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Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading AllianzGI Technology Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Fund seeks long-term capital appreciation.

Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The tables below describe 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): None
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). The Fund’s portfolio turnover rate for the fiscal year ended June 30, 2013 was 161%. High levels of portfolio turnover may indicate higher transaction costs and may result in higher taxes for you if your Fund shares are held in a taxable account. These costs, which are not reflected in Total Annual Fund Operating Expenses or in the Examples above, can adversely affect the Fund’s investment performance.

Portfolio Turnover, Rate rr_PortfolioTurnoverRate 161.00%
Expense Example [Heading] rr_ExpenseExampleHeading Examples.
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

 The Examples are intended to help you compare the cost of investing in shares of the Fund with the costs of investing in other mutual funds. The Examples assume that you invest $10,000 in the noted class of shares for the time periods indicated, your investment has a 5% return each year, and the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, the Examples show what your costs would be based on these assumptions.

Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Fund seeks to achieve its objective by normally investing at least 80% of its net assets (plus borrowings made for investment purposes) in common stocks and other equity securities of technology companies and in derivatives and other synthetic instruments that have economic characteristics similar to equity securities of technology companies. Derivatives transactions may have the effect of either magnifying or limiting the Fund’s gains and losses. The Fund normally will allocate its investments among securities of issuers located in at least three different countries and may invest up to 50% of its assets in non-U.S. securities, including emerging market securities. Under normal market and other conditions, the Fund will invest no more than 25% of its assets in any one country outside of the United States or Japan. The Fund intends to invest primarily in companies with market capitalizations greater than $500 million, with no more than 15% of its assets in technology companies with market capitalizations below $100 million. The Fund is “non-diversified,” which means that it may invest a significant portion of its assets in a relatively small number of issuers, which may increase risk. The portfolio managers define technology companies as those that provide technology products or services or utilize technology to gain competitive advantages. The portfolio managers evaluate fundamental value and growth prospects and focus on companies that they expect will have higher than average rates of growth and strong potential for capital appreciation. The portfolio managers develop forecasts of economic growth, inflation and interest rates that are used to help identify regions and countries that are likely to offer the best investment opportunities. In addition to common stocks and other equity securities (such as preferred stocks, convertible securities and warrants), the Fund may invest in securities issued in initial public offerings (IPOs) and may utilize foreign currency exchange contracts, options, futures and forward contracts, short sales, swap agreements and other derivative instruments. Although the Fund may invest in derivatives of any kind, it expects to invest in options, swaps and, to a lesser extent, foreign exchange contracts. The Fund may write call options on individual securities that it does not hold in its portfolio (i.e., “naked” call options) as well as call options on indices and exchange-traded funds. The Fund ordinarily expects to use derivative instruments in an attempt to enhance the Fund’s investment returns, to hedge against market and other risks or to obtain market exposure. The Fund may enter into credit default, cross-currency, interest rate, total return, variance and other forms of swap agreements in order to manage its exposure to credit, currency and interest rate risk.

Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The Fund seeks to achieve its objective by normally investing at least 80% of its net assets (plus borrowings made for investment purposes) in common stocks and other equity securities of technology companies and in derivatives and other synthetic instruments that have economic characteristics similar to equity securities of technology companies.
Risk [Heading] rr_RiskHeading Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

The principal risks of investing in the Fund, which could adversely affect its net asset value, yield and total return, are (in alphabetical order after the first six risks):


Market Risk: The Fund will be affected by factors influencing the U.S. or global economies and securities markets or relevant industries or sectors within them.


Issuer Risk: The Fund will be affected by factors specific to the issuers of securities and other instruments in which the Fund invests, including actual or perceived changes in the financial condition or business prospects of such issuers.


Equity Securities Risk: Equity securities may react more strongly to changes in an issuer’s financial condition or prospects than other securities of the same issuer.


Focused Investment Risk (Technology-Related Risk): Focusing on a limited number of issuers, sectors (such as the technology sectors), industries or geographic regions increases risk and volatility.


Derivatives Risk: Derivative instruments are complex, have different characteristics than their underlying assets and are subject to additional risks, including leverage, liquidity and valuation.


Smaller Company Risk: Securities issued by smaller companies may be more volatile and present increased liquidity risk relative to securities issued by larger companies.


Credit and Counterparty Risk: An issuer or counterparty may default on obligations.


Currency Risk: The values of non-U.S. securities may fluctuate with currency exchange rates and exposure to non-U.S. currencies may subject the Fund to the risk that those currencies will decline in value relative to the U.S. dollar.


Emerging Markets Risk: Non-U.S. investment risk may be particularly high to the extent that the Fund invests in emerging market securities. These securities may present market, credit, currency, liquidity, legal, political, technical and other risks different from, or greater than, the risks of investing in developed countries.


IPO Risk: Securities purchased in initial public offerings have no trading history, limited issuer information and increased volatility.


Leveraging Risk: Instruments and transactions that constitute leverage magnify gains or losses and increase volatility.


Liquidity Risk: The lack of an active market for investments may cause delay in disposition or force a sale below fair value.


Management Risk: The Fund will be affected by the allocation determinations, investment decisions and techniques of the Fund’s management.


Non-U.S. Investment Risk: Non-U.S. securities markets and issuers may be more volatile, smaller, less liquid, less transparent and subject to less oversight, particularly in emerging markets.


Short Selling Risk: Short selling enhances leveraging risk and involves counterparty risk and the risk of unlimited loss.


Turnover Risk: High levels of portfolio turnover increase transaction costs and taxes and may lower investment performance.


    Please see “Summary of Principal Risks” in the Fund’s prospectus for a more detailed description of the Fund’s risks. It is possible to lose money on an investment in the Fund. An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Risk Lose Money [Text] rr_RiskLoseMoney It is possible to lose money on an investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit of a bank 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 Information
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The performance information below provides some indication of the risks of investing in the Fund by showing changes in its total return from year to year and by comparing the Fund’s average annual total returns with those of a broad-based market index, a sector-specific index and a performance average of similar mutual funds. The bar chart and the information to its right show performance of the Fund’s Institutional Class shares. Class P, Administrative Class and Class D performance would be lower than Institutional Class performance because of the lower expenses paid by Institutional Class shares. For periods prior to the inception date of a share class, performance information shown for such class may be based on the performance of an older class of shares that dates back to the Fund’s inception, as adjusted to reflect certain fees and expenses paid by the newer class. Similarly, for periods prior to a reorganization of the Fund, in which a predecessor fund was merged into the Fund, the performance information is based on the performance of the predecessor fund, adjusted to reflect certain fees and expenses paid by the particular share class of the Fund. These adjustments generally result in estimated performance results that are higher or lower than the actual results of the predecessor class and/or the predecessor fund, as the case may be, due to differing levels of fees and expenses paid. Details regarding the calculation of the Fund’s class-by-class performance, including a discussion of any performance adjustments, are provided under “Additional Performance Information” in the Fund’s prospectus and SAI. Past performance, before and after taxes, is not necessarily predictive of future performance. Visit us.allianzgi.com for more current performance information.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The performance information below provides some indication of the risks of investing in the Fund by showing changes in its total return from year to year and by comparing the Fund's average annual total returns with those of a broad-based market index, a sector-specific index and a performance average of similar mutual funds.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress us.allianzgi.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Past performance, before and after taxes, is not necessarily predictive of future performance.
Bar Chart [Heading] rr_BarChartHeading Calendar Year Total Returns - Institutional Class
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
More Recent Return Information
1/1/13-6/30/13 13.77%
Highest and Lowest Quarter Returns
 (for periods shown in the bar chart)
Highest 04/01/2003-06/30/2003 37.05%
Lowest 10/01/2008-12/31/2008 -23.97%
Year to Date Return, Label rr_YearToDateReturnLabel More Recent Return Information
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Jun. 30, 2013
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 13.77%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2003
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 37.05%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (23.97%)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are estimated using the highest historical 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 depend on an investor's tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are for Institutional Class shares only. After-tax returns for other share classes will vary.
Performance Table Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock

    After-tax returns are estimated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. After-tax returns are for Institutional Class shares only. After-tax returns for other share classes will vary.

Caption rr_AverageAnnualReturnCaption Average Annual Total Returns (for periods ended 12/31/12)
NASDAQ Composite Index
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 15.91%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 2.63%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 8.50%
Average Annual Returns, Fund Inception rr_AverageAnnualReturnSinceInception 6.42%
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Dec. 27, 1995
S&P North American Technology Sector Index
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 15.23%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 3.54%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 9.40%
Average Annual Returns, Fund Inception rr_AverageAnnualReturnSinceInception 7.66%
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Dec. 27, 1995
Lipper Global Science & Technology Funds Average
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 13.23%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 2.51%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 10.77%
Average Annual Returns, Fund Inception rr_AverageAnnualReturnSinceInception 9.62%
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Dec. 27, 1995
Institutional
  
Risk/Return: rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 1.20%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.02%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.22%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 124
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 387
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 670
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,477
Annual Return 2003 rr_AnnualReturn2003 69.08%
Annual Return 2004 rr_AnnualReturn2004 17.93%
Annual Return 2005 rr_AnnualReturn2005 8.90%
Annual Return 2006 rr_AnnualReturn2006 4.98%
Annual Return 2007 rr_AnnualReturn2007 29.27%
Annual Return 2008 rr_AnnualReturn2008 (47.69%)
Annual Return 2009 rr_AnnualReturn2009 57.89%
Annual Return 2010 rr_AnnualReturn2010 28.80%
Annual Return 2011 rr_AnnualReturn2011 (10.12%)
Annual Return 2012 rr_AnnualReturn2012 12.39%
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 12.39%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 1.45%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 12.22%
Average Annual Returns, Fund Inception rr_AverageAnnualReturnSinceInception 12.32%
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Dec. 27, 1995
Institutional | After Taxes on Distributions
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 11.45%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 0.95%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 11.88%
Average Annual Returns, Fund Inception rr_AverageAnnualReturnSinceInception 11.61%
Institutional | After Taxes on Distributions and Sale of Fund Shares
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 9.30%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 1.08%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 10.91%
Average Annual Returns, Fund Inception rr_AverageAnnualReturnSinceInception 10.91%
P
  
Risk/Return: rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 1.30%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.02%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.32%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 134
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 418
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 723
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,590
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 12.28%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 1.34%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 12.10%
Average Annual Returns, Fund Inception rr_AverageAnnualReturnSinceInception 12.21%
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Dec. 27, 1995
Administrative
  
Risk/Return: rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 1.20%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.02%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.47%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 150
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 465
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 803
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,757
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 12.11%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 1.20%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 11.94%
Average Annual Returns, Fund Inception rr_AverageAnnualReturnSinceInception 12.04%
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Dec. 27, 1995
D
  
Risk/Return: rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 1.30%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.02%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.57%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 160
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 496
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 855
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,867
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 12.01%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 1.08%
Average Annual Returns, 10 Years rr_AverageAnnualReturnYear10 11.79%
Average Annual Returns, Fund Inception rr_AverageAnnualReturnSinceInception 11.94%
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Dec. 27, 1995