance and Class Z shares are the oldest share class of the Fund. The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class Z share performance has varied for each full calendar year shown. Class Z share performance is shown in the bar chart because the Fund has less than ten calendar years of performance and Class Z shares are the oldest share class of the Fund. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	Class A, Class B, Class C and Class K shares of the Fund commenced operations after the periods ended shown in the table below and, therefore, performance is not yet available. Class R shares of the Fund did not commence operations prior to the date of this prospectus and, therefore, performance is not yet available.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	800.345.6611
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	columbiamanagement.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Year by Year Total Return (%) as of December 31 Each Year
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best and Worst Quarterly Returns During the Period Shown in the Bar Chart Best                              2nd Quarter 2009                            32.29% Worst                           3rd Quarter 2011                            -18.87%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs).
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	The after-tax returns are shown only for Class Z shares and will vary for other share classes.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares.
Columbia Overseas Value Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	5.75%
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[1]
Management fees	rr_ManagementFeesOverAssets	0.79%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.54%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.58%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.17%)	[3]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	1.41%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, charged as follows: 1.00% CDSC if redeemed within 12 months of purchase, and 0.50% CDSC if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	710
3 years	rr_ExpenseExampleYear03	1,029
5 years	rr_ExpenseExampleYear05	1,371
10 years	rr_ExpenseExampleYear10	2,332
1 year	rr_ExpenseExampleNoRedemptionYear01	710
3 years	rr_ExpenseExampleNoRedemptionYear03	1,029
5 years	rr_ExpenseExampleNoRedemptionYear05	1,371
10 years	rr_ExpenseExampleNoRedemptionYear10	2,332
Columbia Overseas Value Fund | Class B
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	5.00%	[4]
Management fees	rr_ManagementFeesOverAssets	0.79%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.54%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	2.33%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.17%)	[3]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	2.16%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge decreases over time.
1 year	rr_ExpenseExampleYear01	719
3 years	rr_ExpenseExampleYear03	1,011
5 years	rr_ExpenseExampleYear05	1,430
10 years	rr_ExpenseExampleYear10	2,465
1 year	rr_ExpenseExampleNoRedemptionYear01	219
3 years	rr_ExpenseExampleNoRedemptionYear03	711
5 years	rr_ExpenseExampleNoRedemptionYear05	1,230
10 years	rr_ExpenseExampleNoRedemptionYear10	2,465
Columbia Overseas Value Fund | Class C
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[5]
Management fees	rr_ManagementFeesOverAssets	0.79%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.54%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	2.33%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.17%)	[3]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	2.16%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge applies to redemptions within one year of purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	319
3 years	rr_ExpenseExampleYear03	711
5 years	rr_ExpenseExampleYear05	1,230
10 years	rr_ExpenseExampleYear10	2,653
1 year	rr_ExpenseExampleNoRedemptionYear01	219
3 years	rr_ExpenseExampleNoRedemptionYear03	711
5 years	rr_ExpenseExampleNoRedemptionYear05	1,230
10 years	rr_ExpenseExampleNoRedemptionYear10	2,653
Columbia Overseas Value Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.79%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.54%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.33%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.37%)	[3]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	0.96%
1 year	rr_ExpenseExampleYear01	98
3 years	rr_ExpenseExampleYear03	385
5 years	rr_ExpenseExampleYear05	693
10 years	rr_ExpenseExampleYear10	1,569
1 year	rr_ExpenseExampleNoRedemptionYear01	98
3 years	rr_ExpenseExampleNoRedemptionYear03	385
5 years	rr_ExpenseExampleNoRedemptionYear05	693
10 years	rr_ExpenseExampleNoRedemptionYear10	1,569
1 Year	rr_AverageAnnualReturnYear01	17.86%
Life of Fund	rr_AverageAnnualReturnSinceInception	(2.60%)
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 31, 2011
Columbia Overseas Value Fund | Class K
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.79%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.59%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.38%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.12%)	[3]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	1.26%
1 year	rr_ExpenseExampleYear01	128
3 years	rr_ExpenseExampleYear03	425
5 years	rr_ExpenseExampleYear05	744
10 years	rr_ExpenseExampleYear10	1,647
1 year	rr_ExpenseExampleNoRedemptionYear01	128
3 years	rr_ExpenseExampleNoRedemptionYear03	425
5 years	rr_ExpenseExampleNoRedemptionYear05	744
10 years	rr_ExpenseExampleNoRedemptionYear10	1,647
Columbia Overseas Value Fund | Class R
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.79%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.50%
Other expenses	rr_OtherExpensesOverAssets	0.54%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.83%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.17%)	[3]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	1.66%
1 year	rr_ExpenseExampleYear01	169
3 years	rr_ExpenseExampleYear03	559
5 years	rr_ExpenseExampleYear05	975
10 years	rr_ExpenseExampleYear10	2,134
1 year	rr_ExpenseExampleNoRedemptionYear01	169
3 years	rr_ExpenseExampleNoRedemptionYear03	559
5 years	rr_ExpenseExampleNoRedemptionYear05	975
10 years	rr_ExpenseExampleNoRedemptionYear10	2,134
Columbia Overseas Value Fund | Class W
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.79%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.54%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.58%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.17%)	[3]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	1.41%
1 year	rr_ExpenseExampleYear01	144
3 years	rr_ExpenseExampleYear03	482
5 years	rr_ExpenseExampleYear05	844
10 years	rr_ExpenseExampleYear10	1,864
1 year	rr_ExpenseExampleNoRedemptionYear01	144
3 years	rr_ExpenseExampleNoRedemptionYear03	482
5 years	rr_ExpenseExampleNoRedemptionYear05	844
10 years	rr_ExpenseExampleNoRedemptionYear10	1,864
1 Year	rr_AverageAnnualReturnYear01	17.40%
Life of Fund	rr_AverageAnnualReturnSinceInception	(2.77%)
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 31, 2011
Columbia Overseas Value Fund | Class Z
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.79%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.54%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.33%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.17%)	[3]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	1.16%
1 year	rr_ExpenseExampleYear01	118
3 years	rr_ExpenseExampleYear03	405
5 years	rr_ExpenseExampleYear05	713
10 years	rr_ExpenseExampleYear10	1,587
1 year	rr_ExpenseExampleNoRedemptionYear01	118
3 years	rr_ExpenseExampleNoRedemptionYear03	405
5 years	rr_ExpenseExampleNoRedemptionYear05	713
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 1,587
2009	rr_AnnualReturn2009	33.73%	[6]
2010	rr_AnnualReturn2010	4.64%	[6]
2011	rr_AnnualReturn2011	(10.38%)	[6]
2012	rr_AnnualReturn2012	17.80%	[6]
Year to Date Return, Label	rr_YearToDateReturnLabel	Year to Date return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	3.21%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	32.29%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2011
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(18.87%)
1 Year	rr_AverageAnnualReturnYear01	17.80%
Life of Fund	rr_AverageAnnualReturnSinceInception	(2.62%)
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 31, 2008
Columbia Overseas Value Fund | returns after taxes on distributions | Class Z
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	17.65%
Life of Fund	rr_AverageAnnualReturnSinceInception	(2.98%)
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 31, 2008
Columbia Overseas Value Fund | returns after taxes on distributions and sale of Fund shares | Class Z
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	12.35%
Life of Fund	rr_AverageAnnualReturnSinceInception	(2.15%)
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 31, 2008
Columbia Overseas Value Fund | MSCI EAFE Value Index (Net) (reflects reinvested dividends net of withholding taxes but reflects no deductions for fees, expenses or other taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	17.69%
Life of Fund	rr_AverageAnnualReturnSinceInception	(2.50%)

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, charged as follows: 1.00% CDSC if redeemed within 12 months of purchase, and 0.50% CDSC if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] Other expenses for Class W and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class A, Class B, Class C, Class K and Class R are based on estimated amounts for the Fund's current fiscal year.

[3] Columbia Management Investment Advisers, LLC and certain of its affiliates have contractually agreed to waive fees and/or to reimburse expenses (excluding certain fees and expenses, such as transaction costs and certain other investment related expenses, interest, taxes, acquired fund fees and expenses, and extraordinary expenses) until June 30, 2014, unless sooner terminated at the sole discretion of the Fund's Board of Trustees. Under this agreement, the Fund's net operating expenses, subject to applicable exclusions, will not exceed the annual rates of 1.41% for Class A, 2.16% for Class B, 2.16% for Class C, 0.96% for Class I, 1.26% for Class K, 1.66% for Class R, 1.41% for Class W, and 1.16% for Class Z.

[4] This charge decreases over time.

[5] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

[6] Year to Date return as of March 31, 2013: 3.21%

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	COLUMBIA FUNDS SERIES TRUST
Prospectus Date	rr_ProspectusDate	Jul. 01, 2013
Columbia Large Cap Core Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Summary of the Fund
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Columbia Large Cap Core Fund (the Fund) seeks long-term capital appreciation.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 18 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	June 30, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund may pay 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 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 147% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	147.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 18 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 50,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	other expenses for Class R5 are based on estimated amounts for the Fund’s current fiscal year.
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Other expenses for Class A, Class B, Class C, Class W and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that: you invest $10,000 in the applicable class of Fund shares for the periods indicated, your investment has a 5% return each year, and the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above. Since the waivers and/or reimbursements shown in the Annual Fund Operating Expenses table above expire as indicated in the preceding table, they are only reflected in the 1 year example and the first year of the other examples. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in securities of companies that have market capitalizations, at the time of purchase, in the range of companies in the Standard & Poor’s (S&P) 500 Index (the Index). The market capitalization range of the companies included within the Index was $1.8 billion to $422.3 billion as of May 31, 2013. The Fund may invest up to 20% of its total assets in foreign securities. The Fund normally invests in common stocks, preferred stocks and convertible securities like warrants and rights and may invest in exchange-traded funds. The Fund may invest in derivatives, including options and other derivative instruments. The Fund may invest in derivatives for both hedging and non-hedging purposes, including, for example, to seek to enhance returns or as a substitute for a position in an underlying asset. The Fund’s portfolio may from time to time emphasize one or more economic sectors, which may include, among other sectors, the technology sector. The Fund’s investment strategy may involve the frequent trading of portfolio securities. This may cause the Fund to incur higher transaction costs (which may adversely affect the Fund’s performance) and may increase taxable distributions for shareholders.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down. Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money. Convertible Securities Risk. 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 also be forced to convert a convertible security at an inopportune time, which may decrease the Fund’s return. Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund. Derivatives Risk/Options Risk. If the Fund sells a put option, there is a risk that the Fund may be required to buy the underlying asset at a disadvantageous price. If the Fund sells a call option, there is a risk that the Fund may be required to sell the underlying asset at a disadvantageous price, and if the call option sold is not covered (for example, by owning the underlying asset), the Fund's losses are potentially unlimited. These transactions involve other risks, including counterparty risk and hedging risk. Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar. Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies. Frequent Trading Risk.  The portfolio managers may actively and frequently trade investments in the Fund's portfolio to carry out its investment strategies. Frequent trading of investments increases the possibility that the Fund, as relevant, will realize taxable capital gains (including short-term capital gains, which are generally taxable to shareholders at higher rates than long-term capital gains for U.S. federal income tax purposes), which could reduce the Fund's after-tax return. Frequent trading can also mean higher brokerage and other transaction costs, which could reduce the Fund's return. The trading costs and tax effects associated with portfolio turnover may adversely affect the Fund’s performance. Investing in Other Funds Risk. The Fund’s investment in other funds (affiliated and/or unaffiliated funds, including exchange-traded funds (ETFs)) subjects the Fund to the investment performance (positive or negative) and risks of these underlying funds in direct proportion to the Fund’s investment therein. The performance of underlying funds could be adversely affected if other entities that invest in the same underlying funds make relatively large investments or redemptions in such underlying funds. The Fund, and its shareholders, indirectly bear a portion of the expenses of any funds in which the Fund invests. Because the expenses and costs of a fund are shared by its investors, redemptions by other investors in the fund could result in decreased economies of scale and increased operating expenses for such fund. The Investment Manager may have potential conflicts of interest in selecting affiliated underlying funds for investment by the Fund because the fees paid to it by some underlying funds are higher than the fees paid by other underlying funds, as well as a potential conflict in selecting affiliated funds over unaffiliated funds. Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors. Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities. Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within an economic sector. Companies in the same economic sector may be similarly affected by economic, regulatory, political or market events or conditions, making the Fund more vulnerable to unfavorable developments in that economic  sector than funds that invest more broadly. The more a fund diversifies its investments, the more it spreads risk and potentially reduces the risks of loss and volatility. Technology and Technology-Related Investment Risk. Companies in the technology sector and technology-related sectors are subject to significant competitive pressures, such as aggressive pricing of their products or services, new market entrants, competition for market share, short product cycles due to an accelerated rate of technological developments and the potential for limited earnings and/or falling profit margins. These companies also face the risks that new services, equipment or technologies will not be accepted by consumers and businesses or will become rapidly obsolete. These factors can affect the profitability of these companies and, as a result, the value of their securities. Also, patent protection is integral to the success of many companies in these sectors, and profitability can be affected materially by, among other things, the cost of obtaining (or failing to obtain) patent approvals, the cost of litigating patent infringement and the loss of patent protection for products (which significantly increases pricing pressures and can materially reduce profitability with respect to such products). In addition, many technology companies have limited operating histories. Prices of these companies' securities historically have been more volatile than other securities, especially over the short term. Because the Fund concentrates its investments (or, invests a significant portion of its net assets) in securities of technology and technology-related companies, the Fund's price may be more volatile than a fund that is invested in a more diverse range of market sectors.
Risk Lose Money [Text]	rr_RiskLoseMoney	There is no assurance that the Fund will achieve its investment objective and you may lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance. The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class Z shares (adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities. The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	800.345.6611
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	columbiamanagement.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Year by Year Total Return (%) as of December 31 Each Year
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best and Worst Quarterly Returns During the Period Shown in the Bar Chart Best                              2nd Quarter 2009                            14.67% Worst                           4th Quarter 2008                            -20.25%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs).
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	The after-tax returns are shown only for Class A shares and will vary for other share classes.
Columbia Large Cap Core Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	5.75%
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[1]
Management fees	rr_ManagementFeesOverAssets	0.69%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.29%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.23%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.05%)	[3]
Total annual Fund operating expenses after fee waivers and/or expense reimbursements	rr_NetExpensesOverAssets	1.18%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	688
3 years	rr_ExpenseExampleYear03	938
5 years	rr_ExpenseExampleYear05	1,207
10 years	rr_ExpenseExampleYear10	1,974
1 year	rr_ExpenseExampleNoRedemptionYear01	688
3 years	rr_ExpenseExampleNoRedemptionYear03	938
5 years	rr_ExpenseExampleNoRedemptionYear05	1,207
10 years	rr_ExpenseExampleNoRedemptionYear10	1,974
2003	rr_AnnualReturn2003	27.30%	[4]
2004	rr_AnnualReturn2004	8.07%	[4]
2005	rr_AnnualReturn2005	5.90%	[4]
2006	rr_AnnualReturn2006	15.42%	[4]
2007	rr_AnnualReturn2007	9.97%	[4]
2008	rr_AnnualReturn2008	(35.89%)	[4]
2009	rr_AnnualReturn2009	24.00%	[4]
2010	rr_AnnualReturn2010	13.76%	[4]
2011	rr_AnnualReturn2011	(2.25%)	[4]
2012	rr_AnnualReturn2012	17.28%	[4]
Year to Date Return, Label	rr_YearToDateReturnLabel	Year to Date return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	9.27%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	14.67%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(20.25%)
1 Year	rr_AverageAnnualReturnYear01	10.54%
5 Years	rr_AverageAnnualReturnYear05	(0.46%)
10 Years	rr_AverageAnnualReturnYear10	6.09%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 02, 1999
Columbia Large Cap Core Fund | Class B
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	5.00%	[5]
Management fees	rr_ManagementFeesOverAssets	0.69%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.29%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.98%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.05%)	[3]
Total annual Fund operating expenses after fee waivers and/or expense reimbursements	rr_NetExpensesOverAssets	1.93%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge decreases over time.
1 year	rr_ExpenseExampleYear01	696
3 years	rr_ExpenseExampleYear03	917
5 years	rr_ExpenseExampleYear05	1,263
10 years	rr_ExpenseExampleYear10	2,108
1 year	rr_ExpenseExampleNoRedemptionYear01	196
3 years	rr_ExpenseExampleNoRedemptionYear03	617
5 years	rr_ExpenseExampleNoRedemptionYear05	1,063
10 years	rr_ExpenseExampleNoRedemptionYear10	2,108
1 Year	rr_AverageAnnualReturnYear01	11.37%
5 Years	rr_AverageAnnualReturnYear05	(0.41%)
10 Years	rr_AverageAnnualReturnYear10	5.91%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 02, 1999
Columbia Large Cap Core Fund | Class C
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[6]
Management fees	rr_ManagementFeesOverAssets	0.69%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.29%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.98%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.05%)	[3]
Total annual Fund operating expenses after fee waivers and/or expense reimbursements	rr_NetExpensesOverAssets	1.93%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge applies to redemptions within one year of purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	296
3 years	rr_ExpenseExampleYear03	617
5 years	rr_ExpenseExampleYear05	1,063
10 years	rr_ExpenseExampleYear10	2,302
1 year	rr_ExpenseExampleNoRedemptionYear01	196
3 years	rr_ExpenseExampleNoRedemptionYear03	617
5 years	rr_ExpenseExampleNoRedemptionYear05	1,063
10 years	rr_ExpenseExampleNoRedemptionYear10	2,302
1 Year	rr_AverageAnnualReturnYear01	15.47%
5 Years	rr_AverageAnnualReturnYear05	(0.03%)
10 Years	rr_AverageAnnualReturnYear10	5.91%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 02, 1999
Columbia Large Cap Core Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.69%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.10%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.79%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.01%)	[3]
Total annual Fund operating expenses after fee waivers and/or expense reimbursements	rr_NetExpensesOverAssets	0.78%
1 year	rr_ExpenseExampleYear01	80
3 years	rr_ExpenseExampleYear03	251
5 years	rr_ExpenseExampleYear05	438
10 years	rr_ExpenseExampleYear10	977
1 year	rr_ExpenseExampleNoRedemptionYear01	80
3 years	rr_ExpenseExampleNoRedemptionYear03	251
5 years	rr_ExpenseExampleNoRedemptionYear05	438
10 years	rr_ExpenseExampleNoRedemptionYear10	977
1 Year	rr_AverageAnnualReturnYear01	17.72%
5 Years	rr_AverageAnnualReturnYear05	1.04%
10 Years	rr_AverageAnnualReturnYear10	7.01%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 27, 2010
Columbia Large Cap Core Fund | Class R5
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.69%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.15%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.84%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.01%)	[3]
Total annual Fund operating expenses after fee waivers and/or expense reimbursements	rr_NetExpensesOverAssets	0.83%
1 year	rr_ExpenseExampleYear01	85
3 years	rr_ExpenseExampleYear03	267
5 years	rr_ExpenseExampleYear05	465
10 years	rr_ExpenseExampleYear10	1,036
1 year	rr_ExpenseExampleNoRedemptionYear01	85
3 years	rr_ExpenseExampleNoRedemptionYear03	267
5 years	rr_ExpenseExampleNoRedemptionYear05	465
10 years	rr_ExpenseExampleNoRedemptionYear10	1,036
1 Year	rr_AverageAnnualReturnYear01	17.60%
5 Years	rr_AverageAnnualReturnYear05	0.97%
10 Years	rr_AverageAnnualReturnYear10	6.97%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia Large Cap Core Fund | Class W
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.69%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.29%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.23%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.05%)	[3]
Total annual Fund operating expenses after fee waivers and/or expense reimbursements	rr_NetExpensesOverAssets	1.18%
1 year	rr_ExpenseExampleYear01	120
3 years	rr_ExpenseExampleYear03	385
5 years	rr_ExpenseExampleYear05	671
10 years	rr_ExpenseExampleYear10	1,484
1 year	rr_ExpenseExampleNoRedemptionYear01	120
3 years	rr_ExpenseExampleNoRedemptionYear03	385
5 years	rr_ExpenseExampleNoRedemptionYear05	671
10 years	rr_ExpenseExampleNoRedemptionYear10	1,484
1 Year	rr_AverageAnnualReturnYear01	17.30%
5 Years	rr_AverageAnnualReturnYear05	0.76%
10 Years	rr_AverageAnnualReturnYear10	6.74%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 27, 2010
Columbia Large Cap Core Fund | Class Z
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.69%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.29%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.98%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.05%)	[3]
Total annual Fund operating expenses after fee waivers and/or expense reimbursements	rr_NetExpensesOverAssets	0.93%
1 year	rr_ExpenseExampleYear01	95
3 years	rr_ExpenseExampleYear03	307
5 years	rr_ExpenseExampleYear05	537
10 years	rr_ExpenseExampleYear10	1,197
1 year	rr_ExpenseExampleNoRedemptionYear01	95
3 years	rr_ExpenseExampleNoRedemptionYear03	307
5 years	rr_ExpenseExampleNoRedemptionYear05	537
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 1,197
1 Year	rr_AverageAnnualReturnYear01	17.56%
5 Years	rr_AverageAnnualReturnYear05	0.96%
10 Years	rr_AverageAnnualReturnYear10	6.96%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 02, 1998
Columbia Large Cap Core Fund | returns after taxes on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	9.82%
5 Years	rr_AverageAnnualReturnYear05	(0.75%)
10 Years	rr_AverageAnnualReturnYear10	5.78%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 02, 1999
Columbia Large Cap Core Fund | returns after taxes on distributions and sale of Fund shares | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	7.80%
5 Years	rr_AverageAnnualReturnYear05	(0.42%)
10 Years	rr_AverageAnnualReturnYear10	5.30%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 02, 1999
Columbia Large Cap Core Fund | S&P 500 Index (reflects no deductions for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	16.00%
5 Years	rr_AverageAnnualReturnYear05	1.66%
10 Years	rr_AverageAnnualReturnYear10	7.10%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] Other expenses for Class A, Class B, Class C, Class W and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R5 are based on estimated amounts for the Fund's current fiscal year.

[3] Columbia Management Investment Advisers, LLC and certain of its affiliates have contractually agreed to waive fees and/or to reimburse expenses (excluding certain fees and expenses, such as transaction costs and certain other investment related expenses, interest, taxes, acquired fund fees and expenses, and extraordinary expenses) until June 30, 2014, unless sooner terminated at the sole discretion of the Fund's Board of Trustees. Under this agreement, the Fund's net operating expenses, subject to applicable exclusions, will not exceed the annual rates of 1.18% for Class A, 1.93% for Class B, 1.93% for Class C, 0.78% for Class I, 0.83% for Class R5, 1.18% for Class W and 0.93% for Class Z.

[4] Year to Date return as of March 31, 2013: 9.27%

[5] This charge decreases over time.

[6] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

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Columbia Overseas Value Fund

Summary of the Fund

Investment Objective

Columbia Overseas Value Fund (the Fund) seeks long-term capital appreciation.

Fees and Expenses of the Fund

This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 19 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Columbia Overseas Value Fund	Class A		Class B		Class C		Class I	Class K	Class R	Class W	Class Z
Maximum sales charge (load) imposed on purchases (as a % of offering price)	5.75%		none		none		none	none	none	none	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	1.00%	[1]	5.00%	[2]	1.00%	[3]	none	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Columbia Overseas Value Fund		Class A	Class B	Class C	Class I	Class K	Class R	Class W	Class Z
Management fees		0.79%	0.79%	0.79%	0.79%	0.79%	0.79%	0.79%	0.79%
Distribution and/or service (12b-1) fees		0.25%	1.00%	1.00%	none	none	0.50%	0.25%	none
Other expenses	[1]	0.54%	0.54%	0.54%	0.54%	0.59%	0.54%	0.54%	0.54%
Total annual Fund operating expenses		1.58%	2.33%	2.33%	1.33%	1.38%	1.83%	1.58%	1.33%
Less: Fee waivers and/or expense reimbursements	[2]	(0.17%)	(0.17%)	(0.17%)	(0.37%)	(0.12%)	(0.17%)	(0.17%)	(0.17%)
Total annual Fund operating expenses after fee waivers and/or reimbursements		1.41%	2.16%	2.16%	0.96%	1.26%	1.66%	1.41%	1.16%

Example

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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that:

• you invest $10,000 in the applicable class of Fund shares for the periods indicated,

• your investment has a 5% return each year, and

• the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above.

Since the waivers and/or reimbursements shown in the Annual Fund Operating Expenses table above expire as indicated in the preceding table, they are only reflected in the 1 year example and the first year of the other examples. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:

Expense Example Columbia Overseas Value Fund (USD $)	1 year	3 years	5 years	10 years
Class A	710	1,029	1,371	2,332
Class B	719	1,011	1,430	2,465
Class C	319	711	1,230	2,653
Class I	98	385	693	1,569
Class K	128	425	744	1,647
Class R	169	559	975	2,134
Class W	144	482	844	1,864
Class Z	118	405	713	1,587

Expense Example, No Redemption Columbia Overseas Value Fund (USD $)	1 year	3 years	5 years	10 years
Class A	710	1,029	1,371	2,332
Class B	219	711	1,230	2,465
Class C	219	711	1,230	2,653
Class I	98	385	693	1,569
Class K	128	425	744	1,647
Class R	169	559	975	2,134
Class W	144	482	844	1,864
Class Z	118	405	713	1,587

Portfolio Turnover

The Fund may pay 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 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 46% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund invests at least 80% of total assets (including the amount of any borrowings for investment purposes) in equity securities of foreign companies that have market capitalizations of more than $1 billion at the time of purchase. The Fund typically invests in foreign companies in at least three countries, other than the United States, at any one time and may invest in emerging markets. The Fund may invest directly in foreign securities or indirectly through closed-end investment companies and depositary receipts.

The Fund may invest in currency forwards, futures and options for both hedging and non-hedging purposes, including, for example, to seek to enhance returns or, in certain unusual circumstances, when holding a derivative is deemed preferable to holding the underlying asset.

The Fund has the following limits on its investments, which are applied at the time an investment is made. The Fund:

• normally invests no more than 5% of its total assets in a single security;

• typically invests up to the greater of (i) 20% of its total assets in a single country or industry or (ii) 150% of the weighting of a single country or industry in the MSCI Europe, Australasia, Far East (MSCI EAFE) Value Index (limited to less than 25% of its total assets in a single industry, other than U.S. Government obligations); and

• generally may not invest more than 20% of its total assets in emerging markets.

The investment manager combines fundamental and quantitative analysis with risk management in identifying value opportunities and constructing the Fund's portfolio.

Principal Risks

An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down.

Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money.

Depositary Receipts Risks. Depositary receipts are receipts issued by a bank or trust company and evidence of ownership of underlying securities issued by foreign companies. Some foreign securities are traded in the form of American Depositary Receipts (ADRs). Depositary receipts involve the risks of other investments in foreign securities, including 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. In addition, ADR holders may not have all the legal rights of shareholders and may experience difficulty in receiving shareholder communications.

Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund.

Derivatives Risk/Forward Foreign Currency Contracts Risk. These instruments are a type of derivative contract whereby the Fund may agree to buy or sell a country’s or region’s currency at a specific price on a specific date in the future. These contracts may fall in value due to foreign market downswings or foreign currency value fluctuations. The Fund’s investment or hedging strategies may not achieve their objective. Investment in these instruments also subjects the Fund to counterparty risk.

Derivatives Risk/Futures Contracts Risk. The loss that may be incurred in entering into futures contracts may exceed the amount of the premium paid and may be potentially unlimited. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value (NAV). Additionally, as a result of the low collateral deposits normally involved in futures trading, a relatively small price movement in a futures contract may result in substantial losses to the Fund. Futures contracts may be illiquid. Furthermore, exchanges may limit fluctuations in futures contract prices during a trading session by imposing a maximum permissible price movement on each futures contract. The Fund may be disadvantaged if it is prohibited from executing a trade outside the daily permissible price movement. Futures contracts executed on foreign exchanges may not provide the same protection as U.S. exchanges. These transactions involve additional risks, including counterparty risk, hedging risk and pricing risk.

Derivatives Risk/Options Risk. If the Fund sells a put option, there is a risk that the Fund may be required to buy the underlying asset at a disadvantageous price. If the Fund sells a call option, there is a risk that the Fund may be required to sell the underlying asset at a disadvantageous price, and if the call option sold is not covered (for example, by owning the underlying asset), the Fund's losses are potentially unlimited. These transactions involve other risks, including counterparty risk and hedging risk.

Emerging Market Securities Risk. Securities issued by foreign governments or companies in emerging market countries are more likely to have greater exposure to the risks of investing in foreign securities that are described in Foreign Securities Risk. In addition, emerging market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Their economies are usually less mature and their securities markets are typically less developed with more limited trading activity (i.e., lower trading volumes and less liquidity) than more developed countries. Emerging market securities tend to be more volatile than securities in more developed markets. Many emerging market countries are heavily dependent on international trade and have fewer trading partners, which makes them more sensitive to world commodity prices and economic downturns in other countries, and some have a higher risk of currency devaluations.

Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar.

Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies.

Investing in Other Funds Risk. The Fund’s investment in other funds (affiliated and/or unaffiliated funds, including exchange-traded funds (ETFs)) subjects the Fund to the investment performance (positive or negative) and risks of these underlying funds in direct proportion to the Fund’s investment therein. The performance of underlying funds could be adversely affected if other entities that invest in the same underlying funds make relatively large investments or redemptions in such underlying funds. The Fund, and its shareholders, indirectly bear a portion of the expenses of any funds in which the Fund invests. Because the expenses and costs of a fund are shared by its investors, redemptions by other investors in the fund could result in decreased economies of scale and increased operating expenses for such fund. The Investment Manager may have potential conflicts of interest in selecting affiliated underlying funds for investment by the Fund because the fees paid to it by some underlying funds are higher than the fees paid by other underlying funds, as well as a potential conflict in selecting affiliated funds over unaffiliated funds.

Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors.

Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities.

Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within an economic sector, including the financial services sector. Companies in the same economic sector may be similarly affected by economic, regulatory, political or market events or conditions, making the Fund more vulnerable to unfavorable developments in that economic sector than funds that invest more broadly. The more a fund diversifies its investments, the more it spreads risk and potentially reduces the risks of loss and volatility. Because the Fund’s portfolio managers may invest significantly in the financial services sector, the Fund may be more susceptible to the particular risks of the financial services sector than if the Fund were invested in a wider variety of companies in unrelated industries.

Small- and Mid-Cap Company Securities Risk. Investments in small- and mid-capitalization companies (small- and mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small- and mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small- and mid-cap companies may be less liquid and more volatile than the securities of larger companies.

Value Securities Risk. Value securities are securities of companies that may have experienced, for example, adverse business, industry or other developments or may be subject to special risks that have caused the securities to be out of favor and, in turn, potentially undervalued. The market value of a portfolio security may not meet the portfolio manager's perceived value assessment of that security, or may decline in price, even though the portfolio manager(s) believe(s) the securities are already undervalued. There is also a risk that it may take longer than expected for the value of these investments to rise to the portfolio manager’s perceived value. In addition, value securities, at times, may not perform as well as growth securities or the stock market in general, and may be out of favor with investors for varying periods of time.

Performance Information

The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class Z share performance has varied for each full calendar year shown. Class Z share performance is shown in the bar chart because the Fund has less than ten calendar years of performance and Class Z shares are the oldest share class of the Fund. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.

The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class Z shares (adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Class A, Class B, Class C and Class K shares of the Fund commenced operations after the periods ended shown in the table below and, therefore, performance is not yet available. Class R shares of the Fund did not commence operations prior to the date of this prospectus and, therefore, performance is not yet available. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities.

The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class Z shares and will vary for other share classes. Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares. After-tax returns are shown for Class Z shares because the Fund has less than ten calendar years of performance and Class Z shares are the oldest share class of the Fund.

The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.

Year by Year Total Return (%)
as of December 31 Each Year

Best and Worst Quarterly Returns
During the Period Shown in the Bar Chart

Best                              2nd Quarter 2009                            32.29%


Worst                           3rd Quarter 2011                            -18.87%

Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)

Average Annual Total Returns Columbia Overseas Value Fund	Share Class Inception Date	1 Year	Life of Fund
Class Z shares	Mar. 31, 2008	17.80%	(2.62%)
Class Z shares returns after taxes on distributions	Mar. 31, 2008	17.65%	(2.98%)
Class Z shares returns after taxes on distributions and sale of Fund shares	Mar. 31, 2008	12.35%	(2.15%)
Class I shares	Mar. 31, 2011	17.86%	(2.60%)
Class W shares	Mar. 31, 2011	17.40%	(2.77%)
MSCI EAFE Value Index (Net) (reflects reinvested dividends net of withholding taxes but reflects no deductions for fees, expenses or other taxes)		17.69%	(2.50%)

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, charged as follows: 1.00% CDSC if redeemed within 12 months of purchase, and 0.50% CDSC if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] This charge decreases over time.

[3] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

[1] Other expenses for Class W and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class A, Class B, Class C, Class K and Class R are based on estimated amounts for the Fund's current fiscal year.

[2] Columbia Management Investment Advisers, LLC and certain of its affiliates have contractually agreed to waive fees and/or to reimburse expenses (excluding certain fees and expenses, such as transaction costs and certain other investment related expenses, interest, taxes, acquired fund fees and expenses, and extraordinary expenses) until June 30, 2014, unless sooner terminated at the sole discretion of the Fund's Board of Trustees. Under this agreement, the Fund's net operating expenses, subject to applicable exclusions, will not exceed the annual rates of 1.41% for Class A, 2.16% for Class B, 2.16% for Class C, 0.96% for Class I, 1.26% for Class K, 1.66% for Class R, 1.41% for Class W, and 1.16% for Class Z.

[1] Year to Date return as of March 31, 2013: 3.21%

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	COLUMBIA FUNDS SERIES TRUST
Prospectus Date	rr_ProspectusDate	Jul. 01, 2013
Columbia Marsico Growth Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Summary of the Fund
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Columbia Marsico Growth Fund (the Fund) seeks long-term growth of capital.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 18 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund may pay 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 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 90% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	90.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 18 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 50,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	other expenses for Class R4 and Class R5 are based on estimated amounts for the Fund’s current fiscal year.
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Management fees have been restated to reflect contractual changes to the investment management fee rates. Other expenses for Class A, Class B, Class C, Class I, Class R, Class W and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that: you invest $10,000 in the applicable class of Fund shares for the periods indicated, your investment has a 5% return each year, and the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Fund invests primarily in equity securities of large-capitalization companies that have market capitalizations of $5 billion or more at the time of purchase. The Fund generally holds a core position of between 35 and 50 common stocks. The number of securities held by the Fund occasionally may exceed this range, such as when the Fund is accumulating new positions, phasing out and replacing existing positions, or responding to exceptional market conditions. The Fund may invest up to 25% in foreign securities, including in emerging market securities. The core investments of the Fund (i.e., the primary investments held by the Fund over time) generally may include established companies and securities that are expected to offer long-term growth potential. However, the Fund's portfolio also may typically include securities of less mature companies, securities with more aggressive growth characteristics, and securities of companies undergoing significant positive developments, such as, without limitation, the introduction of a new product line, the appointment of a new management team, or an acquisition.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down. Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money. Emerging Market Securities Risk. Securities issued by foreign governments or companies in emerging market countries are more likely to have greater exposure to the risks of investing in foreign securities that are described in Foreign Securities Risk. In addition, emerging market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Their economies are usually less mature and their securities markets are typically less developed with more limited trading activity (i.e., lower trading volumes and less liquidity) than more developed countries. Emerging market securities tend to be more volatile than securities in more developed markets. Many emerging market countries are heavily dependent on international trade and have fewer trading partners, which makes them more sensitive to world commodity prices and economic downturns in other countries, and some have a higher risk of currency devaluations. Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar. Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies. Growth Securities Risk. Growth securities typically trade at a higher multiple of earnings than other types of equity securities. Accordingly, the market values of growth securities may be more sensitive to adverse economic or other circumstances or changes in current or expected earnings than the market values of other types of securities. In addition, growth securities, at times, may not perform as well as value securities or the stock market in general, and may be out of favor with investors for varying periods of time. Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors. Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities. Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within an economic sector. Companies in the same economic sector may be similarly affected by economic, regulatory, political or market events or conditions, making the Fund more vulnerable to unfavorable developments in that economic  sector than funds that invest more broadly. The more a fund diversifies its investments, the more it spreads risk and potentially reduces the risks of loss and volatility. Small- and Mid-Cap Company Securities Risk. Investments in small- and mid-capitalization companies (small- and mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small- and mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small- and mid-cap companies may be less liquid and more volatile than the securities of larger companies.
Risk Lose Money [Text]	rr_RiskLoseMoney	There is no assurance that the Fund will achieve its investment objective and you may lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance. The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (without applicable sales charges and adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities. The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	800.345.6611
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	columbiamanagement.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Year by Year Total Return (%) as of December 31 Each Year
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best and Worst Quarterly Returns During the Period Shown in the Bar Chart Best                              3rd Quarter 2009                            15.92% Worst                          4th Quarter 2008                            -22.85%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs).
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	The after-tax returns are shown only for Class A shares and will vary for other share classes.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares.
Columbia Marsico Growth Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	5.75%
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[1]
Management fees	rr_ManagementFeesOverAssets	0.62%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.31%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.18%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	688
3 years	rr_ExpenseExampleYear03	928
5 years	rr_ExpenseExampleYear05	1,187
10 years	rr_ExpenseExampleYear10	1,924
1 year	rr_ExpenseExampleNoRedemptionYear01	688
3 years	rr_ExpenseExampleNoRedemptionYear03	928
5 years	rr_ExpenseExampleNoRedemptionYear05	1,187
10 years	rr_ExpenseExampleNoRedemptionYear10	1,924
2003	rr_AnnualReturn2003	28.65%	[4]
2004	rr_AnnualReturn2004	15.39%	[4]
2005	rr_AnnualReturn2005	5.85%	[4]
2006	rr_AnnualReturn2006	6.86%	[4]
2007	rr_AnnualReturn2007	13.98%	[4]
2008	rr_AnnualReturn2008	(42.03%)	[4]
2009	rr_AnnualReturn2009	29.08%	[4]
2010	rr_AnnualReturn2010	19.44%	[4]
2011	rr_AnnualReturn2011	(1.77%)	[4]
2012	rr_AnnualReturn2012	12.29%	[4]
Year to Date Return, Label	rr_YearToDateReturnLabel	Year to Date return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	10.51%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Sep. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	15.92%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(22.85%)
1 Year	rr_AverageAnnualReturnYear01	5.83%
5 Years	rr_AverageAnnualReturnYear05	(1.46%)
10 Years	rr_AverageAnnualReturnYear10	5.93%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 1997
Columbia Marsico Growth Fund | Class B
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	5.00%	[5]
Management fees	rr_ManagementFeesOverAssets	0.62%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.31%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.93%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge decreases over time.
1 year	rr_ExpenseExampleYear01	696
3 years	rr_ExpenseExampleYear03	906
5 years	rr_ExpenseExampleYear05	1,242
10 years	rr_ExpenseExampleYear10	2,059
1 year	rr_ExpenseExampleNoRedemptionYear01	196
3 years	rr_ExpenseExampleNoRedemptionYear03	606
5 years	rr_ExpenseExampleNoRedemptionYear05	1,042
10 years	rr_ExpenseExampleNoRedemptionYear10	2,059
1 Year	rr_AverageAnnualReturnYear01	6.38%
5 Years	rr_AverageAnnualReturnYear05	(1.43%)
10 Years	rr_AverageAnnualReturnYear10	5.75%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 1997
Columbia Marsico Growth Fund | Class C
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[6]
Management fees	rr_ManagementFeesOverAssets	0.62%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.31%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.93%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge applies to redemptions within one year of purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	296
3 years	rr_ExpenseExampleYear03	606
5 years	rr_ExpenseExampleYear05	1,042
10 years	rr_ExpenseExampleYear10	2,254
1 year	rr_ExpenseExampleNoRedemptionYear01	196
3 years	rr_ExpenseExampleNoRedemptionYear03	606
5 years	rr_ExpenseExampleNoRedemptionYear05	1,042
10 years	rr_ExpenseExampleNoRedemptionYear10	2,254
1 Year	rr_AverageAnnualReturnYear01	10.42%
5 Years	rr_AverageAnnualReturnYear05	(1.03%)
10 Years	rr_AverageAnnualReturnYear10	5.76%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 1997
Columbia Marsico Growth Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.62%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.09%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.71%
1 year	rr_ExpenseExampleYear01	73
3 years	rr_ExpenseExampleYear03	227
5 years	rr_ExpenseExampleYear05	395
10 years	rr_ExpenseExampleYear10	883
1 year	rr_ExpenseExampleNoRedemptionYear01	73
3 years	rr_ExpenseExampleNoRedemptionYear03	227
5 years	rr_ExpenseExampleNoRedemptionYear05	395
10 years	rr_ExpenseExampleNoRedemptionYear10	883
1 Year	rr_AverageAnnualReturnYear01	12.70%
5 Years	rr_AverageAnnualReturnYear05	(0.06%)
10 Years	rr_AverageAnnualReturnYear10	6.67%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 27, 2010
Columbia Marsico Growth Fund | Class R
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.62%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.50%
Other expenses	rr_OtherExpensesOverAssets	0.31%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.43%
1 year	rr_ExpenseExampleYear01	146
3 years	rr_ExpenseExampleYear03	452
5 years	rr_ExpenseExampleYear05	782
10 years	rr_ExpenseExampleYear10	1,713
1 year	rr_ExpenseExampleNoRedemptionYear01	146
3 years	rr_ExpenseExampleNoRedemptionYear03	452
5 years	rr_ExpenseExampleNoRedemptionYear05	782
10 years	rr_ExpenseExampleNoRedemptionYear10	1,713
1 Year	rr_AverageAnnualReturnYear01	11.95%
5 Years	rr_AverageAnnualReturnYear05	(0.54%)
10 Years	rr_AverageAnnualReturnYear10	6.27%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 23, 2006
Columbia Marsico Growth Fund | Class R4
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.62%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.31%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.93%
1 year	rr_ExpenseExampleYear01	95
3 years	rr_ExpenseExampleYear03	296
5 years	rr_ExpenseExampleYear05	515
10 years	rr_ExpenseExampleYear10	1,143
1 year	rr_ExpenseExampleNoRedemptionYear01	95
3 years	rr_ExpenseExampleNoRedemptionYear03	296
5 years	rr_ExpenseExampleNoRedemptionYear05	515
10 years	rr_ExpenseExampleNoRedemptionYear10	1,143
1 Year	rr_AverageAnnualReturnYear01	12.29%
5 Years	rr_AverageAnnualReturnYear05	(0.29%)
10 Years	rr_AverageAnnualReturnYear10	6.55%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia Marsico Growth Fund | Class R5
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.62%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.14%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.76%
1 year	rr_ExpenseExampleYear01	78
3 years	rr_ExpenseExampleYear03	243
5 years	rr_ExpenseExampleYear05	422
10 years	rr_ExpenseExampleYear10	942
1 year	rr_ExpenseExampleNoRedemptionYear01	78
3 years	rr_ExpenseExampleNoRedemptionYear03	243
5 years	rr_ExpenseExampleNoRedemptionYear05	422
10 years	rr_ExpenseExampleNoRedemptionYear10	942
1 Year	rr_AverageAnnualReturnYear01	12.31%
5 Years	rr_AverageAnnualReturnYear05	(0.28%)
10 Years	rr_AverageAnnualReturnYear10	6.56%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia Marsico Growth Fund | Class W
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.62%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.31%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.18%
1 year	rr_ExpenseExampleYear01	120
3 years	rr_ExpenseExampleYear03	375
5 years	rr_ExpenseExampleYear05	649
10 years	rr_ExpenseExampleYear10	1,432
1 year	rr_ExpenseExampleNoRedemptionYear01	120
3 years	rr_ExpenseExampleNoRedemptionYear03	375
5 years	rr_ExpenseExampleNoRedemptionYear05	649
10 years	rr_ExpenseExampleNoRedemptionYear10	1,432
1 Year	rr_AverageAnnualReturnYear01	12.26%
5 Years	rr_AverageAnnualReturnYear05	(0.28%)
10 Years	rr_AverageAnnualReturnYear10	6.56%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 27, 2010
Columbia Marsico Growth Fund | Class Z
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.62%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.31%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.93%
1 year	rr_ExpenseExampleYear01	95
3 years	rr_ExpenseExampleYear03	296
5 years	rr_ExpenseExampleYear05	515
10 years	rr_ExpenseExampleYear10	1,143
1 year	rr_ExpenseExampleNoRedemptionYear01	95
3 years	rr_ExpenseExampleNoRedemptionYear03	296
5 years	rr_ExpenseExampleNoRedemptionYear05	515
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 1,143
1 Year	rr_AverageAnnualReturnYear01	12.48%
5 Years	rr_AverageAnnualReturnYear05	(0.04%)
10 Years	rr_AverageAnnualReturnYear10	6.82%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 1997
Columbia Marsico Growth Fund | returns after taxes on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	5.78%
5 Years	rr_AverageAnnualReturnYear05	(1.49%)
10 Years	rr_AverageAnnualReturnYear10	5.91%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 1997
Columbia Marsico Growth Fund | returns after taxes on distributions and sale of Fund shares | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	3.85%
5 Years	rr_AverageAnnualReturnYear05	(1.24%)
10 Years	rr_AverageAnnualReturnYear10	5.21%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 1997
Columbia Marsico Growth Fund | S&P 500 Index (reflects no deductions for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	16.00%
5 Years	rr_AverageAnnualReturnYear05	1.66%
10 Years	rr_AverageAnnualReturnYear10	7.10%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] Management fees have been restated to reflect contractual changes to the investment management fee rates.

[3] Other expenses for Class A, Class B, Class C, Class I, Class R, Class W and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R4 and Class R5 are based on estimated amounts for the Fund's current fiscal year.

[4] Year to Date return as of March 31, 2013: 10.51%

[5] This charge decreases over time.

[6] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	COLUMBIA FUNDS SERIES TRUST
Prospectus Date	rr_ProspectusDate	Jul. 01, 2013
Columbia Convertible Securities Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Summary of the Fund
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Columbia Convertible Securities Fund (the Fund) seeks total return, consisting of capital appreciation and current income.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 18 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	June 30, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund may pay 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 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 71% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	71.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 18 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 50,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	other expenses for Class R4 and Class R5 are based on estimated amounts for the Fund’s current fiscal year.
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Other expenses for Class A, Class B, Class C, Class R, Class W and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that: you invest $10,000 in the applicable class of Fund shares for the periods indicated, your investment has a 5% return each year, and the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above. Since the waivers and/or reimbursements shown in the Annual Fund Operating Expenses table above expire as indicated in the preceding table, they are only reflected in the 1 year example and the first year of the other examples. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in convertible securities. The Fund may invest up to 15% of its total assets in Eurodollar convertible securities and up to an additional 20% of its total assets in foreign securities. Most convertible securities are not investment grade-rated. Convertible securities rated below investment grade may be referred to as “junk bonds.” The Fund also may invest in directly in equity securities. The Fund looks for opportunities to participate in the potential growth of underlying common stocks, while seeking to earn income that is generally higher than the income those stocks provide. The Fund may sell common stocks short against positions in which the Fund has directly invested in convertible securities with no more than 10% of its assets. The Fund also may invest in private placements.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down. Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money. Convertible Securities Risk. 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 also be forced to convert a convertible security at an inopportune time, which may decrease the Fund’s return. Credit Risk. Credit risk is the risk that the issuer of a fixed-income security may or will default or otherwise become unable or unwilling, or is perceived to be unable or unwilling, to honor a financial obligation, such as making payments to the Fund when due. If the Fund purchases unrated securities, or if the rating of a security is lowered after purchase, the Fund will depend on analysis of credit risk more heavily than usual. Unrated securities held by the Fund may present increased credit risk as compared to higher-rated securities. Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar. Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies. Interest Rate Risk. Interest rate risk is the risk of losses attributable to changes in interest rates. In general, if prevailing interest rates rise, the values of debt securities will tend to fall, and if interest rates fall, the values of debt securities will tend to rise. Changes in the value of a debt security usually will not affect the amount of income the Fund receives from it but may affect the value of the Fund's shares. In general, the longer the maturity or duration of a debt security, the greater its sensitivity to changes in interest rates. Interest rate declines also may increase prepayments of debt obligations, which, in turn, would increase prepayment risk. As interest rates rise or spreads widen, the likelihood of prepayment decreases. Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors. Low and Below Investment Grade (High-Yield) Securities Risk. Securities with the lowest investment grade rating, securities rated below investment grade (commonly called “high-yield” or “junk” bonds) and unrated securities of comparable quality expose the Fund to a greater risk of loss of principal and income than a fund that invests solely or primarily in investment grade securities. In addition, these investments have greater price fluctuations, are less liquid and are more likely to experience a default than higher-rated securities. High-yield securities are considered to be predominantly speculative with respect to the issuer’s capacity to pay interest and repay principal. Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities. Prepayment and Extension Risk. Prepayment and extension risk is the risk that a loan, bond or other security or investment might be called or otherwise converted, prepaid or redeemed before maturity, and the portfolio managers may not be able to invest the proceeds in other investments 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’s investments are locked in at a lower rate for a longer period of time. Rule 144A Securities Risk. The Fund may invest significantly in Rule 144A securities that are determined to be liquid in accordance with procedures adopted by the Fund’s Board. However, an insufficient number of qualified institutional buyers interested in purchasing Rule 144A securities at a particular time could affect adversely the marketability of such securities and the Fund might be unable to dispose of such securities promptly or at reasonable prices. Accordingly, even if determined to be liquid, the Fund’s holdings of Rule 144A securities may increase the level of Fund illiquidity if eligible buyers become uninterested in buying them at a particular time. Short Positions Risk. The Fund may establish short positions which introduce more risk to the Fund than long positions (where the Fund owns the instrument) because the maximum sustainable loss on an instrument purchased (held long) is limited to the amount paid for the instrument plus the transaction costs, whereas there is no maximum price of the shorted instrument when purchased in the open market. Therefore, in theory, short positions have unlimited risk. The Fund’s use of short positions in effect “leverages” the Fund. 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. To the extent the Fund takes a short position in a derivative instrument, this involves the risk of a potentially unlimited increase in the value of the underlying instrument.
Risk Lose Money [Text]	rr_RiskLoseMoney	There is no assurance that the Fund will achieve its investment objective and you may lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance. The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (without applicable sales charges and adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities. The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	800.345.6611
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	columbiamanagement.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Year by Year Total Return (%) as of December 31 Each Year
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best and Worst Quarterly Returns During the Period Shown in the Bar Chart Best                              3rd Quarter 2009                            12.42% Worst                           4th Quarter 2008                            -17.91%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs).
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	The after-tax returns are shown only for Class A shares and will vary for other share classes.
Columbia Convertible Securities Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	5.75%
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[1]
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.39%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.40%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.30%)	[3]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	1.10%	[3]
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months after purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	681
3 years	rr_ExpenseExampleYear03	965
5 years	rr_ExpenseExampleYear05	1,270
10 years	rr_ExpenseExampleYear10	2,134
1 year	rr_ExpenseExampleNoRedemptionYear01	681
3 years	rr_ExpenseExampleNoRedemptionYear03	965
5 years	rr_ExpenseExampleNoRedemptionYear05	1,270
10 years	rr_ExpenseExampleNoRedemptionYear10	2,134
2003	rr_AnnualReturn2003	25.95%	[4]
2004	rr_AnnualReturn2004	10.85%	[4]
2005	rr_AnnualReturn2005	3.22%	[4]
2006	rr_AnnualReturn2006	9.73%	[4]
2007	rr_AnnualReturn2007	6.39%	[4]
2008	rr_AnnualReturn2008	(33.44%)	[4]
2009	rr_AnnualReturn2009	33.17%	[4]
2010	rr_AnnualReturn2010	19.05%	[4]
2011	rr_AnnualReturn2011	(5.03%)	[4]
2012	rr_AnnualReturn2012	13.05%	[4]
Year to Date Return, Label	rr_YearToDateReturnLabel	Year to Date return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	7.75%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Sep. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	12.42%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(17.91%)
1 Year	rr_AverageAnnualReturnYear01	6.58%
5 Years	rr_AverageAnnualReturnYear05	1.32%
10 Years	rr_AverageAnnualReturnYear10	6.03%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 25, 1987
Columbia Convertible Securities Fund | Class B
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	5.00%	[5]
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.39%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	2.15%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.30%)	[3]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	1.85%	[3]
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge decreases over time.
1 year	rr_ExpenseExampleYear01	688
3 years	rr_ExpenseExampleYear03	944
5 years	rr_ExpenseExampleYear05	1,327
10 years	rr_ExpenseExampleYear10	2,268
1 year	rr_ExpenseExampleNoRedemptionYear01	188
3 years	rr_ExpenseExampleNoRedemptionYear03	644
5 years	rr_ExpenseExampleNoRedemptionYear05	1,127
10 years	rr_ExpenseExampleNoRedemptionYear10	2,268
1 Year	rr_AverageAnnualReturnYear01	7.19%
5 Years	rr_AverageAnnualReturnYear05	1.39%
10 Years	rr_AverageAnnualReturnYear10	5.86%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 15, 1998
Columbia Convertible Securities Fund | Class C
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[6]
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.39%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	2.15%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.30%)	[3]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	1.85%	[3]
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge applies to redemptions within one year of purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	288
3 years	rr_ExpenseExampleYear03	644
5 years	rr_ExpenseExampleYear05	1,127
10 years	rr_ExpenseExampleYear10	2,459
1 year	rr_ExpenseExampleNoRedemptionYear01	188
3 years	rr_ExpenseExampleNoRedemptionYear03	644
5 years	rr_ExpenseExampleNoRedemptionYear05	1,127
10 years	rr_ExpenseExampleNoRedemptionYear10	2,459
1 Year	rr_AverageAnnualReturnYear01	11.24%
5 Years	rr_AverageAnnualReturnYear05	1.75%
10 Years	rr_AverageAnnualReturnYear10	5.86%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 21, 1996
Columbia Convertible Securities Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.13%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.89%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.23%)	[3]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	0.66%	[3]
1 year	rr_ExpenseExampleYear01	67
3 years	rr_ExpenseExampleYear03	261
5 years	rr_ExpenseExampleYear05	471
10 years	rr_ExpenseExampleYear10	1,075
1 year	rr_ExpenseExampleNoRedemptionYear01	67
3 years	rr_ExpenseExampleNoRedemptionYear03	261
5 years	rr_ExpenseExampleNoRedemptionYear05	471
10 years	rr_ExpenseExampleNoRedemptionYear10	1,075
1 Year	rr_AverageAnnualReturnYear01	13.44%
5 Years	rr_AverageAnnualReturnYear05	2.69%
10 Years	rr_AverageAnnualReturnYear10	6.75%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 27, 2010
Columbia Convertible Securities Fund | Class R
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.50%
Other expenses	rr_OtherExpensesOverAssets	0.39%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.65%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.30%)	[3]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	1.35%	[3]
1 year	rr_ExpenseExampleYear01	137
3 years	rr_ExpenseExampleYear03	491
5 years	rr_ExpenseExampleYear05	869
10 years	rr_ExpenseExampleYear10	1,929
1 year	rr_ExpenseExampleNoRedemptionYear01	137
3 years	rr_ExpenseExampleNoRedemptionYear03	491
5 years	rr_ExpenseExampleNoRedemptionYear05	869
10 years	rr_ExpenseExampleNoRedemptionYear10	1,929
1 Year	rr_AverageAnnualReturnYear01	12.82%
5 Years	rr_AverageAnnualReturnYear05	2.14%
10 Years	rr_AverageAnnualReturnYear10	6.24%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 16, 2011
Columbia Convertible Securities Fund | Class R4
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.39%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.15%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.30%)	[3]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	0.85%	[3]
1 year	rr_ExpenseExampleYear01	87
3 years	rr_ExpenseExampleYear03	336
5 years	rr_ExpenseExampleYear05	604
10 years	rr_ExpenseExampleYear10	1,371
1 year	rr_ExpenseExampleNoRedemptionYear01	87
3 years	rr_ExpenseExampleNoRedemptionYear03	336
5 years	rr_ExpenseExampleNoRedemptionYear05	604
10 years	rr_ExpenseExampleNoRedemptionYear10	1,371
1 Year	rr_AverageAnnualReturnYear01	13.09%
5 Years	rr_AverageAnnualReturnYear05	2.53%
10 Years	rr_AverageAnnualReturnYear10	6.67%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia Convertible Securities Fund | Class R5
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.18%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.94%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.23%)	[3]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	0.71%	[3]
1 year	rr_ExpenseExampleYear01	73
3 years	rr_ExpenseExampleYear03	277
5 years	rr_ExpenseExampleYear05	498
10 years	rr_ExpenseExampleYear10	1,134
1 year	rr_ExpenseExampleNoRedemptionYear01	73
3 years	rr_ExpenseExampleNoRedemptionYear03	277
5 years	rr_ExpenseExampleNoRedemptionYear05	498
10 years	rr_ExpenseExampleNoRedemptionYear10	1,134
1 Year	rr_AverageAnnualReturnYear01	13.12%
5 Years	rr_AverageAnnualReturnYear05	2.54%
10 Years	rr_AverageAnnualReturnYear10	6.67%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia Convertible Securities Fund | Class W
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.39%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.40%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.30%)	[3]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	1.10%	[3]
1 year	rr_ExpenseExampleYear01	112
3 years	rr_ExpenseExampleYear03	414
5 years	rr_ExpenseExampleYear05	737
10 years	rr_ExpenseExampleYear10	1,654
1 year	rr_ExpenseExampleNoRedemptionYear01	112
3 years	rr_ExpenseExampleNoRedemptionYear03	414
5 years	rr_ExpenseExampleNoRedemptionYear05	737
10 years	rr_ExpenseExampleNoRedemptionYear10	1,654
1 Year	rr_AverageAnnualReturnYear01	13.08%
5 Years	rr_AverageAnnualReturnYear05	2.39%
10 Years	rr_AverageAnnualReturnYear10	6.50%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 16, 2011
Columbia Convertible Securities Fund | Class Z
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.39%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.15%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.30%)	[3]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	0.85%	[3]
1 year	rr_ExpenseExampleYear01	87
3 years	rr_ExpenseExampleYear03	336
5 years	rr_ExpenseExampleYear05	604
10 years	rr_ExpenseExampleYear10	1,371
1 year	rr_ExpenseExampleNoRedemptionYear01	87
3 years	rr_ExpenseExampleNoRedemptionYear03	336
5 years	rr_ExpenseExampleNoRedemptionYear05	604
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 1,371
1 Year	rr_AverageAnnualReturnYear01	13.32%
5 Years	rr_AverageAnnualReturnYear05	2.80%
10 Years	rr_AverageAnnualReturnYear10	6.92%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	May 21, 1999
Columbia Convertible Securities Fund | returns after taxes on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	5.57%
5 Years	rr_AverageAnnualReturnYear05	0.39%
10 Years	rr_AverageAnnualReturnYear10	4.62%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 25, 1987
Columbia Convertible Securities Fund | returns after taxes on distributions and sale of Fund shares | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	4.37%
5 Years	rr_AverageAnnualReturnYear05	0.63%
10 Years	rr_AverageAnnualReturnYear10	4.61%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 25, 1987
Columbia Convertible Securities Fund | BofA Merrill Lynch All Convertibles All Qualities Index (reflects no deductions for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	14.96%
5 Years	rr_AverageAnnualReturnYear05	4.06%
10 Years	rr_AverageAnnualReturnYear10	7.31%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months after purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] Other expenses for Class A, Class B, Class C, Class R, Class W and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R4 and Class R5 are based on estimated amounts for the Fund's current fiscal year.

[3] Columbia Management Investment Advisers, LLC and certain of its affiliates have contractually agreed to waive fees and/or to reimburse expenses (excluding certain fees and expenses, such as transaction costs and certain other investment related expenses, interest, taxes, acquired fund fees and expenses, and extraordinary expenses) until June 30, 2014, unless sooner terminated at the sole discretion of the Fund's Board of Trustees. Under this agreement, the Fund's net operating expenses, subject to applicable exclusions, will not exceed the annual rates of 1.10% for Class A, 1.85% for Class B, 1.85% for Class C, 0.66% for Class I, 1.35% for Class R, 0.85% for Class R4, 0.71% for Class R5, 1.10% for Class W and 0.85% for Class Z.

[4] Year to Date return as of March 31, 2013: 7.75%

[5] This charge decreases over time.

[6] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	COLUMBIA FUNDS SERIES TRUST
Prospectus Date	rr_ProspectusDate	Jul. 01, 2013
Columbia Large Cap Index Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Summary of the Fund
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Columbia Large Cap Index Fund (the Fund) seeks total return before fees and expenses that corresponds to the total return of the Standard & Poor’s (S&P) 500® Index.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund may pay 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 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 7% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	7.00%
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Other expenses have been restated to reflect contractual changes to certain fees paid by the Fund.
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that: you invest $10,000 in the applicable class of Fund shares for the periods indicated, your investment has a 5% return each year, and the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in common stocks that comprise the S&P 500 Index (the Index). The Fund may invest in derivatives, consisting of stock index futures, as substitutes for the underlying securities in the Index. Different common stocks have different weightings in the Index, depending on the amount of stock outstanding and the stock’s current price. In seeking to match the performance of the Index, Columbia Management Investment Advisers, LLC (the Investment Manager) attempts to allocate the Fund’s assets among common stocks in approximately the same weightings as the Index. This is referred to as a passive or indexing approach to investing. The Fund may buy shares of Ameriprise Financial, Inc., an affiliate of the Fund’s investment manager, which is currently included in the Index, subject to certain restrictions. The Fund attempts to achieve at least a 95% correlation between the performance of the Index and the Fund’s investment results, before fees and expenses.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down. Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund. Derivatives Risk/Futures Contracts Risk. The loss that may be incurred in entering into futures contracts may exceed the amount of the premium paid and may be potentially unlimited. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value (NAV). Additionally, as a result of the low collateral deposits normally involved in futures trading, a relatively small price movement in a futures contract may result in substantial losses to the Fund. Futures contracts may be illiquid. Furthermore, exchanges may limit fluctuations in futures contract prices during a trading session by imposing a maximum permissible price movement on each futures contract. The Fund may be disadvantaged if it is prohibited from executing a trade outside the daily permissible price movement. Futures contracts executed on foreign exchanges may not provide the same protection as U.S. exchanges. These transactions involve additional risks, including counterparty risk, hedging risk and pricing risk. Index Risk. The Fund's value will generally decline when the performance of its targeted index declines. In addition, because the Fund may not hold all issues included in its index, it may not always be fully invested. The Fund also bears advisory, administrative and other expenses and transaction costs in trading securities, which the index does not bear. Accordingly, the Fund's performance will likely fail to match the performance of its targeted index, after taking expenses into account. It is not possible to invest directly in an index. Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors. Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities. Tracking Error Risk. The Fund will not track its benchmark index perfectly and the Fund may not outperform the index. The tools that the Investment Manager uses to replicate the index are not perfect and the Fund’s performance may be impacted by the size of the Fund’s portfolio, the effectiveness of sampling techniques, transaction costs, management fees and expenses, brokerage commissions and fees, the extent and timing of cash flows in and out of the Fund and changes in the index.
Risk Lose Money [Text]	rr_RiskLoseMoney	There is no assurance that the Fund will achieve its investment objective and you may lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance has varied for each full calendar year shown. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance. Class A share performance is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class Z shares (adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities. The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance has varied for each full calendar year shown. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	800.345.6611
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	columbiamanagement.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Year by Year Total Return (%) as of December 31 Each Year
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best and Worst Quarterly Returns During the Period Shown in the Bar Chart Best                              2nd Quarter 2009                            15.80% Worst                           4th Quarter 2008                            -21.99%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs).
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	The after-tax returns are shown only for Class A shares and will vary for other share classes.
Columbia Large Cap Index Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.10%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.10%	[1]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.45%
1 year	rr_ExpenseExampleYear01	$ 46
3 years	rr_ExpenseExampleYear03	144
5 years	rr_ExpenseExampleYear05	252
10 years	rr_ExpenseExampleYear10	567
1 year	rr_ExpenseExampleNoRedemptionYear01	46
3 years	rr_ExpenseExampleNoRedemptionYear03	144
5 years	rr_ExpenseExampleNoRedemptionYear05	252
10 years	rr_ExpenseExampleNoRedemptionYear10	567
2003	rr_AnnualReturn2003	27.98%	[2]
2004	rr_AnnualReturn2004	10.45%	[2]
2005	rr_AnnualReturn2005	4.51%	[2]
2006	rr_AnnualReturn2006	15.39%	[2]
2007	rr_AnnualReturn2007	5.12%	[2]
2008	rr_AnnualReturn2008	(37.22%)	[2]
2009	rr_AnnualReturn2009	26.03%	[2]
2010	rr_AnnualReturn2010	14.62%	[2]
2011	rr_AnnualReturn2011	1.73%	[2]
2012	rr_AnnualReturn2012	15.51%	[2]
Year to Date Return, Label	rr_YearToDateReturnLabel	Year to Date return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	10.45%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	15.80%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(21.99%)
1 Year	rr_AverageAnnualReturnYear01	15.51%
5 Years	rr_AverageAnnualReturnYear05	1.28%
10 Years	rr_AverageAnnualReturnYear10	6.68%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 10, 1995
Columbia Large Cap Index Fund | Class B
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	5.00%	[3]
Management fees	rr_ManagementFeesOverAssets	0.10%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.10%	[1]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.20%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge decreases over time.
1 year	rr_ExpenseExampleYear01	622
3 years	rr_ExpenseExampleYear03	681
5 years	rr_ExpenseExampleYear05	860
10 years	rr_ExpenseExampleYear10	1,246
1 year	rr_ExpenseExampleNoRedemptionYear01	122
3 years	rr_ExpenseExampleNoRedemptionYear03	381
5 years	rr_ExpenseExampleNoRedemptionYear05	660
10 years	rr_ExpenseExampleNoRedemptionYear10	1,246
1 Year	rr_AverageAnnualReturnYear01	9.61%
5 Years	rr_AverageAnnualReturnYear05	0.14%
10 Years	rr_AverageAnnualReturnYear10	5.89%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 23, 2005
Columbia Large Cap Index Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.10%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.10%	[1]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.20%
1 year	rr_ExpenseExampleYear01	20
3 years	rr_ExpenseExampleYear03	64
5 years	rr_ExpenseExampleYear05	113
10 years	rr_ExpenseExampleYear10	255
1 year	rr_ExpenseExampleNoRedemptionYear01	20
3 years	rr_ExpenseExampleNoRedemptionYear03	64
5 years	rr_ExpenseExampleNoRedemptionYear05	113
10 years	rr_ExpenseExampleNoRedemptionYear10	255
1 Year	rr_AverageAnnualReturnYear01	15.78%
5 Years	rr_AverageAnnualReturnYear05	1.48%
10 Years	rr_AverageAnnualReturnYear10	6.89%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 16, 2011
Columbia Large Cap Index Fund | Class R5
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.10%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.10%	[1]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.20%
1 year	rr_ExpenseExampleYear01	20
3 years	rr_ExpenseExampleYear03	64
5 years	rr_ExpenseExampleYear05	113
10 years	rr_ExpenseExampleYear10	255
1 year	rr_ExpenseExampleNoRedemptionYear01	20
3 years	rr_ExpenseExampleNoRedemptionYear03	64
5 years	rr_ExpenseExampleNoRedemptionYear05	113
10 years	rr_ExpenseExampleNoRedemptionYear10	255
1 Year	rr_AverageAnnualReturnYear01	15.76%
5 Years	rr_AverageAnnualReturnYear05	1.53%
10 Years	rr_AverageAnnualReturnYear10	6.95%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia Large Cap Index Fund | Class Z
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.10%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.10%	[1]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.20%
1 year	rr_ExpenseExampleYear01	20
3 years	rr_ExpenseExampleYear03	64
5 years	rr_ExpenseExampleYear05	113
10 years	rr_ExpenseExampleYear10	255
1 year	rr_ExpenseExampleNoRedemptionYear01	20
3 years	rr_ExpenseExampleNoRedemptionYear03	64
5 years	rr_ExpenseExampleNoRedemptionYear05	113
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 255
1 Year	rr_AverageAnnualReturnYear01	15.78%
5 Years	rr_AverageAnnualReturnYear05	1.53%
10 Years	rr_AverageAnnualReturnYear10	6.95%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 15, 1993
Columbia Large Cap Index Fund | returns after taxes on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	15.15%
5 Years	rr_AverageAnnualReturnYear05	0.99%
10 Years	rr_AverageAnnualReturnYear10	6.36%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 10, 1995
Columbia Large Cap Index Fund | returns after taxes on distributions and sale of Fund shares | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	10.55%
5 Years	rr_AverageAnnualReturnYear05	1.03%
10 Years	rr_AverageAnnualReturnYear10	5.78%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 10, 1995
Columbia Large Cap Index Fund | S&P 500 Index (reflects no deductions for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	16.00%
5 Years	rr_AverageAnnualReturnYear05	1.66%
10 Years	rr_AverageAnnualReturnYear10	7.10%

[1] Other expenses have been restated to reflect contractual changes to certain fees paid by the Fund.

[2] Year to Date return as of March 31, 2013: 10.45%

[3] This charge decreases over time.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	COLUMBIA FUNDS SERIES TRUST
Prospectus Date	rr_ProspectusDate	Jul. 01, 2013
Columbia Small Cap Index Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Summary of the Fund
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Columbia Small Cap Index Fund (the Fund) seeks total return before fees and expenses that corresponds to the total return of the Standard & Poor’s (S&P) SmallCap 600® Index.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund may pay 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 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 17% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	17.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	“Total annual Fund operating expenses” in the table (which includes acquired fund fees and expenses) may not match “Net Expenses” in the Financial Highlights section of this prospectus because it does not include such acquired fund fees and expenses.
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that: you invest $10,000 in the applicable class of Fund shares for the periods indicated, your investment has a 5% return each year, and the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in common stocks that comprise the S&P SmallCap 600 Index (the Index). The Fund may invest in derivatives, consisting of relevant stock index futures, to gain exposure to the small cap equity market pending direct investments in securities. Different common stocks have different weightings in the Index, depending on the amount of stock outstanding and the stock’s current price. In seeking to match the performance of the Index, Columbia Management Investment Advisers, LLC (the Investment Manager) attempts to allocate the Fund’s assets among common stocks in approximately the same weightings as the Index. This is referred to as a passive or indexing approach to investing. The Fund attempts to achieve at least a 95% correlation between the performance of the Index and the Fund’s investment results, before fees and expenses.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down. Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund. Derivatives Risk/Futures Contracts Risk. The loss that may be incurred in entering into futures contracts may exceed the amount of the premium paid and may be potentially unlimited. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value (NAV). Additionally, as a result of the low collateral deposits normally involved in futures trading, a relatively small price movement in a futures contract may result in substantial losses to the Fund. Futures contracts may be illiquid. Furthermore, exchanges may limit fluctuations in futures contract prices during a trading session by imposing a maximum permissible price movement on each futures contract. The Fund may be disadvantaged if it is prohibited from executing a trade outside the daily permissible price movement. Futures contracts executed on foreign exchanges may not provide the same protection as U.S. exchanges. These transactions involve additional risks, including counterparty risk, hedging risk and pricing risk. Index Risk. The Fund's value will generally decline when the performance of its targeted index declines. In addition, because the Fund may not hold all issues included in its index, it may not always be fully invested. The Fund also bears advisory, administrative and other expenses and transaction costs in trading securities, which the index does not bear. Accordingly, the Fund's performance will likely fail to match the performance of its targeted index, after taking expenses into account. It is not possible to invest directly in an index. Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors. Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities. Small Company Securities Risk. Investments in small-capitalization companies (small-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small-cap companies may be less liquid and more volatile than the securities of larger companies. Tracking Error Risk. The Fund will not track its benchmark index perfectly and the Fund may not outperform the index. The tools that the Investment Manager uses to replicate the index are not perfect and the Fund’s performance may be impacted by the size of the Fund’s portfolio, the effectiveness of sampling techniques, transaction costs, management fees and expenses, brokerage commissions and fees, the extent and timing of cash flows in and out of the Fund and changes in the index.
Risk Lose Money [Text]	rr_RiskLoseMoney	There is no assurance that the Fund will achieve its investment objective and you may lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance has varied for each full calendar year shown. Class A share performance is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance. The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities. The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance has varied for each full calendar year shown. Class A share performance is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	800.345.6611
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	columbiamanagement.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Year by Year Total Return (%) as of December 31 Each Year
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best and Worst Quarterly Returns During the Period Shown in the Bar Chart Best                              2nd Quarter 2009                            21.02% Worst                           4th Quarter 2008                            -25.03%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs).
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	The after-tax returns are shown only for Class A shares and will vary for other share classes.
Columbia Small Cap Index Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.10%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.10%
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.03%
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.48%	[1]
1 year	rr_ExpenseExampleYear01	$ 49
3 years	rr_ExpenseExampleYear03	154
5 years	rr_ExpenseExampleYear05	269
10 years	rr_ExpenseExampleYear10	604
1 year	rr_ExpenseExampleNoRedemptionYear01	49
3 years	rr_ExpenseExampleNoRedemptionYear03	154
5 years	rr_ExpenseExampleNoRedemptionYear05	269
10 years	rr_ExpenseExampleNoRedemptionYear10	604
2003	rr_AnnualReturn2003	37.94%	[2]
2004	rr_AnnualReturn2004	22.08%	[2]
2005	rr_AnnualReturn2005	7.14%	[2]
2006	rr_AnnualReturn2006	14.62%	[2]
2007	rr_AnnualReturn2007	(0.66%)	[2]
2008	rr_AnnualReturn2008	(31.00%)	[2]
2009	rr_AnnualReturn2009	25.19%	[2]
2010	rr_AnnualReturn2010	25.71%	[2]
2011	rr_AnnualReturn2011	0.58%	[2]
2012	rr_AnnualReturn2012	15.96%	[2]
Year to Date Return, Label	rr_YearToDateReturnLabel	Year to Date return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	11.68%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	21.02%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(25.03%)
1 Year	rr_AverageAnnualReturnYear01	15.96%
5 Years	rr_AverageAnnualReturnYear05	4.84%
10 Years	rr_AverageAnnualReturnYear10	10.03%
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 15, 1996
Columbia Small Cap Index Fund | Class B
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	5.00%	[3]
Management fees	rr_ManagementFeesOverAssets	0.10%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.10%
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.03%
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.23%	[1]
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge decreases over time.
1 year	rr_ExpenseExampleYear01	625
3 years	rr_ExpenseExampleYear03	690
5 years	rr_ExpenseExampleYear05	876
10 years	rr_ExpenseExampleYear10	1,280
1 year	rr_ExpenseExampleNoRedemptionYear01	125
3 years	rr_ExpenseExampleNoRedemptionYear03	390
5 years	rr_ExpenseExampleNoRedemptionYear05	676
10 years	rr_ExpenseExampleNoRedemptionYear10	1,280
1 Year	rr_AverageAnnualReturnYear01	10.06%
5 Years	rr_AverageAnnualReturnYear05	3.73%
10 Years	rr_AverageAnnualReturnYear10	9.21%
Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 07, 2011
Columbia Small Cap Index Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.10%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.10%
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.03%
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.23%	[1]
1 year	rr_ExpenseExampleYear01	24
3 years	rr_ExpenseExampleYear03	74
5 years	rr_ExpenseExampleYear05	130
10 years	rr_ExpenseExampleYear10	293
1 year	rr_ExpenseExampleNoRedemptionYear01	24
3 years	rr_ExpenseExampleNoRedemptionYear03	74
5 years	rr_ExpenseExampleNoRedemptionYear05	130
10 years	rr_ExpenseExampleNoRedemptionYear10	293
1 Year	rr_AverageAnnualReturnYear01	16.28%
5 Years	rr_AverageAnnualReturnYear05	4.90%
10 Years	rr_AverageAnnualReturnYear10	10.06%
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 16, 2011
Columbia Small Cap Index Fund | Class K
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.10%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.35%
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.03%
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.48%	[1]
1 year	rr_ExpenseExampleYear01	49
3 years	rr_ExpenseExampleYear03	154
5 years	rr_ExpenseExampleYear05	269
10 years	rr_ExpenseExampleYear10	604
1 year	rr_ExpenseExampleNoRedemptionYear01	49
3 years	rr_ExpenseExampleNoRedemptionYear03	154
5 years	rr_ExpenseExampleNoRedemptionYear05	269
10 years	rr_ExpenseExampleNoRedemptionYear10	604
1 Year	rr_AverageAnnualReturnYear01	15.91%
5 Years	rr_AverageAnnualReturnYear05	4.83%
10 Years	rr_AverageAnnualReturnYear10	10.03%
Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 07, 2011
Columbia Small Cap Index Fund | Class R5
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.10%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.10%
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.03%
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.23%	[1]
1 year	rr_ExpenseExampleYear01	24
3 years	rr_ExpenseExampleYear03	74
5 years	rr_ExpenseExampleYear05	130
10 years	rr_ExpenseExampleYear10	293
1 year	rr_ExpenseExampleNoRedemptionYear01	24
3 years	rr_ExpenseExampleNoRedemptionYear03	74
5 years	rr_ExpenseExampleNoRedemptionYear05	130
10 years	rr_ExpenseExampleNoRedemptionYear10	293
1 Year	rr_AverageAnnualReturnYear01	15.98%
5 Years	rr_AverageAnnualReturnYear05	4.84%
10 Years	rr_AverageAnnualReturnYear10	10.04%
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia Small Cap Index Fund | Class Z
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.10%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.10%
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.03%
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.23%	[1]
1 year	rr_ExpenseExampleYear01	24
3 years	rr_ExpenseExampleYear03	74
5 years	rr_ExpenseExampleYear05	130
10 years	rr_ExpenseExampleYear10	293
1 year	rr_ExpenseExampleNoRedemptionYear01	24
3 years	rr_ExpenseExampleNoRedemptionYear03	74
5 years	rr_ExpenseExampleNoRedemptionYear05	130
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 293
1 Year	rr_AverageAnnualReturnYear01	16.19%
5 Years	rr_AverageAnnualReturnYear05	5.09%
10 Years	rr_AverageAnnualReturnYear10	10.31%
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 15, 1996
Columbia Small Cap Index Fund | returns after taxes on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	14.83%
5 Years	rr_AverageAnnualReturnYear05	3.81%
10 Years	rr_AverageAnnualReturnYear10	9.00%
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 15, 1996
Columbia Small Cap Index Fund | returns after taxes on distributions and sale of Fund shares | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	11.73%
5 Years	rr_AverageAnnualReturnYear05	3.85%
10 Years	rr_AverageAnnualReturnYear10	8.63%
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 15, 1996
Columbia Small Cap Index Fund | S&P SmallCap 600 Index (reflects no deductions for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	16.33%
5 Years	rr_AverageAnnualReturnYear05	5.14%
10 Years	rr_AverageAnnualReturnYear10	10.45%

[1] "Total annual Fund operating expenses" in the table (which includes acquired fund fees and expenses) may not match "Net Expenses" in the Financial Highlights section of this prospectus because it does not include such acquired fund fees and expenses.

[2] Year to Date return as of March 31, 2013: 11.68%

[3] This charge decreases over time.

XML

Columbia Marsico Focused Equities Fund

Summary of the Fund

Investment Objective

Columbia Marsico Focused Equities Fund (the Fund) seeks long-term growth of capital.

Fees and Expenses of the Fund

This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 19 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Columbia Marsico Focused Equities Fund	Class A		Class B		Class C		Class I	Class R4	Class Z
Maximum sales charge (load) imposed on purchases (as a % of offering price)	5.75%		none		none		none	none	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	1.00%	[1]	5.00%	[2]	1.00%	[3]	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Columbia Marsico Focused Equities Fund		Class A	Class B	Class C	Class I	Class R4	Class Z
Management fees	[1]	0.65%	0.65%	0.65%	0.65%	0.65%	0.65%
Distribution and/or service (12b-1) fees		0.25%	1.00%	1.00%	none	none	none
Other expenses	[2]	0.28%	0.28%	0.28%	0.07%	0.28%	0.28%
Total annual Fund operating expenses		1.18%	1.93%	1.93%	0.72%	0.93%	0.93%

Example

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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that:

• you invest $10,000 in the applicable class of Fund shares for the periods indicated,

• your investment has a 5% return each year, and

• the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above.

Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:

Expense Example Columbia Marsico Focused Equities Fund (USD $)	1 year	3 years	5 years	10 years
Class A	688	928	1,187	1,924
Class B	696	906	1,242	2,059
Class C	296	606	1,042	2,254
Class I	74	230	401	894
Class R4	95	296	515	1,143
Class Z	95	296	515	1,143

Expense Example, No Redemption Columbia Marsico Focused Equities Fund (USD $)	1 year	3 years	5 years	10 years
Class A	688	928	1,187	1,924
Class B	196	606	1,042	2,059
Class C	196	606	1,042	2,254
Class I	74	230	401	894
Class R4	95	296	515	1,143
Class Z	95	296	515	1,143

Portfolio Turnover

The Fund may pay 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 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 76% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund invests at least 80% of its net assets in equity securities. These investments mostly consist of equity securities of large-capitalization companies that have market capitalizations of $5 billion or more at the time of purchase. The Fund, which is non-diversified, generally will hold a core position of between 20 and 35 common stocks that are believed to have potential for long-term growth. The number of securities held by the Fund occasionally may exceed this range, such as when the Fund is accumulating new positions, phasing out and replacing existing positions, or responding to exceptional market conditions. The Fund may invest up to 25% in foreign securities, including in emerging market securities.

The core investments of the Fund (i.e., the primary investments held by the Fund over time) generally may include established companies and securities that are expected to offer long-term growth potential. However, the Fund's portfolio also may typically include securities of less mature companies, securities with more aggressive growth characteristics, and securities of companies undergoing significant positive developments, such as, without limitation, the introduction of a new product line, the appointment of a new management team, or an acquisition.

Principal Risks

An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down.

Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money.

Emerging Market Securities Risk. Securities issued by foreign governments or companies in emerging market countries are more likely to have greater exposure to the risks of investing in foreign securities that are described in Foreign Securities Risk. In addition, emerging market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Their economies are usually less mature and their securities markets are typically less developed with more limited trading activity (i.e., lower trading volumes and less liquidity) than more developed countries. Emerging market securities tend to be more volatile than securities in more developed markets. Many emerging market countries are heavily dependent on international trade and have fewer trading partners, which makes them more sensitive to world commodity prices and economic downturns in other countries, and some have a higher risk of currency devaluations.

Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar.

Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies.

Growth Securities Risk. Growth securities typically trade at a higher multiple of earnings than other types of equity securities. Accordingly, the market values of growth securities may be more sensitive to adverse economic or other circumstances or changes in current or expected earnings than the market values of other types of securities. In addition, growth securities, at times, may not perform as well as value securities or the stock market in general, and may be out of favor with investors for varying periods of time.

Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors.

Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities.

Non-Diversified Fund  Risk. The Fund is non-diversified, which generally means that it will invest a greater percentage of its total assets in the securities of fewer issuers than a “diversified” fund. This increases the risk that a change in the value of any one investment held by the Fund could affect the overall value of the Fund more than it would affect that of a diversified fund holding a greater number of investments. Accordingly, the Fund's value will likely be more volatile than the value of a more diversified fund.

Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within an economic sector. Companies in the same economic sector may be similarly affected by economic, regulatory, political or market events or conditions, making the Fund more vulnerable to unfavorable developments in that economic sector than funds that invest more broadly. The more a fund diversifies its investments, the more it spreads risk and potentially reduces the risks of loss and volatility.

Small- and Mid-Cap Company Securities Risk. Investments in small- and mid-capitalization companies (small- and mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small- and mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small- and mid-cap companies may be less liquid and more volatile than the securities of larger companies.

Performance Information

The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.

The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (without applicable sales charges and adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities.

The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public.

The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.

Year by Year Total Return (%)
as of December 31 Each Year

Best and Worst Quarterly Returns
During the Period Shown in the Bar Chart

Best                              1st Quarter 2012                            16.15%


Worst                           4th Quarter 2008                            -21.11%

Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)

Average Annual Total Returns Columbia Marsico Focused Equities Fund	Share Class Inception Date	1 Year	5 Years	10 Years
Class A shares	Dec. 31, 1997	5.36%	(0.95%)	6.42%
Class A shares returns after taxes on distributions	Dec. 31, 1997	2.10%	(1.63%)	6.04%
Class A shares returns after taxes on distributions and sale of Fund shares	Dec. 31, 1997	7.59%	(0.81%)	5.64%
Class B shares	Dec. 31, 1997	6.55%	(0.84%)	6.24%
Class C shares	Dec. 31, 1997	10.08%	(0.51%)	6.25%
Class I shares	Sep. 27, 2010	12.24%	0.49%	7.19%
Class R4 shares	Nov. 08, 2012	11.81%	0.23%	7.05%
Class Z shares	Dec. 31, 1997	12.08%	0.49%	7.31%
S&P 500 Index (reflects no deductions for fees, expenses or taxes)		16.00%	1.66%	7.10%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] This charge decreases over time.

[3] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

[1] Management fees have been restated to reflect contractual changes to the investment management fee rates.

[2] Other expenses for Class A, Class B, Class C and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R4 are based on estimated amounts for the Fund's current fiscal year.

[1] Year to Date return as of March 31, 2013: 11.29%

XML

Columbia Marsico Global Fund

Summary of the Fund

Investment Objective

Columbia Marsico Global Fund (the Fund) seeks long-term growth of capital.

Fees and Expenses of the Fund

This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 21 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Columbia Marsico Global Fund	Class A		Class C		Class R	Class Z
Maximum sales charge (load) imposed on purchases (as a % of offering price)	5.75%		none		none	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	1.00%	[1]	1.00%	[2]	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Columbia Marsico Global Fund		Class A	Class C	Class R	Class Z
Management fees	[1]	0.79%	0.79%	0.79%	0.79%
Distribution and/or service (12b-1) fees		0.25%	1.00%	0.50%	none
Other expenses	[2]	1.05%	1.05%	1.05%	1.05%
Total annual Fund operating expenses		2.09%	2.84%	2.34%	1.84%
Less: Fee waivers and/or expense reimbursements	[3]	(0.59%)	(0.59%)	(0.59%)	(0.59%)
Total annual Fund operating expenses after fee waivers and/or reimbursements		1.50%	2.25%	1.75%	1.25%

Example

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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that:

• you invest $10,000 in the applicable class of Fund shares for the periods indicated,

• your investment has a 5% return each year, and

• the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above.

Since the waivers and/or reimbursements shown in the Annual Fund Operating Expenses table above expire as indicated in the preceding table, they are only reflected in the 1 year example and the first year of the other examples.  Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:

Expense Example Columbia Marsico Global Fund (USD $)	1 year	3 years	5 years	10 years
Class A	719	1,139	1,583	2,813
Class C	328	824	1,447	3,124
Class R	178	674	1,197	2,631
Class Z	127	521	941	2,110

Expense Example, No Redemption Columbia Marsico Global Fund (USD $)	1 year	3 years	5 years	10 years
Class A	719	1,139	1,583	2,813
Class C	228	824	1,447	3,124
Class R	178	674	1,197	2,631
Class Z	127	521	941	2,110

Portfolio Turnover

The Fund may pay 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 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 98% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund will invest significantly (generally, at least 40% of its net assets) in the securities of companies organized or located outside the United States or doing business outside the United States (unless market conditions are not deemed favorable by the portfolio managers, in which case the Fund generally will invest at least 30% of net assets in such foreign securities). The Fund normally invests in common stocks and may invest in companies of any size throughout the world that are selected for their long-term growth potential. The Fund normally invests in companies from at least three different countries, including the United States, and may invest in companies operating in or economically tied to emerging market countries.

The Fund may invest without limit in foreign securities. These securities may be publicly traded in the United States or in foreign markets or both, and may be bought and sold in a foreign currency that the Fund may or may not also hold. The portfolio managers generally select foreign securities on a security-by-security basis based primarily on considerations such as growth potential rather than geographic location or other considerations.

Primarily for hedging purposes, the Fund may invest in derivatives, including futures (including futures on securities indices and foreign currencies), forward contracts on foreign currencies, options (including options on securities and securities indices) and other derivative instruments.

The core investments of the Fund (i.e., the primary investments held by the Fund over time) generally may include established companies and securities that are expected to offer long-term growth potential. However, the Fund's portfolio also may typically include securities of less mature companies, securities with more aggressive growth characteristics, and securities of companies undergoing significant positive developments, such as, without limitation, the introduction of a new product line, the appointment of a new management team, or an acquisition.

The Fund’s investment strategy may involve the frequent trading of portfolio securities. This may cause the Fund to incur higher transaction costs (which may adversely affect the Fund’s performance) and may increase taxable distributions for shareholders.

Principal Risks

An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down.

Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money.

Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund.

Derivatives Risk/Forward Foreign Currency Contracts Risk. These instruments are a type of derivative contract whereby the Fund may agree to buy or sell a country’s or region’s currency at a specific price on a specific date in the future. These contracts may fall in value due to foreign market downswings or foreign currency value fluctuations. The Fund’s investment or hedging strategies may not achieve their objective. Investment in these instruments also subjects the Fund to counterparty risk.

Derivatives Risk/Futures Contracts Risk. The loss that may be incurred in entering into futures contracts may exceed the amount of the premium paid and may be potentially unlimited. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value (NAV). Additionally, as a result of the low collateral deposits normally involved in futures trading, a relatively small price movement in a futures contract may result in substantial losses to the Fund. Futures contracts may be illiquid. Furthermore, exchanges may limit fluctuations in futures contract prices during a trading session by imposing a maximum permissible price movement on each futures contract. The Fund may be disadvantaged if it is prohibited from executing a trade outside the daily permissible price movement. Futures contracts executed on foreign exchanges may not provide the same protection as U.S. exchanges. These transactions involve additional risks, including counterparty risk, hedging risk and pricing risk.

Derivatives Risk/Options Risk. If the Fund sells a put option, there is a risk that the Fund may be required to buy the underlying asset at a disadvantageous price. If the Fund sells a call option, there is a risk that the Fund may be required to sell the underlying asset at a disadvantageous price, and if the call option sold is not covered (for example, by owning the underlying asset), the Fund's losses are potentially unlimited. These transactions involve other risks, including counterparty risk and hedging risk.

Emerging Market Securities Risk. Securities issued by foreign governments or companies in emerging market countries are more likely to have greater exposure to the risks of investing in foreign securities that are described in Foreign Securities Risk. In addition, emerging market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Their economies are usually less mature and their securities markets are typically less developed with more limited trading activity (i.e., lower trading volumes and less liquidity) than more developed countries. Emerging market securities tend to be more volatile than securities in more developed markets. Many emerging market countries are heavily dependent on international trade and have fewer trading partners, which makes them more sensitive to world commodity prices and economic downturns in other countries, and some have a higher risk of currency devaluations.

Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar.

Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies.

Frequent Trading Risk.  The portfolio managers may actively and frequently trade investments in the Fund's portfolio to carry out its investment strategies. Frequent trading of investments increases the possibility that the Fund, as relevant, will realize taxable capital gains (including short-term capital gains, which are generally taxable to shareholders at higher rates than long-term capital gains for U.S. federal income tax purposes), which could reduce the Fund's after-tax return. Frequent trading can also mean higher brokerage and other transaction costs, which could reduce the Fund's return. The trading costs and tax effects associated with portfolio turnover may adversely affect the Fund’s performance.

Geographic Concentration Risk/Europe Risk. The Fund may be particularly susceptible to economic, political, regulatory or other events or conditions affecting issuers and countries in Europe. Currency devaluations could occur in countries that have not yet experienced currency devaluation to date, or could continue to occur in countries that have already experienced such devaluations. In addition, the private and public sectors’ debt problems of a single EU country can pose significant economic risks to the EU as a whole. As a result, the Fund may be more volatile than a more geographically diversified fund. If securities of issuers in Europe fall out of favor, it may cause the Fund to underperform other funds that do not concentrate in this region of the world.

Growth Securities Risk. Growth securities typically trade at a higher multiple of earnings than other types of equity securities. Accordingly, the market values of growth securities may be more sensitive to adverse economic or other circumstances or changes in current or expected earnings than the market values of other types of securities. In addition, growth securities, at times, may not perform as well as value securities or the stock market in general, and may be out of favor with investors for varying periods of time.

Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors.

Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities.

Small- and Mid-Cap Company Securities Risk. Investments in small- and mid-capitalization companies (small- and mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small- and mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small- and mid-cap companies may be less liquid and more volatile than the securities of larger companies.

Performance Information

The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because the Fund has less than ten calendar years of performance and Class A shares are at least as old as any other share class of the Fund. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.

The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares. After-tax returns are shown for Class A shares because the Fund has less than ten calendar years of performance and Class A shares are at least as old as any other share class of the Fund.

The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.

Year by Year Total Return (%)
as of December 31 Each Year

Best and Worst Quarterly Returns
During the Period Shown in the Bar Chart

Best                              1st Quarter 2012                            21.68%


Worst                           3rd Quarter 2011                            -20.45%

Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)

Average Annual Total Returns Columbia Marsico Global Fund	Share Class Inception Date	1 Year	Life of Fund
Class A shares	Apr. 30, 2008	13.41%	(0.12%)
Class A shares returns after taxes on distributions	Apr. 30, 2008	13.41%	(0.19%)
Class A shares returns after taxes on distributions and sale of Fund shares	Apr. 30, 2008	8.71%	(0.11%)
Class C shares	Apr. 30, 2008	18.45%	0.40%
Class R shares	Apr. 30, 2008	20.05%	0.90%
Class Z shares	Apr. 30, 2008	20.65%	1.40%
MSCI All Country World Index (Net) (reflects reinvested dividends net of withholding taxes but reflects no deductions for fees, expenses or other taxes)		16.13%	(0.32%)

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

[1] Management fees have been restated to reflect contractual changes to the investment management fee rates.

[2] Other expenses have been restated to reflect contractual changes to certain fees paid by the Fund.

[3] Columbia Management Investment Advisers, LLC and certain of its affiliates have contractually agreed to waive fees and/or to reimburse expenses (excluding certain fees and expenses, such as transaction costs and certain other investment related expenses, interest, taxes, acquired fund fees and expenses, and extraordinary expenses) until June 30, 2014, unless sooner terminated at the sole discretion of the Fund's Board of Trustees. Under this agreement, the Fund's net operating expenses, subject to applicable exclusions, will not exceed the annual rates of 1.50% for Class A, 2.25% for Class C, 1.75% for Class R and 1.25% for Class Z.

[1] Year to Date return as of March 31, 2013: 8.24%

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Columbia Convertible Securities Fund

Summary of the Fund

Investment Objective

Columbia Convertible Securities Fund (the Fund) seeks total return, consisting of capital appreciation and current income.

Fees and Expenses of the Fund

This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 18 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Columbia Convertible Securities Fund	Class A		Class B		Class C		Class I	Class R	Class R4	Class R5	Class W	Class Z
Maximum sales charge (load) imposed on purchases (as a % of offering price)	5.75%		none		none		none	none	none	none	none	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	1.00%	[1]	5.00%	[2]	1.00%	[3]	none	none	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Columbia Convertible Securities Fund		Class A	Class B	Class C	Class I	Class R	Class R4	Class R5	Class W	Class Z
Management fees		0.76%	0.76%	0.76%	0.76%	0.76%	0.76%	0.76%	0.76%	0.76%
Distribution and/or service (12b-1) fees		0.25%	1.00%	1.00%	none	0.50%	none	none	0.25%	none
Other expenses	[1]	0.39%	0.39%	0.39%	0.13%	0.39%	0.39%	0.18%	0.39%	0.39%
Total annual Fund operating expenses		1.40%	2.15%	2.15%	0.89%	1.65%	1.15%	0.94%	1.40%	1.15%
Less: Fee waivers and/or expense reimbursements	[2]	(0.30%)	(0.30%)	(0.30%)	(0.23%)	(0.30%)	(0.30%)	(0.23%)	(0.30%)	(0.30%)
Total annual Fund operating expenses after fee waivers and/or reimbursements	[2]	1.10%	1.85%	1.85%	0.66%	1.35%	0.85%	0.71%	1.10%	0.85%

Example

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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that:

• you invest $10,000 in the applicable class of Fund shares for the periods indicated,

• your investment has a 5% return each year, and

• the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above.

Since the waivers and/or reimbursements shown in the Annual Fund Operating Expenses table above expire as indicated in the preceding table, they are only reflected in the 1 year example and the first year of the other examples. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:

Expense Example Columbia Convertible Securities Fund (USD $)	1 year	3 years	5 years	10 years
Class A	681	965	1,270	2,134
Class B	688	944	1,327	2,268
Class C	288	644	1,127	2,459
Class I	67	261	471	1,075
Class R	137	491	869	1,929
Class R4	87	336	604	1,371
Class R5	73	277	498	1,134
Class W	112	414	737	1,654
Class Z	87	336	604	1,371

Expense Example, No Redemption Columbia Convertible Securities Fund (USD $)	1 year	3 years	5 years	10 years
Class A	681	965	1,270	2,134
Class B	188	644	1,127	2,268
Class C	188	644	1,127	2,459
Class I	67	261	471	1,075
Class R	137	491	869	1,929
Class R4	87	336	604	1,371
Class R5	73	277	498	1,134
Class W	112	414	737	1,654
Class Z	87	336	604	1,371

Portfolio Turnover

The Fund may pay 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 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 71% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in convertible securities. The Fund may invest up to 15% of its total assets in Eurodollar convertible securities and up to an additional 20% of its total assets in foreign securities. Most convertible securities are not investment grade-rated. Convertible securities rated below investment grade may be referred to as “junk bonds.” The Fund also may invest in directly in equity securities.

The Fund looks for opportunities to participate in the potential growth of underlying common stocks, while seeking to earn income that is generally higher than the income those stocks provide. The Fund may sell common stocks short against positions in which the Fund has directly invested in convertible securities with no more than 10% of its assets. The Fund also may invest in private placements.

Principal Risks

An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down.

Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money.

Convertible Securities Risk. 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 also be forced to convert a convertible security at an inopportune time, which may decrease the Fund’s return.

Credit Risk. Credit risk is the risk that the issuer of a fixed-income security may or will default or otherwise become unable or unwilling, or is perceived to be unable or unwilling, to honor a financial obligation, such as making payments to the Fund when due. If the Fund purchases unrated securities, or if the rating of a security is lowered after purchase, the Fund will depend on analysis of credit risk more heavily than usual. Unrated securities held by the Fund may present increased credit risk as compared to higher-rated securities.

Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar.

Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies.

Interest Rate Risk. Interest rate risk is the risk of losses attributable to changes in interest rates. In general, if prevailing interest rates rise, the values of debt securities will tend to fall, and if interest rates fall, the values of debt securities will tend to rise. Changes in the value of a debt security usually will not affect the amount of income the Fund receives from it but may affect the value of the Fund's shares. In general, the longer the maturity or duration of a debt security, the greater its sensitivity to changes in interest rates. Interest rate declines also may increase prepayments of debt obligations, which, in turn, would increase prepayment risk. As interest rates rise or spreads widen, the likelihood of prepayment decreases.

Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors.

Low and Below Investment Grade (High-Yield) Securities Risk. Securities with the lowest investment grade rating, securities rated below investment grade (commonly called “high-yield” or “junk” bonds) and unrated securities of comparable quality expose the Fund to a greater risk of loss of principal and income than a fund that invests solely or primarily in investment grade securities. In addition, these investments have greater price fluctuations, are less liquid and are more likely to experience a default than higher-rated securities. High-yield securities are considered to be predominantly speculative with respect to the issuer’s capacity to pay interest and repay principal.

Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities.

Prepayment and Extension Risk. Prepayment and extension risk is the risk that a loan, bond or other security or investment might be called or otherwise converted, prepaid or redeemed before maturity, and the portfolio managers may not be able to invest the proceeds in other investments 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’s investments are locked in at a lower rate for a longer period of time.

Rule 144A Securities Risk. The Fund may invest significantly in Rule 144A securities that are determined to be liquid in accordance with procedures adopted by the Fund’s Board. However, an insufficient number of qualified institutional buyers interested in purchasing Rule 144A securities at a particular time could affect adversely the marketability of such securities and the Fund might be unable to dispose of such securities promptly or at reasonable prices. Accordingly, even if determined to be liquid, the Fund’s holdings of Rule 144A securities may increase the level of Fund illiquidity if eligible buyers become uninterested in buying them at a particular time.

Short Positions Risk. The Fund may establish short positions which introduce more risk to the Fund than long positions (where the Fund owns the instrument) because the maximum sustainable loss on an instrument purchased (held long) is limited to the amount paid for the instrument plus the transaction costs, whereas there is no maximum price of the shorted instrument when purchased in the open market. Therefore, in theory, short positions have unlimited risk. The Fund’s use of short positions in effect “leverages” the Fund. 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. To the extent the Fund takes a short position in a derivative instrument, this involves the risk of a potentially unlimited increase in the value of the underlying instrument.

Performance Information

The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.

The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (without applicable sales charges and adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities.

The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public.

The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.

Year by Year Total Return (%)
as of December 31 Each Year

Best and Worst Quarterly Returns
During the Period Shown in the Bar Chart

Best                              3rd Quarter 2009                            12.42%


Worst                           4th Quarter 2008                            -17.91%

Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)

Average Annual Total Returns Columbia Convertible Securities Fund	Share Class Inception Date	1 Year	5 Years	10 Years
Class A shares	Sep. 25, 1987	6.58%	1.32%	6.03%
Class A shares returns after taxes on distributions	Sep. 25, 1987	5.57%	0.39%	4.62%
Class A shares returns after taxes on distributions and sale of Fund shares	Sep. 25, 1987	4.37%	0.63%	4.61%
Class B shares	Jul. 15, 1998	7.19%	1.39%	5.86%
Class C shares	Oct. 21, 1996	11.24%	1.75%	5.86%
Class I shares	Sep. 27, 2010	13.44%	2.69%	6.75%
Class R shares	Nov. 16, 2011	12.82%	2.14%	6.24%
Class R4 shares	Nov. 08, 2012	13.09%	2.53%	6.67%
Class R5 shares	Nov. 08, 2012	13.12%	2.54%	6.67%
Class W shares	Nov. 16, 2011	13.08%	2.39%	6.50%
Class Z shares	May 21, 1999	13.32%	2.80%	6.92%
BofA Merrill Lynch All Convertibles All Qualities Index (reflects no deductions for fees, expenses or taxes)		14.96%	4.06%	7.31%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months after purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] This charge decreases over time.

[3] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

[1] Other expenses for Class A, Class B, Class C, Class R, Class W and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R4 and Class R5 are based on estimated amounts for the Fund's current fiscal year.

[2] Columbia Management Investment Advisers, LLC and certain of its affiliates have contractually agreed to waive fees and/or to reimburse expenses (excluding certain fees and expenses, such as transaction costs and certain other investment related expenses, interest, taxes, acquired fund fees and expenses, and extraordinary expenses) until June 30, 2014, unless sooner terminated at the sole discretion of the Fund's Board of Trustees. Under this agreement, the Fund's net operating expenses, subject to applicable exclusions, will not exceed the annual rates of 1.10% for Class A, 1.85% for Class B, 1.85% for Class C, 0.66% for Class I, 1.35% for Class R, 0.85% for Class R4, 0.71% for Class R5, 1.10% for Class W and 0.85% for Class Z.

[1] Year to Date return as of March 31, 2013: 7.75%

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Columbia Small Cap Value Fund II

Summary of the Fund

Investment Objective

Columbia Small Cap Value Fund II (the Fund) seeks long-term capital appreciation.

Fees and Expenses of the Fund

This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 19 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Columbia Small Cap Value Fund II	Class A		Class B		Class C		Class I	Class R	Class R4	Class R5	Class Y	Class Z
Maximum sales charge (load) imposed on purchases (as a % of offering price)	5.75%		none		none		none	none	none	none	none	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	1.00%	[1]	5.00%	[2]	1.00%	[3]	none	none	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Columbia Small Cap Value Fund II		Class A	Class B	Class C	Class I	Class R	Class R4	Class R5	Class Y	Class Z
Management fees		0.74%	0.74%	0.74%	0.74%	0.74%	0.74%	0.74%	0.74%	0.74%
Distribution and/or service (12b-1) fees		0.25%	1.00%	1.00%	none	0.50%	none	none	none	none
Other expenses	[1]	0.30%	0.30%	0.30%	0.12%	0.30%	0.30%	0.17%	0.12%	0.30%
Acquired fund fees and expenses		0.03%	0.03%	0.03%	0.03%	0.03%	0.03%	0.03%	0.03%	0.03%
Total annual Fund operating expenses	[2]	1.32%	2.07%	2.07%	0.89%	1.57%	1.07%	0.94%	0.89%	1.07%

Example

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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that:

• you invest $10,000 in the applicable class of Fund shares for the periods indicated,

• your investment has a 5% return each year, and

• the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above.

Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:

Expense Example Columbia Small Cap Value Fund II (USD $)	1 year	3 years	5 years	10 years
Class A	702	969	1,257	2,074
Class B	710	949	1,314	2,208
Class C	310	649	1,114	2,400
Class I	91	284	493	1,096
Class R	160	496	855	1,867
Class R4	109	340	590	1,306
Class R5	96	300	520	1,155
Class Y	91	284	493	1,096
Class Z	109	340	590	1,306

Expense Example, No Redemption Columbia Small Cap Value Fund II (USD $)	1 year	3 years	5 years	10 years
Class A	702	969	1,257	2,074
Class B	210	649	1,114	2,208
Class C	210	649	1,114	2,400
Class I	91	284	493	1,096
Class R	160	496	855	1,867
Class R4	109	340	590	1,306
Class R5	96	300	520	1,155
Class Y	91	284	493	1,096
Class Z	109	340	590	1,306

Portfolio Turnover

The Fund may pay 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 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 42% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in equity securities of companies that have market capitalizations in the range of the companies in the Russell 2000 Value Index at the time of purchase (between $14 million and $5.8 billion as of May 31, 2013) that the Fund’s investment manager believes are undervalued and have the potential for long-term growth.

The Fund may invest up to 20% of its total assets in foreign securities, including depositary receipts. The Fund normally invests in common stocks and also may invest in real estate investment trusts. The Fund may from time to time emphasize one or more economic sectors in selecting its investments.

The investment manager combines fundamental and quantitative analysis with risk management in identifying investment opportunities and constructing the Fund’s portfolio.

Principal Risks

An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down.

Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money.

Depositary Receipts Risks. Depositary receipts are receipts issued by a bank or trust company and evidence of ownership of underlying securities issued by foreign companies. Some foreign securities are traded in the form of American Depositary Receipts (ADRs). Depositary receipts involve the risks of other investments in foreign securities, including 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. In addition, ADR holders may not have all the legal rights of shareholders and may experience difficulty in receiving shareholder communications.

Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar.

Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies.

Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors.

Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities.

Quantitative Model Risk. Investments 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.

Real Estate-related Investment Risk. Investment in real estate investment trusts (REITs) and in securities of other companies (wherever organized) principally engaged in the real estate industry subjects the Fund to, among other risks, risks similar to those of direct investments in real estate and the real estate industry in general, including risks related to general and local economic conditions, possible lack of availability of financing and changes in interest rates or property values. REITs are entities that either own properties or make construction or mortgage loans, and also may include operating or finance companies. The value of REIT shares is affected by, among other factors, changes in the value of the underlying properties owned by the REIT, by changes in the prospect for earnings and/or cash flow growth of the REIT itself, defaults by borrowers or tenants, market saturation, decreases in market rates for rents, and other economic, political, or regulatory matters affecting the real estate industry, including REITs. REITs and similar non-U.S. entities depend upon specialized management skills, may have limited financial resources, may have less trading volume in their securities, and may be subject to more abrupt or erratic price movements than the overall securities markets. REITs are also subject to the risk of failing to qualify for tax-free pass-through of income. Some REITs (especially mortgage REITs) are affected by risks similar to those associated with investments in debt securities including changes in interest rates and the quality of credit extended.

Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within an economic sector, including the financial services sector. Companies in the same economic sector may be similarly affected by economic, regulatory, political or market events or conditions, making the Fund more vulnerable to unfavorable developments in that economic sector than funds that invest more broadly. The more a fund diversifies its investments, the more it spreads risk and potentially reduces the risks of loss and volatility. Because the Fund’s portfolio managers may invest significantly in the financial services sector, the Fund may be more susceptible to the particular risks of the financial services sector than if the Fund were invested in a wider variety of companies in unrelated industries.

Small Company Securities Risk. Investments in small-capitalization companies (small-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small-cap companies may be less liquid and more volatile than the securities of larger companies.

Value Securities Risk. Value securities are securities of companies that may have experienced, for example, adverse business, industry or other developments or may be subject to special risks that have caused the securities to be out of favor and, in turn, potentially undervalued. The market value of a portfolio security may not meet the portfolio manager's perceived value assessment of that security, or may decline in price, even though the portfolio manager(s) believe(s) the securities are already undervalued. There is also a risk that it may take longer than expected for the value of these investments to rise to the portfolio manager’s perceived value. In addition, value securities, at times, may not perform as well as growth securities or the stock market in general, and may be out of favor with investors for varying periods of time.

Performance Information

The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.

The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (without applicable sales charges and adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities.

The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public.

The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.

Year by Year Total Return (%)
as of December 31 Each Year

Best and Worst Quarterly Returns
During the Period Shown in the Bar Chart

Best                              3rd Quarter 2009                            21.81%


Worst                           4th Quarter 2008                            -23.89%

Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)

Average Annual Total Returns Columbia Small Cap Value Fund II	Share Class Inception Date	1 Year	5 Years	10 Years
Class A shares	May 01, 2002	7.67%	1.67%	9.52%
Class A shares returns after taxes on distributions	May 01, 2002	7.19%	1.52%	8.69%
Class A shares returns after taxes on distributions and sale of Fund shares	May 01, 2002	5.60%	1.40%	8.11%
Class B shares	May 01, 2002	8.36%	1.72%	9.34%
Class C shares	May 01, 2002	12.37%	2.11%	9.33%
Class I shares	Sep. 27, 2010	14.78%	3.13%	10.30%
Class R shares	Jan. 23, 2006	13.98%	2.63%	9.89%
Class R4 shares	Nov. 08, 2012	14.29%	2.89%	10.18%
Class R5 shares	Nov. 08, 2012	14.32%	2.90%	10.18%
Class Y shares	Nov. 08, 2012	14.35%	2.91%	10.18%
Class Z shares	May 01, 2002	14.57%	3.14%	10.45%
Russell 2000 Value Index (reflects no deductions for fees, expenses or taxes)		18.05%	3.55%	9.50%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] This charge decreases over time.

[3] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

[1] Other expenses for Class A, Class B, Class C, Class R and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R4, Class R5 and Class Y are based on estimated amounts for the Fund's current fiscal year.

[2] "Total annual Fund operating expenses" in the table (which includes acquired fund fees and expenses) may not match "Net Expenses" in the Financial Highlights section of this prospectus because it does not include such acquired fund fees and expenses.

[1] Year to Date return as of March 31, 2013: 13.92%

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	COLUMBIA FUNDS SERIES TRUST
Prospectus Date	rr_ProspectusDate	Jul. 01, 2013
Columbia Marsico Global Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Summary of the Fund
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Columbia Marsico Global Fund (the Fund) seeks long-term growth of capital.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 21 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	June 30, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund may pay 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 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 98% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	98.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 21 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 50,000
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Management fees have been restated to reflect contractual changes to the investment management fee rates. Other expenses have been restated to reflect contractual changes to certain fees paid by the Fund.
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that: you invest $10,000 in the applicable class of Fund shares for the periods indicated, your investment has a 5% return each year, and the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above. Since the waivers and/or reimbursements shown in the Annual Fund Operating Expenses table above expire as indicated in the preceding table, they are only reflected in the 1 year example and the first year of the other examples.  Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Fund will invest significantly (generally, at least 40% of its net assets) in the securities of companies organized or located outside the United States or doing business outside the United States (unless market conditions are not deemed favorable by the portfolio managers, in which case the Fund generally will invest at least 30% of net assets in such foreign securities). The Fund normally invests in common stocks and may invest in companies of any size throughout the world that are selected for their long-term growth potential. The Fund normally invests in companies from at least three different countries, including the United States, and may invest in companies operating in or economically tied to emerging market countries. The Fund may invest without limit in foreign securities. These securities may be publicly traded in the United States or in foreign markets or both, and may be bought and sold in a foreign currency that the Fund may or may not also hold. The portfolio managers generally select foreign securities on a security-by-security basis based primarily on considerations such as growth potential rather than geographic location or other considerations. Primarily for hedging purposes, the Fund may invest in derivatives, including futures (including futures on securities indices and foreign currencies), forward contracts on foreign currencies, options (including options on securities and securities indices) and other derivative instruments. The core investments of the Fund (i.e., the primary investments held by the Fund over time) generally may include established companies and securities that are expected to offer long-term growth potential. However, the Fund's portfolio also may typically include securities of less mature companies, securities with more aggressive growth characteristics, and securities of companies undergoing significant positive developments, such as, without limitation, the introduction of a new product line, the appointment of a new management team, or an acquisition. The Fund’s investment strategy may involve the frequent trading of portfolio securities. This may cause the Fund to incur higher transaction costs (which may adversely affect the Fund’s performance) and may increase taxable distributions for shareholders.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down. Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money. Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund. Derivatives Risk/Forward Foreign Currency Contracts Risk. These instruments are a type of derivative contract whereby the Fund may agree to buy or sell a country’s or region’s currency at a specific price on a specific date in the future. These contracts may fall in value due to foreign market downswings or foreign currency value fluctuations. The Fund’s investment or hedging strategies may not achieve their objective. Investment in these instruments also subjects the Fund to counterparty risk. Derivatives Risk/Futures Contracts Risk. The loss that may be incurred in entering into futures contracts may exceed the amount of the premium paid and may be potentially unlimited. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value (NAV). Additionally, as a result of the low collateral deposits normally involved in futures trading, a relatively small price movement in a futures contract may result in substantial losses to the Fund. Futures contracts may be illiquid. Furthermore, exchanges may limit fluctuations in futures contract prices during a trading session by imposing a maximum permissible price movement on each futures contract. The Fund may be disadvantaged if it is prohibited from executing a trade outside the daily permissible price movement. Futures contracts executed on foreign exchanges may not provide the same protection as U.S. exchanges. These transactions involve additional risks, including counterparty risk, hedging risk and pricing risk. Derivatives Risk/Options Risk. If the Fund sells a put option, there is a risk that the Fund may be required to buy the underlying asset at a disadvantageous price. If the Fund sells a call option, there is a risk that the Fund may be required to sell the underlying asset at a disadvantageous price, and if the call option sold is not covered (for example, by owning the underlying asset), the Fund's losses are potentially unlimited. These transactions involve other risks, including counterparty risk and hedging risk. Emerging Market Securities Risk. Securities issued by foreign governments or companies in emerging market countries are more likely to have greater exposure to the risks of investing in foreign securities that are described in Foreign Securities Risk. In addition, emerging market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Their economies are usually less mature and their securities markets are typically less developed with more limited trading activity (i.e., lower trading volumes and less liquidity) than more developed countries. Emerging market securities tend to be more volatile than securities in more developed markets. Many emerging market countries are heavily dependent on international trade and have fewer trading partners, which makes them more sensitive to world commodity prices and economic downturns in other countries, and some have a higher risk of currency devaluations. Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar. Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies. Frequent Trading Risk.  The portfolio managers may actively and frequently trade investments in the Fund's portfolio to carry out its investment strategies. Frequent trading of investments increases the possibility that the Fund, as relevant, will realize taxable capital gains (including short-term capital gains, which are generally taxable to shareholders at higher rates than long-term capital gains for U.S. federal income tax purposes), which could reduce the Fund's after-tax return. Frequent trading can also mean higher brokerage and other transaction costs, which could reduce the Fund's return. The trading costs and tax effects associated with portfolio turnover may adversely affect the Fund’s performance. Geographic Concentration Risk/Europe Risk. The Fund may be particularly susceptible to economic, political, regulatory or other events or conditions affecting issuers and countries in Europe. Currency devaluations could occur in countries that have not yet experienced currency devaluation to date, or could continue to occur in countries that have already experienced such devaluations. In addition, the private and public sectors’ debt problems of a single EU country can pose significant economic risks to the EU as a whole. As a result, the Fund may be more volatile than a more geographically diversified fund. If securities of issuers in Europe fall out of favor, it may cause the Fund to underperform other funds that do not concentrate in this region of the world. Growth Securities Risk. Growth securities typically trade at a higher multiple of earnings than other types of equity securities. Accordingly, the market values of growth securities may be more sensitive to adverse economic or other circumstances or changes in current or expected earnings than the market values of other types of securities. In addition, growth securities, at times, may not perform as well as value securities or the stock market in general, and may be out of favor with investors for varying periods of time. Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors. Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities. Small- and Mid-Cap Company Securities Risk. Investments in small- and mid-capitalization companies (small- and mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small- and mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small- and mid-cap companies may be less liquid and more volatile than the securities of larger companies.
Risk Lose Money [Text]	rr_RiskLoseMoney	There is no assurance that the Fund will achieve its investment objective and you may lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because the Fund has less than ten calendar years of performance and Class A shares are at least as old as any other share class of the Fund. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance. The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares. After-tax returns are shown for Class A shares because the Fund has less than ten calendar years of performance and Class A shares are at least as old as any other share class of the Fund. The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because the Fund has less than ten calendar years of performance and Class A shares are at least as old as any other share class of the Fund. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	800.345.6611
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	columbiamanagement.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Year by Year Total Return (%) as of December 31 Each Year
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best and Worst Quarterly Returns During the Period Shown in the Bar Chart Best                              1st Quarter 2012                            21.68% Worst                           3rd Quarter 2011                            -20.45%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs).
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	The after-tax returns are shown only for Class A shares and will vary for other share classes.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares.
Columbia Marsico Global Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	5.75%
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[1]
Management fees	rr_ManagementFeesOverAssets	0.79%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	1.05%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	2.09%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.59%)	[4]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	1.50%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	719
3 years	rr_ExpenseExampleYear03	1,139
5 years	rr_ExpenseExampleYear05	1,583
10 years	rr_ExpenseExampleYear10	2,813
1 year	rr_ExpenseExampleNoRedemptionYear01	719
3 years	rr_ExpenseExampleNoRedemptionYear03	1,139
5 years	rr_ExpenseExampleNoRedemptionYear05	1,583
10 years	rr_ExpenseExampleNoRedemptionYear10	2,813
2009	rr_AnnualReturn2009	33.94%	[5]
2010	rr_AnnualReturn2010	24.20%	[5]
2011	rr_AnnualReturn2011	(12.28%)	[5]
2012	rr_AnnualReturn2012	20.28%	[5]
Year to Date Return, Label	rr_YearToDateReturnLabel	Year to Date return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	8.24%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Mar. 31, 2012
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	21.68%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2011
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(20.45%)
1 Year	rr_AverageAnnualReturnYear01	13.41%
Life of Fund	rr_AverageAnnualReturnSinceInception	(0.12%)
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 30, 2008
Columbia Marsico Global Fund | Class C
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[6]
Management fees	rr_ManagementFeesOverAssets	0.79%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	1.05%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	2.84%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.59%)	[4]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	2.25%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge applies to redemptions within one year of purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	328
3 years	rr_ExpenseExampleYear03	824
5 years	rr_ExpenseExampleYear05	1,447
10 years	rr_ExpenseExampleYear10	3,124
1 year	rr_ExpenseExampleNoRedemptionYear01	228
3 years	rr_ExpenseExampleNoRedemptionYear03	824
5 years	rr_ExpenseExampleNoRedemptionYear05	1,447
10 years	rr_ExpenseExampleNoRedemptionYear10	3,124
1 Year	rr_AverageAnnualReturnYear01	18.45%
Life of Fund	rr_AverageAnnualReturnSinceInception	0.40%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 30, 2008
Columbia Marsico Global Fund | Class R
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.79%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.50%
Other expenses	rr_OtherExpensesOverAssets	1.05%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	2.34%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.59%)	[4]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	1.75%
1 year	rr_ExpenseExampleYear01	178
3 years	rr_ExpenseExampleYear03	674
5 years	rr_ExpenseExampleYear05	1,197
10 years	rr_ExpenseExampleYear10	2,631
1 year	rr_ExpenseExampleNoRedemptionYear01	178
3 years	rr_ExpenseExampleNoRedemptionYear03	674
5 years	rr_ExpenseExampleNoRedemptionYear05	1,197
10 years	rr_ExpenseExampleNoRedemptionYear10	2,631
1 Year	rr_AverageAnnualReturnYear01	20.05%
Life of Fund	rr_AverageAnnualReturnSinceInception	0.90%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 30, 2008
Columbia Marsico Global Fund | Class Z
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.79%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	1.05%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.84%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.59%)	[4]
Total annual Fund operating expenses after fee waivers and/or reimbursements	rr_NetExpensesOverAssets	1.25%
1 year	rr_ExpenseExampleYear01	127
3 years	rr_ExpenseExampleYear03	521
5 years	rr_ExpenseExampleYear05	941
10 years	rr_ExpenseExampleYear10	2,110
1 year	rr_ExpenseExampleNoRedemptionYear01	127
3 years	rr_ExpenseExampleNoRedemptionYear03	521
5 years	rr_ExpenseExampleNoRedemptionYear05	941
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 2,110
1 Year	rr_AverageAnnualReturnYear01	20.65%
Life of Fund	rr_AverageAnnualReturnSinceInception	1.40%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 30, 2008
Columbia Marsico Global Fund | returns after taxes on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	13.41%
Life of Fund	rr_AverageAnnualReturnSinceInception	(0.19%)
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 30, 2008
Columbia Marsico Global Fund | returns after taxes on distributions and sale of Fund shares | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	8.71%
Life of Fund	rr_AverageAnnualReturnSinceInception	(0.11%)
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Apr. 30, 2008
Columbia Marsico Global Fund | MSCI All Country World Index (Net) (reflects reinvested dividends net of withholding taxes but reflects no deductions for fees, expenses or other taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	16.13%
Life of Fund	rr_AverageAnnualReturnSinceInception	(0.32%)

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] Management fees have been restated to reflect contractual changes to the investment management fee rates.

[3] Other expenses have been restated to reflect contractual changes to certain fees paid by the Fund.

[4] Columbia Management Investment Advisers, LLC and certain of its affiliates have contractually agreed to waive fees and/or to reimburse expenses (excluding certain fees and expenses, such as transaction costs and certain other investment related expenses, interest, taxes, acquired fund fees and expenses, and extraordinary expenses) until June 30, 2014, unless sooner terminated at the sole discretion of the Fund's Board of Trustees. Under this agreement, the Fund's net operating expenses, subject to applicable exclusions, will not exceed the annual rates of 1.50% for Class A, 2.25% for Class C, 1.75% for Class R and 1.25% for Class Z.

[5] Year to Date return as of March 31, 2013: 8.24%

[6] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	COLUMBIA FUNDS SERIES TRUST
Prospectus Date	rr_ProspectusDate	Jul. 01, 2013
Document Creation Date	dei_DocumentCreationDate	Jun. 27, 2013

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	COLUMBIA FUNDS SERIES TRUST
Prospectus Date	rr_ProspectusDate	Jul. 01, 2013
Columbia Mid Cap Index Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Summary of the Fund
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Columbia Mid Cap Index Fund (the Fund) seeks total return before fees and expenses that corresponds to the total return of the Standard & Poor’s (S&P) MidCap 400® Index.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	June 30, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund may pay 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 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 20% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	20.00%
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	other expenses for Class R5 are based on estimated amounts for the Fund’s current fiscal year.
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Other expenses for Class A and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	“Total annual Fund operating expenses” in the table (which includes acquired fund fees and expenses) may not match “Net Expenses” in the Financial Highlights section of this prospectus because it does not include such acquired fund fees and expenses.
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that: you invest $10,000 in the applicable class of Fund shares for the periods indicated, your investment has a 5% return each year, and the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above. Since the waivers and/or reimbursements shown in the Annual Fund Operating Expenses table above expire as indicated in the preceding table, they are only reflected in the 1 year example and the first year of the other examples. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in common stocks that comprise the S&P MidCap 400 Index (the Index). The Fund may invest in derivatives, consisting of stock index futures, as substitutes for the underlying securities in the Index. Different common stocks have different weightings in the Index, depending on the amount of stock outstanding and the stock’s current price. In seeking to match the performance of the Index, Columbia Management Investment Advisers, LLC (the Investment Manager) attempts to allocate the Fund’s assets among common stocks in approximately the same weightings as the Index. This is referred to as a passive or indexing approach to investing. The Fund attempts to achieve at least a 95% correlation between the performance of the Index and the Fund’s investment results, before fees and expenses.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down. Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund. Derivatives Risk/Futures Contracts Risk. The loss that may be incurred in entering into futures contracts may exceed the amount of the premium paid and may be potentially unlimited. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value (NAV). Additionally, as a result of the low collateral deposits normally involved in futures trading, a relatively small price movement in a futures contract may result in substantial losses to the Fund. Futures contracts may be illiquid. Furthermore, exchanges may limit fluctuations in futures contract prices during a trading session by imposing a maximum permissible price movement on each futures contract. The Fund may be disadvantaged if it is prohibited from executing a trade outside the daily permissible price movement. Futures contracts executed on foreign exchanges may not provide the same protection as U.S. exchanges. These transactions involve additional risks, including counterparty risk, hedging risk and pricing risk. Index Risk. The Fund's value will generally decline when the performance of its targeted index declines. In addition, because the Fund may not hold all issues included in its index, it may not always be fully invested. The Fund also bears advisory, administrative and other expenses and transaction costs in trading securities, which the index does not bear. Accordingly, the Fund's performance will likely fail to match the performance of its targeted index, after taking expenses into account. It is not possible to invest directly in an index. Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors. Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities. Mid-Cap Company Securities Risk. Investments in mid-capitalization companies (mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and may be less liquid than the securities of larger companies, and securities of mid-cap companies may be less liquid than the securities of larger companies. Tracking Error Risk. The Fund will not track its benchmark index perfectly and the Fund may not outperform the index. The tools that the Investment Manager uses to replicate the index are not perfect and the Fund’s performance may be impacted by the size of the Fund’s portfolio, the effectiveness of sampling techniques, transaction costs, management fees and expenses, brokerage commissions and fees, the extent and timing of cash flows in and out of the Fund and changes in the index.
Risk Lose Money [Text]	rr_RiskLoseMoney	There is no assurance that the Fund will achieve its investment objective and you may lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance has varied for each full calendar year shown. The table below the bar chart compares the Fund’s returns for the periods shown with benchmark performance. Class A share performance is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class Z shares (adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities. The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance has varied for each full calendar year shown. The table below the bar chart compares the Fund’s returns for the periods shown with benchmark performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	800.345.6611
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	columbiamanagement.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Year by Year Total Return (%) as of December 31 Each Year
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best and Worst Quarterly Returns During the Period Shown in the Bar Chart Best                              3rd Quarter 2009                            19.84% Worst                           4th Quarter 2008                            -25.53%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs).
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	The after-tax returns are shown only for Class A shares and will vary for other share classes.
Columbia Mid Cap Index Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.10%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.31%	[1]
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.67%	[2]
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.21%)	[3]
Total annual Fund operating expenses after fee waivers and/or expense reimbursements	rr_NetExpensesOverAssets	0.46%
1 year	rr_ExpenseExampleYear01	$ 47
3 years	rr_ExpenseExampleYear03	193
5 years	rr_ExpenseExampleYear05	352
10 years	rr_ExpenseExampleYear10	815
1 year	rr_ExpenseExampleNoRedemptionYear01	47
3 years	rr_ExpenseExampleNoRedemptionYear03	193
5 years	rr_ExpenseExampleNoRedemptionYear05	352
10 years	rr_ExpenseExampleNoRedemptionYear10	815
2003	rr_AnnualReturn2003	34.79%	[4]
2004	rr_AnnualReturn2004	15.96%	[4]
2005	rr_AnnualReturn2005	12.31%	[4]
2006	rr_AnnualReturn2006	9.96%	[4]
2007	rr_AnnualReturn2007	7.64%	[4]
2008	rr_AnnualReturn2008	(36.26%)	[4]
2009	rr_AnnualReturn2009	36.79%	[4]
2010	rr_AnnualReturn2010	26.05%	[4]
2011	rr_AnnualReturn2011	(2.14%)	[4]
2012	rr_AnnualReturn2012	17.31%	[4]
Year to Date Return, Label	rr_YearToDateReturnLabel	Year to Date return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	13.33%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Sep. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	19.84%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(25.53%)
1 Year	rr_AverageAnnualReturnYear01	17.31%
5 Years	rr_AverageAnnualReturnYear05	4.76%
10 Years	rr_AverageAnnualReturnYear10	10.12%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	May 31, 2000
Columbia Mid Cap Index Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.10%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.12%	[1]
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.23%	[2]
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.02%)	[3]
Total annual Fund operating expenses after fee waivers and/or expense reimbursements	rr_NetExpensesOverAssets	0.21%
1 year	rr_ExpenseExampleYear01	22
3 years	rr_ExpenseExampleYear03	72
5 years	rr_ExpenseExampleYear05	127
10 years	rr_ExpenseExampleYear10	291
1 year	rr_ExpenseExampleNoRedemptionYear01	22
3 years	rr_ExpenseExampleNoRedemptionYear03	72
5 years	rr_ExpenseExampleNoRedemptionYear05	127
10 years	rr_ExpenseExampleNoRedemptionYear10	291
1 Year	rr_AverageAnnualReturnYear01	17.74%
5 Years	rr_AverageAnnualReturnYear05	5.03%
10 Years	rr_AverageAnnualReturnYear10	10.40%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 27, 2010
Columbia Mid Cap Index Fund | Class R5
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.10%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.17%	[1]
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.28%	[2]
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.07%)	[3]
Total annual Fund operating expenses after fee waivers and/or expense reimbursements	rr_NetExpensesOverAssets	0.21%
1 year	rr_ExpenseExampleYear01	22
3 years	rr_ExpenseExampleYear03	83
5 years	rr_ExpenseExampleYear05	150
10 years	rr_ExpenseExampleYear10	349
1 year	rr_ExpenseExampleNoRedemptionYear01	22
3 years	rr_ExpenseExampleNoRedemptionYear03	83
5 years	rr_ExpenseExampleNoRedemptionYear05	150
10 years	rr_ExpenseExampleNoRedemptionYear10	349
1 Year	rr_AverageAnnualReturnYear01	17.62%
5 Years	rr_AverageAnnualReturnYear05	5.02%
10 Years	rr_AverageAnnualReturnYear10	10.40%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 11, 2012
Columbia Mid Cap Index Fund | Class Z
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.10%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.31%	[1]
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.42%	[2]
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.21%)	[3]
Total annual Fund operating expenses after fee waivers and/or expense reimbursements	rr_NetExpensesOverAssets	0.21%
1 year	rr_ExpenseExampleYear01	22
3 years	rr_ExpenseExampleYear03	114
5 years	rr_ExpenseExampleYear05	214
10 years	rr_ExpenseExampleYear10	509
1 year	rr_ExpenseExampleNoRedemptionYear01	22
3 years	rr_ExpenseExampleNoRedemptionYear03	114
5 years	rr_ExpenseExampleNoRedemptionYear05	214
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 509
1 Year	rr_AverageAnnualReturnYear01	17.56%
5 Years	rr_AverageAnnualReturnYear05	5.01%
10 Years	rr_AverageAnnualReturnYear10	10.40%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 31, 2000
Columbia Mid Cap Index Fund | returns after taxes on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	16.28%
5 Years	rr_AverageAnnualReturnYear05	4.00%
10 Years	rr_AverageAnnualReturnYear10	9.22%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	May 31, 2000
Columbia Mid Cap Index Fund | returns after taxes on distributions and sale of Fund shares | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	12.51%
5 Years	rr_AverageAnnualReturnYear05	3.88%
10 Years	rr_AverageAnnualReturnYear10	8.73%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	May 31, 2000
Columbia Mid Cap Index Fund | S&P MidCap 400 Index (reflects no deductions for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	17.88%
5 Years	rr_AverageAnnualReturnYear05	5.15%
10 Years	rr_AverageAnnualReturnYear10	10.53%

[1] Other expenses for Class A and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R5 are based on estimated amounts for the Fund’s current fiscal year.

[2] “Total annual Fund operating expenses” in the table (which includes acquired fund fees and expenses) may not match “Net Expenses” in the Financial Highlights section of this prospectus because it does not include such acquired fund fees and expenses.

[3] Columbia Management Investment Advisers, LLC and certain of its affiliates have contractually agreed to waive fees and/or to reimburse expenses (excluding certain fees and expenses, such as transaction costs and certain other investment related expenses, interest, taxes, acquired fund fees and expenses, and extraordinary expenses) until June 30, 2014, unless sooner terminated at the sole discretion of the Fund's Board of Trustees. Under this agreement, the Fund's net operating expenses, subject to applicable exclusions, will not exceed the annual rates of 0.45% for Class A, 0.20% for Class I, 0.20% for Class R5 and 0.20% for Class Z.

[4] Year to Date return as of March 31, 2013: 13.33%

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Columbia Marsico 21st Century Fund

Summary of the Fund

Investment Objective

Columbia Marsico 21st Century Fund (the Fund) seeks long-term growth of capital.

Fees and Expenses of the Fund

This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 19 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Columbia Marsico 21st Century Fund	Class A		Class B		Class C		Class R	Class R4	Class Z
Maximum sales charge (load) imposed on purchases (as a % of offering price)	5.75%		none		none		none	none	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	1.00%	[1]	5.00%	[2]	1.00%	[3]	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Columbia Marsico 21st Century Fund		Class A	Class B	Class C	Class R	Class R4	Class Z
Management fees	[1]	0.67%	0.67%	0.67%	0.67%	0.67%	0.67%
Distribution and/or service (12b-1) fees		0.25%	1.00%	1.00%	0.50%	none	none
Other expenses	[2]	0.26%	0.26%	0.26%	0.26%	0.26%	0.26%
Total annual Fund operating expenses		1.18%	1.93%	1.93%	1.43%	0.93%	0.93%

Example

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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that:

• you invest $10,000 in the applicable class of Fund shares for the periods indicated,

• your investment has a 5% return each year, and

• the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above.

Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:

Expense Example Columbia Marsico 21st Century Fund (USD $)	1 year	3 years	5 years	10 years
Class A	688	928	1,187	1,924
Class B	696	906	1,242	2,059
Class C	296	606	1,042	2,254
Class R	146	452	782	1,713
Class R4	95	296	515	1,143
Class Z	95	296	515	1,143

Expense Example, No Redemption Columbia Marsico 21st Century Fund (USD $)	1 year	3 years	5 years	10 years
Class A	688	928	1,187	1,924
Class B	196	606	1,042	2,059
Class C	196	606	1,042	2,254
Class R	146	452	782	1,713
Class R4	95	296	515	1,143
Class Z	95	296	515	1,143

Portfolio Turnover

The Fund may pay 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 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 65% of the average value of its portfolio.

Principal Investment Strategies

The Fund invests primarily in equity securities of companies of any capitalization size and generally will hold a core position of between 35 and 50 common stocks.

The number of securities held by the Fund occasionally may exceed this range, such as when the Fund is accumulating new positions, phasing out and replacing existing positions, or responding to exceptional market conditions. The Fund may invest without limit in foreign securities, including in emerging market securities. The Fund may from time to time emphasize one or more economic sectors in selecting its investments.

The Fund also may invest in foreign currency exchange contracts to convert foreign currencies to and from the U.S. dollar, and to hedge against changes in foreign currency exchange rates.

The core investments of the Fund (i.e., the primary investments held by the Fund over time) generally may include established companies and securities that are expected to offer long-term growth potential. However, the Fund's portfolio also may typically include securities of less mature companies, securities with more aggressive growth characteristics, and securities of companies undergoing significant positive developments, such as, without limitation, the introduction of a new product line, the appointment of a new management team, or an acquisition.

The Fund’s investment strategy may involve the frequent trading of portfolio securities. This may cause the Fund to incur higher transaction costs (which may adversely affect the Fund’s performance) and may increase taxable distributions for shareholders.

Principal Risks

An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down.

Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money.

Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund.

Derivatives Risk/Forward Foreign Currency Contracts Risk. These instruments are a type of derivative contract whereby the Fund may agree to buy or sell a country’s or region’s currency at a specific price on a specific date in the future. These contracts may fall in value due to foreign market downswings or foreign currency value fluctuations. The Fund’s investment or hedging strategies may not achieve their objective. Investment in these instruments also subjects the Fund to counterparty risk.

Emerging Market Securities Risk. Securities issued by foreign governments or companies in emerging market countries are more likely to have greater exposure to the risks of investing in foreign securities that are described in Foreign Securities Risk. In addition, emerging market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Their economies are usually less mature and their securities markets are typically less developed with more limited trading activity (i.e., lower trading volumes and less liquidity) than more developed countries. Emerging market securities tend to be more volatile than securities in more developed markets. Many emerging market countries are heavily dependent on international trade and have fewer trading partners, which makes them more sensitive to world commodity prices and economic downturns in other countries, and some have a higher risk of currency devaluations.

Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar.

Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies.

Frequent Trading Risk.  The portfolio managers may actively and frequently trade investments in the Fund's portfolio to carry out its investment strategies. Frequent trading of investments increases the possibility that the Fund, as relevant, will realize taxable capital gains (including short-term capital gains, which are generally taxable to shareholders at higher rates than long-term capital gains for U.S. federal income tax purposes), which could reduce the Fund's after-tax return. Frequent trading can also mean higher brokerage and other transaction costs, which could reduce the Fund's return. The trading costs and tax effects associated with portfolio turnover may adversely affect the Fund’s performance.

Growth Securities Risk. Growth securities typically trade at a higher multiple of earnings than other types of equity securities. Accordingly, the market values of growth securities may be more sensitive to adverse economic or other circumstances or changes in current or expected earnings than the market values of other types of securities. In addition, growth securities, at times, may not perform as well as value securities or the stock market in general, and may be out of favor with investors for varying periods of time.

Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors.

Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities.

Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within an economic sector. Companies in the same economic sector may be similarly affected by economic, regulatory, political or market events or conditions, making the Fund more vulnerable to unfavorable developments in that economic  sector than funds that invest more broadly. The more a fund diversifies its investments, the more it spreads risk and potentially reduces the risks of loss and volatility.

Small- and Mid-Cap Company Securities Risk. Investments in small- and mid-capitalization companies (small- and mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small- and mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small- and mid-cap companies may be less liquid and more volatile than the securities of larger companies.

Performance Information

The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.

The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (without applicable sales charges and adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities.

The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public.

The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.

Year by Year Total Return (%)
as of December 31 Each Year

Best and Worst Quarterly Returns
During the Period Shown in the Bar Chart

Best                              2nd Quarter 2003                            22.13%


Worst                           4th Quarter 2008                            -25.12%

Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)

Average Annual Total Returns Columbia Marsico 21st Century Fund	Share Class Inception Date	1 Year	5 Years	10 Years
Class A shares	Apr. 10, 2000	5.32%	(5.29%)	7.79%
Class A shares returns after taxes on distributions	Apr. 10, 2000	5.32%	(5.29%)	7.67%
Class A shares returns after taxes on distributions and sale of Fund shares	Apr. 10, 2000	3.47%	(4.42%)	6.88%
Class B shares	Apr. 10, 2000	5.98%	(5.27%)	7.61%
Class C shares	Apr. 10, 2000	9.98%	(4.88%)	7.61%
Class R shares	Jan. 23, 2006	11.62%	(4.40%)	8.16%
Class R4 shares	Nov. 08, 2012	11.84%	(4.16%)	8.44%
Class Z shares	Apr. 10, 2000	12.15%	(3.93%)	8.69%
Russell 3000 Index (reflects no deductions for fees, expenses or taxes)		16.42%	2.04%	7.68%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] This charge decreases over time.

[3] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

[1] Management fees have been restated to reflect contractual changes to the investment management fee rates.

[2] Other expenses for Class A, Class B, Class C, Class R and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R4 are based on estimated amounts for the Fund's current fiscal year.

[1] Year to Date return as of March 31, 2013: 10.52%

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Columbia Small Cap Index Fund

Summary of the Fund

Investment Objective

Columbia Small Cap Index Fund (the Fund) seeks total return before fees and expenses that corresponds to the total return of the Standard & Poor’s (S&P) SmallCap 600^® Index.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Columbia Small Cap Index Fund	Class A	Class B		Class K	Class I	Class R5	Class Z
Maximum sales charge (load) imposed on purchases (as a % of offering price)	none	none		none	none	none	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	none	5.00%	[1]	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Columbia Small Cap Index Fund		Class A	Class B	Class I	Class K	Class R5	Class Z
Management fees		0.10%	0.10%	0.10%	0.10%	0.10%	0.10%
Distribution and/or service (12b-1) fees		0.25%	1.00%	none	none	none	none
Other expenses		0.10%	0.10%	0.10%	0.35%	0.10%	0.10%
Acquired fund fees and expenses		0.03%	0.03%	0.03%	0.03%	0.03%	0.03%
Total annual Fund operating expenses	[1]	0.48%	1.23%	0.23%	0.48%	0.23%	0.23%

Example

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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that:

• you invest $10,000 in the applicable class of Fund shares for the periods indicated,

• your investment has a 5% return each year, and

• the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above.

Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:

Expense Example Columbia Small Cap Index Fund (USD $)	1 year	3 years	5 years	10 years
Class A	49	154	269	604
Class B	625	690	876	1,280
Class I	24	74	130	293
Class K	49	154	269	604
Class R5	24	74	130	293
Class Z	24	74	130	293

Expense Example, No Redemption Columbia Small Cap Index Fund (USD $)	1 year	3 years	5 years	10 years
Class A	49	154	269	604
Class B	125	390	676	1,280
Class I	24	74	130	293
Class K	49	154	269	604
Class R5	24	74	130	293
Class Z	24	74	130	293

Portfolio Turnover

The Fund may pay 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 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 17% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in common stocks that comprise the S&P SmallCap 600 Index (the Index). The Fund may invest in derivatives, consisting of relevant stock index futures, to gain exposure to the small cap equity market pending direct investments in securities.

Different common stocks have different weightings in the Index, depending on the amount of stock outstanding and the stock’s current price. In seeking to match the performance of the Index, Columbia Management Investment Advisers, LLC (the Investment Manager) attempts to allocate the Fund’s assets among common stocks in approximately the same weightings as the Index. This is referred to as a passive or indexing approach to investing.

The Fund attempts to achieve at least a 95% correlation between the performance of the Index and the Fund’s investment results, before fees and expenses.

Principal Risks

An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down.

Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund.

Derivatives Risk/Futures Contracts Risk. The loss that may be incurred in entering into futures contracts may exceed the amount of the premium paid and may be potentially unlimited. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value (NAV). Additionally, as a result of the low collateral deposits normally involved in futures trading, a relatively small price movement in a futures contract may result in substantial losses to the Fund. Futures contracts may be illiquid. Furthermore, exchanges may limit fluctuations in futures contract prices during a trading session by imposing a maximum permissible price movement on each futures contract. The Fund may be disadvantaged if it is prohibited from executing a trade outside the daily permissible price movement. Futures contracts executed on foreign exchanges may not provide the same protection as U.S. exchanges. These transactions involve additional risks, including counterparty risk, hedging risk and pricing risk.

Index Risk. The Fund's value will generally decline when the performance of its targeted index declines. In addition, because the Fund may not hold all issues included in its index, it may not always be fully invested. The Fund also bears advisory, administrative and other expenses and transaction costs in trading securities, which the index does not bear. Accordingly, the Fund's performance will likely fail to match the performance of its targeted index, after taking expenses into account. It is not possible to invest directly in an index.

Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors.

Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities.

Small Company Securities Risk. Investments in small-capitalization companies (small-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small-cap companies may be less liquid and more volatile than the securities of larger companies.

Tracking Error Risk. The Fund will not track its benchmark index perfectly and the Fund may not outperform the index. The tools that the Investment Manager uses to replicate the index are not perfect and the Fund’s performance may be impacted by the size of the Fund’s portfolio, the effectiveness of sampling techniques, transaction costs, management fees and expenses, brokerage commissions and fees, the extent and timing of cash flows in and out of the Fund and changes in the index.

Performance Information

The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance has varied for each full calendar year shown. Class A share performance is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.

The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities.

The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public.

The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.

Year by Year Total Return (%)
as of December 31 Each Year

Best and Worst Quarterly Returns
During the Period Shown in the Bar Chart

Best                              2nd Quarter 2009                            21.02%


Worst                           4th Quarter 2008                            -25.03%

Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)

Average Annual Total Returns Columbia Small Cap Index Fund	Share Class Inception Date	1 Year	5 Years	10 Years
Class A shares	Oct. 15, 1996	15.96%	4.84%	10.03%
Class A shares returns after taxes on distributions	Oct. 15, 1996	14.83%	3.81%	9.00%
Class A shares returns after taxes on distributions and sale of Fund shares	Oct. 15, 1996	11.73%	3.85%	8.63%
Class B shares	Mar. 07, 2011	10.06%	3.73%	9.21%
Class I shares	Nov. 16, 2011	16.28%	4.90%	10.06%
Class K shares	Mar. 07, 2011	15.91%	4.83%	10.03%
Class R5 shares	Nov. 08, 2012	15.98%	4.84%	10.04%
Class Z shares	Oct. 15, 1996	16.19%	5.09%	10.31%
S&P SmallCap 600 Index (reflects no deductions for fees, expenses or taxes)		16.33%	5.14%	10.45%

[1] This charge decreases over time.

[1] "Total annual Fund operating expenses" in the table (which includes acquired fund fees and expenses) may not match "Net Expenses" in the Financial Highlights section of this prospectus because it does not include such acquired fund fees and expenses.

[1] Year to Date return as of March 31, 2013: 11.68%

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Columbia Marsico International Opportunities Fund

Summary of the Fund

Investment Objective

Columbia Marsico International Opportunities Fund (the Fund) seeks long-term growth of capital.

Fees and Expenses of the Fund

This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 19 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Columbia Marsico International Opportunities Fund	Class A		Class B		Class C		Class I	Class R	Class R4	Class Z
Maximum sales charge (load) imposed on purchases (as a % of offering price)	5.75%		none		none		none	none	none	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	1.00%	[1]	5.00%	[2]	1.00%	[3]	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Columbia Marsico International Opportunities Fund		Class A	Class B	Class C	Class I	Class R	Class R4	Class Z
Management fees	[1]	0.79%	0.79%	0.79%	0.79%	0.79%	0.79%	0.79%
Distribution and/or service (12b-1) fees		0.25%	1.00%	1.00%	none	0.50%	none	none
Other expenses	[2]	0.33%	0.33%	0.33%	0.14%	0.33%	0.33%	0.33%
Total annual Fund operating expenses		1.37%	2.12%	2.12%	0.93%	1.62%	1.12%	1.12%

Example

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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that:

• you invest $10,000 in the applicable class of Fund shares for the periods indicated,

• your investment has a 5% return each year, and

• the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above.

Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:

Expense Example Columbia Marsico International Opportunities Fund (USD $)	1 year	3 years	5 years	10 years
Class A	706	984	1,282	2,127
Class B	715	964	1,339	2,261
Class C	315	664	1,139	2,452
Class I	95	296	515	1,143
Class R	165	511	881	1,922
Class R4	114	356	617	1,363
Class Z	114	356	617	1,363

Expense Example, No Redemption Columbia Marsico International Opportunities Fund (USD $)	1 year	3 years	5 years	10 years
Class A	706	984	1,282	2,127
Class B	215	664	1,139	2,261
Class C	215	664	1,139	2,452
Class I	95	296	515	1,143
Class R	165	511	881	1,922
Class R4	114	356	617	1,363
Class Z	114	356	617	1,363

Portfolio Turnover

The Fund may pay 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 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 73% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund invests at least 65% of its total assets in common stocks of foreign companies. The Fund may invest in an unlimited number of companies of any size throughout the world that are selected for their long-term growth potential. The Fund normally invests in issuers from at least three different countries not including the United States. The Fund may invest in common stocks of companies operating in, or economically tied to, emerging market countries. Some issuers or securities in the Fund's portfolio may be based in, or economically tied to, the United States.

The Fund also may invest in foreign currency exchange contracts to convert foreign currencies to and from the U.S. dollar, and to hedge against changes in foreign currency exchange rates.

The core investments of the Fund (i.e., the primary investments held by the Fund over time) generally may include established companies and securities that are expected to offer long-term growth potential. However, the Fund's portfolio also may typically include securities of less mature companies, securities with more aggressive growth characteristics, and securities of companies undergoing significant positive developments, such as, without limitation, the introduction of a new product line, the appointment of a new management team, or an acquisition.

The Fund’s investment strategy may involve the frequent trading of portfolio securities. This may cause the Fund to incur higher transaction costs (which may adversely affect the Fund’s performance) and may increase taxable distributions for shareholders.

Principal Risks

An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down.

Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money.

Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund.

Derivatives Risk/Forward Foreign Currency Contracts Risk. These instruments are a type of derivative contract whereby the Fund may agree to buy or sell a country’s or region’s currency at a specific price on a specific date in the future. These contracts may fall in value due to foreign market downswings or foreign currency value fluctuations. The Fund’s investment or hedging strategies may not achieve their objective. Investment in these instruments also subjects the Fund to counterparty risk.

Emerging Market Securities Risk. Securities issued by foreign governments or companies in emerging market countries are more likely to have greater exposure to the risks of investing in foreign securities that are described in Foreign Securities Risk. In addition, emerging market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Their economies are usually less mature and their securities markets are typically less developed with more limited trading activity (i.e., lower trading volumes and less liquidity) than more developed countries. Emerging market securities tend to be more volatile than securities in more developed markets. Many emerging market countries are heavily dependent on international trade and have fewer trading partners, which makes them more sensitive to world commodity prices and economic downturns in other countries, and some have a higher risk of currency devaluations.

Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar.

Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies.

Frequent Trading Risk.  The portfolio managers may actively and frequently trade investments in the Fund's portfolio to carry out its investment strategies. Frequent trading of investments increases the possibility that the Fund, as relevant, will realize taxable capital gains (including short-term capital gains, which are generally taxable to shareholders at higher rates than long-term capital gains for U.S. federal income tax purposes), which could reduce the Fund's after-tax return. Frequent trading can also mean higher brokerage and other transaction costs, which could reduce the Fund's return. The trading costs and tax effects associated with portfolio turnover may adversely affect the Fund’s performance.

Geographic Concentration Risk/Europe Risk. The Fund may be particularly susceptible to economic, political, regulatory or other events or conditions affecting issuers and countries in Europe. Currency devaluations could occur in countries that have not yet experienced currency devaluation to date, or could continue to occur in countries that have already experienced such devaluations. In addition, the private and public sectors’ debt problems of a single EU country can pose significant economic risks to the EU as a whole. As a result, the Fund may be more volatile than a more geographically diversified fund. If securities of issuers in Europe fall out of favor, it may cause the Fund to underperform other funds that do not concentrate in this region of the world.

Growth Securities Risk. Growth securities typically trade at a higher multiple of earnings than other types of equity securities. Accordingly, the market values of growth securities may be more sensitive to adverse economic or other circumstances or changes in current or expected earnings than the market values of other types of securities. In addition, growth securities, at times, may not perform as well as value securities or the stock market in general, and may be out of favor with investors for varying periods of time.

Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors.

Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities.

Small- and Mid-Cap Company Securities Risk. Investments in small- and mid-capitalization companies (small- and mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small- and mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small- and mid-cap companies may be less liquid and more volatile than the securities of larger companies.

Performance Information

The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.

The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (without applicable sales charges and adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities.

The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public.

The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.

Year by Year Total Return (%)
as of December 31 Each Year

Best and Worst Quarterly Returns
During the Period Shown in the Bar Chart

Best                              2nd Quarter 2009                            26.57%


Worst                           4th Quarter 2008                            -27.68%

Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)

Average Annual Total Returns Columbia Marsico International Opportunities Fund	Share Class Inception Date	1 Year	5 Years	10 Years
Class A shares	Aug. 01, 2000	11.02%	(6.33%)	7.66%
Class A shares returns after taxes on distributions	Aug. 01, 2000	11.02%	(6.49%)	6.97%
Class A shares returns after taxes on distributions and sale of Fund shares	Aug. 01, 2000	7.16%	(5.30%)	6.61%
Class B shares	Aug. 01, 2000	12.01%	(6.30%)	7.49%
Class C shares	Aug. 01, 2000	15.88%	(5.94%)	7.49%
Class I shares	Sep. 27, 2010	18.41%	(4.92%)	8.47%
Class R shares	Jan. 23, 2006	17.51%	(5.46%)	8.03%
Class R4 shares	Nov. 08, 2012	17.94%	(5.20%)	8.31%
Class Z shares	Aug. 01, 2000	18.14%	(4.99%)	8.56%
MSCI EAFE Index (Net) (reflects reinvested dividends net of withholding taxes but reflects no deductions for fees, expenses or other taxes)		17.32%	(3.69%)	8.21%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, charged as follows: 1.00% CDSC if redeemed within 12 months of purchase, and 0.50% CDSC if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] This charge decreases over time.

[3] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

[1] Management fees have been restated to reflect contractual changes to the investment management fee rates.

[2] Other expenses for Class A, Class B, Class C, Class R and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R4 are based on estimated amounts for the Fund's current fiscal year.

[1] Year to Date return as of March 31, 2013: 4.70%

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Columbia Mid Cap Value Fund

Summary of the Fund

Investment Objective

Columbia Mid Cap Value Fund (the Fund) seeks long-term capital appreciation.

Fees and Expenses of the Fund

This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 18 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Columbia Mid Cap Value Fund	Class A		Class B		Class C		Class I	Class K	Class R	Class R4	Class R5	Class W	Class Y	Class Z
Maximum sales charge (load) imposed on purchases (as a % of offering price)	5.75%		none		none		none	none	none	none	none	none	none	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	1.00%	[1]	5.00%	[2]	1.00%	[3]	none	none	none	none	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Columbia Mid Cap Value Fund		Class A	Class B	Class C	Class I	Class K	Class R	Class R4	Class R5	Class W	Class Y	Class Z
Management fees		0.66%	0.66%	0.66%	0.66%	0.66%	0.66%	0.66%	0.66%	0.66%	0.66%	0.66%
Distribution and/or service (12b-1) fees		0.25%	1.00%	1.00%	none	none	0.50%	none	none	0.25%	none	none
Other expenses	[1]	0.29%	0.29%	0.29%	0.08%	0.38%	0.29%	0.29%	0.13%	0.29%	0.08%	0.29%
Total annual Fund operating expenses		1.20%	1.95%	1.95%	0.74%	1.04%	1.45%	0.95%	0.79%	1.20%	0.74%	0.95%

Example

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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that:

• you invest $10,000 in the applicable class of Fund shares for the periods indicated,

• your investment has a 5% return each year, and

• the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above.

Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:

Expense Example Columbia Mid Cap Value Fund (USD $)	1 year	3 years	5 years	10 years
Class A	690	934	1,197	1,946
Class B	698	912	1,252	2,080
Class C	298	612	1,052	2,275
Class I	76	237	411	918
Class K	106	331	574	1,271
Class R	148	459	792	1,735
Class R4	97	303	525	1,166
Class R5	81	252	439	978
Class W	122	381	660	1,455
Class Y	76	237	411	918
Class Z	97	303	525	1,166

Expense Example, No Redemption Columbia Mid Cap Value Fund (USD $)	1 year	3 years	5 years	10 years
Class A	690	934	1,197	1,946
Class B	198	612	1,052	2,080
Class C	198	612	1,052	2,275
Class I	76	237	411	918
Class K	106	331	574	1,271
Class R	148	459	792	1,735
Class R4	97	303	525	1,166
Class R5	81	252	439	978
Class W	122	381	660	1,455
Class Y	76	237	411	918
Class Z	97	303	525	1,166

Portfolio Turnover

The Fund may pay 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 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 36% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in equity securities of companies that have market capitalizations in the range of the companies in the Russell Midcap Value Index (the Index) at the time of purchase (between $438 million and $30.4 billion as of May 31, 2013), that the Fund’s investment manager believes are undervalued and have the potential for long-term growth.

The Fund may invest up to 20% of its total assets in foreign securities. The Fund normally invests in common stocks and also may invest in real estate investment trusts. The Fund may from time to time emphasize one or more economic sectors in selecting its investments.

The investment manager combines fundamental and quantitative analysis with risk management in identifying value opportunities and constructing the Fund's portfolio.

Principal Risks

An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down.

Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money.

Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies.

Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors.

Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities.

Quantitative Model Risk. Investments 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.

Real Estate-related Investment Risk. Investment in real estate investment trusts (REITs) and in securities of other companies (wherever organized) principally engaged in the real estate industry subjects the Fund to, among other risks, risks similar to those of direct investments in real estate and the real estate industry in general, including risks related to general and local economic conditions, possible lack of availability of financing and changes in interest rates or property values. REITs are entities that either own properties or make construction or mortgage loans, and also may include operating or finance companies. The value of REIT shares is affected by, among other factors, changes in the value of the underlying properties owned by the REIT, by changes in the prospect for earnings and/or cash flow growth of the REIT itself, defaults by borrowers or tenants, market saturation, decreases in market rates for rents, and other economic, political, or regulatory matters affecting the real estate industry, including REITs. REITs and similar non-U.S. entities depend upon specialized management skills, may have limited financial resources, may have less trading volume in their securities, and may be subject to more abrupt or erratic price movements than the overall securities markets. REITs are also subject to the risk of failing to qualify for tax-free pass-through of income. Some REITs (especially mortgage REITs) are affected by risks similar to those associated with investments in debt securities including changes in interest rates and the quality of credit extended.

Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within an economic sector, including the financial services sector. Companies in the same economic sector may be similarly affected by economic, regulatory, political or market events or conditions, making the Fund more vulnerable to unfavorable developments in that economic sector than funds that invest more broadly. The more a fund diversifies its investments, the more it spreads risk and potentially reduces the risks of loss and volatility. Because the Fund’s portfolio managers may invest significantly in the financial services sector, the Fund may be more susceptible to the particular risks of the financial services sector than if the Fund were invested in a wider variety of companies in unrelated industries.

Small- and Mid-Cap Company Securities Risk. Investments in small- and mid-capitalization companies (small- and mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small- and mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small- and mid-cap companies may be less liquid and more volatile than the securities of larger companies.

Value Securities Risk. Value securities are securities of companies that may have experienced, for example, adverse business, industry or other developments or may be subject to special risks that have caused the securities to be out of favor and, in turn, potentially undervalued. The market value of a portfolio security may not meet the portfolio manager's perceived value assessment of that security, or may decline in price, even though the portfolio manager(s) believe(s) the securities are already undervalued. There is also a risk that it may take longer than expected for the value of these investments to rise to the portfolio manager’s perceived value. In addition, value securities, at times, may not perform as well as growth securities or the stock market in general, and may be out of favor with investors for varying periods of time.

Performance Information

The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.

The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (without applicable sales charges and adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities.

The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public.

The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.

Year by Year Total Return (%)
as of December 31 Each Year

Best and Worst Quarterly Returns
During the Period Shown in the Bar Chart

Best                              3rd Quarter 2009                            20.74%


Worst                           4th Quarter 2008                            -27.98%

Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)

Average Annual Total Returns Columbia Mid Cap Value Fund	Share Class Inception Date	1 Year	5 Years	10 Years
Class A shares	Nov. 20, 2001	9.80%	(0.10%)	8.97%
Class A shares returns after taxes on distributions	Nov. 20, 2001	9.67%	(0.23%)	8.12%
Class A shares returns after taxes on distributions and sale of Fund shares	Nov. 20, 2001	6.52%	(0.11%)	7.67%
Class B shares	Nov. 20, 2001	10.62%	(0.07%)	8.80%
Class C shares	Nov. 20, 2001	14.64%	0.34%	8.81%
Class I shares	Sep. 27, 2010	17.09%	1.30%	9.74%
Class K shares	Mar. 07, 2011	16.87%	1.16%	9.67%
Class R shares	Jan. 23, 2006	16.30%	0.84%	9.35%
Class R4 shares	Nov. 08, 2012	16.56%	1.10%	9.63%
Class R5 shares	Nov. 08, 2012	16.58%	1.10%	9.63%
Class W shares	Sep. 27, 2010	16.47%	1.10%	9.63%
Class Y shares	Jul. 15, 2009	16.98%	1.31%	9.75%
Class Z shares	Nov. 20, 2001	16.84%	1.34%	9.90%
Russell Midcap Value Index (reflects no deductions for fees, expenses or taxes)		18.51%	3.79%	10.63%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] This charge decreases over time.

[3] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

[1] Other expenses for Class A, Class B, Class C, Class K, Class R, Class W, Class Y and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R4 and Class R5 are based on estimated amounts for the Fund's current fiscal year.

[1] Year to Date return as of March 31, 2013: 12.43%

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Columbia Mid Cap Index Fund

Summary of the Fund

Investment Objective

Columbia Mid Cap Index Fund (the Fund) seeks total return before fees and expenses that corresponds to the total return of the Standard & Poor’s (S&P) MidCap 400^® Index.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Columbia Mid Cap Index Fund	Class A	Class I	Class R5	Class Z
Maximum sales charge (load) imposed on purchases (as a % of offering price)	none	none	none	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Columbia Mid Cap Index Fund		Class A	Class I	Class R5	Class Z
Management fees		0.10%	0.10%	0.10%	0.10%
Distribution and/or service (12b-1) fees		0.25%	none	none	none
Other expenses	[1]	0.31%	0.12%	0.17%	0.31%
Acquired fund fees and expenses		0.01%	0.01%	0.01%	0.01%
Total annual Fund operating expenses	[2]	0.67%	0.23%	0.28%	0.42%
Less: Fee waivers and/or expense reimbursements	[3]	(0.21%)	(0.02%)	(0.07%)	(0.21%)
Total annual Fund operating expenses after fee waivers and/or reimbursements		0.46%	0.21%	0.21%	0.21%

Example

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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that:

• you invest $10,000 in the applicable class of Fund shares for the periods indicated,

• your investment has a 5% return each year, and

• the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above.

Since the waivers and/or reimbursements shown in the Annual Fund Operating Expenses table above expire as indicated in the preceding table, they are only reflected in the 1 year example and the first year of the other examples. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:

Expense Example Columbia Mid Cap Index Fund (USD $)	1 year	3 years	5 years	10 years
Class A	47	193	352	815
Class I	22	72	127	291
Class R5	22	83	150	349
Class Z	22	114	214	509

Expense Example, No Redemption Columbia Mid Cap Index Fund (USD $)	1 year	3 years	5 years	10 years
Class A	47	193	352	815
Class I	22	72	127	291
Class R5	22	83	150	349
Class Z	22	114	214	509

Portfolio Turnover

The Fund may pay 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 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 20% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in common stocks that comprise the S&P MidCap 400 Index (the Index). The Fund may invest in derivatives, consisting of stock index futures, as substitutes for the underlying securities in the Index.

Different common stocks have different weightings in the Index, depending on the amount of stock outstanding and the stock’s current price. In seeking to match the performance of the Index, Columbia Management Investment Advisers, LLC (the Investment Manager) attempts to allocate the Fund’s assets among common stocks in approximately the same weightings as the Index. This is referred to as a passive or indexing approach to investing.

The Fund attempts to achieve at least a 95% correlation between the performance of the Index and the Fund’s investment results, before fees and expenses.

Principal Risks

An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down.

Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund.

Derivatives Risk/Futures Contracts Risk. The loss that may be incurred in entering into futures contracts may exceed the amount of the premium paid and may be potentially unlimited. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value (NAV). Additionally, as a result of the low collateral deposits normally involved in futures trading, a relatively small price movement in a futures contract may result in substantial losses to the Fund. Futures contracts may be illiquid. Furthermore, exchanges may limit fluctuations in futures contract prices during a trading session by imposing a maximum permissible price movement on each futures contract. The Fund may be disadvantaged if it is prohibited from executing a trade outside the daily permissible price movement. Futures contracts executed on foreign exchanges may not provide the same protection as U.S. exchanges. These transactions involve additional risks, including counterparty risk, hedging risk and pricing risk.

Index Risk. The Fund's value will generally decline when the performance of its targeted index declines. In addition, because the Fund may not hold all issues included in its index, it may not always be fully invested. The Fund also bears advisory, administrative and other expenses and transaction costs in trading securities, which the index does not bear. Accordingly, the Fund's performance will likely fail to match the performance of its targeted index, after taking expenses into account. It is not possible to invest directly in an index.

Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors.

Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities.

Mid-Cap Company Securities Risk. Investments in mid-capitalization companies (mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and may be less liquid than the securities of larger companies, and securities of mid-cap companies may be less liquid than the securities of larger companies.

Tracking Error Risk. The Fund will not track its benchmark index perfectly and the Fund may not outperform the index. The tools that the Investment Manager uses to replicate the index are not perfect and the Fund’s performance may be impacted by the size of the Fund’s portfolio, the effectiveness of sampling techniques, transaction costs, management fees and expenses, brokerage commissions and fees, the extent and timing of cash flows in and out of the Fund and changes in the index.

Performance Information

The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance has varied for each full calendar year shown. The table below the bar chart compares the Fund’s returns for the periods shown with benchmark performance.

Class A share performance is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class Z shares (adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date.

Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities.

The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public.

The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.

Year by Year Total Return (%)
as of December 31 Each Year

Best and Worst Quarterly Returns
During the Period Shown in the Bar Chart

Best                              3rd Quarter 2009                            19.84%


Worst                           4th Quarter 2008                            -25.53%

Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)

Average Annual Total Returns Columbia Mid Cap Index Fund	Share Class Inception Date	1 Year	5 Years	10 Years
Class A shares	May 31, 2000	17.31%	4.76%	10.12%
Class A shares returns after taxes on distributions	May 31, 2000	16.28%	4.00%	9.22%
Class A shares returns after taxes on distributions and sale of Fund shares	May 31, 2000	12.51%	3.88%	8.73%
Class I shares	Sep. 27, 2010	17.74%	5.03%	10.40%
Class R5 shares	Aug. 11, 2012	17.62%	5.02%	10.40%
Class Z shares	Mar. 31, 2000	17.56%	5.01%	10.40%
S&P MidCap 400 Index (reflects no deductions for fees, expenses or taxes)		17.88%	5.15%	10.53%

[1] Other expenses for Class A and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R5 are based on estimated amounts for the Fund’s current fiscal year.

[2] “Total annual Fund operating expenses” in the table (which includes acquired fund fees and expenses) may not match “Net Expenses” in the Financial Highlights section of this prospectus because it does not include such acquired fund fees and expenses.

[3] Columbia Management Investment Advisers, LLC and certain of its affiliates have contractually agreed to waive fees and/or to reimburse expenses (excluding certain fees and expenses, such as transaction costs and certain other investment related expenses, interest, taxes, acquired fund fees and expenses, and extraordinary expenses) until June 30, 2014, unless sooner terminated at the sole discretion of the Fund's Board of Trustees. Under this agreement, the Fund's net operating expenses, subject to applicable exclusions, will not exceed the annual rates of 0.45% for Class A, 0.20% for Class I, 0.20% for Class R5 and 0.20% for Class Z.

[1] Year to Date return as of March 31, 2013: 13.33%

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	COLUMBIA FUNDS SERIES TRUST
Prospectus Date	rr_ProspectusDate	Jul. 01, 2013
Columbia Large Cap Enhanced Core Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Summary of the Fund
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Columbia Large Cap Enhanced Core Fund (the Fund) seeks total return before fees and expenses that exceeds the total return of the Standard & Poor's (S&P) 500® Index.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	June 30, 2014
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund may pay 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 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 92% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	92.00%
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Other expenses have been restated to reflect contractual changes to certain fees paid by the Fund.
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that: you invest $10,000 in the applicable class of Fund shares for the periods indicated, your investment has a 5% return each year, and the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above. Since the waivers and/or reimbursements shown in the Annual Fund Operating Expenses table above expire as indicated in the preceding table, they are only reflected in the examples for the applicable time periods. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in common stocks that comprise the S&P 500 Index (the Index), convertible securities that are convertible into stocks included in the Index, and derivatives whose returns are closely equivalent to the returns of the Index or its components. The Fund primarily invests in securities included in the Index but generally holds fewer stocks than the Index and may hold securities that are not in the Index. Although the Fund’s investment manager attempts to maintain a portfolio that generally matches the risk characteristics of the Index, it will vary the number and percentages of the Fund’s holdings in attempting to provide higher returns than the Index and to reduce the potential of underperforming the Index over time. The Fund may from time to time emphasize one or more economic sectors in selecting its investments. In pursuit of the Fund’s objective, the portfolio managers use quantitative analysis to evaluate the relative attractiveness of potential investments. The Fund may invest in derivatives, such as futures contracts, for investment purposes, for risk management (hedging) purposes and to increase investment flexibility.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down. Active Management Risk. Although the Fund is managed based primarily on quantitative methods, the Investment Manager conducts a qualitative review of the quantitative output. Therefore, the Fund’s performance will reflect, in part, the ability of the Investment Manager to make active, qualitative decisions, including allocation decisions that seek to achieve the Fund’s investment objective. Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund. Derivatives Risk/Futures Contracts Risk. The loss that may be incurred in entering into futures contracts may exceed the amount of the premium paid and may be potentially unlimited. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value (NAV). Additionally, as a result of the low collateral deposits normally involved in futures trading, a relatively small price movement in a futures contract may result in substantial losses to the Fund. Futures contracts may be illiquid. Furthermore, exchanges may limit fluctuations in futures contract prices during a trading session by imposing a maximum permissible price movement on each futures contract. The Fund may be disadvantaged if it is prohibited from executing a trade outside the daily permissible price movement. Futures contracts executed on foreign exchanges may not provide the same protection as U.S. exchanges. These transactions involve additional risks, including counterparty risk, hedging risk and pricing risk. Index Risk. The Fund's value will generally decline when the performance of its targeted index declines. In addition, because the Fund may not hold all issues included in its index, it may not always be fully invested. The Fund also bears advisory, administrative and other expenses and transaction costs in trading securities, which the index does not bear. Accordingly, the Fund's performance will likely fail to match the performance of its targeted index, after taking expenses into account. It is not possible to invest directly in an index. Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors. Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities. Quantitative Model Risk. Investments 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. Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within an economic sector. Companies in the same economic sector may be similarly affected by economic, regulatory, political or market events or conditions, making the Fund more vulnerable to unfavorable developments in that economic  sector than funds that invest more broadly. The more a fund diversifies its investments, the more it spreads risk and potentially reduces the risks of loss and volatility.
Risk Lose Money [Text]	rr_RiskLoseMoney	There is no assurance that the Fund will achieve its investment objective and you may lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance has varied for each full calendar year shown. The table below the bar chart compares the Fund’s returns for the periods shown with benchmark performance. Class A share performance is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities. The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance has varied for each full calendar year shown. The table below the bar chart compares the Fund’s returns for the periods shown with benchmark performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	800.345.6611
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	columbiamanagement.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Year by Year Total Return (%) as of December 31 Each Year
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best and Worst Quarterly Returns During the Period Shown in the Bar Chart Best                              2nd Quarter 2009                            15.66% Worst                           4th Quarter 2008                            -21.41%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs).
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	The after-tax returns are shown only for Class A shares and will vary for other share classes.
Columbia Large Cap Enhanced Core Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.69%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.35%	[1]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.29%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.39%)	[2]
Total annual Fund operating expenses after fee waivers and/or expense reimbursements	rr_NetExpensesOverAssets	0.90%
1 year	rr_ExpenseExampleYear01	$ 92
3 years	rr_ExpenseExampleYear03	365
5 years	rr_ExpenseExampleYear05	665
10 years	rr_ExpenseExampleYear10	1,518
1 year	rr_ExpenseExampleNoRedemptionYear01	92
3 years	rr_ExpenseExampleNoRedemptionYear03	365
5 years	rr_ExpenseExampleNoRedemptionYear05	665
10 years	rr_ExpenseExampleNoRedemptionYear10	1,518
2003	rr_AnnualReturn2003	29.43%	[3]
2004	rr_AnnualReturn2004	10.23%	[3]
2005	rr_AnnualReturn2005	6.47%	[3]
2006	rr_AnnualReturn2006	16.42%	[3]
2007	rr_AnnualReturn2007	3.83%	[3]
2008	rr_AnnualReturn2008	(36.73%)	[3]
2009	rr_AnnualReturn2009	23.89%	[3]
2010	rr_AnnualReturn2010	13.01%	[3]
2011	rr_AnnualReturn2011	4.36%	[3]
2012	rr_AnnualReturn2012	15.78%	[3]
Year to Date Return, Label	rr_YearToDateReturnLabel	Year to Date return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	10.33%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	15.66%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(21.41%)
1 Year	rr_AverageAnnualReturnYear01	15.78%
5 Years	rr_AverageAnnualReturnYear05	1.37%
10 Years	rr_AverageAnnualReturnYear10	6.99%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 31, 1996
Columbia Large Cap Enhanced Core Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.69%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.15%	[1]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.84%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.35%)	[2]
Total annual Fund operating expenses after fee waivers and/or expense reimbursements	rr_NetExpensesOverAssets	0.49%
1 year	rr_ExpenseExampleYear01	50
3 years	rr_ExpenseExampleYear03	228
5 years	rr_ExpenseExampleYear05	426
10 years	rr_ExpenseExampleYear10	1,000
1 year	rr_ExpenseExampleNoRedemptionYear01	50
3 years	rr_ExpenseExampleNoRedemptionYear03	228
5 years	rr_ExpenseExampleNoRedemptionYear05	426
10 years	rr_ExpenseExampleNoRedemptionYear10	1,000
1 Year	rr_AverageAnnualReturnYear01	16.17%
5 Years	rr_AverageAnnualReturnYear05	1.52%
10 Years	rr_AverageAnnualReturnYear10	7.07%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 27, 2010
Columbia Large Cap Enhanced Core Fund | Class R
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.69%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.50%
Other expenses	rr_OtherExpensesOverAssets	0.35%	[1]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.54%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.39%)	[2]
Total annual Fund operating expenses after fee waivers and/or expense reimbursements	rr_NetExpensesOverAssets	1.15%
1 year	rr_ExpenseExampleYear01	117
3 years	rr_ExpenseExampleYear03	443
5 years	rr_ExpenseExampleYear05	798
10 years	rr_ExpenseExampleYear10	1,797
1 year	rr_ExpenseExampleNoRedemptionYear01	117
3 years	rr_ExpenseExampleNoRedemptionYear03	443
5 years	rr_ExpenseExampleNoRedemptionYear05	798
10 years	rr_ExpenseExampleNoRedemptionYear10	1,797
1 Year	rr_AverageAnnualReturnYear01	15.52%
5 Years	rr_AverageAnnualReturnYear05	1.11%
10 Years	rr_AverageAnnualReturnYear10	6.72%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 23, 2006
Columbia Large Cap Enhanced Core Fund | Class Y
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.69%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.15%	[1]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.84%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.35%)	[2]
Total annual Fund operating expenses after fee waivers and/or expense reimbursements	rr_NetExpensesOverAssets	0.49%
1 year	rr_ExpenseExampleYear01	50
3 years	rr_ExpenseExampleYear03	228
5 years	rr_ExpenseExampleYear05	426
10 years	rr_ExpenseExampleYear10	1,000
1 year	rr_ExpenseExampleNoRedemptionYear01	50
3 years	rr_ExpenseExampleNoRedemptionYear03	228
5 years	rr_ExpenseExampleNoRedemptionYear05	426
10 years	rr_ExpenseExampleNoRedemptionYear10	1,000
1 Year	rr_AverageAnnualReturnYear01	16.15%
5 Years	rr_AverageAnnualReturnYear05	1.62%
10 Years	rr_AverageAnnualReturnYear10	7.12%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 15, 2009
Columbia Large Cap Enhanced Core Fund | Class Z
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.69%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.35%	[1]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.04%
Less: Fee waivers and/or expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.39%)	[2]
Total annual Fund operating expenses after fee waivers and/or expense reimbursements	rr_NetExpensesOverAssets	0.65%
1 year	rr_ExpenseExampleYear01	66
3 years	rr_ExpenseExampleYear03	287
5 years	rr_ExpenseExampleYear05	531
10 years	rr_ExpenseExampleYear10	1,231
1 year	rr_ExpenseExampleNoRedemptionYear01	66
3 years	rr_ExpenseExampleNoRedemptionYear03	287
5 years	rr_ExpenseExampleNoRedemptionYear05	531
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 1,231
1 Year	rr_AverageAnnualReturnYear01	16.12%
5 Years	rr_AverageAnnualReturnYear05	1.62%
10 Years	rr_AverageAnnualReturnYear10	7.25%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 31, 1996
Columbia Large Cap Enhanced Core Fund | returns after taxes on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	15.52%
5 Years	rr_AverageAnnualReturnYear05	1.14%
10 Years	rr_AverageAnnualReturnYear10	6.05%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 31, 1996
Columbia Large Cap Enhanced Core Fund | returns after taxes on distributions and sale of Fund shares | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	10.60%
5 Years	rr_AverageAnnualReturnYear05	1.13%
10 Years	rr_AverageAnnualReturnYear10	5.69%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 31, 1996
Columbia Large Cap Enhanced Core Fund | S&P 500 Index (reflects no deductions for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	16.00%
5 Years	rr_AverageAnnualReturnYear05	1.66%
10 Years	rr_AverageAnnualReturnYear10	7.10%

[1] Other expenses have been restated to reflect contractual changes to certain fees paid by the Fund.

[2] Columbia Management Investment Advisers, LLC (the Investment Manager) and certain of its affiliates have contractually agreed to waive fees and/or to reimburse expenses (excluding certain fees and expenses, such as transaction costs and certain other investment related expenses, interest, taxes, acquired fund fees and expenses, and extraordinary expenses) until June 30, 2014, unless sooner terminated at the sole discretion of the Fund's Board of Trustees. Under this agreement, the Fund's net operating expenses, subject to applicable exclusions, will not exceed the annual rates of 0.90% for Class A, 0.49% for Class I, 1.15% for Class R, 0.49% for Class Y and 0.65% for Class Z. Separately, the Investment Manager has contractually agreed to waive a portion of the investment management fee so that the net fee would be 0.59% and 0.64% in the fiscal periods ending June 30, 2014 and June 30, 2015, respectively.

[3] Year to Date return as of March 31, 2013: 10.33%

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	COLUMBIA FUNDS SERIES TRUST
Prospectus Date	rr_ProspectusDate	Jul. 01, 2013
Columbia Mid Cap Value Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Summary of the Fund
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Columbia Mid Cap Value Fund (the Fund) seeks long-term capital appreciation.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 18 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund may pay 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 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 36% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	36.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 18 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 50,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	other expenses for Class R4 and Class R5 are based on estimated amounts for the Fund’s current fiscal year.
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Other expenses for Class A, Class B, Class C, Class K, Class R, Class W, Class Y and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that: you invest $10,000 in the applicable class of Fund shares for the periods indicated, your investment has a 5% return each year, and the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in equity securities of companies that have market capitalizations in the range of the companies in the Russell Midcap Value Index (the Index) at the time of purchase (between $438 million and $30.4 billion as of May 31, 2013), that the Fund’s investment manager believes are undervalued and have the potential for long-term growth. The Fund may invest up to 20% of its total assets in foreign securities. The Fund normally invests in common stocks and also may invest in real estate investment trusts. The Fund may from time to time emphasize one or more economic sectors in selecting its investments. The investment manager combines fundamental and quantitative analysis with risk management in identifying value opportunities and constructing the Fund's portfolio.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down. Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money. Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies. Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors. Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities. Quantitative Model Risk. Investments 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. Real Estate-related Investment Risk. Investment in real estate investment trusts (REITs) and in securities of other companies (wherever organized) principally engaged in the real estate industry subjects the Fund to, among other risks, risks similar to those of direct investments in real estate and the real estate industry in general, including risks related to general and local economic conditions, possible lack of availability of financing and changes in interest rates or property values. REITs are entities that either own properties or make construction or mortgage loans, and also may include operating or finance companies. The value of REIT shares is affected by, among other factors, changes in the value of the underlying properties owned by the REIT, by changes in the prospect for earnings and/or cash flow growth of the REIT itself, defaults by borrowers or tenants, market saturation, decreases in market rates for rents, and other economic, political, or regulatory matters affecting the real estate industry, including REITs. REITs and similar non-U.S. entities depend upon specialized management skills, may have limited financial resources, may have less trading volume in their securities, and may be subject to more abrupt or erratic price movements than the overall securities markets. REITs are also subject to the risk of failing to qualify for tax-free pass-through of income. Some REITs (especially mortgage REITs) are affected by risks similar to those associated with investments in debt securities including changes in interest rates and the quality of credit extended. Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within an economic sector, including the financial services sector. Companies in the same economic sector may be similarly affected by economic, regulatory, political or market events or conditions, making the Fund more vulnerable to unfavorable developments in that economic sector than funds that invest more broadly. The more a fund diversifies its investments, the more it spreads risk and potentially reduces the risks of loss and volatility. Because the Fund’s portfolio managers may invest significantly in the financial services sector, the Fund may be more susceptible to the particular risks of the financial services sector than if the Fund were invested in a wider variety of companies in unrelated industries. Small- and Mid-Cap Company Securities Risk. Investments in small- and mid-capitalization companies (small- and mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small- and mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small- and mid-cap companies may be less liquid and more volatile than the securities of larger companies. Value Securities Risk. Value securities are securities of companies that may have experienced, for example, adverse business, industry or other developments or may be subject to special risks that have caused the securities to be out of favor and, in turn, potentially undervalued. The market value of a portfolio security may not meet the portfolio manager's perceived value assessment of that security, or may decline in price, even though the portfolio manager(s) believe(s) the securities are already undervalued. There is also a risk that it may take longer than expected for the value of these investments to rise to the portfolio manager’s perceived value. In addition, value securities, at times, may not perform as well as growth securities or the stock market in general, and may be out of favor with investors for varying periods of time.
Risk Lose Money [Text]	rr_RiskLoseMoney	There is no assurance that the Fund will achieve its investment objective and you may lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance. The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (without applicable sales charges and adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities. The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	800.345.6611
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	columbiamanagement.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Year by Year Total Return (%) as of December 31 Each Year
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best and Worst Quarterly Returns During the Period Shown in the Bar Chart Best                              3rd Quarter 2009                            20.74% Worst                           4th Quarter 2008                            -27.98%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs).
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	The after-tax returns are shown only for Class A shares and will vary for other share classes.
Columbia Mid Cap Value Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	5.75%
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[1]
Management fees	rr_ManagementFeesOverAssets	0.66%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.29%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.20%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	690
3 years	rr_ExpenseExampleYear03	934
5 years	rr_ExpenseExampleYear05	1,197
10 years	rr_ExpenseExampleYear10	1,946
1 year	rr_ExpenseExampleNoRedemptionYear01	690
3 years	rr_ExpenseExampleNoRedemptionYear03	934
5 years	rr_ExpenseExampleNoRedemptionYear05	1,197
10 years	rr_ExpenseExampleNoRedemptionYear10	1,946
2003	rr_AnnualReturn2003	36.53%	[3]
2004	rr_AnnualReturn2004	20.64%	[3]
2005	rr_AnnualReturn2005	15.02%	[3]
2006	rr_AnnualReturn2006	16.74%	[3]
2007	rr_AnnualReturn2007	7.38%	[3]
2008	rr_AnnualReturn2008	(41.78%)	[3]
2009	rr_AnnualReturn2009	32.25%	[3]
2010	rr_AnnualReturn2010	22.93%	[3]
2011	rr_AnnualReturn2011	(4.28%)	[3]
2012	rr_AnnualReturn2012	16.49%	[3]
Year to Date Return, Label	rr_YearToDateReturnLabel	Year to Date return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	12.43%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Sep. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	20.74%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(27.98%)
1 Year	rr_AverageAnnualReturnYear01	9.80%
5 Years	rr_AverageAnnualReturnYear05	(0.10%)
10 Years	rr_AverageAnnualReturnYear10	8.97%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 20, 2001
Columbia Mid Cap Value Fund | Class B
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	5.00%	[4]
Management fees	rr_ManagementFeesOverAssets	0.66%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.29%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.95%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge decreases over time.
1 year	rr_ExpenseExampleYear01	698
3 years	rr_ExpenseExampleYear03	912
5 years	rr_ExpenseExampleYear05	1,252
10 years	rr_ExpenseExampleYear10	2,080
1 year	rr_ExpenseExampleNoRedemptionYear01	198
3 years	rr_ExpenseExampleNoRedemptionYear03	612
5 years	rr_ExpenseExampleNoRedemptionYear05	1,052
10 years	rr_ExpenseExampleNoRedemptionYear10	2,080
1 Year	rr_AverageAnnualReturnYear01	10.62%
5 Years	rr_AverageAnnualReturnYear05	(0.07%)
10 Years	rr_AverageAnnualReturnYear10	8.80%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 20, 2001
Columbia Mid Cap Value Fund | Class C
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[5]
Management fees	rr_ManagementFeesOverAssets	0.66%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.29%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.95%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge applies to redemptions within one year of purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	298
3 years	rr_ExpenseExampleYear03	612
5 years	rr_ExpenseExampleYear05	1,052
10 years	rr_ExpenseExampleYear10	2,275
1 year	rr_ExpenseExampleNoRedemptionYear01	198
3 years	rr_ExpenseExampleNoRedemptionYear03	612
5 years	rr_ExpenseExampleNoRedemptionYear05	1,052
10 years	rr_ExpenseExampleNoRedemptionYear10	2,275
1 Year	rr_AverageAnnualReturnYear01	14.64%
5 Years	rr_AverageAnnualReturnYear05	0.34%
10 Years	rr_AverageAnnualReturnYear10	8.81%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 20, 2001
Columbia Mid Cap Value Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.66%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.08%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.74%
1 year	rr_ExpenseExampleYear01	76
3 years	rr_ExpenseExampleYear03	237
5 years	rr_ExpenseExampleYear05	411
10 years	rr_ExpenseExampleYear10	918
1 year	rr_ExpenseExampleNoRedemptionYear01	76
3 years	rr_ExpenseExampleNoRedemptionYear03	237
5 years	rr_ExpenseExampleNoRedemptionYear05	411
10 years	rr_ExpenseExampleNoRedemptionYear10	918
1 Year	rr_AverageAnnualReturnYear01	17.09%
5 Years	rr_AverageAnnualReturnYear05	1.30%
10 Years	rr_AverageAnnualReturnYear10	9.74%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 27, 2010
Columbia Mid Cap Value Fund | Class K
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.66%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.38%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.04%
1 year	rr_ExpenseExampleYear01	106
3 years	rr_ExpenseExampleYear03	331
5 years	rr_ExpenseExampleYear05	574
10 years	rr_ExpenseExampleYear10	1,271
1 year	rr_ExpenseExampleNoRedemptionYear01	106
3 years	rr_ExpenseExampleNoRedemptionYear03	331
5 years	rr_ExpenseExampleNoRedemptionYear05	574
10 years	rr_ExpenseExampleNoRedemptionYear10	1,271
1 Year	rr_AverageAnnualReturnYear01	16.87%
5 Years	rr_AverageAnnualReturnYear05	1.16%
10 Years	rr_AverageAnnualReturnYear10	9.67%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 07, 2011
Columbia Mid Cap Value Fund | Class R
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.66%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.50%
Other expenses	rr_OtherExpensesOverAssets	0.29%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.45%
1 year	rr_ExpenseExampleYear01	148
3 years	rr_ExpenseExampleYear03	459
5 years	rr_ExpenseExampleYear05	792
10 years	rr_ExpenseExampleYear10	1,735
1 year	rr_ExpenseExampleNoRedemptionYear01	148
3 years	rr_ExpenseExampleNoRedemptionYear03	459
5 years	rr_ExpenseExampleNoRedemptionYear05	792
10 years	rr_ExpenseExampleNoRedemptionYear10	1,735
1 Year	rr_AverageAnnualReturnYear01	16.30%
5 Years	rr_AverageAnnualReturnYear05	0.84%
10 Years	rr_AverageAnnualReturnYear10	9.35%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 23, 2006
Columbia Mid Cap Value Fund | Class R4
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.66%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.29%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.95%
1 year	rr_ExpenseExampleYear01	97
3 years	rr_ExpenseExampleYear03	303
5 years	rr_ExpenseExampleYear05	525
10 years	rr_ExpenseExampleYear10	1,166
1 year	rr_ExpenseExampleNoRedemptionYear01	97
3 years	rr_ExpenseExampleNoRedemptionYear03	303
5 years	rr_ExpenseExampleNoRedemptionYear05	525
10 years	rr_ExpenseExampleNoRedemptionYear10	1,166
1 Year	rr_AverageAnnualReturnYear01	16.56%
5 Years	rr_AverageAnnualReturnYear05	1.10%
10 Years	rr_AverageAnnualReturnYear10	9.63%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia Mid Cap Value Fund | Class R5
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.66%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.13%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.79%
1 year	rr_ExpenseExampleYear01	81
3 years	rr_ExpenseExampleYear03	252
5 years	rr_ExpenseExampleYear05	439
10 years	rr_ExpenseExampleYear10	978
1 year	rr_ExpenseExampleNoRedemptionYear01	81
3 years	rr_ExpenseExampleNoRedemptionYear03	252
5 years	rr_ExpenseExampleNoRedemptionYear05	439
10 years	rr_ExpenseExampleNoRedemptionYear10	978
1 Year	rr_AverageAnnualReturnYear01	16.58%
5 Years	rr_AverageAnnualReturnYear05	1.10%
10 Years	rr_AverageAnnualReturnYear10	9.63%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia Mid Cap Value Fund | Class W
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.66%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.29%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.20%
1 year	rr_ExpenseExampleYear01	122
3 years	rr_ExpenseExampleYear03	381
5 years	rr_ExpenseExampleYear05	660
10 years	rr_ExpenseExampleYear10	1,455
1 year	rr_ExpenseExampleNoRedemptionYear01	122
3 years	rr_ExpenseExampleNoRedemptionYear03	381
5 years	rr_ExpenseExampleNoRedemptionYear05	660
10 years	rr_ExpenseExampleNoRedemptionYear10	1,455
1 Year	rr_AverageAnnualReturnYear01	16.47%
5 Years	rr_AverageAnnualReturnYear05	1.10%
10 Years	rr_AverageAnnualReturnYear10	9.63%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 27, 2010
Columbia Mid Cap Value Fund | Class Y
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.66%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.08%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.74%
1 year	rr_ExpenseExampleYear01	76
3 years	rr_ExpenseExampleYear03	237
5 years	rr_ExpenseExampleYear05	411
10 years	rr_ExpenseExampleYear10	918
1 year	rr_ExpenseExampleNoRedemptionYear01	76
3 years	rr_ExpenseExampleNoRedemptionYear03	237
5 years	rr_ExpenseExampleNoRedemptionYear05	411
10 years	rr_ExpenseExampleNoRedemptionYear10	918
1 Year	rr_AverageAnnualReturnYear01	16.98%
5 Years	rr_AverageAnnualReturnYear05	1.31%
10 Years	rr_AverageAnnualReturnYear10	9.75%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 15, 2009
Columbia Mid Cap Value Fund | Class Z
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.66%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.29%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.95%
1 year	rr_ExpenseExampleYear01	97
3 years	rr_ExpenseExampleYear03	303
5 years	rr_ExpenseExampleYear05	525
10 years	rr_ExpenseExampleYear10	1,166
1 year	rr_ExpenseExampleNoRedemptionYear01	97
3 years	rr_ExpenseExampleNoRedemptionYear03	303
5 years	rr_ExpenseExampleNoRedemptionYear05	525
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 1,166
1 Year	rr_AverageAnnualReturnYear01	16.84%
5 Years	rr_AverageAnnualReturnYear05	1.34%
10 Years	rr_AverageAnnualReturnYear10	9.90%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 20, 2001
Columbia Mid Cap Value Fund | returns after taxes on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	9.67%
5 Years	rr_AverageAnnualReturnYear05	(0.23%)
10 Years	rr_AverageAnnualReturnYear10	8.12%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 20, 2001
Columbia Mid Cap Value Fund | returns after taxes on distributions and sale of Fund shares | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	6.52%
5 Years	rr_AverageAnnualReturnYear05	(0.11%)
10 Years	rr_AverageAnnualReturnYear10	7.67%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 20, 2001
Columbia Mid Cap Value Fund | Russell Midcap Value Index (reflects no deductions for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	18.51%
5 Years	rr_AverageAnnualReturnYear05	3.79%
10 Years	rr_AverageAnnualReturnYear10	10.63%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] Other expenses for Class A, Class B, Class C, Class K, Class R, Class W, Class Y and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R4 and Class R5 are based on estimated amounts for the Fund's current fiscal year.

[3] Year to Date return as of March 31, 2013: 12.43%

[4] This charge decreases over time.

[5] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	COLUMBIA FUNDS SERIES TRUST
Prospectus Date	rr_ProspectusDate	Jul. 01, 2013
Columbia Marsico International Opportunities Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Summary of the Fund
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Columbia Marsico International Opportunities Fund (the Fund) seeks long-term growth of capital.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 19 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund may pay 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 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 73% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	73.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 19 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 50,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	other expenses for Class R4 are based on estimated amounts for the Fund’s current fiscal year.
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Management fees have been restated to reflect contractual changes to the investment management fee rates. Other expenses for Class A, Class B, Class C, Class R and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that: you invest $10,000 in the applicable class of Fund shares for the periods indicated, your investment has a 5% return each year, and the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Fund invests at least 65% of its total assets in common stocks of foreign companies. The Fund may invest in an unlimited number of companies of any size throughout the world that are selected for their long-term growth potential. The Fund normally invests in issuers from at least three different countries not including the United States. The Fund may invest in common stocks of companies operating in, or economically tied to, emerging market countries. Some issuers or securities in the Fund's portfolio may be based in, or economically tied to, the United States. The Fund also may invest in foreign currency exchange contracts to convert foreign currencies to and from the U.S. dollar, and to hedge against changes in foreign currency exchange rates. The core investments of the Fund (i.e., the primary investments held by the Fund over time) generally may include established companies and securities that are expected to offer long-term growth potential. However, the Fund's portfolio also may typically include securities of less mature companies, securities with more aggressive growth characteristics, and securities of companies undergoing significant positive developments, such as, without limitation, the introduction of a new product line, the appointment of a new management team, or an acquisition. The Fund’s investment strategy may involve the frequent trading of portfolio securities. This may cause the Fund to incur higher transaction costs (which may adversely affect the Fund’s performance) and may increase taxable distributions for shareholders.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down. Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money. Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund. Derivatives Risk/Forward Foreign Currency Contracts Risk. These instruments are a type of derivative contract whereby the Fund may agree to buy or sell a country’s or region’s currency at a specific price on a specific date in the future. These contracts may fall in value due to foreign market downswings or foreign currency value fluctuations. The Fund’s investment or hedging strategies may not achieve their objective. Investment in these instruments also subjects the Fund to counterparty risk. Emerging Market Securities Risk. Securities issued by foreign governments or companies in emerging market countries are more likely to have greater exposure to the risks of investing in foreign securities that are described in Foreign Securities Risk. In addition, emerging market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Their economies are usually less mature and their securities markets are typically less developed with more limited trading activity (i.e., lower trading volumes and less liquidity) than more developed countries. Emerging market securities tend to be more volatile than securities in more developed markets. Many emerging market countries are heavily dependent on international trade and have fewer trading partners, which makes them more sensitive to world commodity prices and economic downturns in other countries, and some have a higher risk of currency devaluations. Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar. Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies. Frequent Trading Risk.  The portfolio managers may actively and frequently trade investments in the Fund's portfolio to carry out its investment strategies. Frequent trading of investments increases the possibility that the Fund, as relevant, will realize taxable capital gains (including short-term capital gains, which are generally taxable to shareholders at higher rates than long-term capital gains for U.S. federal income tax purposes), which could reduce the Fund's after-tax return. Frequent trading can also mean higher brokerage and other transaction costs, which could reduce the Fund's return. The trading costs and tax effects associated with portfolio turnover may adversely affect the Fund’s performance. Geographic Concentration Risk/Europe Risk. The Fund may be particularly susceptible to economic, political, regulatory or other events or conditions affecting issuers and countries in Europe. Currency devaluations could occur in countries that have not yet experienced currency devaluation to date, or could continue to occur in countries that have already experienced such devaluations. In addition, the private and public sectors’ debt problems of a single EU country can pose significant economic risks to the EU as a whole. As a result, the Fund may be more volatile than a more geographically diversified fund. If securities of issuers in Europe fall out of favor, it may cause the Fund to underperform other funds that do not concentrate in this region of the world. Growth Securities Risk. Growth securities typically trade at a higher multiple of earnings than other types of equity securities. Accordingly, the market values of growth securities may be more sensitive to adverse economic or other circumstances or changes in current or expected earnings than the market values of other types of securities. In addition, growth securities, at times, may not perform as well as value securities or the stock market in general, and may be out of favor with investors for varying periods of time. Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors. Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities. Small- and Mid-Cap Company Securities Risk. Investments in small- and mid-capitalization companies (small- and mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small- and mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small- and mid-cap companies may be less liquid and more volatile than the securities of larger companies.
Risk Lose Money [Text]	rr_RiskLoseMoney	There is no assurance that the Fund will achieve its investment objective and you may lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance. The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (without applicable sales charges and adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities. The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	800.345.6611
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	columbiamanagement.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Year by Year Total Return (%) as of December 31 Each Year
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best and Worst Quarterly Returns During the Period Shown in the Bar Chart Best                              2nd Quarter 2009                            26.57% Worst                           4th Quarter 2008                            -27.68%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs).
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	The after-tax returns are shown only for Class A shares and will vary for other share classes.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares.
Columbia Marsico International Opportunities Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	5.75%
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[1]
Management fees	rr_ManagementFeesOverAssets	0.79%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.33%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.37%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, charged as follows: 1.00% CDSC if redeemed within 12 months of purchase, and 0.50% CDSC if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	706
3 years	rr_ExpenseExampleYear03	984
5 years	rr_ExpenseExampleYear05	1,282
10 years	rr_ExpenseExampleYear10	2,127
1 year	rr_ExpenseExampleNoRedemptionYear01	706
3 years	rr_ExpenseExampleNoRedemptionYear03	984
5 years	rr_ExpenseExampleNoRedemptionYear05	1,282
10 years	rr_ExpenseExampleNoRedemptionYear10	2,127
2003	rr_AnnualReturn2003	40.24%	[4]
2004	rr_AnnualReturn2004	16.76%	[4]
2005	rr_AnnualReturn2005	19.74%	[4]
2006	rr_AnnualReturn2006	23.34%	[4]
2007	rr_AnnualReturn2007	19.99%	[4]
2008	rr_AnnualReturn2008	(50.78%)	[4]
2009	rr_AnnualReturn2009	37.98%	[4]
2010	rr_AnnualReturn2010	13.74%	[4]
2011	rr_AnnualReturn2011	(15.93%)	[4]
2012	rr_AnnualReturn2012	17.84%	[4]
Year to Date Return, Label	rr_YearToDateReturnLabel	Year to Date return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	4.70%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	26.57%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(27.68%)
1 Year	rr_AverageAnnualReturnYear01	11.02%
5 Years	rr_AverageAnnualReturnYear05	(6.33%)
10 Years	rr_AverageAnnualReturnYear10	7.66%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 01, 2000
Columbia Marsico International Opportunities Fund | Class B
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	5.00%	[5]
Management fees	rr_ManagementFeesOverAssets	0.79%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.33%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	2.12%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge decreases over time.
1 year	rr_ExpenseExampleYear01	715
3 years	rr_ExpenseExampleYear03	964
5 years	rr_ExpenseExampleYear05	1,339
10 years	rr_ExpenseExampleYear10	2,261
1 year	rr_ExpenseExampleNoRedemptionYear01	215
3 years	rr_ExpenseExampleNoRedemptionYear03	664
5 years	rr_ExpenseExampleNoRedemptionYear05	1,139
10 years	rr_ExpenseExampleNoRedemptionYear10	2,261
1 Year	rr_AverageAnnualReturnYear01	12.01%
5 Years	rr_AverageAnnualReturnYear05	(6.30%)
10 Years	rr_AverageAnnualReturnYear10	7.49%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 01, 2000
Columbia Marsico International Opportunities Fund | Class C
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[6]
Management fees	rr_ManagementFeesOverAssets	0.79%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.33%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	2.12%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge applies to redemptions within one year of purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	315
3 years	rr_ExpenseExampleYear03	664
5 years	rr_ExpenseExampleYear05	1,139
10 years	rr_ExpenseExampleYear10	2,452
1 year	rr_ExpenseExampleNoRedemptionYear01	215
3 years	rr_ExpenseExampleNoRedemptionYear03	664
5 years	rr_ExpenseExampleNoRedemptionYear05	1,139
10 years	rr_ExpenseExampleNoRedemptionYear10	2,452
1 Year	rr_AverageAnnualReturnYear01	15.88%
5 Years	rr_AverageAnnualReturnYear05	(5.94%)
10 Years	rr_AverageAnnualReturnYear10	7.49%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 01, 2000
Columbia Marsico International Opportunities Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.79%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.14%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.93%
1 year	rr_ExpenseExampleYear01	95
3 years	rr_ExpenseExampleYear03	296
5 years	rr_ExpenseExampleYear05	515
10 years	rr_ExpenseExampleYear10	1,143
1 year	rr_ExpenseExampleNoRedemptionYear01	95
3 years	rr_ExpenseExampleNoRedemptionYear03	296
5 years	rr_ExpenseExampleNoRedemptionYear05	515
10 years	rr_ExpenseExampleNoRedemptionYear10	1,143
1 Year	rr_AverageAnnualReturnYear01	18.41%
5 Years	rr_AverageAnnualReturnYear05	(4.92%)
10 Years	rr_AverageAnnualReturnYear10	8.47%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 27, 2010
Columbia Marsico International Opportunities Fund | Class R
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.79%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.50%
Other expenses	rr_OtherExpensesOverAssets	0.33%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.62%
1 year	rr_ExpenseExampleYear01	165
3 years	rr_ExpenseExampleYear03	511
5 years	rr_ExpenseExampleYear05	881
10 years	rr_ExpenseExampleYear10	1,922
1 year	rr_ExpenseExampleNoRedemptionYear01	165
3 years	rr_ExpenseExampleNoRedemptionYear03	511
5 years	rr_ExpenseExampleNoRedemptionYear05	881
10 years	rr_ExpenseExampleNoRedemptionYear10	1,922
1 Year	rr_AverageAnnualReturnYear01	17.51%
5 Years	rr_AverageAnnualReturnYear05	(5.46%)
10 Years	rr_AverageAnnualReturnYear10	8.03%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 23, 2006
Columbia Marsico International Opportunities Fund | Class R4
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.79%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.33%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.12%
1 year	rr_ExpenseExampleYear01	114
3 years	rr_ExpenseExampleYear03	356
5 years	rr_ExpenseExampleYear05	617
10 years	rr_ExpenseExampleYear10	1,363
1 year	rr_ExpenseExampleNoRedemptionYear01	114
3 years	rr_ExpenseExampleNoRedemptionYear03	356
5 years	rr_ExpenseExampleNoRedemptionYear05	617
10 years	rr_ExpenseExampleNoRedemptionYear10	1,363
1 Year	rr_AverageAnnualReturnYear01	17.94%
5 Years	rr_AverageAnnualReturnYear05	(5.20%)
10 Years	rr_AverageAnnualReturnYear10	8.31%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia Marsico International Opportunities Fund | Class Z
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.79%	[2]
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.33%	[3]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.12%
1 year	rr_ExpenseExampleYear01	114
3 years	rr_ExpenseExampleYear03	356
5 years	rr_ExpenseExampleYear05	617
10 years	rr_ExpenseExampleYear10	1,363
1 year	rr_ExpenseExampleNoRedemptionYear01	114
3 years	rr_ExpenseExampleNoRedemptionYear03	356
5 years	rr_ExpenseExampleNoRedemptionYear05	617
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 1,363
1 Year	rr_AverageAnnualReturnYear01	18.14%
5 Years	rr_AverageAnnualReturnYear05	(4.99%)
10 Years	rr_AverageAnnualReturnYear10	8.56%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 01, 2000
Columbia Marsico International Opportunities Fund | returns after taxes on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	11.02%
5 Years	rr_AverageAnnualReturnYear05	(6.49%)
10 Years	rr_AverageAnnualReturnYear10	6.97%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 01, 2000
Columbia Marsico International Opportunities Fund | returns after taxes on distributions and sale of Fund shares | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	7.16%
5 Years	rr_AverageAnnualReturnYear05	(5.30%)
10 Years	rr_AverageAnnualReturnYear10	6.61%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 01, 2000
Columbia Marsico International Opportunities Fund | MSCI EAFE Index (Net) (reflects reinvested dividends net of withholding taxes but reflects no deductions for fees, expenses or other taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	17.32%
5 Years	rr_AverageAnnualReturnYear05	(3.69%)
10 Years	rr_AverageAnnualReturnYear10	8.21%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, charged as follows: 1.00% CDSC if redeemed within 12 months of purchase, and 0.50% CDSC if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] Management fees have been restated to reflect contractual changes to the investment management fee rates.

[3] Other expenses for Class A, Class B, Class C, Class R and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R4 are based on estimated amounts for the Fund's current fiscal year.

[4] Year to Date return as of March 31, 2013: 4.70%

[5] This charge decreases over time.

[6] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

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Columbia Marsico Growth Fund

Summary of the Fund

Investment Objective

Columbia Marsico Growth Fund (the Fund) seeks long-term growth of capital.

Fees and Expenses of the Fund

This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 18 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees Columbia Marsico Growth Fund	Class A		Class B		Class C		Class I	Class R	Class R4	Class R5	Class W	Class Z
Maximum sales charge (load) imposed on purchases (as a % of offering price)	5.75%		none		none		none	none	none	none	none	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	1.00%	[1]	5.00%	[2]	1.00%	[3]	none	none	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Columbia Marsico Growth Fund		Class A	Class B	Class C	Class I	Class R	Class R4	Class R5	Class W	Class Z
Management fees	[1]	0.62%	0.62%	0.62%	0.62%	0.62%	0.62%	0.62%	0.62%	0.62%
Distribution and/or service (12b-1) fees		0.25%	1.00%	1.00%	none	0.50%	none	none	0.25%	none
Other expenses	[2]	0.31%	0.31%	0.31%	0.09%	0.31%	0.31%	0.14%	0.31%	0.31%
Total annual Fund operating expenses		1.18%	1.93%	1.93%	0.71%	1.43%	0.93%	0.76%	1.18%	0.93%

Example

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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that:

• you invest $10,000 in the applicable class of Fund shares for the periods indicated,

• your investment has a 5% return each year, and

• the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above.

Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:

Expense Example Columbia Marsico Growth Fund (USD $)	1 year	3 years	5 years	10 years
Class A	688	928	1,187	1,924
Class B	696	906	1,242	2,059
Class C	296	606	1,042	2,254
Class I	73	227	395	883
Class R	146	452	782	1,713
Class R4	95	296	515	1,143
Class R5	78	243	422	942
Class W	120	375	649	1,432
Class Z	95	296	515	1,143

Expense Example, No Redemption Columbia Marsico Growth Fund (USD $)	1 year	3 years	5 years	10 years
Class A	688	928	1,187	1,924
Class B	196	606	1,042	2,059
Class C	196	606	1,042	2,254
Class I	73	227	395	883
Class R	146	452	782	1,713
Class R4	95	296	515	1,143
Class R5	78	243	422	942
Class W	120	375	649	1,432
Class Z	95	296	515	1,143

Portfolio Turnover

The Fund may pay 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 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 90% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund invests primarily in equity securities of large-capitalization companies that have market capitalizations of $5 billion or more at the time of purchase. The Fund generally holds a core position of between 35 and 50 common stocks. The number of securities held by the Fund occasionally may exceed this range, such as when the Fund is accumulating new positions, phasing out and replacing existing positions, or responding to exceptional market conditions. The Fund may invest up to 25% in foreign securities, including in emerging market securities.

The core investments of the Fund (i.e., the primary investments held by the Fund over time) generally may include established companies and securities that are expected to offer long-term growth potential. However, the Fund's portfolio also may typically include securities of less mature companies, securities with more aggressive growth characteristics, and securities of companies undergoing significant positive developments, such as, without limitation, the introduction of a new product line, the appointment of a new management team, or an acquisition.

Principal Risks

An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down.

Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money.

Emerging Market Securities Risk. Securities issued by foreign governments or companies in emerging market countries are more likely to have greater exposure to the risks of investing in foreign securities that are described in Foreign Securities Risk. In addition, emerging market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Their economies are usually less mature and their securities markets are typically less developed with more limited trading activity (i.e., lower trading volumes and less liquidity) than more developed countries. Emerging market securities tend to be more volatile than securities in more developed markets. Many emerging market countries are heavily dependent on international trade and have fewer trading partners, which makes them more sensitive to world commodity prices and economic downturns in other countries, and some have a higher risk of currency devaluations.

Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar.

Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies.

Growth Securities Risk. Growth securities typically trade at a higher multiple of earnings than other types of equity securities. Accordingly, the market values of growth securities may be more sensitive to adverse economic or other circumstances or changes in current or expected earnings than the market values of other types of securities. In addition, growth securities, at times, may not perform as well as value securities or the stock market in general, and may be out of favor with investors for varying periods of time.

Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors.

Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities.

Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within an economic sector. Companies in the same economic sector may be similarly affected by economic, regulatory, political or market events or conditions, making the Fund more vulnerable to unfavorable developments in that economic  sector than funds that invest more broadly. The more a fund diversifies its investments, the more it spreads risk and potentially reduces the risks of loss and volatility.

Small- and Mid-Cap Company Securities Risk. Investments in small- and mid-capitalization companies (small- and mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small- and mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small- and mid-cap companies may be less liquid and more volatile than the securities of larger companies.

Performance Information

The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.

The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (without applicable sales charges and adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities.

The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public.

The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.

Year by Year Total Return (%)
as of December 31 Each Year

Best and Worst Quarterly Returns
During the Period Shown in the Bar Chart

Best                              3rd Quarter 2009                            15.92%


Worst                          4th Quarter 2008                            -22.85%

Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)

Average Annual Total Returns Columbia Marsico Growth Fund	Share Class Inception Date	1 Year	5 Years	10 Years
Class A shares	Dec. 31, 1997	5.83%	(1.46%)	5.93%
Class A shares returns after taxes on distributions	Dec. 31, 1997	5.78%	(1.49%)	5.91%
Class A shares returns after taxes on distributions and sale of Fund shares	Dec. 31, 1997	3.85%	(1.24%)	5.21%
Class B shares	Dec. 31, 1997	6.38%	(1.43%)	5.75%
Class C shares	Dec. 31, 1997	10.42%	(1.03%)	5.76%
Class I shares	Sep. 27, 2010	12.70%	(0.06%)	6.67%
Class R shares	Jan. 23, 2006	11.95%	(0.54%)	6.27%
Class R4 shares	Nov. 08, 2012	12.29%	(0.29%)	6.55%
Class R5 shares	Nov. 08, 2012	12.31%	(0.28%)	6.56%
Class W shares	Sep. 27, 2010	12.26%	(0.28%)	6.56%
Class Z shares	Dec. 31, 1997	12.48%	(0.04%)	6.82%
S&P 500 Index (reflects no deductions for fees, expenses or taxes)		16.00%	1.66%	7.10%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] This charge decreases over time.

[3] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

[1] Management fees have been restated to reflect contractual changes to the investment management fee rates.

[2] Other expenses for Class A, Class B, Class C, Class I, Class R, Class W and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R4 and Class R5 are based on estimated amounts for the Fund's current fiscal year.

[1] Year to Date return as of March 31, 2013: 10.51%

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Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	COLUMBIA FUNDS SERIES TRUST
Prospectus Date	rr_ProspectusDate	Jul. 01, 2013
Columbia Multi-Advisor International Equity Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Summary of the Fund
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Columbia Multi-Advisor International Equity Fund (the Fund) seeks long-term capital growth.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 22 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund may pay 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 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 100% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	100.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 22 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 50,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	other expenses for Class R4 and Class R5 are based on estimated amounts for the Fund’s current fiscal year.
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Other expenses for Class A, Class B, Class C, Class K, Class R, Class W, Class Y and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that: you invest $10,000 in the applicable class of Fund shares for the periods indicated, your investment has a 5% return each year, and the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in equity securities (including common stock, preferred stock, and depositary receipts) of established companies located in at least three countries other than the United States, including emerging market countries. The Fund invests in companies that are believed to have the potential for growth or to be undervalued. The Fund may also invest in derivatives, including futures, forward foreign currency contracts, other types of forwards and other derivative instruments. The Fund may invest in derivatives for both hedging and non-hedging purposes, including, for example, to seek to enhance returns or as a substitute for a position in an underlying asset. The Fund may invest in derivatives to manage the Fund’s overall risk exposure. In addition, under normal circumstances, the Fund uses forward foreign currency contracts in seeking to enhance returns based on fluctuations in the values of various foreign currencies relative to the U.S. dollar (the Currency Overlay Strategy). The Fund gains economic exposure to foreign currencies, through its investment in forward foreign currency contracts, comparable to the exposure that it would have had if it had bought or sold the foreign currencies directly. The Fund may invest in companies involved in initial public offerings, tender offers, mergers and other corporate restructuring. Columbia Management Investment Advisers, LLC (Columbia Management or the Investment Manager) serves as the investment manager for the Fund and will attempt to achieve the Fund’s objective by managing a portion of the Fund’s assets (the Columbia Management sleeve) and selecting one or more subadvisers to manage other sleeves independently of each other and Columbia Management. The Fund’s subadviser is Threadneedle International Limited (Threadneedle), an affiliate of the Investment Manager. The subadviser and Columbia Management use their own methodology for selecting investments. Each sleeve manager’s investment strategy may involve the frequent trading of portfolio securities, which may increase brokerage and other transaction costs and have adverse tax consequences.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down. Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money. Depositary Receipts Risks. Depositary receipts are receipts issued by a bank or trust company and evidence of ownership of underlying securities issued by foreign companies. Some foreign securities are traded in the form of American Depositary Receipts (ADRs). Depositary receipts involve the risks of other investments in foreign securities, including 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. In addition, ADR holders may not have all the legal rights of shareholders and may experience difficulty in receiving shareholder communications. Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small price movement in the underlying security(ies), instrument, commodity, currency or index may result in a substantial loss for the Fund. In addition to the potential for increased losses, the use of derivative instruments may lead to increased volatility within the Fund. Derivatives will typically increase the Fund’s exposure to principal risks to which it is otherwise exposed, and may expose the Fund to additional risks, including correlation risk, counterparty risk, hedging risk, leverage risk and liquidity risk. Below is more detailed information on certain derivatives expected to be utilized by the Fund. Derivatives Risk/Forward Foreign Currency Contracts Risk. These instruments are a type of derivative contract whereby the Fund may agree to buy or sell a country’s or region’s currency at a specific price on a specific date in the future. These contracts may fall in value due to foreign market downswings or foreign currency value fluctuations. The Fund’s investment or hedging strategies may not achieve their objective. Investment in these instruments also subjects the Fund to counterparty risk. Derivatives Risk/Futures Contracts Risk. The loss that may be incurred in entering into futures contracts may exceed the amount of the premium paid and may be potentially unlimited. Futures markets are highly volatile and the use of futures may increase the volatility of the Fund’s net asset value (NAV). Additionally, as a result of the low collateral deposits normally involved in futures trading, a relatively small price movement in a futures contract may result in substantial losses to the Fund. Futures contracts may be illiquid. Furthermore, exchanges may limit fluctuations in futures contract prices during a trading session by imposing a maximum permissible price movement on each futures contract. The Fund may be disadvantaged if it is prohibited from executing a trade outside the daily permissible price movement. Futures contracts executed on foreign exchanges may not provide the same protection as U.S. exchanges. These transactions involve additional risks, including counterparty risk, hedging risk and pricing risk. Emerging Market Securities Risk. Securities issued by foreign governments or companies in emerging market countries are more likely to have greater exposure to the risks of investing in foreign securities that are described in Foreign Securities Risk. In addition, emerging market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Their economies are usually less mature and their securities markets are typically less developed with more limited trading activity (i.e., lower trading volumes and less liquidity) than more developed countries. Emerging market securities tend to be more volatile than securities in more developed markets. Many emerging market countries are heavily dependent on international trade and have fewer trading partners, which makes them more sensitive to world commodity prices and economic downturns in other countries, and some have a higher risk of currency devaluations. Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar. Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies. Frequent Trading Risk.  The portfolio managers may actively and frequently trade investments in the Fund's portfolio to carry out its investment strategies. Frequent trading of investments increases the possibility that the Fund, as relevant, will realize taxable capital gains (including short-term capital gains, which are generally taxable to shareholders at higher rates than long-term capital gains for U.S. federal income tax purposes), which could reduce the Fund's after-tax return. Frequent trading can also mean higher brokerage and other transaction costs, which could reduce the Fund's return. The trading costs and tax effects associated with portfolio turnover may adversely affect the Fund’s performance. Geographic Concentration Risk. The Fund may be particularly susceptible to economic, political, regulatory or other events or conditions affecting issuers and countries within the specific geographic regions in which the Fund invests. The Fund’s net asset value may be more volatile than a more geographically diversified fund. Growth Securities Risk. Growth securities typically trade at a higher multiple of earnings than other types of equity securities. Accordingly, the market values of growth securities may be more sensitive to adverse economic or other circumstances or changes in current or expected earnings than the market values of other types of securities. In addition, growth securities, at times, may not perform as well as value securities or the stock market in general, and may be out of favor with investors for varying periods of time. Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors. Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities. Multi-Adviser Risk. The Fund has multiple subadvisers. Each subadviser makes investment decisions independently from the other subadviser(s). It is possible that the security selection process of one subadviser will not complement or may conflict or even contradict that of the other subadviser(s), including making off-setting trades that have no net effect to the Fund, but which may increase Fund expenses. As a result, the Fund's exposure to a given security, industry, sector or market capitalization could be smaller or larger than if the Fund were managed by a single subadviser, which could affect the Fund's performance. Pacific/Asia Region Risk. Many of the countries in the Pacific/Asia region are considered underdeveloped or developing, including from a political, economic and/or social perspective, and may have relatively unstable governments and economies based on limited business, industries and/or natural resources or commodities. Events in any one country within the region may impact other countries in the region or the region as a whole. As a result, events in the region will generally have a greater effect on the Fund than if the Fund were more geographically diversified. This could result in increased volatility and losses within the Fund. Quantitative Model Risk. Investments 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. Small Company Securities Risk. Investments in small-capitalization companies (small-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small-cap companies may be less liquid and more volatile than the securities of larger companies. Special Situations Risk. Securities of companies that are involved in an initial public offering or a major corporate event, such as a business consolidation or restructuring, may present special risk because of the high degree of uncertainty that can be associated with such events. Securities issued in initial public offerings often are issued by companies that are in the early stages of development, have a history of little or no revenues and may operate at a loss following the offering. It is possible that there will be no active trading market for the securities after the offering, and that the market price of the securities may be subject to significant and unpredictable fluctuations. Investing in special situations may have a magnified effect on the performance of funds with small amounts of assets. Value Securities Risk. Value securities are securities of companies that may have experienced, for example, adverse business, industry or other developments or may be subject to special risks that have caused the securities to be out of favor and, in turn, potentially undervalued. The market value of a portfolio security may not meet the portfolio manager's perceived value assessment of that security, or may decline in price, even though the portfolio manager(s) believe(s) the securities are already undervalued. There is also a risk that it may take longer than expected for the value of these investments to rise to the portfolio manager’s perceived value. In addition, value securities, at times, may not perform as well as growth securities or the stock market in general, and may be out of favor with investors for varying periods of time.
Risk Lose Money [Text]	rr_RiskLoseMoney	There is no assurance that the Fund will achieve its investment objective and you may lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance. The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (without applicable sales charges and adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities. The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	800.345.6611
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	columbiamanagement.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Year by Year Total Return (%) as of December 31 Each Year
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best and Worst Quarterly Returns During the Period Shown in the Bar Chart Best                              2nd Quarter 2009                            25.94% Worst                           4th Quarter 2008                            -24.41%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs).
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	The after-tax returns are shown only for Class A shares and will vary for other share classes.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	Returns after taxes on distributions and sale of Fund shares are higher than before-tax returns for certain periods shown because they reflect the tax benefit of capital losses realized on the redemption of Fund shares.
Columbia Multi-Advisor International Equity Fund | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	5.75%
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[1]
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.38%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.39%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, charged as follows: 1.00% CDSC if redeemed within 12 months of purchase, and 0.50% CDSC if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	708
3 years	rr_ExpenseExampleYear03	990
5 years	rr_ExpenseExampleYear05	1,292
10 years	rr_ExpenseExampleYear10	2,148
1 year	rr_ExpenseExampleNoRedemptionYear01	708
3 years	rr_ExpenseExampleNoRedemptionYear03	990
5 years	rr_ExpenseExampleNoRedemptionYear05	1,292
10 years	rr_ExpenseExampleNoRedemptionYear10	2,148
2003	rr_AnnualReturn2003	34.08%	[3]
2004	rr_AnnualReturn2004	17.62%	[3]
2005	rr_AnnualReturn2005	13.82%	[3]
2006	rr_AnnualReturn2006	24.95%	[3]
2007	rr_AnnualReturn2007	14.21%	[3]
2008	rr_AnnualReturn2008	(47.04%)	[3]
2009	rr_AnnualReturn2009	31.13%	[3]
2010	rr_AnnualReturn2010	8.70%	[3]
2011	rr_AnnualReturn2011	(13.39%)	[3]
2012	rr_AnnualReturn2012	17.91%	[3]
Year to Date Return, Label	rr_YearToDateReturnLabel	Year to Date return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	3.03%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	25.94%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(24.41%)
1 Year	rr_AverageAnnualReturnYear01	11.08%
5 Years	rr_AverageAnnualReturnYear05	(6.19%)
10 Years	rr_AverageAnnualReturnYear10	6.40%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 03, 1992
Columbia Multi-Advisor International Equity Fund | Class B
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	5.00%	[4]
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.38%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	2.14%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge decreases over time.
1 year	rr_ExpenseExampleYear01	717
3 years	rr_ExpenseExampleYear03	970
5 years	rr_ExpenseExampleYear05	1,349
10 years	rr_ExpenseExampleYear10	2,282
1 year	rr_ExpenseExampleNoRedemptionYear01	217
3 years	rr_ExpenseExampleNoRedemptionYear03	670
5 years	rr_ExpenseExampleNoRedemptionYear05	1,149
10 years	rr_ExpenseExampleNoRedemptionYear10	2,282
1 Year	rr_AverageAnnualReturnYear01	12.08%
5 Years	rr_AverageAnnualReturnYear05	(6.14%)
10 Years	rr_AverageAnnualReturnYear10	6.24%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 07, 1993
Columbia Multi-Advisor International Equity Fund | Class C
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[5]
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.38%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	2.14%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge applies to redemptions within one year of purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	317
3 years	rr_ExpenseExampleYear03	670
5 years	rr_ExpenseExampleYear05	1,149
10 years	rr_ExpenseExampleYear10	2,472
1 year	rr_ExpenseExampleNoRedemptionYear01	217
3 years	rr_ExpenseExampleNoRedemptionYear03	670
5 years	rr_ExpenseExampleNoRedemptionYear05	1,149
10 years	rr_ExpenseExampleNoRedemptionYear10	2,472
1 Year	rr_AverageAnnualReturnYear01	16.06%
5 Years	rr_AverageAnnualReturnYear05	(5.80%)
10 Years	rr_AverageAnnualReturnYear10	6.39%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 17, 1992
Columbia Multi-Advisor International Equity Fund | Class I
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.18%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.94%
1 year	rr_ExpenseExampleYear01	96
3 years	rr_ExpenseExampleYear03	300
5 years	rr_ExpenseExampleYear05	520
10 years	rr_ExpenseExampleYear10	1,155
1 year	rr_ExpenseExampleNoRedemptionYear01	96
3 years	rr_ExpenseExampleNoRedemptionYear03	300
5 years	rr_ExpenseExampleNoRedemptionYear05	520
10 years	rr_ExpenseExampleNoRedemptionYear10	1,155
1 Year	rr_AverageAnnualReturnYear01	18.53%
5 Years	rr_AverageAnnualReturnYear05	(4.74%)
10 Years	rr_AverageAnnualReturnYear10	7.36%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 27, 2010
Columbia Multi-Advisor International Equity Fund | Class K
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.48%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.24%
1 year	rr_ExpenseExampleYear01	126
3 years	rr_ExpenseExampleYear03	393
5 years	rr_ExpenseExampleYear05	681
10 years	rr_ExpenseExampleYear10	1,500
1 year	rr_ExpenseExampleNoRedemptionYear01	126
3 years	rr_ExpenseExampleNoRedemptionYear03	393
5 years	rr_ExpenseExampleNoRedemptionYear05	681
10 years	rr_ExpenseExampleNoRedemptionYear10	1,500
1 Year	rr_AverageAnnualReturnYear01	18.11%
5 Years	rr_AverageAnnualReturnYear05	(4.95%)
10 Years	rr_AverageAnnualReturnYear10	7.19%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 07, 2011
Columbia Multi-Advisor International Equity Fund | Class R
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.50%
Other expenses	rr_OtherExpensesOverAssets	0.38%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.64%
1 year	rr_ExpenseExampleYear01	167
3 years	rr_ExpenseExampleYear03	517
5 years	rr_ExpenseExampleYear05	892
10 years	rr_ExpenseExampleYear10	1,944
1 year	rr_ExpenseExampleNoRedemptionYear01	167
3 years	rr_ExpenseExampleNoRedemptionYear03	517
5 years	rr_ExpenseExampleNoRedemptionYear05	892
10 years	rr_ExpenseExampleNoRedemptionYear10	1,944
1 Year	rr_AverageAnnualReturnYear01	17.61%
5 Years	rr_AverageAnnualReturnYear05	(5.32%)
10 Years	rr_AverageAnnualReturnYear10	6.77%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 23, 2006
Columbia Multi-Advisor International Equity Fund | Class R4
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.38%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.14%
1 year	rr_ExpenseExampleYear01	116
3 years	rr_ExpenseExampleYear03	362
5 years	rr_ExpenseExampleYear05	628
10 years	rr_ExpenseExampleYear10	1,386
1 year	rr_ExpenseExampleNoRedemptionYear01	116
3 years	rr_ExpenseExampleNoRedemptionYear03	362
5 years	rr_ExpenseExampleNoRedemptionYear05	628
10 years	rr_ExpenseExampleNoRedemptionYear10	1,386
1 Year	rr_AverageAnnualReturnYear01	18.31%
5 Years	rr_AverageAnnualReturnYear05	(4.83%)
10 Years	rr_AverageAnnualReturnYear10	7.31%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia Multi-Advisor International Equity Fund | Class R5
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.23%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.99%
1 year	rr_ExpenseExampleYear01	101
3 years	rr_ExpenseExampleYear03	315
5 years	rr_ExpenseExampleYear05	547
10 years	rr_ExpenseExampleYear10	1,213
1 year	rr_ExpenseExampleNoRedemptionYear01	101
3 years	rr_ExpenseExampleNoRedemptionYear03	315
5 years	rr_ExpenseExampleNoRedemptionYear05	547
10 years	rr_ExpenseExampleNoRedemptionYear10	1,213
1 Year	rr_AverageAnnualReturnYear01	18.35%
5 Years	rr_AverageAnnualReturnYear05	(4.82%)
10 Years	rr_AverageAnnualReturnYear10	7.31%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia Multi-Advisor International Equity Fund | Class W
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.38%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.39%
1 year	rr_ExpenseExampleYear01	142
3 years	rr_ExpenseExampleYear03	440
5 years	rr_ExpenseExampleYear05	761
10 years	rr_ExpenseExampleYear10	1,669
1 year	rr_ExpenseExampleNoRedemptionYear01	142
3 years	rr_ExpenseExampleNoRedemptionYear03	440
5 years	rr_ExpenseExampleNoRedemptionYear05	761
10 years	rr_ExpenseExampleNoRedemptionYear10	1,669
1 Year	rr_AverageAnnualReturnYear01	18.01%
5 Years	rr_AverageAnnualReturnYear05	(5.05%)
10 Years	rr_AverageAnnualReturnYear10	7.07%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 27, 2010
Columbia Multi-Advisor International Equity Fund | Class Y
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.18%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.94%
1 year	rr_ExpenseExampleYear01	96
3 years	rr_ExpenseExampleYear03	300
5 years	rr_ExpenseExampleYear05	520
10 years	rr_ExpenseExampleYear10	1,155
1 year	rr_ExpenseExampleNoRedemptionYear01	96
3 years	rr_ExpenseExampleNoRedemptionYear03	300
5 years	rr_ExpenseExampleNoRedemptionYear05	520
10 years	rr_ExpenseExampleNoRedemptionYear10	1,155
1 Year	rr_AverageAnnualReturnYear01	18.44%
5 Years	rr_AverageAnnualReturnYear05	(4.77%)
10 Years	rr_AverageAnnualReturnYear10	7.34%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 07, 2011
Columbia Multi-Advisor International Equity Fund | Class Z
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.76%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.38%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.14%
1 year	rr_ExpenseExampleYear01	116
3 years	rr_ExpenseExampleYear03	362
5 years	rr_ExpenseExampleYear05	628
10 years	rr_ExpenseExampleYear10	1,386
1 year	rr_ExpenseExampleNoRedemptionYear01	116
3 years	rr_ExpenseExampleNoRedemptionYear03	362
5 years	rr_ExpenseExampleNoRedemptionYear05	628
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 1,386
1 Year	rr_AverageAnnualReturnYear01	18.28%
5 Years	rr_AverageAnnualReturnYear05	(4.84%)
10 Years	rr_AverageAnnualReturnYear10	7.31%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 02, 1991
Columbia Multi-Advisor International Equity Fund | returns after taxes on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	10.44%
5 Years	rr_AverageAnnualReturnYear05	(6.55%)
10 Years	rr_AverageAnnualReturnYear10	5.72%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 03, 1992
Columbia Multi-Advisor International Equity Fund | returns after taxes on distributions and sale of Fund shares | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	7.81%
5 Years	rr_AverageAnnualReturnYear05	(5.21%)
10 Years	rr_AverageAnnualReturnYear10	5.54%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 03, 1992
Columbia Multi-Advisor International Equity Fund | MSCI EAFE Index (Net) (reflects reinvested dividends net of withholding taxes but reflects no deductions for fees, expenses, or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	17.32%
5 Years	rr_AverageAnnualReturnYear05	(3.69%)
10 Years	rr_AverageAnnualReturnYear10	8.21%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, charged as follows: 1.00% CDSC if redeemed within 12 months of purchase, and 0.50% CDSC if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] Other expenses for Class A, Class B, Class C, Class K, Class R, Class W, Class Y and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R4 and Class R5 are based on estimated amounts for the Fund's current fiscal year.

[3] Year to Date return as of March 31, 2013: 3.03%

[4] This charge decreases over time.

[5] This charge applies to redemptions within one year of purchase, with certain limited exceptions.

XML

Document and Entity Information	12 Months Ended
	Jul. 01, 2013
Risk/Return:
Document Type	485BPOS
Document Period End Date	Feb. 28, 2013
Registrant Name	COLUMBIA FUNDS SERIES TRUST
Central Index Key	0001097519
Amendment Flag	false
Document Creation Date	Jun. 27, 2013
Document Effective Date	Jul. 01, 2013
Prospectus Date	Jul. 01, 2013

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	COLUMBIA FUNDS SERIES TRUST
Prospectus Date	rr_ProspectusDate	Jul. 01, 2013
Columbia Small Cap Value Fund II
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Summary of the Fund
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Columbia Small Cap Value Fund II (the Fund) seeks long-term capital appreciation.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This 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 if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 19 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund may pay 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 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 42% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	42.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you and an immediate family member invest, or agree to invest in the future, at least $50,000 in certain classes of shares of eligible funds distributed by Columbia Management Investment Distributors, Inc. More information about these and other discounts is available from your financial intermediary, in the Choosing a Share Class section beginning on page 19 of the Fund’s prospectus and in Appendix S to the Statement of Additional Information (SAI) under Sales Charge Waivers beginning on page S-1.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 50,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	other expenses for Class R4, Class R5 and Class Y are based on estimated amounts for the Fund’s current fiscal year.
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Other expenses for Class A, Class B, Class C, Class R and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	“Total annual Fund operating expenses” in the table (which includes acquired fund fees and expenses) may not match “Net Expenses” in the Financial Highlights section of this prospectus because it does not include such acquired fund fees and expenses.
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that: you invest $10,000 in the applicable class of Fund shares for the periods indicated, your investment has a 5% return each year, and the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above. Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in equity securities of companies that have market capitalizations in the range of the companies in the Russell 2000 Value Index at the time of purchase (between $14 million and $5.8 billion as of May 31, 2013) that the Fund’s investment manager believes are undervalued and have the potential for long-term growth. The Fund may invest up to 20% of its total assets in foreign securities, including depositary receipts. The Fund normally invests in common stocks and also may invest in real estate investment trusts. The Fund may from time to time emphasize one or more economic sectors in selecting its investments. The investment manager combines fundamental and quantitative analysis with risk management in identifying investment opportunities and constructing the Fund’s portfolio.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	An investment in the Fund involves risk, including those described below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and Fund share price may go down. Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with a similar investment objective. The Fund may fail to achieve its investment objective and you may lose money. Depositary Receipts Risks. Depositary receipts are receipts issued by a bank or trust company and evidence of ownership of underlying securities issued by foreign companies. Some foreign securities are traded in the form of American Depositary Receipts (ADRs). Depositary receipts involve the risks of other investments in foreign securities, including 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. In addition, ADR holders may not have all the legal rights of shareholders and may experience difficulty in receiving shareholder communications. Foreign Currency Risk. The performance of the Fund may be materially affected positively or negatively by foreign currency strength or weakness relative to the U.S. dollar, particularly if the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar. Foreign Securities Risk. Investments in foreign securities involve certain risks not associated with investments in securities of U.S. companies. Foreign securities subject the Fund to the risks associated with investing in the particular country, including the political, regulatory, economic, social, diplomatic and other conditions or events occurring in the country or region, as well as fluctuations in its currency and the risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than investments in securities of U.S. companies. Issuer Risk. An issuer in which the Fund invests may perform poorly, and therefore, the value of its securities may decline, which would negatively affect the Fund’s performance. Poor performance may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters or other events, conditions or factors. Market Risk. Market risk refers to the possibility that the market values of securities or other investments that the Fund holds will fall, sometimes rapidly or unpredictably, or fail to rise. An investment in the Fund could lose money over short or even long periods. In general, equity securities tend to have greater price volatility than debt securities. Quantitative Model Risk. Investments 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. Real Estate-related Investment Risk. Investment in real estate investment trusts (REITs) and in securities of other companies (wherever organized) principally engaged in the real estate industry subjects the Fund to, among other risks, risks similar to those of direct investments in real estate and the real estate industry in general, including risks related to general and local economic conditions, possible lack of availability of financing and changes in interest rates or property values. REITs are entities that either own properties or make construction or mortgage loans, and also may include operating or finance companies. The value of REIT shares is affected by, among other factors, changes in the value of the underlying properties owned by the REIT, by changes in the prospect for earnings and/or cash flow growth of the REIT itself, defaults by borrowers or tenants, market saturation, decreases in market rates for rents, and other economic, political, or regulatory matters affecting the real estate industry, including REITs. REITs and similar non-U.S. entities depend upon specialized management skills, may have limited financial resources, may have less trading volume in their securities, and may be subject to more abrupt or erratic price movements than the overall securities markets. REITs are also subject to the risk of failing to qualify for tax-free pass-through of income. Some REITs (especially mortgage REITs) are affected by risks similar to those associated with investments in debt securities including changes in interest rates and the quality of credit extended. Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within an economic sector, including the financial services sector. Companies in the same economic sector may be similarly affected by economic, regulatory, political or market events or conditions, making the Fund more vulnerable to unfavorable developments in that economic sector than funds that invest more broadly. The more a fund diversifies its investments, the more it spreads risk and potentially reduces the risks of loss and volatility. Because the Fund’s portfolio managers may invest significantly in the financial services sector, the Fund may be more susceptible to the particular risks of the financial services sector than if the Fund were invested in a wider variety of companies in unrelated industries. Small Company Securities Risk. Investments in small-capitalization companies (small-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies, and securities of small-cap companies may be less liquid and more volatile than the securities of larger companies. Value Securities Risk. Value securities are securities of companies that may have experienced, for example, adverse business, industry or other developments or may be subject to special risks that have caused the securities to be out of favor and, in turn, potentially undervalued. The market value of a portfolio security may not meet the portfolio manager's perceived value assessment of that security, or may decline in price, even though the portfolio manager(s) believe(s) the securities are already undervalued. There is also a risk that it may take longer than expected for the value of these investments to rise to the portfolio manager’s perceived value. In addition, value securities, at times, may not perform as well as growth securities or the stock market in general, and may be out of favor with investors for varying periods of time.
Risk Lose Money [Text]	rr_RiskLoseMoney	There is no assurance that the Fund will achieve its investment objective and you may lose money.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance. The performance of one or more share classes shown in the table below begins before the indicated inception date for such share class. The returns shown for each such share class include the returns of the Fund’s Class A shares (without applicable sales charges and adjusted to reflect the higher class-related operating expenses of such classes, where applicable) for periods prior to its inception date. Except for differences in annual returns resulting from differences in expenses and sales charges (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities. The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes. Your actual after-tax returns will depend on your personal tax situation and may differ from those shown in the table. In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs). The after-tax returns are shown only for Class A shares and will vary for other share classes. After-tax returns are shown for Class A shares because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiamanagement.com.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower. Class A share performance (without sales charges) is shown in the bar chart because Class A shares have at least ten calendar years of performance and Class A shares are the most common share class across the Columbia Funds complex that are available for investment by the general public. The table below the bar chart compares the Fund’s returns (after applicable sales charges) for the periods shown with benchmark performance.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	800.345.6611
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	columbiamanagement.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is no guarantee of how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Year by Year Total Return (%) as of December 31 Each Year
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	The bar chart shows how the Fund’s Class A share performance (without sales charges) has varied for each full calendar year shown. If the sales charges were reflected, returns shown would be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best and Worst Quarterly Returns During the Period Shown in the Bar Chart Best                              3rd Quarter 2009                            21.81% Worst                           4th Quarter 2008                            -23.89%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2012)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The after-tax returns shown in the table below are calculated using the highest historical individual U.S. federal marginal income tax rates and do not reflect the impact of state, local or foreign taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	In addition, the after-tax returns shown in the table do not apply to shares held in tax-deferred accounts such as 401(k) plans or Individual Retirement Accounts (IRAs).
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	The after-tax returns are shown only for Class A shares and will vary for other share classes.
Columbia Small Cap Value Fund II | Class A
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	5.75%
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[1]
Management fees	rr_ManagementFeesOverAssets	0.74%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.30%	[2]
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.03%
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.32%	[3]
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	702
3 years	rr_ExpenseExampleYear03	969
5 years	rr_ExpenseExampleYear05	1,257
10 years	rr_ExpenseExampleYear10	2,074
1 year	rr_ExpenseExampleNoRedemptionYear01	702
3 years	rr_ExpenseExampleNoRedemptionYear03	969
5 years	rr_ExpenseExampleNoRedemptionYear05	1,257
10 years	rr_ExpenseExampleNoRedemptionYear10	2,074
2003	rr_AnnualReturn2003	41.65%	[4]
2004	rr_AnnualReturn2004	23.86%	[4]
2005	rr_AnnualReturn2005	8.63%	[4]
2006	rr_AnnualReturn2006	16.76%	[4]
2007	rr_AnnualReturn2007	2.68%	[4]
2008	rr_AnnualReturn2008	(33.78%)	[4]
2009	rr_AnnualReturn2009	24.94%	[4]
2010	rr_AnnualReturn2010	25.37%	[4]
2011	rr_AnnualReturn2011	(2.70%)	[4]
2012	rr_AnnualReturn2012	14.23%	[4]
Year to Date Return, Label	rr_YearToDateReturnLabel	Year to Date return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	13.92%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Sep. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	21.81%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(23.89%)
1 Year	rr_AverageAnnualReturnYear01	7.67%
5 Years	rr_AverageAnnualReturnYear05	1.67%
10 Years	rr_AverageAnnualReturnYear10	9.52%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	May 01, 2002
Columbia Small Cap Value Fund II | Class B
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	5.00%	[5]
Management fees	rr_ManagementFeesOverAssets	0.74%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.30%	[2]
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.03%
Total annual Fund operating expenses	rr_ExpensesOverAssets	2.07%	[3]
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge decreases over time.
1 year	rr_ExpenseExampleYear01	710
3 years	rr_ExpenseExampleYear03	949
5 years	rr_ExpenseExampleYear05	1,314
10 years	rr_ExpenseExampleYear10	2,208
1 year	rr_ExpenseExampleNoRedemptionYear01	210
3 years	rr_ExpenseExampleNoRedemptionYear03	649
5 years	rr_ExpenseExampleNoRedemptionYear05	1,114
10 years	rr_ExpenseExampleNoRedemptionYear10	2,208
1 Year	rr_AverageAnnualReturnYear01	8.36%
5 Years	rr_AverageAnnualReturnYear05	1.72%
10 Years	rr_AverageAnnualReturnYear10	9.34%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	May 01, 2002
Columbia Small Cap Value Fund II | Class C
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	1.00%	[6]
Management fees	rr_ManagementFeesOverAssets	0.74%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.30%	[2]
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.03%
Total annual Fund operating expenses	rr_ExpensesOverAssets	2.07%	[3]
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	This charge applies to redemptions within one year of purchase, with certain limited exceptions.
1 year	rr_ExpenseExampleYear01	310
3 years	rr_ExpenseExampleYear03	649
5 years	rr_ExpenseExampleYear05	1,114
10 years	rr_ExpenseExampleYear10	2,400
1 year	rr_ExpenseExampleNoRedemptionYear01	210
3 years	rr_ExpenseExampleNoRedemptionYear03	649
5 years	rr_ExpenseExampleNoRedemptionYear05	1,114
10 years	rr_ExpenseExampleNoRedemptionYear10	2,400
1 Year	rr_AverageAnnualReturnYear01	12.37%
5 Years	rr_AverageAnnualReturnYear05	2.11%
10 Years	rr_AverageAnnualReturnYear10	9.33%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	May 01, 2002
Columbia Small Cap Value Fund II | Class I
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.74%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.12%	[2]
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.03%
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.89%	[3]
1 year	rr_ExpenseExampleYear01	91
3 years	rr_ExpenseExampleYear03	284
5 years	rr_ExpenseExampleYear05	493
10 years	rr_ExpenseExampleYear10	1,096
1 year	rr_ExpenseExampleNoRedemptionYear01	91
3 years	rr_ExpenseExampleNoRedemptionYear03	284
5 years	rr_ExpenseExampleNoRedemptionYear05	493
10 years	rr_ExpenseExampleNoRedemptionYear10	1,096
1 Year	rr_AverageAnnualReturnYear01	14.78%
5 Years	rr_AverageAnnualReturnYear05	3.13%
10 Years	rr_AverageAnnualReturnYear10	10.30%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 27, 2010
Columbia Small Cap Value Fund II | Class R
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.74%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.50%
Other expenses	rr_OtherExpensesOverAssets	0.30%	[2]
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.03%
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.57%	[3]
1 year	rr_ExpenseExampleYear01	160
3 years	rr_ExpenseExampleYear03	496
5 years	rr_ExpenseExampleYear05	855
10 years	rr_ExpenseExampleYear10	1,867
1 year	rr_ExpenseExampleNoRedemptionYear01	160
3 years	rr_ExpenseExampleNoRedemptionYear03	496
5 years	rr_ExpenseExampleNoRedemptionYear05	855
10 years	rr_ExpenseExampleNoRedemptionYear10	1,867
1 Year	rr_AverageAnnualReturnYear01	13.98%
5 Years	rr_AverageAnnualReturnYear05	2.63%
10 Years	rr_AverageAnnualReturnYear10	9.89%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 23, 2006
Columbia Small Cap Value Fund II | Class R4
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.74%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.30%	[2]
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.03%
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.07%	[3]
1 year	rr_ExpenseExampleYear01	109
3 years	rr_ExpenseExampleYear03	340
5 years	rr_ExpenseExampleYear05	590
10 years	rr_ExpenseExampleYear10	1,306
1 year	rr_ExpenseExampleNoRedemptionYear01	109
3 years	rr_ExpenseExampleNoRedemptionYear03	340
5 years	rr_ExpenseExampleNoRedemptionYear05	590
10 years	rr_ExpenseExampleNoRedemptionYear10	1,306
1 Year	rr_AverageAnnualReturnYear01	14.29%
5 Years	rr_AverageAnnualReturnYear05	2.89%
10 Years	rr_AverageAnnualReturnYear10	10.18%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia Small Cap Value Fund II | Class R5
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.74%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.17%	[2]
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.03%
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.94%	[3]
1 year	rr_ExpenseExampleYear01	96
3 years	rr_ExpenseExampleYear03	300
5 years	rr_ExpenseExampleYear05	520
10 years	rr_ExpenseExampleYear10	1,155
1 year	rr_ExpenseExampleNoRedemptionYear01	96
3 years	rr_ExpenseExampleNoRedemptionYear03	300
5 years	rr_ExpenseExampleNoRedemptionYear05	520
10 years	rr_ExpenseExampleNoRedemptionYear10	1,155
1 Year	rr_AverageAnnualReturnYear01	14.32%
5 Years	rr_AverageAnnualReturnYear05	2.90%
10 Years	rr_AverageAnnualReturnYear10	10.18%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia Small Cap Value Fund II | Class Y
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.74%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.12%	[2]
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.03%
Total annual Fund operating expenses	rr_ExpensesOverAssets	0.89%	[3]
1 year	rr_ExpenseExampleYear01	91
3 years	rr_ExpenseExampleYear03	284
5 years	rr_ExpenseExampleYear05	493
10 years	rr_ExpenseExampleYear10	1,096
1 year	rr_ExpenseExampleNoRedemptionYear01	91
3 years	rr_ExpenseExampleNoRedemptionYear03	284
5 years	rr_ExpenseExampleNoRedemptionYear05	493
10 years	rr_ExpenseExampleNoRedemptionYear10	1,096
1 Year	rr_AverageAnnualReturnYear01	14.35%
5 Years	rr_AverageAnnualReturnYear05	2.91%
10 Years	rr_AverageAnnualReturnYear10	10.18%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 08, 2012
Columbia Small Cap Value Fund II | Class Z
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a % of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	rr_MaximumDeferredSalesChargeOverOther	none
Management fees	rr_ManagementFeesOverAssets	0.74%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.30%	[2]
Acquired fund fees and expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.03%
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.07%	[3]
1 year	rr_ExpenseExampleYear01	109
3 years	rr_ExpenseExampleYear03	340
5 years	rr_ExpenseExampleYear05	590
10 years	rr_ExpenseExampleYear10	1,306
1 year	rr_ExpenseExampleNoRedemptionYear01	109
3 years	rr_ExpenseExampleNoRedemptionYear03	340
5 years	rr_ExpenseExampleNoRedemptionYear05	590
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 1,306
1 Year	rr_AverageAnnualReturnYear01	14.57%
5 Years	rr_AverageAnnualReturnYear05	3.14%
10 Years	rr_AverageAnnualReturnYear10	10.45%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	May 01, 2002
Columbia Small Cap Value Fund II | returns after taxes on distributions | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	7.19%
5 Years	rr_AverageAnnualReturnYear05	1.52%
10 Years	rr_AverageAnnualReturnYear10	8.69%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	May 01, 2002
Columbia Small Cap Value Fund II | returns after taxes on distributions and sale of Fund shares | Class A
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	5.60%
5 Years	rr_AverageAnnualReturnYear05	1.40%
10 Years	rr_AverageAnnualReturnYear10	8.11%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	May 01, 2002
Columbia Small Cap Value Fund II | Russell 2000 Value Index (reflects no deductions for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	18.05%
5 Years	rr_AverageAnnualReturnYear05	3.55%
10 Years	rr_AverageAnnualReturnYear10	9.50%

[1] This charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months of purchase, as follows: 1.00% if redeemed within 12 months of purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

[2] Other expenses for Class A, Class B, Class C, Class R and Class Z have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class R4, Class R5 and Class Y are based on estimated amounts for the Fund's current fiscal year.

[3] "Total annual Fund operating expenses" in the table (which includes acquired fund fees and expenses) may not match "Net Expenses" in the Financial Highlights section of this prospectus because it does not include such acquired fund fees and expenses.

[4] Year to Date return as of March 31, 2013: 13.92%

[5] This charge decreases over time.

[6] This charge applies to redemptions within one year of purchase, with certain limited exceptions.