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Risk/Return:

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Registrant Name

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COLUMBIA FUNDS SERIES TRUST

Prospectus Date

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Jun. 01, 2013

Columbia Capital Allocation Moderate Aggressive Portfolio

Risk/Return:

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Risk/Return [Heading]

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Summary of Columbia Capital Allocation Moderate Aggressive Portfolio

Objective [Heading]

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Investment Objective

Objective, Primary [Text Block]

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Columbia Capital Allocation Moderate Aggressive Portfolio (Moderate Aggressive Portfolio or the Fund) is designed for investors seeking the highest level of total return that is consistent with a moderate aggressive level of risk.

Expense [Heading]

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Fees and Expenses of the Fund

Expense Narrative [Text Block]

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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 58 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]

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Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

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

Portfolio Turnover [Heading]

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Portfolio Turnover

Portfolio Turnover [Text Block]

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The Fund and underlying funds pay transaction costs, such as commissions, when they buy and sell securities (or "turn over" their portfolios). The Fund will indirectly bear the expenses associated with portfolio turnover of the underlying funds. An underlying fund's higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 34% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

34.00%

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 58 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 K and Class Y shares are based on estimated amounts for the Fund's current fiscal year.

Expenses Restated to Reflect Current [Text]

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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, Class R4, Class T and Class Z shares 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]

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Example

Expense Example Narrative [Text Block]

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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 Expense table above.

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

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

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The Fund is primarily managed as a fund that invests in other funds (i.e., a "fund of funds") that seeks to achieve its investment objective by investing under normal circumstances in a combination of underlying funds for which Columbia Management Investment Advisers, LLC (the Investment Manager) or an affiliate serves as investment adviser or principal underwriter (the affiliated underlying funds). The Fund may also invest up to 20% of its net assets in other funds, including third-party advised (unaffiliated) funds and exchange-traded funds (ETFs) (collectively with the affiliated underlying funds, the Underlying Funds), equity securities, fixed income securities (including treasury inflation protected securities (TIPS)) and derivative instruments (the 20% Sleeve). The Fund's derivative investments may include forward foreign currency contracts and futures (including currency, equity, fixed income, index and interest rate futures). Derivative positions may be established to seek incremental earnings, hedge existing positions, increase market or credit exposure, increase investment flexibility (including using the derivative position as a substitute for the purchase or sale of the underlying security, currency or other instrument) and/or to change the effective duration of the Fund's portfolio. Collectively, these investments (including through investments in derivatives) provide the Fund with exposure to equity, fixed income, and cash/cash equivalent asset classes. The Fund may also pursue alternative investment strategies (alternative strategies), including those that seek investment returns uncorrelated to the broad equity and fixed income markets, as well as those providing exposure to other markets, including but not limited to absolute (positive) return strategies.

The Fund may invest in Underlying Funds categorized as "equity", "fixed income", "cash/cash equivalents", and "alternative strategies," which may represent indirect investments in various sectors, asset classes, strategies and markets. Under normal circumstances, the Fund emphasizes investments in Underlying Funds categorized as equity, which can include those that invest in equity securities representing different investment styles (e.g., growth, value and core/blend), market capitalizations (large-, mid- and small-cap), geographic focus (domestic and international, including emerging markets) and sector focus (e.g., real estate, technology, infrastructure and natural resources). The Fund may also invest in Underlying Funds categorized as fixed income Underlying Funds, which can include those investing in TIPs, U.S. treasury bonds and notes, mortgage-backed and asset-backed securities, investment grade corporate bonds, high yield bonds (junk bonds), high yield loans and international bonds (including those of issuers in developed and emerging markets), which may have varying interest rates, terms, duration and credit exposure. The Underlying Funds categorized as alternative strategies include those that employ a variety of investment strategies, techniques and practices, generally intended to have a low correlation to the performance of the broad equity and fixed income markets over a complete market cycle including but not limited to absolute (positive) return strategies. Subject to the 20% Sleeve limitation described above, the Fund may also invest directly in equity securities, fixed income securities and derivative instruments, including forward foreign currency contracts and futures (including currency, equity, fixed income, index and interest rate futures). By investing in a combination of Underlying Funds and other securities described in the 20% Sleeve, the Fund seeks to minimize the risks typically associated with investing in a traditional mutual fund.

Under normal market circumstances, the Fund may invest, directly or indirectly, in each of equity, fixed income and cash/cash equivalent asset classes and alternative strategies (each, an asset class category and collectively, the asset class categories) within the following target asset allocation ranges (includes investments in Underlying Funds and the other securities described in the 20% Sleeve):

Asset Class Exposures
	Equity	Fixed Income	Cash/Cash Equivalents	Alternatives
Moderate Aggressive Portfolio	20–85%*	15–60%*	0–40%*	0–40%*

*

As a percent of Fund net assets. Ranges include the net notional amounts of a Fund's direct investments in derivative instruments. Market appreciation or depreciation may cause a Fund to be temporarily outside the ranges identified in the table. The Investment Manager may modify the target allocation ranges only with the approval of a Fund's Board of Trustees (the Board).

The Fund may be most appropriate for investors with an intermediate-to-long term investment horizon.

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Principal Risks

Risk Narrative [Text Block]

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An investment in the Fund involves risk. Principal risks associated with an investment in the Fund include specific risks relating to the investment in the Fund based on its investment process, and certain general risks based on its " fund-of-funds" structure, 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.

Allocation Risk. The Fund uses an asset allocation strategy in pursuit of its investment objective. There is a risk that the Fund's allocation among asset classes, investments, managers, strategies and/or investment styles will cause the Fund's shares to lose value or cause the Fund to underperform other funds with a similar investment objective and/or strategies, or that the investments themselves will not produce the returns expected.

Credit Risk. Credit risk applies to most fixed income securities, but is generally less of a factor for obligations backed by the "full faith and credit" of the U.S. Government. It 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.

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.

Exchange-Traded Fund (ETF) Risk. ETFs are subject to, among other risks, tracking risk and passive and, in some cases, active investment risk. In addition, shareholders bear both their proportionate share of the Fund' s expenses and similar expenses incurred through ownership of the ETF.

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.

Fund-of-Funds Risk. There is risk that the Fund portfolio managers' investment determinations regarding asset classes or underlying funds and the Fund's allocations thereto may not be successful, in whole or in part. The ability of the Fund to realize its investment objective will depend, in large part, on the extent to which the underlying funds realize their investment objective. There is no guarantee that the underlying funds will achieve their investment objective. The Fund is exposed to the same risks as the underlying funds in direct proportion to the allocation of its assets among the underlying funds. By investing in a combination of underlying funds, the Fund has exposure to the risks of many areas of the market. 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.

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.

Inflation-Protected Securities Risk. Inflation-protected debt securities tend to react to changes in real interest rates (i.e., nominal interest rates minus the expected impact of inflation). In general, the price of such securities falls when real interest rates rise, and rises when real interest rates fall. Interest payments on these securities will vary and may be more volatile than interest paid on ordinary bonds. In periods of deflation, the Fund may have no income at all from such investments. The Fund's investment in certain inflation-protected debt securities may generate taxable income in excess of the interest they pay to the Fund, which may cause the Fund to sell investments to obtain cash to make income distributions to shareholders, including at times when it may not be advantageous to do so.

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.

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]

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There is no assurance that the Fund will achieve its investment objective and you may lose money.

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

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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. 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 Y shares of the Fund did not commence operations prior to the date of this prospectus and, therefore, performance is not yet available. Any share class that does not have available performance would have annual returns substantially similar to those of Class A shares. 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 One Year or Less [Text]

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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 Y 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]

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The Fund's past performance (before and after taxes) is no guarantee of how the Fund will perform in the future.

Bar Chart [Heading]

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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]

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

Best 2nd Quarter 2009 16.41%

Worst 4th Quarter 2008 -14.57%

Performance Table Heading

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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

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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]

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The after-tax returns are shown only for Class A shares and will vary for other share classes.

Columbia Capital Allocation Moderate Aggressive Portfolio | 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

0.03%

^[2]

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

rr_OtherExpensesOverAssets

0.24%

^[3]

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.72%

Total annual Fund operating expenses

rr_ExpensesOverAssets

1.24%

^[4]

Expenses Deferred Charges [Text Block]

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Contingent deferred sales charges (CDSC) 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.

rr_ExpenseExampleYear01

694

rr_ExpenseExampleYear03

946

rr_ExpenseExampleYear05

1,217

rr_ExpenseExampleYear10

1,989

rr_ExpenseExampleNoRedemptionYear01

694

rr_ExpenseExampleNoRedemptionYear03

946

rr_ExpenseExampleNoRedemptionYear05

1,217

rr_ExpenseExampleNoRedemptionYear10

1,989

rr_AnnualReturn2003

24.10%

^[5]

rr_AnnualReturn2004

10.17%

^[5]

rr_AnnualReturn2005

5.73%

^[5]

rr_AnnualReturn2006

12.22%

^[5]

rr_AnnualReturn2007

7.94%

^[5]

rr_AnnualReturn2008

(28.31%)

^[5]

rr_AnnualReturn2009

30.44%

^[5]

rr_AnnualReturn2010

15.32%

^[5]

rr_AnnualReturn2011

(0.97%)

^[5]

rr_AnnualReturn2012

12.42%

^[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

5.52%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

16.41%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(14.57%)

rr_AverageAnnualReturnYear01

5.98%

rr_AverageAnnualReturnYear05

2.50%

rr_AverageAnnualReturnYear10

7.07%

Share Class Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 15, 1996

Columbia Capital Allocation Moderate Aggressive Portfolio | 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

0.03%

^[2]

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

0.24%

^[3]

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.72%

Total annual Fund operating expenses

rr_ExpensesOverAssets

1.99%

^[4]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

This charge decreases over time.

rr_ExpenseExampleYear01

702

rr_ExpenseExampleYear03

924

rr_ExpenseExampleYear05

1,273

rr_ExpenseExampleYear10

2,123

rr_ExpenseExampleNoRedemptionYear01

202

rr_ExpenseExampleNoRedemptionYear03

624

rr_ExpenseExampleNoRedemptionYear05

1,073

rr_ExpenseExampleNoRedemptionYear10

2,123

rr_AverageAnnualReturnYear01

6.58%

rr_AverageAnnualReturnYear05

2.59%

rr_AverageAnnualReturnYear10

6.90%

Share Class Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 13, 2006

Columbia Capital Allocation Moderate Aggressive Portfolio | 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

0.03%

^[2]

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

0.24%

^[3]

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.72%

Total annual Fund operating expenses

rr_ExpensesOverAssets

1.99%

^[4]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

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

rr_ExpenseExampleYear01

302

rr_ExpenseExampleYear03

624

rr_ExpenseExampleYear05

1,073

rr_ExpenseExampleYear10

2,317

rr_ExpenseExampleNoRedemptionYear01

202

rr_ExpenseExampleNoRedemptionYear03

624

rr_ExpenseExampleNoRedemptionYear05

1,073

rr_ExpenseExampleNoRedemptionYear10

2,317

rr_AverageAnnualReturnYear01

10.62%

rr_AverageAnnualReturnYear05

2.93%

rr_AverageAnnualReturnYear10

6.91%

Share Class Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 15, 1996

Columbia Capital Allocation Moderate Aggressive Portfolio | 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

0.03%

^[2]

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.37%

^[3]

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.72%

Total annual Fund operating expenses

rr_ExpensesOverAssets

1.12%

^[4]

rr_ExpenseExampleYear01

114

rr_ExpenseExampleYear03

356

rr_ExpenseExampleYear05

617

rr_ExpenseExampleYear10

1,363

rr_ExpenseExampleNoRedemptionYear01

114

rr_ExpenseExampleNoRedemptionYear03

356

rr_ExpenseExampleNoRedemptionYear05

617

rr_ExpenseExampleNoRedemptionYear10

1,363

Columbia Capital Allocation Moderate Aggressive Portfolio | 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

0.03%

^[2]

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

rr_OtherExpensesOverAssets

0.24%

^[3]

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.72%

Total annual Fund operating expenses

rr_ExpensesOverAssets

1.49%

^[4]

rr_ExpenseExampleYear01

152

rr_ExpenseExampleYear03

471

rr_ExpenseExampleYear05

813

rr_ExpenseExampleYear10

1,779

rr_ExpenseExampleNoRedemptionYear01

152

rr_ExpenseExampleNoRedemptionYear03

471

rr_ExpenseExampleNoRedemptionYear05

813

rr_ExpenseExampleNoRedemptionYear10

1,779

rr_AverageAnnualReturnYear01

12.16%

rr_AverageAnnualReturnYear05

3.47%

rr_AverageAnnualReturnYear10

7.44%

Share Class Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 23, 2006

Columbia Capital Allocation Moderate Aggressive Portfolio | 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

0.03%

^[2]

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.24%

^[3]

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.72%

Total annual Fund operating expenses

rr_ExpensesOverAssets

0.99%

^[4]

rr_ExpenseExampleYear01

101

rr_ExpenseExampleYear03

315

rr_ExpenseExampleYear05

547

rr_ExpenseExampleYear10

1,213

rr_ExpenseExampleNoRedemptionYear01

101

rr_ExpenseExampleNoRedemptionYear03

315

rr_ExpenseExampleNoRedemptionYear05

547

rr_ExpenseExampleNoRedemptionYear10

1,213

rr_AverageAnnualReturnYear01

12.40%

rr_AverageAnnualReturnYear05

3.72%

rr_AverageAnnualReturnYear10

7.71%

Share Class Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 08, 2012

Columbia Capital Allocation Moderate Aggressive Portfolio | 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

0.03%

^[2]

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.12%

^[3]

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.72%

Total annual Fund operating expenses

rr_ExpensesOverAssets

0.87%

^[4]

rr_ExpenseExampleYear01

89

rr_ExpenseExampleYear03

278

rr_ExpenseExampleYear05

482

rr_ExpenseExampleYear10

1,073

rr_ExpenseExampleNoRedemptionYear01

89

rr_ExpenseExampleNoRedemptionYear03

278

rr_ExpenseExampleNoRedemptionYear05

482

rr_ExpenseExampleNoRedemptionYear10

1,073

rr_AverageAnnualReturnYear01

12.43%

rr_AverageAnnualReturnYear05

3.73%

rr_AverageAnnualReturnYear10

7.71%

Share Class Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 08, 2012

Columbia Capital Allocation Moderate Aggressive Portfolio | Class T

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

0.03%

^[2]

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.54%

^[3]

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.72%

Total annual Fund operating expenses

rr_ExpensesOverAssets

1.29%

^[4]

rr_ExpenseExampleYear01

699

rr_ExpenseExampleYear03

960

rr_ExpenseExampleYear05

1,242

rr_ExpenseExampleYear10

2,042

rr_ExpenseExampleNoRedemptionYear01

699

rr_ExpenseExampleNoRedemptionYear03

960

rr_ExpenseExampleNoRedemptionYear05

1,242

rr_ExpenseExampleNoRedemptionYear10

2,042

rr_AverageAnnualReturnYear01

6.02%

rr_AverageAnnualReturnYear05

2.45%

rr_AverageAnnualReturnYear10

7.02%

Share Class Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 07, 2011

Columbia Capital Allocation Moderate Aggressive Portfolio | 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

0.03%

^[2]

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.07%

^[3]

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.72%

Total annual Fund operating expenses

rr_ExpensesOverAssets

0.82%

^[4]

rr_ExpenseExampleYear01

84

rr_ExpenseExampleYear03

262

rr_ExpenseExampleYear05

455

rr_ExpenseExampleYear10

1,014

rr_ExpenseExampleNoRedemptionYear01

84

rr_ExpenseExampleNoRedemptionYear03

262

rr_ExpenseExampleNoRedemptionYear05

455

rr_ExpenseExampleNoRedemptionYear10

1,014

Columbia Capital Allocation Moderate Aggressive Portfolio | 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

0.03%

^[2]

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.24%

^[3]

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.72%

Total annual Fund operating expenses

rr_ExpensesOverAssets

0.99%

^[4]

rr_ExpenseExampleYear01

101

rr_ExpenseExampleYear03

315

rr_ExpenseExampleYear05

547

rr_ExpenseExampleYear10

1,213

rr_ExpenseExampleNoRedemptionYear01

101

rr_ExpenseExampleNoRedemptionYear03

315

rr_ExpenseExampleNoRedemptionYear05

547

rr_ExpenseExampleNoRedemptionYear10

1,213

rr_AverageAnnualReturnYear01

12.72%

rr_AverageAnnualReturnYear05

4.01%

rr_AverageAnnualReturnYear10

7.99%

Share Class Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 15, 1996

Columbia Capital Allocation Moderate Aggressive Portfolio | returns after taxes on distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

5.12%

rr_AverageAnnualReturnYear05

1.54%

rr_AverageAnnualReturnYear10

5.99%

Share Class Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 15, 1996

Columbia Capital Allocation Moderate Aggressive Portfolio | returns after taxes on distributions and sale of Fund shares | Class A

Risk/Return:

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

4.59%

rr_AverageAnnualReturnYear05

1.77%

rr_AverageAnnualReturnYear10

5.75%

Share Class Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 15, 1996

Columbia Capital Allocation Moderate Aggressive Portfolio | S&P 500 Index (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

16.00%

rr_AverageAnnualReturnYear05

1.66%

rr_AverageAnnualReturnYear10

7.10%

Columbia Capital Allocation Moderate Aggressive Portfolio | Barclays U.S. Aggregate Bond Index (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

4.21%

rr_AverageAnnualReturnYear05

5.95%

rr_AverageAnnualReturnYear10

5.18%

[1]	Contingent deferred sales charges (CDSC) 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, Class R4, Class T and Class Z shares have been restated to reflect contractual changes to certain fees paid by the Fund and other expenses for Class K and Class Y shares are based on estimated amounts for the Fund's current fiscal year.
[4]	"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.
[5]	Year to Date return as of March 31, 2013: 5.52%
[6]	This charge decreases over time.
[7]	This charge applies to redemptions within one year of purchase, with certain limited exceptions.