Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

TRANSAMERICA FUNDS

Prospectus Date

rr_ProspectusDate

Mar. 01, 2015

Retail Class | Transamerica Floating Rate

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

TRANSAMERICA FLOATING RATE

Objective [Heading]

rr_ObjectiveHeading

Investment Objective:

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

Seeks to achieve a high level of current income

Objective, Secondary [Text Block]

rr_ObjectiveSecondaryTextBlock

with capital appreciation as a secondary objective.

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. 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]

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)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

March 1, 2016

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 73% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

73.00%

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

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Total annual fund operating expenses do not correlate to the ratios of expenses to average net assets in the financial highlights table, which do not include acquired (i.e., underlying) funds’ fees and expenses and do not reflect the reduction of 0.05% in the distribution and services (12b-1) fees on Class A shares effective March 1, 2014 for an entire 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 (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]

rr_ExpenseExampleByYearCaption

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

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

rr_ExpenseExampleNoRedemptionByYearCaption

If the shares are not redeemed:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances the fund’s sub-adviser, Aegon USA Investment Management, LLC (the “sub-adviser”) seeks to achieve the fund’s objective by investing at least 80% of its net assets (plus the amount of borrowings, if any, for investment purposes) in floating rate loans and floating rate debt securities. Floating rate loans have interest rates that reset periodically, typically quarterly or monthly. Interest rates on floating rate loans are generally based off the London Interbank Offered Rate (“LIBOR”) plus a premium, but certain leveraged loans can use different base rates. Floating rate loans represent amounts borrowed by companies or other entities, the debt securities of which are usually rated below investment grade, from banks and other lenders. In many cases, they are issued in connection with recapitalizations, acquisitions, leveraged buyouts, and refinancings. Certain loans in which the fund invests are referred to as “leveraged loans” because the borrowing companies have significantly more debt than equity.

The sub-adviser selects investments based on fundamentals, sentiment and positioning, technicals and valuations. Analysis covers all aspects of the investment including underlying credit, capital structure, collateral and covenants. Comprehensive understanding of the entire competitive landscape supports strategic positioning of a credit, and allows for more effective measurement of up and downside scenarios. Individual credits are analyzed as both an independent holding and at the portfolio level. An overlay of top-down economic, business cycle and sector trend analysis is applied to investment candidates.

The fund will primarily invest in first lien, senior secured term loans (“senior loans”) to corporate issuers, partnerships and other entities. The fund can invest in senior loans of any maturity and quality. The majority of the fund’s assets will be invested in below-investment grade loans and “high-yield” securities (commonly known as “junk bonds”) and the fund may invest without limitation in such loans and securities. The issuers of the loans in which the fund invests may themselves be rated below investment grade. To a lesser extent the fund will invest in unsecured senior loans, unsecured floating rate notes, second lien loans and subordinated bridge loans (“junior loans”), unsecured fixed rate high yield bonds, other floating rate debt securities, fixed income debt obligations, money market instruments, and other debt securities, including distressed securities that may be in default and have any or no credit rating. The fund can invest up to 15% of its assets in loans and securities that are not secured by any specific collateral. The fund can invest up to 15% in unsecured fixed rate high-yield bonds and 15% in second lien loans. The fund may invest in loans of foreign-domiciled borrowers and foreign debt securities, including emerging market debt securities, but expects that the majority of assets in which it invests will be invested in loans and securities of U.S. borrowers or issuers. The fund may invest in derivatives such as futures, forwards, and options for a variety of purposes, including as a means to manage fixed income exposure and to increase the fund’s return as a non-hedging strategy that may be considered speculative. The fund can invest in leverage loan exchange traded funds (“ETF”) to create exposure to the asset class.

Risk [Heading]

rr_RiskHeading

Principal Risks:

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

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.

• Active Trading – The fund is actively managed and 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 be subject to tax at ordinary income tax rates upon distribution.

• Counterparty – The fund will be subject to credit risk (that is, where changes in an issuer's financial strength or credit rating may affect an instrument's value) with respect to the amount it expects to receive from counterparties to derivatives, repurchase agreements and other financial contracts entered into by the fund or held by special purpose or structured vehicles. If a counterparty becomes bankrupt or otherwise fails to perform its obligations due to financial difficulties, the value of your investment in the fund may decline.

• Credit – If an issuer or other obligor (such as a party providing insurance or other credit enhancement) of a security held by the fund or a counterparty to a financial contract with the fund defaults or is downgraded, or is perceived to be less creditworthy, or if the value of any underlying assets declines, the value of your investment will typically decline. Below investment grade, high-yield debt securities (commonly known as "junk bonds") have a higher risk of default and are considered speculative. Subordinated securities are more likely to suffer a credit loss than non-subordinated securities of the same issuer and will be disproportionately affected by a default, downgrade or perceived decline in creditworthiness.

• 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.

• Derivatives – Using derivatives exposes the fund to additional risks and can increase fund losses and reduce opportunities for gains when market prices, interest rates or the derivatives themselves behave in a way not anticipated by the fund. Using derivatives also can have a leveraging effect and increase fund volatility. The fund may also have to sell assets at inopportune times to satisfy its obligations. Derivatives may be difficult to sell, unwind or value, and the counterparty may default on its obligations to the fund. The fund's investments in derivative instruments may involve a small investment relative to the amount of investment exposure assumed and may result in losses exceeding the amounts invested in those instruments. Certain derivatives have the potential for unlimited loss, regardless of the size of the initial investment. The U.S. government is in the process of adopting and implementing regulations governing derivatives markets, including mandatory clearing of certain derivatives, margin and reporting requirements. The ultimate impact of the regulations remains unclear. Additional regulation of derivatives may make them more costly, may limit their availability, may disrupt markets or may otherwise adversely affect their value or performance.

• Distressed or Defaulted Securities – Investments in defaulted securities and obligations of distressed issuers, including securities that are, or may be, involved in reorganizations or other financial restructurings, either out of court or in bankruptcy, involve substantial risks and are considered speculative. The fund may suffer significant losses if the reorganization or restructuring is not completed as anticipated. The fund will generally not receive interest payments on the distressed securities and may incur costs to protect its investment. Repayment of defaulted securities and obligations of distressed issuers is subject to significant uncertainties.

• Emerging Markets – Investments in the securities of issuers located in or principally doing business in emerging markets are subject to foreign investments risks. These risks are greater for investments in issuers in emerging market countries. Emerging market countries tend to have economic, political and legal systems that are less fully developed and are less stable than those of more developed countries. 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 in extreme price volatility.

• Exchange Traded Funds (ETFs) – Fixed income-based ETFs are subject to risks similar to those of fixed-income securities. ETF shares may trade at a premium or discount to net asset value. ETFs are subject to secondary market trading risks. In addition, a fund will bear a pro rata portion of the operating expenses of an ETF in which it invests.

• Extension – When interest rates rise, repayments of fixed income securities, particularly asset- and mortgage-backed securities, may occur more slowly than anticipated, extending the effective duration of these fixed income securities at below market interest rates and causing their market prices to decline more than they would have declined due to the rise in interest rates alone. This may cause the fund's share price to be more volatile.

• Fixed-Income Securities – The market prices of fixed-income securities may go up or down, sometimes rapidly and unpredictably, due to general market conditions, such as real or perceived adverse economic or political conditions, inflation, changes in interest rates, lack of liquidity in the bond markets or adverse investor sentiment. In addition, the market value of a fixed income security may decline if the issuer or other obligor of the security fails to pay principal and/or interest, otherwise defaults or has its credit rating downgraded or is perceived to be less creditworthy, or the credit quality or value of any underlying assets declines. When market prices fall, the value of your investment will go down. The value of your investment will generally go down when interest rates rise. Interest rates have been at historically low levels, so the fund faces a heightened risk that interest rates may rise. A rise in rates tends to have a greater impact on the prices of longer term or duration securities.

• 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.

• High-Yield Debt Securities – High-yield debt securities, commonly referred to as "junk bonds," are securities that are rated below "investment grade" (that is, securities rated below Baa/BBB) or, if unrated, determined to be below investment grade by the sub-adviser. Changes in interest rates, the market's perception of the issuers and the creditworthiness of the issuers may significantly affect the value of these bonds. Junk bonds are considered speculative, have a higher risk of default, tend to be less liquid and may be more difficult to value than higher grade securities. Junk bonds tend to be volatile and more susceptible to adverse events and negative sentiments.

• Interest Rate – Interest rates in the U.S. have been at historically low levels, so the fund faces a heightened risk that interest rates may rise. The value of fixed income securities generally goes down when interest rates rise, and therefore the value of your investment in the fund may also go down. Debt securities have varying levels of sensitivity to changes in interest rates. A rise in rates tends to have a greater impact on the prices of longer term or duration securities.

• Junior Loans – Junior loans are subject to the same general risks inherent to any loan investment, including credit risk, market and liquidity risk and interest rate risk. Due to their lower place in the borrower's capital structure and possible unsecured status, junior loans involve a higher degree of overall risk than senior loans of the same borrower.

• Leveraging – The value of your investment may be more volatile to the extent that the fund borrows or uses derivatives or other investments that have a leveraging effect on the fund. Other risks also will be compounded. This is because leverage generally magnifies the effect of a change in the value of an asset and creates a risk of loss of value on a larger pool of assets than the fund would otherwise have had. The use of leverage is considered to be a speculative investment practice and may result in the loss of a substantial amount, and possibly all, of the fund's assets. The fund also may have to sell assets at inopportune times to satisfy its obligations.

• 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.

• Loans – Loans are subject to the credit risk of nonpayment of principal or interest. Economic downturns or increases in interest rates may cause an increase in defaults, interest rate risk and liquidity risk. Loans may or may not be collateralized at the time of acquisition, and any collateral may be relatively illiquid or lose all or substantially all of its value subsequent to investment. In the event of bankruptcy of a borrower, the fund could experience delays or limitations with respect to its ability to realize the benefits of any collateral securing a loan. Junior loans, which have a lower place in the borrower's capital structure than senior loans and may be unsecured, involve a higher degree of overall risk than senior loans of the same borrower. The fund's investments in loans are also subject to prepayment or call risk.

• 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.

• 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.

• Prepayment or Call – Many issuers have a right to prepay their securities. If interest rates fall, an issuer may exercise this right. If this happens, the fund will not benefit from the rise in market price that normally accompanies a decline in interest rates, and will be forced to reinvest prepayment proceeds at a time when yields on securities available in the market are lower than the yield on the prepaid security. The fund also may lose any premium it paid on the security.

• 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.

Risk Lose Money [Text]

rr_RiskLoseMoney

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]

rr_PerformanceNarrativeTextBlock

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]

rr_PerformanceAvailabilityPhone

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]

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 A

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

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	1.03%
Worst Quarter:	09/30/2014	-0.64%

Performance Table Heading

rr_PerformanceTableHeading

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

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

The table includes deduction of applicable sales charges.

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 One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

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

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

Retail Class | Transamerica Floating Rate | A

Risk/Return:

rr_RiskReturnAbstract

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

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

4.75%

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

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.61%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.34%

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.21%

^[1]

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.15%

^[2]

Total annual fund operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

1.06%

1 year

rr_ExpenseExampleYear01

578

3 years

rr_ExpenseExampleYear03

827

5 years

rr_ExpenseExampleYear05

1,095

10 years

rr_ExpenseExampleYear10

1,859

1 year

rr_ExpenseExampleNoRedemptionYear01

578

3 years

rr_ExpenseExampleNoRedemptionYear03

827

5 years

rr_ExpenseExampleNoRedemptionYear05

1,095

10 years

rr_ExpenseExampleNoRedemptionYear10

1,859

2014

rr_AnnualReturn2014

1.55%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2014

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

1.03%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2014

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(0.64%)

1 Year

rr_AverageAnnualReturnYear01

1.55%

Since Inception

rr_AverageAnnualReturnSinceInception

1.80%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 31, 2013

Retail Class | Transamerica Floating Rate | 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

0.61%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.36%

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.98%

^[1]

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.17%

^[2]

Total annual fund operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

1.81%

1 year

rr_ExpenseExampleYear01

284

3 years

rr_ExpenseExampleYear03

605

5 years

rr_ExpenseExampleYear05

1,052

10 years

rr_ExpenseExampleYear10

2,293

1 year

rr_ExpenseExampleNoRedemptionYear01

184

3 years

rr_ExpenseExampleNoRedemptionYear03

605

5 years

rr_ExpenseExampleNoRedemptionYear05

1,052

10 years

rr_ExpenseExampleNoRedemptionYear10

2,293

1 Year

rr_AverageAnnualReturnYear01

0.80%

Since Inception

rr_AverageAnnualReturnSinceInception

1.06%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 31, 2013

Retail Class | Transamerica Floating Rate | 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

0.61%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.36%

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.98%

^[1]

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.17%

^[2]

Total annual fund operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

0.81%

1 year

rr_ExpenseExampleYear01

83

3 years

rr_ExpenseExampleYear03

295

5 years

rr_ExpenseExampleYear05

525

10 years

rr_ExpenseExampleYear10

1,186

1 year

rr_ExpenseExampleNoRedemptionYear01

83

3 years

rr_ExpenseExampleNoRedemptionYear03

295

5 years

rr_ExpenseExampleNoRedemptionYear05

525

10 years

rr_ExpenseExampleNoRedemptionYear10

1,186

1 Year

rr_AverageAnnualReturnYear01

1.82%

Since Inception

rr_AverageAnnualReturnSinceInception

2.07%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 31, 2013

Retail Class | Transamerica Floating Rate | Return after taxes on distributions | A

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

0.04%

Since Inception

rr_AverageAnnualReturnSinceInception

0.41%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 31, 2013

Retail Class | Transamerica Floating Rate | Return after taxes on distributions and sale of fund shares | A

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

0.88%

Since Inception

rr_AverageAnnualReturnSinceInception

0.75%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 31, 2013

Retail Class | Transamerica Floating Rate | Credit Suisse Leveraged Loan Index (reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

2.06%

Since Inception

rr_AverageAnnualReturnSinceInception

2.64%

[1] Total annual fund operating expenses do not correlate to the ratios of expenses to average net assets in the financial highlights table, which do not include acquired (i.e., underlying) funds' fees and expenses and do not reflect the reduction of 0.05% in the distribution and services (12b-1) fees on Class A shares effective March 1, 2014 for an entire fiscal year.

[2] Contractual arrangements have been made with the fund's investment adviser, Transamerica Asset Management, Inc. ("TAM"), through March 1, 2016 to waive fees and/or reimburse fund expenses to the extent that the fund's total operating expenses exceed 0.80%, excluding, as applicable, 12b-1 fees, acquired fund fees and expenses, interest, taxes, brokerage commissions, dividend and interest expenses on securities sold short, extraordinary expenses and other expenses not incurred in the ordinary course of the fund's business. These arrangements cannot be terminated prior to March 1, 2016 without the Board of Trustees' consent. TAM is entitled to reimbursement by the fund of fees waived or expenses reduced during any of the previous 36 months if on any day or month the estimated annualized fund operating expenses are less than the cap.