XML 106 R720.htm IDEA: XBRL DOCUMENT v3.20.1
Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName TRANSAMERICA FUNDS
Prospectus Date rr_ProspectusDate Mar. 01, 2020
Class R and Class R4 | Transamerica International Growth  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading Transamerica International Growth
Objective [Heading] rr_ObjectiveHeading Investment Objective:
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock Seeks long-term capital appreciation.
Expense [Heading] rr_ExpenseHeading Fees and Expenses:
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock This table describes the fees and expenses that you may pay if you buy and hold shares of the fund.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover:
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock The fund pays 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 portfolio turnover rate for the fund was 25% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 25.00%
Other Expenses, New Fund, Based on Estimates [Text] rr_OtherExpensesNewFundBasedOnEstimates Other expenses are based on estimates for the current fiscal year.
Expense Example [Heading] rr_ExpenseExampleHeading Example:
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock This Example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies:
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock The fund’s sub-adviser, TDAM USA Inc. (the “sub-adviser”), invests, under normal circumstances, at least 80% of the fund’s net assets (plus the amount of borrowings, if any, for investment purposes) in common stocks and related equity securities—such as preferred stock, convertible securities and depositary receipts—of issuers economically tied to a number of countries throughout the world, including emerging market countries. In selecting investments for the fund, the sub-adviser seeks companies that have demonstrated superior earnings growth, positive business momentum and sustainable profitability while seeking not to overpay for these growth characteristics. The sub-adviser may invest the fund’s assets in companies of any size. The fund may also invest in warrants and rights.

The sub-adviser may invest a large percentage of the fund’s assets in issuers in a single country, a small number of countries, or a particular geographic region. The sub-adviser will normally invest the fund’s assets in investments economically tied to at least three countries not including the United States. The issuer of a security or other investment is generally deemed to be economically tied to a particular country if (a) the security or other investment is issued or guaranteed by the government of that country or any of its agencies, authorities or instrumentalities; (b) the issuer is organized under the laws of, and maintains a principal office in, that country; (c) the issuer has its principal securities trading market in that country; (d) the issuer derives 50% or more of its total revenues from goods sold or services performed in that country; (e) the issuer has 50% or more of its assets in that country; or (f) the issuer is included in an index which is representative of that country.

The sub-adviser normally allocates the fund's investments across different industries and sectors, but the sub-adviser may invest a significant percentage of the fund's assets in issuers in a single or small number of industries or sectors.

The sub-adviser uses a “bottom-up” investment approach to buying and selling investments for the fund. A “bottom-up” approach is looking at individual companies against the context of broader market factors. Investments are selected primarily based on fundamental analysis of individual issuers and their potential in light of their financial condition, and market, economic, political, and regulatory conditions. Factors considered may include analysis of an issuer’s earnings, cash flows, competitive position, and management ability. The sub-adviser uses a quantitative screen to seek to identify companies with growth characteristics, positive earnings sentiment, stable profitability and reasonable valuations. The sub-adviser may engage in active and frequent trading in pursuing the fund’s principal investment strategies.

The fund may invest up to 5% of its assets in China A-shares (equity securities of Chinese companies) listed and traded on Chinese stock exchanges such as the Shanghai Stock Exchange or the Shenzhen Stock Exchange.
Risk [Heading] rr_RiskHeading Principal Risks:
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock Risk is inherent in all investing. Many factors and risks affect the fund's performance, including those described below. The value of your investment in the fund, as well as the amount of return you receive on your investment, may fluctuate significantly day to day and over time. You may lose part or all of your investment in the fund or your investment may not perform as well as other similar investments. The following is a summary description of principal risks (in alphabetical order after certain key risks) of investing in the fund. 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. You may lose money if you invest in this fund.

Market – The market prices of the fund's securities may go up or down, sometimes rapidly or unpredictably, due to general market conditions, such as overall economic trends or events, government actions or interventions, market disruptions caused by trade disputes or other factors, political factors or adverse investor sentiment. The market prices of securities also may go down due to events or conditions that affect particular sectors, industries or issuers. Adverse market conditions may be prolonged and may not have the same impact on all types of securities. If the market prices of the securities owned by the fund fall, the value of your investment will go down. The fund may experience a substantial or complete loss on any individual security.

Economies and financial markets throughout the world are increasingly interconnected. Economic, financial or political events, trading and tariff arrangements, terrorism, technology and data interruptions, natural disasters and other circumstances in one country or region could be highly disruptive to, and have profound impacts on, global economies or markets. During periods of market disruption, the fund's exposure to the risks described elsewhere in this summary will likely increase. As a result, whether or not the fund invests in securities of issuers located in or with significant exposure to the countries directly affected, the value and liquidity of the fund's investments may be negatively affected.

Growth Stocks – Returns on growth stocks may not move in tandem with returns on other categories of stocks or the market as a whole. Growth stocks typically are particularly sensitive to market movements and may involve larger price swings because their market prices tend to reflect future expectations. When it appears those expectations may not be met, the prices of growth securities typically fall. Growth stocks as a group may be out of favor and underperform the overall equity market for a long period of time, for example, while the market favors “value” stocks.

Foreign Investments – Investing in securities of foreign issuers or issuers with significant exposure to foreign markets involves additional risks. Foreign markets can be less liquid, less regulated, less transparent and more volatile than U.S. markets. The value of the fund’s foreign investments may decline because of factors affecting the particular issuer as well as foreign markets and issuers generally, such as unfavorable or unsuccessful government actions, reduction of government or central bank support, tariffs and trade disruptions, political or financial instability, social unrest or other adverse economic or political developments. Lack of information and weaker legal systems and accounting standards also may affect the value of these securities. Foreign investments may have lower liquidity and be more difficult to value than investments in U.S. issuers.

Focused Investing – To the extent the fund invests in a limited number of countries, regions, sectors, industries or market segments, in a limited number of issuers, or in issuers in related businesses or that are subject to related operating risks, the fund will be more susceptible to negative events affecting those countries, regions, sectors, industries, segments or issuers, and the value of its shares may be more volatile than if it invested more widely. Local events, such as political upheaval, social unrest, wars and terror attacks, financial troubles, pandemics, epidemics and natural disasters may disrupt a country’s or region’s securities markets. Geographic risk is especially high in emerging and frontier markets.

Equity Securities – Equity securities represent an ownership interest in an issuer, rank junior in a company’s capital structure and consequently may entail greater risk of loss than debt securities. Equity securities include common and preferred stocks. Stock markets are volatile and the value of equity securities may go up or down sometimes rapidly and unpredictably. Equity securities may have greater price volatility than other asset classes, such as fixed income securities. The value of equity securities fluctuates based on changes in a company’s financial condition, factors affecting a particular industry or industries, and overall market and economic conditions. If the market prices of the equity securities owned by the fund fall, the value of your investment in the fund will decline. If the fund holds equity securities in a company that becomes insolvent, the fund’s interests in the company will rank junior in priority to the interests of debtholders and general creditors of the company, and the fund may lose its entire investment in the company.

Small and Medium Capitalization Companies – The fund will be exposed to additional risks as a result of its investments in the securities of small or medium capitalization companies. Small or medium capitalization companies may be more at risk than large capitalization companies because, among other things, they may have limited product lines, operating history, market or financial resources, or because they may depend on a limited management group. The prices of securities of small and medium capitalization companies generally are more volatile than those of large capitalization companies and are more likely to be adversely affected than large capitalization companies by changes in earnings results and investor expectations or poor economic or market conditions. Securities of small and medium capitalization companies may underperform large capitalization companies, may be harder to sell at times and at prices the portfolio managers believe appropriate and may offer greater potential for losses.

Emerging Markets – Investments in the securities of issuers located in or principally doing business in emerging markets are subject to heightened foreign investments risks. Emerging market countries tend to have economic, political and legal systems and regulatory and accounting standards that are less developed, and that can be expected to be less stable. For example, the economies of such countries can be subject to rapid and unpredictable rates of inflation or deflation, and may be based on only a few industries. Emerging market countries may have policies that restrict investment by foreigners or that prevent foreign investors such as the fund from withdrawing their money at will. Emerging market securities are often particularly sensitive to market movements because their market prices tend to reflect speculative expectations. Low trading volumes may result in a lack of liquidity and extreme price volatility. An investment in emerging market securities should be considered speculative.

Management – The value of your investment may go down if the investment manager’s or sub-adviser's judgments and decisions are incorrect or otherwise do not produce the desired results. You may also suffer losses if there are imperfections, errors or limitations in the quantitative, analytic or other tools, resources, information and data used, investment techniques applied, or the analyses employed or relied on, by the investment manager or sub-adviser, if such tools, resources, information or data are used incorrectly or otherwise do not work as intended, or if the investment manager’s or sub-adviser's investment style is out of favor or otherwise fails to produce the desired results. The fund’s investment strategies may not work as intended or otherwise fail to produce the desired results. Any of these things could cause the fund to lose value or its results to lag relevant benchmarks or other funds with similar objectives.

Active Trading – The fund may purchase and sell securities without regard to the length of time held. Active trading may have a negative impact on performance by increasing transaction costs and may generate greater amounts of net short-term capital gains, which, for shareholders holding shares in taxable accounts, would generally be subject to tax at ordinary income tax rates upon distribution. During periods of market volatility, active trading may be more pronounced.

China A–Shares – The fund may invest in equity securities of certain Chinese companies, referred to as China A-shares, through the Shanghai-Hong Kong Stock Connect program or the Shenzhen-Hong Kong Stock Connect program (collectively, the “Programs”). The Programs are securities trading and clearing linked programs between either the Shanghai Stock Exchange or Shenzhen Stock Exchange, and the Stock Exchange of Hong Kong Limited, Hong Kong Securities Clearing Company Limited, and China Securities Depository and Clearing Corporation Limited, with an aim to achieve mutual stock market access between the People’s Republic of China (“China”) and Hong Kong. The Programs are subject to daily quota limitations, which may restrict the fund’s ability to invest in China A-shares through the Programs and to enter into or exit trades on a timely basis. The Shanghai and Shenzhen markets may be open at a time when the Programs are not trading, with the result that prices of China A-shares may fluctuate at times when the fund is unable to add to or exit its position. Only certain China A-shares are eligible to be accessed through the Programs. Such securities may lose their eligibility at any time, in which case they could be sold but could no longer be purchased through the Programs. Because the Programs are in their early stages, the actual effect on the market for trading China A-shares with the introduction of large numbers of foreign investors is currently unknown. The Programs are subject to regulations promulgated by regulatory authorities for the Shanghai Stock Exchange, the Stock Exchange of Hong Kong Limited and the Shenzhen Stock Exchange, and existing and additional regulations or restrictions, such as limitations on redemptions, suspension of trading and limitations on profits, may adversely impact the Programs and/or the fund’s investments through the Programs. There is no guarantee that all three exchanges will continue to support the Programs in the future.

Investments in China A-shares are subject to risks specific to the China market. Any significant change in mainland China’s political, social or economic policies may have a negative impact on investments in the China market. The regulatory and legal framework for capital markets in mainland China may not be as well developed as those of developed countries. Chinese accounting standards and practices may deviate significantly from international accounting standards. The settlement and clearing systems of the Chinese securities markets may not be well tested and may be subject to increased risks of error or inefficiency.

In addition, uncertainties in China tax rules governing taxation of income and gains from investments in China A-Shares via the Programs could result in unexpected tax liabilities for a fund and therefore could affect the amount of income which may be derived, and the amount of capital returned, from the investments in China A-shares by the fund.

Convertible Securities – Convertible securities are subject to risks associated with both fixed income and equity securities. When the underlying common stock falls in value, the market price of the convertible security may be more influenced by the security’s yield and fixed income characteristics. When the underlying common stock rises in value, the market price may be more influenced by the equity conversion features. Since the convertible security derives its value from the underlying common stock, the security is also subject to the same types of market and issuer-specific risks that apply to the underlying common stock. Convertible securities generally offer lower interest or dividend yields than non-convertible securities of similar quality.

Currency – The value of investments in securities denominated in foreign currencies increases or decreases as the rates of exchange between those currencies and the U.S. dollar change. U.S. dollar-denominated securities of foreign issuers may also be affected by currency risk, as the revenue earned by issuers of these securities may also be impacted by changes in the issuer’s local currency. Currency conversion costs and currency fluctuations could reduce or eliminate investment gains or add to investment losses. Currency exchange rates can be volatile and may fluctuate significantly over short periods of time, and are affected by factors such as general economic conditions, the actions of the U.S. and foreign governments or central banks, the imposition of currency controls, and speculation. A fund may be unable or may choose not to hedge its foreign currency exposure.

Depositary Receipts – Depositary receipts are generally subject to the same risks that the foreign securities that they evidence or into which they may be converted are, and they may be less liquid than the underlying shares in their primary trading market. Any distributions paid to the holders of depositary receipts are usually subject to a fee charged by the depositary. Holders of depositary receipts may have limited voting rights, and investment restrictions in certain countries may adversely impact the value of depositary receipts because such restrictions may limit the ability to convert equity shares into depositary receipts and vice versa. Such restrictions may cause equity shares of the underlying issuer to trade at a discount or premium to the market price of the depositary receipts.

Investments by Affiliated Funds and Unaffiliated Funds – A significant portion of the fund’s shares may be owned by other funds sponsored by Transamerica and/or parties not affiliated with Transamerica. Transactions by these funds may be disruptive to the management of the fund. For example, the fund may experience large redemptions and could be required to sell securities at a time when it may not otherwise desire to do so. Such transactions may increase the fund’s brokerage and/or other transaction costs and could also accelerate the realization of taxable capital gains in the fund. In addition, sizeable redemptions could cause the fund’s total expenses to increase.

Large Capitalization Companies – The fund’s investments in large capitalization companies may underperform other segments of the market because they may be less responsive to competitive challenges and opportunities and unable to attain high growth rates during periods of economic expansion. As a result, the fund’s value may not rise as much as, or may fall more than, the value of funds that focus on companies with smaller market capitalizations.

Liquidity – The fund may make investments that are illiquid or that become illiquid after purchase. Illiquid investments can be difficult to value, may trade at a discount from comparable, more liquid investments, and may be subject to wide fluctuations in value. As a general matter, a reduction in the willingness or ability of dealers and other institutional investors to make markets in fixed income securities may result in even less liquidity in certain markets. If the fund is forced to sell an illiquid investment to meet redemption requests or other cash needs, the fund may be forced to sell at a loss. The fund may not receive its proceeds from the sale of less liquid or illiquid securities for an extended period (for example, several weeks or even longer), and such sale may involve additional costs. Liquidity of particular investments, or even an entire market segment, can deteriorate rapidly, particularly during times of market turmoil, and those investments may be difficult or impossible for the fund to sell. This may prevent the fund from limiting losses.

Preferred Stock – Preferred stock’s right to dividends and liquidation proceeds is junior to the rights of a company’s debt securities. The value of preferred stock may be subject to factors that affect fixed income and equity securities, including changes in interest rates and in a company’s creditworthiness. The value of preferred stock tends to vary more with fluctuations in the underlying common stock and less with fluctuations in interest rates and tends to exhibit greater volatility. Shareholders of preferred stock may suffer a loss of value if dividends are not paid and have limited voting rights.

Valuation – The sales price the fund could receive for any particular portfolio investment may differ from the fund's valuation of the investment, particularly for securities that trade in thin or volatile markets, that are priced based upon valuations provided by third-party pricing services that use matrix or evaluated pricing systems, or that are valued using a fair value methodology. Investors who purchase or redeem fund shares on days when the fund is holding fair-valued securities may receive fewer or more shares or lower or higher redemption proceeds than they would have received if the fund had not fair-valued securities or had used a different valuation methodology. The fund's ability to value its investments may be impacted by technological issues and/or errors by pricing services or other third party service providers.

Warrants and Rights – Warrants and rights may be considered more speculative than certain other types of investments because they do not entitle a holder to the dividends or voting rights for the securities that may be purchased, and they do not represent any rights in the assets of the issuing company. If the warrant is not exercised before the expiration date, it generally expires without any value and the fund will lose any amount it paid for the warrant.
Risk Lose Money [Text] rr_RiskLoseMoney You may lose money if you invest in this fund.
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] rr_BarChartAndPerformanceTableHeading Performance:
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock The bar chart and the table below provide some indication of the risks of investing in the fund. The bar chart shows how the fund’s performance has varied from year to year. The table shows how the fund’s average annual total returns for different periods compare to the returns of a broad measure of market performance.

The past performance information shown below is for Class I2 shares, which are offered in a separate prospectus. Although Class R and Class R4 shares would have similar annual returns to Class I2 shares because the classes are invested in the same portfolio of securities, the returns for Class R and Class R4 shares will vary from Class I2 shares because Class I2 shares have lower expenses. Performance information for Class R and Class R4 shares will be included after the share classes have been in operation for one complete calendar year.

As with all mutual funds, past performance (before and after taxes) is not a prediction of future results. Updated performance information is available on our website at www.transamerica.com/individual/products/mutual-funds/performance/ or by calling 1-888-233-4339.

Prior to March 1, 2018, the fund was named Transamerica International Equity Opportunities, had a different sub-adviser, a different investment objective and used different investment strategies. The performance set forth prior to that date is attributable to the previous sub-adviser.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and the table below provide some indication of the risks of investing in the fund. The bar chart shows how the fund’s performance has varied from year to year. The table shows how the fund’s average annual total returns for different periods compare to the returns of a broad measure of market performance.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess Performance information for Class R and Class R4 shares will be included after the share classes have been in operation for one complete calendar year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 1-888-233-4339
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.transamerica.com/individual/products/mutual-funds/performance/
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture As with all mutual funds, past performance (before and after taxes) is not a prediction of future results.
Bar Chart [Heading] rr_BarChartHeading Annual Total Returns (calendar years ended December 31) - Class I2
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
  Quarter Ended Return
Best Quarter: 9/30/2010 16.22%
Worst Quarter: 9/30/2011 -20.57%
Bar Chart, Returns for Class Not Offered in Prospectus [Text] rr_BarChartReturnsForClassNotOfferedInProspectus The past performance information shown below is for Class I2 shares, which are offered in a separate prospectus. Although Class R and Class R4 shares would have similar annual returns to Class I2 shares because the classes are invested in the same portfolio of securities, the returns for Class R and Class R4 shares will vary from Class I2 shares because Class I2 shares have lower expenses.
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns (periods ended December 31, 2019)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate The after-tax returns are calculated using the historic highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Actual after-tax returns may depend on the investor’s individual tax situation and may differ from those shown. After-tax returns may not be relevant if the investment is made through a tax-exempt or tax-deferred account, such as a 401(k) plan.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock The after-tax returns are calculated using the historic highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns may depend on the investor’s individual tax situation and may differ from those shown. After-tax returns may not be relevant if the investment is made through a tax-exempt or tax-deferred account, such as a 401(k) plan.
Class R and Class R4 | Transamerica International Growth | R  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of purchase price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOther none
Management fees rr_ManagementFeesOverAssets 0.76%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other expenses rr_OtherExpensesOverAssets 0.04% [1]
Total annual fund operating expenses rr_ExpensesOverAssets 1.30%
1 year rr_ExpenseExampleYear01 $ 132
3 years rr_ExpenseExampleYear03 412
5 years rr_ExpenseExampleYear05 713
10 years rr_ExpenseExampleYear10 $ 1,568
Class R and Class R4 | Transamerica International Growth | R4  
Risk/Return: rr_RiskReturnAbstract  
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) (as a percentage of purchase price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOther none
Management fees rr_ManagementFeesOverAssets 0.76%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.05% [1]
Total annual fund operating expenses rr_ExpensesOverAssets 1.06%
1 year rr_ExpenseExampleYear01 $ 108
3 years rr_ExpenseExampleYear03 337
5 years rr_ExpenseExampleYear05 585
10 years rr_ExpenseExampleYear10 $ 1,294
Class R and Class R4 | Transamerica International Growth | Class I2  
Risk/Return: rr_RiskReturnAbstract  
2010 rr_AnnualReturn2010 10.55%
2011 rr_AnnualReturn2011 (10.13%)
2012 rr_AnnualReturn2012 22.21%
2013 rr_AnnualReturn2013 18.06%
2014 rr_AnnualReturn2014 (4.70%)
2015 rr_AnnualReturn2015 (0.56%)
2016 rr_AnnualReturn2016 0.14%
2017 rr_AnnualReturn2017 27.58%
2018 rr_AnnualReturn2018 (17.86%)
2019 rr_AnnualReturn2019 27.69%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter:
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Sep. 30, 2010
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 16.22%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter:
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (20.57%)
1 Year rr_AverageAnnualReturnYear01 27.69%
5 Years rr_AverageAnnualReturnYear05 5.91%
10 Years rr_AverageAnnualReturnYear10 6.17%
Inception Date rr_AverageAnnualReturnInceptionDate Jun. 10, 2008
Class R and Class R4 | Transamerica International Growth | Return after taxes on distributions | Class I2  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 27.29%
5 Years rr_AverageAnnualReturnYear05 4.76%
10 Years rr_AverageAnnualReturnYear10 4.78%
Inception Date rr_AverageAnnualReturnInceptionDate Jun. 10, 2008
Class R and Class R4 | Transamerica International Growth | Return after taxes on distributions and sale of fund shares | Class I2  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 16.98%
5 Years rr_AverageAnnualReturnYear05 4.53%
10 Years rr_AverageAnnualReturnYear10 4.80%
Inception Date rr_AverageAnnualReturnInceptionDate Jun. 10, 2008
Class R and Class R4 | Transamerica International Growth | MSCI EAFE Index (reflects no deduction for fees, expenses or taxes)  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 22.66%
5 Years rr_AverageAnnualReturnYear05 6.18%
10 Years rr_AverageAnnualReturnYear10 6.00%
[1] Other expenses are based on estimates for the current fiscal year.