Label

Element

Value

Risk/Return:

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Registrant Name

dei_EntityRegistrantName

TRANSAMERICA FUNDS

Prospectus Date

rr_ProspectusDate

Mar. 01, 2015

Retail Class | Transamerica Dividend Focused

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

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TRANSAMERICA DIVIDEND FOCUSED

Objective [Heading]

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Investment Objective:

Objective, Primary [Text Block]

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Seeks total return gained from the combination of dividend yield, growth of dividends and capital appreciation.

Expense [Heading]

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Fees and Expenses:

Expense Narrative [Text Block]

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This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Transamerica Funds. More information about these and other discounts is available from your financial professional and in the “Waivers and/or Reductions of Charges” section on page 339 of the fund’s prospectus and in the fund’s statement of additional information (SAI) under the heading “Purchase of Shares.”

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]

rr_PortfolioTurnoverHeading

Portfolio Turnover:

Portfolio Turnover [Text Block]

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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 21% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

21.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Transamerica Funds.

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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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 (unless otherwise indicated). 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:

Expense Example by, Year, Caption [Text]

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If the shares are redeemed at the end of each period:

Expense Example, No Redemption, By Year, Caption [Text]

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If the shares are not redeemed:

Strategy [Heading]

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Principal Investment Strategies:

Strategy Narrative [Text Block]

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The fund’s sub-adviser, Barrow, Hanley, Mewhinney & Strauss, LLC (the “sub-adviser”), deploys an active strategy that seeks large and middle capitalization U.S.-listed stocks, including American Depositary Receipts (“ADRs”), which make up a portfolio that generally exhibits the following value characteristics: price/earnings and price/book ratios at or below the market (S&P 500^®) and dividend yields at or above the market. In addition, the sub-adviser considers stocks for the fund that not only currently pay a dividend, but also have a consecutive 25-year history of paying cash dividends. The sub-adviser also seeks stocks that have long established histories of dividend increases in an effort to ensure that the growth of the dividend stream of the fund’s holdings will be greater than that of the market as a whole.

The sub-adviser utilizes a conservative orientation based on the belief that above-average returns can be achieved while taking below-average risks. The sub-adviser’s investment approach is based on an underlying philosophy that securities markets are inefficient and that these inefficiencies can be favorably exploited through adherence to a value-oriented investment process dedicated to individual stock selection on a bottom-up basis. Accordingly, the sub-adviser constructs a portfolio of individual stocks, selected on a bottom-up basis, using fundamental analysis. The sub-adviser seeks to identify companies that are undervalued and temporarily out-of-favor for reasons it can identify and understand. The sub-adviser does not attempt to time the market or rotate in and out of broad market sectors, as it believes that it is difficult, if not impossible, to add incremental value on a consistent basis by market timing.

The fund’s portfolio will generally consist of 35 to 45 stocks with position sizes of 1% to 5% (8% maximum position weighting). Annual portfolio turnover is anticipated to be less than 25%. If a stock held in the fund omits its dividend, the fund is not required to immediately sell the stock, but the fund will not purchase any stock that does not have a 25-year record of paying cash dividends.

The sub-adviser employs a fully invested strategy. Therefore, under normal market conditions, cash and cash equivalents are generally less than 5% of the fund’s assets.

Risk [Heading]

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Principal Risks:

Risk Narrative [Text Block]

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Risk is inherent in all investing. Many factors affect the fund's performance. There is no assurance the fund will meet its investment objective. The value of your investment in the fund, as well as the amount of return you receive on your investment, may fluctuate significantly. 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 fund may take temporary defensive positions; in such a case, the fund will not be pursuing its principal investment strategies. The following is a summary description of principal risks (in alphabetical order) of investing in the fund. You may lose money if you invest in this fund.

• 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. Currency conversion costs and currency fluctuations could reduce or eliminate investment gains or add to investment losses. Currency exchange rates can be volatile, 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.

• Depositary Receipts – Depositary receipts 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.

• 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. The price of equity securities fluctuates based on changes in a company’s financial condition 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.

• Focused Investing – To the extent the fund invests in one or more countries, regions, sectors or industries, or in a limited number of issuers, the fund will be more susceptible to negative events affecting those countries, regions, sectors, industries or issuers. Local events, such as political upheaval, financial troubles, or natural disasters may disrupt a country’s or region’s securities markets. Geographic risk is especially high in emerging markets.

• Foreign Investments – Investing in securities of foreign issuers or issuers with significant exposure to foreign markets involves additional risk. Foreign countries in which the fund may invest may have markets that are less liquid, less regulated and more volatile than U.S. markets. The value of the fund’s investments may decline because of factors affecting the particular issuer as well as foreign markets and issuers generally, such as unfavorable government actions, political or financial instability or other adverse economic or political developments. Lack of information and weaker accounting standards also may affect the value of these securities.

• Liquidity – The fund may make investments that are illiquid or that become illiquid after purchase. The liquidity and value of investments can deteriorate rapidly and those investments may be difficult or impossible to sell, particularly during times of market turmoil. These illiquid investments may also be difficult to value. 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.

• Manager – The fund is subject to the risk that the sub-adviser’s judgments and investment decisions, as well as the methods, tools, resources, information and data, and the analyses employed or relied on by the sub-adviser to make those judgments and decisions may be incorrect or otherwise may not produce the desired results. This could cause the fund to lose value or its results to lag relevant benchmarks or other funds with similar objectives.

• 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 real or perceived adverse economic or political conditions, inflation, changes in interest rates or currency rates, lack of liquidity in the markets or adverse investor sentiment. Adverse market conditions may be prolonged and may not have the same impact on all types of securities. Market prices of securities also may go down due to events or conditions that affect particular sectors, industries or issuers. When market prices fall, the value of your investment will go down. The fund may experience a substantial or complete loss on any individual security. Financial markets in the U.S., Europe and elsewhere have experienced increased volatility and decreased liquidity since the global financial crisis began in 2008. Governmental and non-governmental issuers defaulted on, or were forced to restructure, their debts. These market conditions may continue, worsen or spread. The U.S. government and the Federal Reserve, as well as certain foreign governments and their central banks have taken steps to support financial markets, including keeping interest rates at historically low levels. More recently, the Federal Reserve has reduced its market support activities. Further reduction or withdrawal of this support, or other related efforts in response to the crisis could negatively affect financial markets generally and increase market volatility as well as result in higher interest rates and reduce the value and liquidity of certain securities. This environment could make identifying investment risks and opportunities especially difficult for the sub-adviser. Whether or not the fund invests in securities of issuers located in or with significant exposure to countries experiencing economic and financial difficulties, the value and liquidity of the fund's investments may be negatively affected. In addition, policy and legislative changes in the United States and in other countries are affecting many aspects of financial regulation, and in some instances may contribute to decreased liquidity and increased volatility in the financial markets.

• Medium Capitalization Companies – The fund will be exposed to additional risks as a result of its investments in the securities of medium capitalization companies. Investing in medium capitalization companies involves greater risk than is customarily associated with more established companies. The prices of securities of medium capitalization companies generally are more volatile and are more likely to be adversely affected by changes in earnings results and investor expectations or poor economic or market conditions. Securities of medium capitalization companies may underperform larger capitalization companies, may be harder to sell at times and at prices the portfolio managers believe appropriate and may offer greater potential for losses.

• Portfolio Selection – The value of your investment may decrease if the sub-adviser’s judgment about the quality, relative yield, value or market trends affecting a particular security or issuer, industry, sector, region or market segment, or about the economy or interest rates is incorrect.

• 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.

• Value Investing – The prices of securities the sub-adviser believes are undervalued may not appreciate as anticipated or may go down. Value 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 “growth” stocks.

Risk Lose Money [Text]

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You may lose money if you invest in this fund.

Bar Chart and Performance Table [Heading]

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Performance:

Performance Narrative [Text Block]

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The bar chart and the table below provide some indication of the risks of investing in the fund. The bar chart shows the fund’s performance for the past calendar 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 bar chart does not reflect the impact of sales charges, which, if reflected, would lower the returns. The table includes deduction of applicable sales charges.Absent any limitation of the fund’s expenses, total returns would be lower. Index returns are since the inception of the oldest share class.

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/index.html or by calling 1-888-233-4339.

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 the fund’s performance for the past calendar 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 Availability Phone [Text]

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1-888-233-4339

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.transamerica.com/individual/products/mutual-funds/performance/index.html

Performance Past Does Not Indicate Future [Text]

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As with all mutual funds, past performance (before and after taxes) is not a prediction of future results.

Bar Chart [Heading]

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Annual Total Returns (calendar years ended December 31) - Class A

Bar Chart Does Not Reflect Sales Loads [Text]

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The bar chart does not reflect the impact of sales charges, which, if reflected, would lower the returns.

Bar Chart Closing [Text Block]

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	Quarter Ended	Return
Best Quarter:	03/31/2014	4.23%
Worst Quarter:	09/30/2014	0.85%

Performance Table Heading

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Average Annual Total Returns (periods ended December 31, 2014)

Performance Table Does Reflect Sales Loads

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The table includes deduction of applicable sales charges.

Performance Table Uses Highest Federal Rate

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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

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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 One Class of after Tax Shown [Text]

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After-tax returns are presented for only one class and returns for other classes will vary.

Performance Table Narrative

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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.After-tax returns are presented for only one class and returns for other classes will vary.

Retail Class | Transamerica Dividend Focused | A

Risk/Return:

rr_RiskReturnAbstract

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

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.50%

Maximum deferred sales charge (load) (as a percentage of purchase price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.64%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.07%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.96%

1 year

rr_ExpenseExampleYear01

643

3 years

rr_ExpenseExampleYear03

839

5 years

rr_ExpenseExampleYear05

1,052

10 years

rr_ExpenseExampleYear10

1,663

1 year

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643

3 years

rr_ExpenseExampleNoRedemptionYear03

839

5 years

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1,052

10 years

rr_ExpenseExampleNoRedemptionYear10

1,663

2014

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11.00%

Highest Quarterly Return, Label

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Best Quarter:

Highest Quarterly Return, Date

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Mar. 31, 2014

Highest Quarterly Return

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4.23%

Lowest Quarterly Return, Label

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Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2014

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

0.85%

1 Year

rr_AverageAnnualReturnYear01

11.00%

Since Inception

rr_AverageAnnualReturnSinceInception

19.03%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 04, 2013

Retail Class | Transamerica Dividend Focused | C

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

1.00%

Management fees

rr_ManagementFeesOverAssets

0.64%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.17%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.81%

1 year

rr_ExpenseExampleYear01

284

3 years

rr_ExpenseExampleYear03

569

5 years

rr_ExpenseExampleYear05

980

10 years

rr_ExpenseExampleYear10

2,127

1 year

rr_ExpenseExampleNoRedemptionYear01

184

3 years

rr_ExpenseExampleNoRedemptionYear03

569

5 years

rr_ExpenseExampleNoRedemptionYear05

980

10 years

rr_ExpenseExampleNoRedemptionYear10

2,127

1 Year

rr_AverageAnnualReturnYear01

10.03%

Since Inception

rr_AverageAnnualReturnSinceInception

18.10%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 04, 2013

Retail Class | Transamerica Dividend Focused | I

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

0.64%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.16%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.80%

1 year

rr_ExpenseExampleYear01

82

3 years

rr_ExpenseExampleYear03

255

5 years

rr_ExpenseExampleYear05

444

10 years

rr_ExpenseExampleYear10

990

1 year

rr_ExpenseExampleNoRedemptionYear01

82

3 years

rr_ExpenseExampleNoRedemptionYear03

255

5 years

rr_ExpenseExampleNoRedemptionYear05

444

10 years

rr_ExpenseExampleNoRedemptionYear10

990

1 Year

rr_AverageAnnualReturnYear01

11.20%

Since Inception

rr_AverageAnnualReturnSinceInception

19.25%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 04, 2013

Retail Class | Transamerica Dividend Focused | Return after taxes on distributions | A

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

9.51%

Since Inception

rr_AverageAnnualReturnSinceInception

17.82%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 04, 2013

Retail Class | Transamerica Dividend Focused | Return after taxes on distributions and sale of fund shares | A

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

6.97%

Since Inception

rr_AverageAnnualReturnSinceInception

14.53%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 04, 2013

Retail Class | Transamerica Dividend Focused | Russell 1000® Value Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.45%

Since Inception

rr_AverageAnnualReturnSinceInception

21.29%