Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	COLUMBIA FUNDS SERIES TRUST I
Prospectus Date	rr_ProspectusDate	Aug. 01, 2013
Columbia Pacific/Asia 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 Pacific/Asia 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 members of your immediate family 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 78% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	78.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you and members of your immediate family 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 is 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 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. 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, but not limited to, common stocks, preferred stocks and securities convertible into common or preferred stocks) of companies located in Asia and the Pacific Basin, which includes Australia, New Zealand and India, and other countries within this region (the Pacific/Asia region). The Fund may invest in a variety of countries (including emerging markets), industries and sectors and does not attempt to invest a specific percentage of its assets in any given country, industry or sector. The Fund may invest in companies that have market capitalizations of any size. The Fund may invest in currency forwards and futures 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 may invest in special situations such as companies involved in initial public offerings, tender offers, mergers and other corporate restructurings, and in companies involved in management changes or companies developing new technologies. The Fund may invest in securities believed to be undervalued, represent growth opportunities, or both.
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 similar investment objectives. The Fund may fail to achieve its investment objective and you may lose money. Asia Pacific Region Risk. Many of the countries in the Asia Pacific 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 in the value of the Fund' s investments and losses within the Fund. Also, securities of some companies in the region can be less liquid than U.S. or other foreign securities, potentially making it difficult for the Fund to sell such securities at a desirable time and price. Derivatives Risk. Losses involving derivative instruments may be substantial, because a relatively small movement in the price of an underlying security, 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 strategy of investing in these instruments may not be successful. 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 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. 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 the value of its securities may therefore 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. 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 Z share performance has varied for each full calendar year shown. Class Z share performance is shown in the bar chart because Class Z (or its predecessor share class) is 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 R4 shares of the Fund commenced operations after the periods ended shown in the table below 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 Z 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 returns shown for the Fund include the returns of Pacific/Asia Fund, the predecessor to the Fund and a series of Excelsior Funds, Inc., for periods prior to March 31, 2008. 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. After-tax returns are shown for Class Z shares because Class Z (or its predecessor share class) is 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 Class Z (or its predecessor share class) is 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 R4 shares of the Fund commenced operations after the periods ended shown in the table below 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                             30.63% Worst                         3rd Quarter 2008                            -20.64%
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	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).
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.
Columbia Pacific/Asia 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	0.87%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.45%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.57%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	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.
1 year	rr_ExpenseExampleYear01	726
3 years	rr_ExpenseExampleYear03	1,042
5 years	rr_ExpenseExampleYear05	1,381
10 years	rr_ExpenseExampleYear10	2,335
1 year	rr_ExpenseExampleNoRedemptionYear01	726
3 years	rr_ExpenseExampleNoRedemptionYear03	1,042
5 years	rr_ExpenseExampleNoRedemptionYear05	1,381
10 years	rr_ExpenseExampleNoRedemptionYear10	2,335
1 Year	rr_AverageAnnualReturnYear01	10.22%
5 Years	rr_AverageAnnualReturnYear05	(1.15%)
10 Years	rr_AverageAnnualReturnYear10	8.67%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 31, 2008
Columbia Pacific/Asia 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%	[3]
Management fees	rr_ManagementFeesOverAssets	0.87%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses	rr_OtherExpensesOverAssets	0.45%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	2.32%
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	335
3 years	rr_ExpenseExampleYear03	724
5 years	rr_ExpenseExampleYear05	1,240
10 years	rr_ExpenseExampleYear10	2,656
1 year	rr_ExpenseExampleNoRedemptionYear01	235
3 years	rr_ExpenseExampleNoRedemptionYear03	724
5 years	rr_ExpenseExampleNoRedemptionYear05	1,240
10 years	rr_ExpenseExampleNoRedemptionYear10	2,656
1 Year	rr_AverageAnnualReturnYear01	15.20%
5 Years	rr_AverageAnnualReturnYear05	(0.66%)
10 Years	rr_AverageAnnualReturnYear10	8.53%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 31, 2008
Columbia Pacific/Asia 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	0.87%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.20%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.07%
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	17.55%
5 Years	rr_AverageAnnualReturnYear05	0.41%
10 Years	rr_AverageAnnualReturnYear10	9.66%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 27, 2010
Columbia Pacific/Asia 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	0.87%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.45%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.32%
1 year	rr_ExpenseExampleYear01	134
3 years	rr_ExpenseExampleYear03	418
5 years	rr_ExpenseExampleYear05	723
10 years	rr_ExpenseExampleYear10	1,590
1 year	rr_ExpenseExampleNoRedemptionYear01	134
3 years	rr_ExpenseExampleNoRedemptionYear03	418
5 years	rr_ExpenseExampleNoRedemptionYear05	723
10 years	rr_ExpenseExampleNoRedemptionYear10	1,590
Columbia Pacific/Asia 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	0.87%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses	rr_OtherExpensesOverAssets	0.45%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.57%
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	16.99%
5 Years	rr_AverageAnnualReturnYear05	0.13%
10 Years	rr_AverageAnnualReturnYear10	9.40%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 18, 2012
Columbia Pacific/Asia 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	0.87%
Distribution and/or service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.45%	[2]
Total annual Fund operating expenses	rr_ExpensesOverAssets	1.32%
1 year	rr_ExpenseExampleYear01	134
3 years	rr_ExpenseExampleYear03	418
5 years	rr_ExpenseExampleYear05	723
10 years	rr_ExpenseExampleYear10	1,590
1 year	rr_ExpenseExampleNoRedemptionYear01	134
3 years	rr_ExpenseExampleNoRedemptionYear03	418
5 years	rr_ExpenseExampleNoRedemptionYear05	723
10 years	rr_ExpenseExampleNoRedemptionYear10	$ 1,590
2003	rr_AnnualReturn2003	42.12%	[4]
2004	rr_AnnualReturn2004	13.51%	[4]
2005	rr_AnnualReturn2005	24.12%	[4]
2006	rr_AnnualReturn2006	10.32%	[4]
2007	rr_AnnualReturn2007	11.49%	[4]
2008	rr_AnnualReturn2008	(40.30%)	[4]
2009	rr_AnnualReturn2009	38.39%	[4]
2010	rr_AnnualReturn2010	21.31%	[4]
2011	rr_AnnualReturn2011	(13.45%)	[4]
2012	rr_AnnualReturn2012	17.32%	[4]
Year to Date Return, Label	rr_YearToDateReturnLabel	Year to Date return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Jun. 30, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	2.09%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	30.63%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(20.64%)
1 Year	rr_AverageAnnualReturnYear01	17.32%
5 Years	rr_AverageAnnualReturnYear05	0.35%
10 Years	rr_AverageAnnualReturnYear10	9.62%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 1992
Columbia Pacific/Asia Fund | returns after taxes on distributions | Class Z
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	17.12%
5 Years	rr_AverageAnnualReturnYear05	(0.25%)
10 Years	rr_AverageAnnualReturnYear10	8.81%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 1992
Columbia Pacific/Asia Fund | returns after taxes on distributions and sale of Fund shares | Class Z
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	11.98%
5 Years	rr_AverageAnnualReturnYear05	0.27%
10 Years	rr_AverageAnnualReturnYear10	8.46%
Share Class Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 1992
Columbia Pacific/Asia Fund | MSCI All Country Asia Pacific 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	16.78%
5 Years	rr_AverageAnnualReturnYear05	(1.48%)
10 Years	rr_AverageAnnualReturnYear10	9.73%
Columbia Pacific/Asia 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] 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] Other expenses for Class A, 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 R4 is based on estimated amounts for the Fund's current fiscal year.

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

[4] Year to Date return as of June 30, 2013: 2.09%