Objective, Primary [Text Block]

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Risk/Return [Heading]

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Summary of the Fund

Objective [Heading]

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Investment Objective

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Columbia Global Technology Growth Fund (the Fund) seeks capital appreciation by investing, under normal market conditions, at least 80% of its total net assets (plus any borrowings for investment purposes) in stocks of technology companies that may benefit from technological improvements, advancements or developments.

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, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. 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. (the Distributor). More information is available about these and other sales charge discounts and waivers from your financial intermediary, and can be found in the Choosing a Share Class section beginning on page 24 of the Fund’s prospectus, in Appendix A to the prospectus beginning on page A-1 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]

rr_OperatingExpensesCaption

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 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 8% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

8.00%

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. (the Distributor). More information is available about these and other sales charge discounts and waivers from your financial intermediary, and can be found in the Choosing a Share Class section beginning on page 24 of the Fund’s prospectus, in Appendix A to the prospectus beginning on page A-1 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

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 Expenses table above.

Class C shares’ 10-year cost examples below reflect the Class C Shares 8-Year Conversion Policy. 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]

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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 technology companies that may benefit from technological improvements, advancements or developments. For these purposes, technology companies are those companies that, in the opinion of the Fund’s investment manager, use technology extensively to improve their business processes, applications and opportunities or seek to grow through technological developments and innovations. Technology companies include companies in technology-related industries or sectors, such as the information technology, communications, healthcare, media, consumer electronics, semi-conductor, internet commerce and advertising, environmental, aerospace and defense industries and sectors. The Fund may invest in companies that have market capitalizations of any size and may invest a significant amount of its assets in smaller companies.

Under normal circumstances, the Fund invests at least 40% of its net assets in companies that maintain their principal place of business or conduct their principal business activities outside the U.S., companies that have their securities traded on non-U.S. exchanges, companies that have been formed under the laws of non-U.S. countries or foreign currencies. The Fund considers a company to conduct its principal business activities outside the U.S. if it derives at least 50% of its revenue or profits from business outside the U.S. or has at least 50% of its sales or assets outside the U.S. From time to time, the Fund may be below this 40% level and, in such circumstances, the Fund will endeavor to invest its assets to bring the Fund’s net assets above this 40% level while giving due regard to the Investment Manager’s view of market and other conditions and available investment opportunities.

Under normal circumstances, the Fund invests at least 25% of the value of its total net assets at the time of purchase in the securities of issuers conducting their principal business activities in the technology and related group of industries.

The Fund invests primarily in common stocks of companies that the investment manager believes have the potential for long-term growth.

The Fund’s investment strategy may involve the frequent trading of portfolio securities. The Fund may invest directly in foreign securities or indirectly through depositary receipts.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

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An investment in the Fund involves risks, including Foreign Securities Risk, Information Technology Sector Risk and Market Risk, among others. Descriptions of these and other principal risks of investing in the Fund are provided 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 share price may go down. An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The significance of any specific risk to an investment in the Fund will vary over time depending on the composition of the Fund's portfolio, market conditions, and other factors. You should read all of the risk information below carefully, because any one or more of these risks may result in losses to the Fund.

Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with similar investment objectives and/or strategies.

Convertible Securities Risk. Convertible securities are subject to the usual risks associated with debt instruments, 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.

Depositary Receipts Risk. Depositary receipts are receipts issued by a bank or trust company reflecting ownership of underlying securities issued by foreign companies. Some foreign securities are traded in the form of American Depositary Receipts and/or Global Depositary Receipts. Depositary receipts involve risks similar to the risks associated with investments in foreign securities, including those associated with an issuer’s (and any of its related companies’) country of organization and places of business operations, which may be related to the particular political, regulatory, economic, social and other conditions or events (including, for example, military confrontations and actions, war, other conflicts, terrorism and disease/virus outbreaks and epidemics) occurring in the country and fluctuations in such country’s currency, as well as market risk tied to the underlying foreign company. In addition, holders of depositary receipts may have limited voting rights, may not have the same rights afforded to stockholders of a typical domestic company in the event of a corporate action, such as an acquisition, merger or rights offering, and may experience difficulty in receiving company stockholder communications. There is no guarantee that a financial institution will continue to sponsor a depositary receipt, or that a depositary receipt will continue to trade on an exchange, either of which could adversely affect the liquidity, availability and pricing of the depositary receipt. Changes in foreign currency exchange rates will affect the value of depositary receipts and, therefore, may affect the value of your investment in the Fund.

Foreign Securities Risk. Investments in or exposure to securities of foreign companies may involve heightened risks relative to investments in or exposure to securities of U.S. companies. Investing in securities of foreign companies subjects the Fund to the risks associated with an issuer’s (and any of its related companies’) country of organization and places of business operations, including risks related to political, regulatory, economic, social, diplomatic and other conditions or events (including, for example, military confrontations and actions, war, other conflicts, terrorism and disease/virus outbreaks and epidemics) occurring in the country or region, as well as risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than securities of U.S. companies, and are subject to the risks associated with potential imposition of economic and other sanctions against a particular foreign country, its nationals or industries or businesses within the country. In addition, foreign governments may impose withholding or other taxes on the Fund’s income, capital gains or proceeds from the

disposition of foreign securities, which could reduce the Fund’s return on such securities. The performance of the Fund may also be negatively affected by fluctuations in a foreign currency's strength or weakness relative to the U.S. dollar, particularly to the extent the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar.

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 never reach their expected market value and may decline in price. 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 or to which it has exposure may perform poorly or below expectations, and the value of its securities may therefore decline, which may negatively affect the Fund’s performance. Underperformance of an issuer 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, military confrontations and actions, war, other conflicts, terrorism, disease/virus outbreaks, epidemics or other events, conditions and factors which may impair the value of an investment in the Fund.

■

Small- and Mid-Cap Stock 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. Securities of small- and mid-cap companies may be less liquid and more volatile than the securities of larger companies.

■

Large-Cap Stock Risk. Investments in larger companies may involve certain risks associated with their larger size. For instance, larger companies may be less able to respond quickly to new competitive challenges, such as changes in consumer tastes or innovation from smaller competitors. Also, larger companies are sometimes less able to achieve as high growth rates as successful smaller companies, especially during extended periods of economic expansion.

Liquidity Risk. Liquidity risk is the risk associated with any event, circumstance, or characteristic of an investment or market that negatively impacts the Fund’s ability to sell, or realize the proceeds from the sale of, an investment at a desirable time or price. Liquidity risk may arise because of, for example, a lack of marketability of the investment, which means that when seeking to sell its portfolio investments, the Fund could find that selling is more difficult than anticipated, especially during times of high market volatility. Market participants attempting to sell the same or a similar instrument at the same time as the Fund could exacerbate the Fund’s exposure to liquidity risk. The Fund may have to accept a lower selling price for the holding, sell other liquid or more liquid investments that it might otherwise prefer to hold (thereby increasing the proportion of the Fund’s investments in less liquid or illiquid securities), or forego another more appealing investment opportunity. The liquidity of Fund investments may change significantly over time and certain investments that were liquid when purchased by the Fund may later become illiquid, particularly in times of overall economic distress. Changing regulatory, market or other conditions or environments (for example, the interest rate or credit environments) may also adversely affect the liquidity and the price of the Fund's investments. Judgment plays a larger role in valuing illiquid or less liquid investments as compared to valuing liquid or more liquid investments. Price volatility may be higher for illiquid or less liquid investments as a result of, for example, the relatively less frequent pricing of such securities (as compared to liquid or more liquid investments). Generally, the less liquid the market at the time the Fund sells a portfolio investment, the greater the risk of loss or decline of value to the Fund. Overall market liquidity and other factors can lead to an increase in redemptions, which

may negatively impact Fund performance and NAV, including, for example, if the Fund is forced to sell investments in a down market. Foreign securities can present enhanced liquidity risks, including as a result of less developed custody, settlement or other practices of foreign markets.

Market Risk. The Fund may incur losses due to declines in the value of one or more securities in which it invests. These declines may be due to factors affecting a particular issuer, or the result of, among other things, political, regulatory, market, economic or social developments affecting the relevant market(s) more generally. In addition, turbulence in financial markets and reduced liquidity in equity, credit and/or fixed income markets may negatively affect many issuers, which could adversely affect the Fund’s ability to price or value hard-to-value assets in thinly traded and closed markets and could cause significant redemptions and operational challenges. Global economies and financial markets are increasingly interconnected, and conditions and events in one country, region or financial market may adversely impact issuers in a different country, region or financial market. These risks may be magnified if certain events or developments adversely interrupt the global supply chain; in these and other circumstances, such risks might affect companies worldwide. As a result, local, regional or global events such as terrorism, war, other conflicts, natural disasters, disease/virus outbreaks and epidemics or other public health issues, recessions, depressions or other events – or the potential for such events – could have a significant negative impact on global economic and market conditions.

Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business within one or more economic sectors, including the information technology sector. Companies in the same sector may be similarly affected by economic, regulatory, political or market events or conditions, which may make the Fund more vulnerable to unfavorable developments in that sector than funds that invest more broadly. Generally, the more broadly the Fund invests, the more it spreads risk and potentially reduces the risks of loss and volatility.

■

Information Technology Sector. The Fund is more susceptible to the particular risks that may affect companies in the information technology sector than if it were invested in a wider variety of companies in unrelated sectors. Companies in the information technology sector are subject to certain risks, including the risk that new services, equipment or technologies will not be accepted by consumers and businesses or will become rapidly obsolete. Performance of such companies may be affected by factors including obtaining and protecting patents (or the failure to do so) and significant competitive pressures, including aggressive pricing of their products or services, new market entrants, competition for market share and short product cycles due to an accelerated rate of technological developments. Such competitive pressures may lead to limited earnings and/or falling profit margins. As a result, the value of their securities may fall or fail to rise. In addition, many information technology sector companies have limited operating histories and prices of these companies’ securities historically have been more volatile than other securities, especially over the short term. Some companies in the information technology sector are facing increased government and regulatory scrutiny and may be subject to adverse government or regulatory action, which could negatively impact the value of their securities.

Risk Lose Money [Text]

rr_RiskLoseMoney

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

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

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. The table below the bar chart compares the Fund’s returns (after applicable sales charges shown in the Shareholder Fees table in this prospectus) for the periods shown with a broad measure of market 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 Inst shares 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 Average Annual Total Returns table below are calculated using the highest historical individual U.S. federal marginal income tax rates in effect during the period indicated in the table 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-advantaged 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.

The Fund’s performance prior to July 2014 reflects returns achieved pursuant to different principal investment strategies. If the Fund’s current strategies had been in place for the prior periods, results shown may have been different.

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 columbiathreadneedleus.com.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800.345.6611

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

columbiathreadneedleus.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]

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Best and Worst Quarterly Returns During the Period Shown in the Bar Chart Best 2nd Quarter 2020 31.72% Worst 4th Quarter 2018 -17.46%

Performance Table Heading

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Average Annual Total Returns After Applicable Sales Charges (for periods ended December 31, 2021)

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

The table below the bar chart compares the Fund’s returns (after applicable sales charges shown in the Shareholder Fees table in this prospectus) for the periods shown with a broad measure of market performance.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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-advantaged 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 Global Technology Growth Fund | Class A

Maximum sales charge (load) imposed on purchases (as a % of offering price)

rr_RiskReturnAbstract

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]

rr_ManagementFeesOverAssets

0.80%

rr_DistributionAndService12b1FeesOverAssets

0.25%

rr_OtherExpensesOverAssets

0.13%

Expenses Deferred Charges [Text Block]

rr_ExpensesOverAssets

1.18%

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 after purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

rr_ExpenseExampleYear01

$ 688

rr_ExpenseExampleYear03

928

rr_ExpenseExampleYear05

1,187

rr_ExpenseExampleYear10

1,924

rr_ExpenseExampleNoRedemptionYear01

688

rr_ExpenseExampleNoRedemptionYear03

928

rr_ExpenseExampleNoRedemptionYear05

1,187

Year to Date Return, Label

rr_ExpenseExampleNoRedemptionYear10

$ 1,924

2012

rr_AnnualReturn2012

18.22%

^[2]

2013

rr_AnnualReturn2013

46.33%

^[2]

2014

rr_AnnualReturn2014

16.66%

^[2]

2015

rr_AnnualReturn2015

10.26%

^[2]

2016

rr_AnnualReturn2016

12.73%

^[2]

2017

rr_AnnualReturn2017

42.93%

^[2]

2018

rr_AnnualReturn2018

(1.34%)

^[2]

2019

rr_AnnualReturn2019

42.02%

^[2]

2020

rr_AnnualReturn2020

49.45%

^[2]

2021

rr_AnnualReturn2021

22.88%

^[2]

rr_YearToDateReturnLabel

Year to Date return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2022

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(36.21%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2020

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

31.72%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2018

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(17.46%)

rr_AverageAnnualReturnYear01

15.81%

rr_AverageAnnualReturnYear05

28.23%

rr_AverageAnnualReturnYear10

24.14%

Columbia Global Technology Growth Fund | Class Adv

rr_AverageAnnualReturnInceptionDate

Nov. 01, 2002

Maximum sales charge (load) imposed on purchases (as a % of offering price)

rr_RiskReturnAbstract

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

rr_ManagementFeesOverAssets

0.80%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.13%

rr_ExpensesOverAssets

0.93%

rr_ExpenseExampleYear01

$ 95

rr_ExpenseExampleYear03

296

rr_ExpenseExampleYear05

515

rr_ExpenseExampleYear10

1,143

rr_ExpenseExampleNoRedemptionYear01

rr_ExpenseExampleNoRedemptionYear03

296

rr_ExpenseExampleNoRedemptionYear05

515

rr_ExpenseExampleNoRedemptionYear10

$ 1,143

rr_AverageAnnualReturnYear01

23.20%

rr_AverageAnnualReturnYear05

30.08%

rr_AverageAnnualReturnYear10

25.19%

Columbia Global Technology Growth Fund | Class C

rr_AverageAnnualReturnInceptionDate

Nov. 08, 2012

Maximum sales charge (load) imposed on purchases (as a % of offering price)

rr_RiskReturnAbstract

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]

rr_ManagementFeesOverAssets

0.80%

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

0.13%

Expenses Deferred Charges [Text Block]

rr_ExpensesOverAssets

1.93%

rr_ExpensesDeferredChargesTextBlock

This charge applies to redemptions within 12 months after purchase, with certain limited exceptions.

rr_ExpenseExampleYear01

$ 296

rr_ExpenseExampleYear03

606

rr_ExpenseExampleYear05

1,042

rr_ExpenseExampleYear10

2,059

rr_ExpenseExampleNoRedemptionYear01

196

rr_ExpenseExampleNoRedemptionYear03

606

rr_ExpenseExampleNoRedemptionYear05

1,042

rr_ExpenseExampleNoRedemptionYear10

$ 2,059

rr_AverageAnnualReturnYear01

20.96%

rr_AverageAnnualReturnYear05

28.79%

rr_AverageAnnualReturnYear10

23.94%

Columbia Global Technology Growth Fund | Class Inst

rr_AverageAnnualReturnInceptionDate

Oct. 13, 2003

Maximum sales charge (load) imposed on purchases (as a % of offering price)

rr_RiskReturnAbstract

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

rr_ManagementFeesOverAssets

0.80%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.13%

rr_ExpensesOverAssets

0.93%

rr_ExpenseExampleYear01

$ 95

rr_ExpenseExampleYear03

296

rr_ExpenseExampleYear05

515

rr_ExpenseExampleYear10

1,143

rr_ExpenseExampleNoRedemptionYear01

rr_ExpenseExampleNoRedemptionYear03

296

rr_ExpenseExampleNoRedemptionYear05

515

rr_ExpenseExampleNoRedemptionYear10

$ 1,143

rr_AverageAnnualReturnYear01

23.19%

rr_AverageAnnualReturnYear05

30.08%

rr_AverageAnnualReturnYear10

25.19%

Columbia Global Technology Growth Fund | Class Inst2

rr_AverageAnnualReturnInceptionDate

Nov. 09, 2000

Maximum sales charge (load) imposed on purchases (as a % of offering price)

rr_RiskReturnAbstract

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

rr_ManagementFeesOverAssets

0.80%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.08%

rr_ExpensesOverAssets

0.88%

rr_ExpenseExampleYear01

$ 90

rr_ExpenseExampleYear03

281

rr_ExpenseExampleYear05

488

rr_ExpenseExampleYear10

1,084

rr_ExpenseExampleNoRedemptionYear01

rr_ExpenseExampleNoRedemptionYear03

281

rr_ExpenseExampleNoRedemptionYear05

488

rr_ExpenseExampleNoRedemptionYear10

$ 1,084

rr_AverageAnnualReturnYear01

23.25%

rr_AverageAnnualReturnYear05

30.17%

rr_AverageAnnualReturnYear10

25.31%

Columbia Global Technology Growth Fund | Class Inst3

rr_AverageAnnualReturnInceptionDate

Nov. 08, 2012

Maximum sales charge (load) imposed on purchases (as a % of offering price)

rr_RiskReturnAbstract

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

rr_ManagementFeesOverAssets

0.80%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.03%

rr_ExpensesOverAssets

0.83%

rr_ExpenseExampleYear01

$ 85

rr_ExpenseExampleYear03

265

rr_ExpenseExampleYear05

460

rr_ExpenseExampleYear10

1,025

rr_ExpenseExampleNoRedemptionYear01

rr_ExpenseExampleNoRedemptionYear03

265

rr_ExpenseExampleNoRedemptionYear05

460

rr_ExpenseExampleNoRedemptionYear10

$ 1,025

rr_AverageAnnualReturnYear01

23.31%

rr_AverageAnnualReturnYear05

30.24%

rr_AverageAnnualReturnYear10

25.28%

Columbia Global Technology Growth Fund | returns after taxes on distributions | Class A

rr_AverageAnnualReturnInceptionDate

Mar. 01, 2016

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

14.66%

rr_AverageAnnualReturnYear05

27.23%

rr_AverageAnnualReturnYear10

23.41%

Columbia Global Technology Growth Fund | returns after taxes on distributions and sale of Fund shares | Class A

rr_AverageAnnualReturnInceptionDate

Nov. 01, 2002

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

10.11%

rr_AverageAnnualReturnYear05

23.14%

rr_AverageAnnualReturnYear10

20.84%

Columbia Global Technology Growth Fund | S&P Global 1200 Information Technology Index (Net) (reflects reinvested dividends net of withholding taxes but reflects no deductions for fees, expenses or other taxes)

rr_AverageAnnualReturnInceptionDate

Nov. 01, 2002

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

29.69%

rr_AverageAnnualReturnYear05

29.90%