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AZL Moderate Index Strategy Fund  
Risk/Return: rr_RiskReturnAbstract  
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   Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. The Fund is offered exclusively as an investment option for certain Contracts. The table below reflects only Fund expenses and does not reflect Contract fees and expenses. If Contract fees and expenses were included, the fees and expenses in the following table would be higher. Please refer to the Contract prospectus for a description of those fees and expenses.
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 Apr. 30, 2026
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. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 12% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 12.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees Because Acquired Fund Fees and Expenses are not included in the Fund’s Financial Highlights, the Fund’s total annual fund operating expenses do not correlate to the ratios of expenses to average net assets shown in the Financial Highlights table.
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. The example also assumes that your investment has a 5% return each year, that the Fund’s operating expenses remain the same, and that you reinvest all dividends and distributions. It does not reflect any Contract fees. It reflects the management fee waiver agreement for the first year. If Contract fees were included, the costs shown would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading  Investments, Risks, and Performance   Principal Investment Strategies of the Fund
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Fund is a fund of funds that seeks to achieve its investment objective by investing primarily in a combination of five underlying index funds:

 

Fund

Target Allocation
AZL Enhanced Bond Index Fund    40%
AZL S&P 500 Index Fund 37.5%
AZL International Index Fund 16.5%
AZL Mid Cap Index Fund   3.5%
AZL Small Cap Stock Index Fund   2.5%

 

The AZL Enhanced Bond Index Fund is a bond index fund, subadvised by BlackRock Financial Management, LLC; the other four underlying funds are equity index funds, subadvised by BlackRock Investment Management, LLC. Under normal market conditions, the Fund will allocate approximately 60% of its assets in the underlying equity index funds and approximately 40% of its assets in the underlying bond index fund. These target allocations represent the Fund’s long-term strategic asset allocation, which is not expected to change under normal market conditions.

 

The investment results of the underlying funds will vary. As a result, the Manager monitors the actual allocations to the underlying funds daily and periodically adjusts the actual allocations to attempt to achieve the target allocation. Generally, the Manager will seek to maintain the actual fund allocations to target using the cash flows that result from contract holders buying or selling shares in the Fund. However, if cash flows were insufficient to maintain the target allocations, the Manager would then buy or sell underlying funds as necessary to attempt to return the Fund’s actual asset allocations to the targets. Generally, the actual allocations will not be more than 10% above or below the targets.

 

The AZL Enhanced Bond Index Fund under normal circumstances invests in a combination of securities with an overall weighting close to the capitalization weights of the Bloomberg U.S. Aggregate Bond Index (the “Index”). Under normal market conditions, the Fund invests at least 80% of its net assets in investment-grade debt securities (those of medium and high quality) of all types and repurchase agreements for those securities. Further, under normal circumstances, the Fund invests at least 80% of the value of its net assets in securities or other financial instruments that are components of or have economic characteristics similar to the securities included in the Index. The subadviser of the AZL Enhanced Bond Index Fund uses the Index as a guide in structuring the Fund and selecting its investments and manages the Fund to have similar overall interest rate risk to the Index, with the investment objective of seeking to exceed the total return of the Index.

 

The AZL S&P 500 Index Fund under normal circumstances invests at least 80% of the value of its net assets in the securities of or in a statistically selected sampling of the securities of companies included in the S&P 500 Index or in derivative instruments linked to that Index.

 

The AZL Mid Cap Index Fund under normal circumstances invests at least 80% of the value of its net assets in a statistically selected sampling of equity securities of companies included in the S&P 400 Index and in derivative instruments linked to the S&P 400 Index, primarily futures contracts.

 

The AZL Small Cap Stock Index Fund under normal market conditions invests at least 80% of its assets, plus any borrowings for investment purposes, in investments of small-capitalization companies, which for this purpose are companies with market capitalizations (the total market value of a company’s outstanding stock) at the time of purchase included in the S&P SmallCap 600 Index.

 

The AZL International Index Fund under normal circumstances invests at least 80% of the value of its net assets in a statistically selected sampling of equity securities of companies included in the MSCI EAFE Index and in derivative instruments linked to the MSCI EAFE Index, primarily futures contracts.
Risk [Heading] rr_RiskHeading Principal Risks of Investing in the Fund
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Performance Information
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide an indication of the risks of an investment in the Fund by showing changes in its performance from year to year and by showing how the Fund’s average annual returns for one year, five years, and ten years compare with those of a broad-based measure of market performance, the S&P 500® Index. The Fund’s performance also is compared to the Bloomberg U.S. Aggregate Bond Index, which shows how the Fund’s performance compares with the returns of a broad index of investment-grade fixed-rate issues, and to a Moderate Composite Index, which shows how the Fund’s performance compares with a composite index composed of the S&P 500 Index (60%) and the Bloomberg U.S. Aggregate Bond Index (40%) in proportions similar to the equity to fixed income allocation of the Fund.

 

Both the bar chart and the table assume reinvestment of dividends and distributions.

 

The performance of the Fund will vary from year to year. The Fund’s performance does not reflect the cost of insurance and separate account charges which are imposed under your Contract. If they were included, performance would be reduced. Past performance does not indicate how the Fund will perform in the future.

 

Prior to October 14, 2016, the Fund was subadvised by Invesco Advisers, Inc., managed pursuant to different investment strategies, and known as the AZL Invesco Equity and Income Fund. Consequently, the performance information shown below for periods prior to October 14, 2016, reflects the Fund’s prior investment strategies and not its current investment strategies.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following bar chart and table provide an indication of the risks of an investment in the Fund by showing changes in its performance from year to year and by showing how the Fund’s average annual returns for one year, five years, and ten years compare with those of a broad-based measure of market performance, the S&P 500® Index.
Performance Additional Market Index [Text] rr_PerformanceAdditionalMarketIndex The Fund’s performance also is compared to the Bloomberg U.S. Aggregate Bond Index, which shows how the Fund’s performance compares with the returns of a broad index of investment-grade fixed-rate issues, and to a Moderate Composite Index, which shows how the Fund’s performance compares with a composite index composed of the S&P 500 Index (60%) and the Bloomberg U.S. Aggregate Bond Index (40%) in proportions similar to the equity to fixed income allocation of the Fund.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Past performance does not indicate how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Performance Bar Chart and Table   Calendar Year Total Return
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads The Fund’s performance does not reflect the cost of insurance and separate account charges which are imposed under your Contract. If they were included, performance would be reduced.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Highest and Lowest Quarter Returns (for periods shown in the bar chart)

 

 

Highest (Q2, 2020) 13.34%
Lowest (Q1, 2020) -13.36%
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes Reflects no deduction for fees, expenses, or taxes.
AZL Moderate Index Strategy Fund | Risk Not Insured Depository Institution [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
AZL Moderate Index Strategy Fund | Risk Lose Money [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock You may lose money by investing in the Fund.
AZL Moderate Index Strategy Fund | Allocation Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Allocation Risk – The Manager’s decisions regarding how the Fund’s assets should be allocated among the various underlying funds, may cause the Fund to underperform other funds with similar investment objectives. There can be no guarantee that investment decisions made by the Manager will produce the desired results. Further, because the Manager has limited discretion to change the overall asset allocation between equity funds and fixed income funds under normal market conditions, the Fund may underperform comparable funds of funds for which the fund’s manager has such discretion to adjust allocations to underlying funds.
AZL Moderate Index Strategy Fund | Fund of Funds Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Fund of Funds Risk – The Fund, as a shareholder of the underlying funds, indirectly bears its proportionate share of any investment management fees and other expenses of the underlying funds. Further, due to the fees and expenses paid by the Fund, as well as small variations in the Fund’s actual allocations to the underlying funds and any cash held in the Fund’s portfolio, the performance and income distributions of the Fund will not be the same as the performance and income distributions of the underlying funds allocated according to the target allocations described here.

 

In addition, the Fund bears the investment risks of the investments of the underlying funds. The principal risks associated with the underlying funds include:
AZL Moderate Index Strategy Fund | Market Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Market Risk – The market value of portfolio securities may go up or down, sometimes rapidly and unpredictably. The value of a security or other asset may fluctuate significantly due to factors such as changes in general market conditions, including economic, political, and financial conditions, widespread disease or other public health issues, war, military conflict, acts of terrorism, adverse investor sentiment, or instability or other disruptive events in the local, regional or global markets. Certain changes in the U.S. economy, such as a decrease in imports or exports, changes in trade regulations, inflation and/or economic recession, may have an adverse effect on the value of the Fund’s securities.
AZL Moderate Index Strategy Fund | Issuer Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Issuer Risk – The value of a security may decline for a number of reasons directly related to the issuer of the security. Further, the value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.
AZL Moderate Index Strategy Fund | Index Fund Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Index Fund Risk – The Underlying Funds do not attempt to manage market volatility or reduce the effects of poor performance. In addition, factors such as fund expenses, selection of a representative portfolio, changes in the composition of the index, or the timing of purchases or redemptions of fund shares may affect the correlation between the performance of the index and the fund’s performance.
AZL Moderate Index Strategy Fund | Selection Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Selection Risk – Because the AZL Enhanced Bond Index Fund is actively managed, there can be no guarantee that investment decisions made for the Fund will produce the desired results. Although the Fund seeks to provide a total return in excess of the Index, market conditions or implementation of the Fund’s investment strategy may result in losses, and the Fund may not achieve the desired correlation with and/or may not outperform the Index.
AZL Moderate Index Strategy Fund | Capitalization Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Capitalization Risk – Investing in small- to mid-sized companies creates risk because smaller companies may have unpredictable or limited earnings, and their securities may be less liquid or experience more volatile prices than those of large companies.
AZL Moderate Index Strategy Fund | Foreign Securities Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Foreign Securities Risk – Investing in the securities of non-U.S. issuers involves a number of risks, such as fluctuations in currency values, adverse political, social or economic developments, and differences in social and economic developments or policies.
AZL Moderate Index Strategy Fund | Emerging Markets Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Emerging Markets Risk – Emerging markets may have less developed or more volatile trading markets and greater likelihood of government restrictions, nationalization, or confiscation than developed countries. Companies in emerging market countries may have less developed legal and accounting systems and generally may be subject to less stringent regulatory, disclosure, financial reporting, accounting, auditing and recordkeeping standards than companies in more developed countries. As a result, information, including financial information, about such companies may be less available and reliable which can impede a fund’s ability to evaluate such companies. Securities law and the enforcement of systems of taxation in many emerging market countries may change quickly and unpredictably, and the ability to bring and enforce actions, or to obtain information needed to pursue or enforce such actions, may be limited. In addition, investments in emerging markets securities may be subject to additional transaction costs, delays in settlement procedures, unexpected market closures, and lack of timely information. Frontier market countries generally have smaller economies or less developed capital markets and, as a result, the risks of investing in emerging market countries are magnified in frontier market countries.
AZL Moderate Index Strategy Fund | Risks of Investing in Japan [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Risks of Investing in Japan – Japan may be subject to political, economic, nuclear, and labor risks, among others. Any of these risks, individually or in the aggregate, can impact an investment made in Japan. Since 2000, Japan’s economic growth rate has generally remained low relative to other advanced economies, and it may remain low in the future. The Japanese economy faces several concerns, any of which could negatively affect the value of Japanese investments. In addition, Japan’s labor market is adapting to an aging workforce, declining population, and demand for increased labor mobility. These demographic shifts and fundamental structural changes to the labor market may negatively impact Japan’s economic competitiveness.
AZL Moderate Index Strategy Fund | European Investment Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

European Investment Risk – Investments in certain countries in the European Union (the “EU”) are susceptible to high economic risks associated with high levels of debt, such as investments in sovereign debt of Greece, Italy and Spain. Efforts of the member countries to further unify their economic and monetary policies may increase the potential for the downward movement of one member country’s market to cause a similar effect on other member countries’ markets. Separately, the EU faces issues involving its membership, structure, procedures and policies. The exit of one or more member countries from the EU, such as the exit of the United Kingdom (known as “Brexit”), could place its currency and banking system in jeopardy. An exit by other member countries could likely result in increased volatility, illiquidity and potentially lower economic growth in the affected markets, which may adversely affect a fund’s investments.
AZL Moderate Index Strategy Fund | Currency Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Currency Risk – Investing in securities that trade in and receive revenues in foreign currencies creates risk because foreign currencies may decline relative to the U.S. dollar, resulting in a potential loss to a fund. In the case of hedging positions, the U.S. dollar may decline in value relative to the currency that has been hedged.
AZL Moderate Index Strategy Fund | Treasury Obligations Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Treasury Obligations Risk – Direct obligations of the U.S. Treasury have historically involved little risk of loss of principal if held to maturity. However, due to fluctuations in interest rates, the market value of such securities may vary during the period shareholders own shares of a fund. Because U.S. Treasury obligations trade actively outside the United States, their prices may rise and fall as changes in global economic conditions affect the demand for these securities. In addition, changes in the credit rating or financial condition of the U.S. government may cause the value of U.S. Treasury Obligations to decline. Although a fund may hold securities that carry U.S. government guarantees, these guarantees do not extend to shares of the fund.
AZL Moderate Index Strategy Fund | U.S. Government Obligations Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

U.S. Government Obligations Risk – Certain securities in which a fund may invest, including securities issued by certain government agencies and government sponsored enterprises, are not guaranteed by the U.S. Government or supported by the full faith and credit of the United States. It is possible that issuers of U.S. government securities will not have the funds to meet their payment obligations in the future. No assurance can be given that the U.S. government will provide financial support to its agencies and authorities if it is not obligated by law to do so.
AZL Moderate Index Strategy Fund | Sovereign Debt Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Sovereign Debt Risk – Sovereign debt instruments are subject to the risk that a governmental entity may delay or refuse to pay interest or repay principal on its sovereign debt, due, for example, to cash flow problems, insufficient foreign currency reserves, political considerations, the relative size of the governmental entity’s debt position in relation to the economy or the failure to put in place economic reforms required by the International Monetary Fund or other multilateral agencies.
AZL Moderate Index Strategy Fund | Interest Rate Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk – Debt securities held by a fund may decline in value due to rising interest rates. Macroeconomic factors, such as inflationary trends, can heighten interest rate risk.
AZL Moderate Index Strategy Fund | Credit Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Credit Risk – The failure of the issuer of a debt security to pay interest or repay principal in a timely manner may have an adverse impact on a fund’s earnings.
AZL Moderate Index Strategy Fund | Income Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Income Risk – Income risk is the risk that the Fund’s yield will vary as short-term securities in its portfolio mature and the proceeds are reinvested in securities with different interest rates. Falling interest rates may cause a fund’s income to decline.
AZL Moderate Index Strategy Fund | Call Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Call Risk – If interest rates fall, issuers of callable debt securities are more likely to prepay prior to the maturity date. The fund may not be able to reinvest the proceeds from the prepayment in investments that will generate the same level of income.
AZL Moderate Index Strategy Fund | Extension Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Extension Risk – If interest rates rise, debt securities may be paid in full more slowly than anticipated. Periods of low relative interest rates or inflationary trends may increase the risks associated with rising interest rates.
AZL Moderate Index Strategy Fund | Derivatives Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Derivatives Risk – Investing in derivative instruments involves risks that may be different from or greater than the risks associated with investing directly in securities or other traditional investments. Derivatives are subject to a number of other risks, such as liquidity risk, interest rate risk, market risk, credit risk, counterparty risk, and selection risk. Derivatives also involve the risk of mispricing or improper valuation and the risk that changes in the value may not correlate perfectly with the underlying asset, rate, or index. Using derivatives may result in losses, possibly in excess of the principal amount invested.
AZL Moderate Index Strategy Fund | Futures Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Futures Risk – The value of futures contracts depend primarily upon the price of the securities, indexes, commodities, currencies or other instruments underlying them. Price movements are also influenced by, among other things, interest rates, changing supply and demand relationships, trade, fiscal, monetary, and exchange control programs and policies of

governments, and national and international political and economic events and policies. The cost of futures may also be related, in part, to the degree of volatility of the underlying indices, securities, currencies, or other assets. Accordingly, futures on highly volatile indices, securities, currency, or other assets may be more expensive than futures on other investments. Changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index, and a fund could lose more than the principal amount invested.
AZL Moderate Index Strategy Fund | Swaps Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Swaps Risk – A swap is a two-party contract that generally obligates each counterparty to exchange periodic payments based on a pre-determined underlying investment or notional amount and to exchange collateral to secure the obligations of each counterparty. Swaps may be leveraged and are subject to counterparty risk, credit risk and pricing risk. Swaps may be subject to illiquidity risk, and it may not be possible for the fund to liquidate a swap position at an advantageous time or price, which may result in significant losses.
AZL Moderate Index Strategy Fund | Leveraging Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Leveraging Risk – Certain Underlying Funds may engage in certain kinds of transactions, including the use of derivatives, that may give rise to a form of leverage. The use of leverage may require a fund to liquidate a portfolio position at a disadvantageous time or may exaggerate the effect of any increase or decrease in the value of the Fund’s portfolio securities.
AZL Moderate Index Strategy Fund | Liquidity Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk – An investment that is difficult to purchase or sell may have an adverse effect on the fund’s returns. Liquid securities can become illiquid during periods of market stress. If a significant amount of the fund’s securities become illiquid, the fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.
AZL Moderate Index Strategy Fund | Mortgage-Related and Other Asset-Backed Securities Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Mortgage-Related and Other Asset-Backed Securities Risk – Investing in mortgage-related or other asset-backed securities involves a variety of risks associated with the credit markets, such as rising or falling interest rates, increases in the rate of defaults or prepayments, and the quality of the pool of mortgages (subprime risk) or other assets that back the security.
AZL Moderate Index Strategy Fund | Portfolio Turnover Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Portfolio Turnover Risk – A Fund may trade portfolio securities frequently, which could result in higher transaction costs and could adversely affect the fund’s performance.
AZL Moderate Index Strategy Fund | Privately Placed, Rule 144A and Other Exempt Securities Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Privately Placed, Rule 144A and Other Exempt Securities Risk – Certain Underlying Funds may invest in privately placed securities, which are subject to resale restrictions. The market for Rule 144A and other securities exempt from certain registration requirements may be less active than the market for publicly-traded securities. Rule 144A and other exempt securities carry the risk that their liquidity may become impaired and a fund may be unable to dispose of the securities at a desirable time or price.
AZL Moderate Index Strategy Fund | Repurchase Agreements and Purchase and Sale Contracts Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreements and Purchase and Sale Contracts Risk – If the other party to a repurchase agreement or purchase and sale contract defaults on its obligation under the agreement, a fund may suffer delays and incur costs or lose money in exercising its rights under the agreement. If the seller fails to repurchase the security in either situation and the market value of the security declines, the fund may lose money.
AZL Moderate Index Strategy Fund | Collateralized Debt Obligations Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Collateralized Debt Obligations Risk – In addition to the typical risks associated with fixed-income securities and asset-backed securities, collateralized debt obligations, including CLOs, carry additional risks including, but not limited to: (i) the possibility that distributions from collateral securities will not be adequate to make interest or other payments; (ii) the risk that the collateral may default or decline in value or be downgraded, if rated by a nationally recognized statistical rating organization; (iii) a fund may invest in tranches of CDOs that are subordinate to other tranches; (iv) the structure and complexity of the transaction and the legal documents could lead to disputes among investors regarding the characterization of proceeds; (v) the investment return achieved by a fund could be significantly different than those predicted by financial models; (vi) the lack of a readily available secondary market for CDOs; (vii) the risk of forced “fire sale” liquidation due to technical defaults such as coverage test failures; and (viii) the CDO’s manager may perform poorly.
AZL Moderate Index Strategy Fund | Technology Sector Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Technology Sector Risk – Technology companies, including information technology companies, may have limited product lines, markets, financial resources or personnel. Technology companies typically face intense competition and potentially rapid product obsolescence. They are also heavily dependent on intellectual property rights and may be adversely affected by the loss or impairment of those rights.
AZL Moderate Index Strategy Fund | Financial Markets Regulatory Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

Financial Markets Regulatory Risk - Policy changes by the U.S. government or its regulatory agencies and other governmental actions and political events within the U.S. and abroad may, among other things, affect investor and

consumer confidence and increase volatility in the financial markets, perhaps suddenly and to a significant degree, which may adversely impact a fund, including by adversely impacting the fund’s operations, universe of potential investment options, and return potential.
AZL Moderate Index Strategy Fund | When-Issued, Delayed Delivery Securities and Forward Commitments Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock

When-Issued, Delayed Delivery Securities and Forward Commitments Risk – The purchase or sale of securities on a when issued basis or on a delayed delivery basis or through a forward commitment involves the purchase or sale of securities at an established price with payment and delivery taking place in the future. When-issued and delayed delivery transactions subject a fund to market risk because the value or yield of a security at delivery may be more or less than the purchase price or yield generally available when delivery occurs, and counterparty risk because the fund relies on the buyer or seller, as the case may be, to consummate the transaction. These transactions also have a leveraging effect on a fund because the fund commits to purchase securities that it does not have to pay for until a later date, which increases the fund’s overall investment exposure and, as a result, its volatility.
AZL Moderate Index Strategy Fund | S&P 500 Index  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 25.02% [1]
5 Years rr_AverageAnnualReturnYear05 14.53% [1]
10 Years rr_AverageAnnualReturnYear10 13.10% [1]
AZL Moderate Index Strategy Fund | Bloomberg U.S. Aggregate Bond Index  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 1.25% [1]
5 Years rr_AverageAnnualReturnYear05 (0.33%) [1]
10 Years rr_AverageAnnualReturnYear10 1.35% [1]
AZL Moderate Index Strategy Fund | Moderate Composite Index  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 15.13% [1]
5 Years rr_AverageAnnualReturnYear05 8.80% [1]
10 Years rr_AverageAnnualReturnYear10 8.57% [1]
AZL Moderate Index Strategy Fund | AZL Moderate Index Strategy Fund  
Risk/Return: rr_RiskReturnAbstract  
Management Fee rr_ManagementFeesOverAssets 0.20%
Other Expenses rr_OtherExpensesOverAssets 0.03%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.59% [2]
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.82%
Fee Waiver rr_FeeWaiverOrReimbursementOverAssets (0.15%) [3]
Total Annual Fund Operating Expenses After Fee Waiver rr_NetExpensesOverAssets 0.67% [3]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 68
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 247
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 440
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,000
Annual Return 2015 rr_AnnualReturn2015 (2.47%)
Annual Return 2016 rr_AnnualReturn2016 8.91%
Annual Return 2017 rr_AnnualReturn2017 13.30%
Annual Return 2018 rr_AnnualReturn2018 (5.17%)
Annual Return 2019 rr_AnnualReturn2019 19.33%
Annual Return 2020 rr_AnnualReturn2020 12.84%
Annual Return 2021 rr_AnnualReturn2021 12.06%
Annual Return 2022 rr_AnnualReturn2022 (15.37%)
Annual Return 2023 rr_AnnualReturn2023 14.82%
Annual Return 2024 rr_AnnualReturn2024 9.98%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest (Q2, 2020)
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2020
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 13.34%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest (Q1, 2020)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (13.36%)
1 Year rr_AverageAnnualReturnYear01 9.98%
5 Years rr_AverageAnnualReturnYear05 6.21%
10 Years rr_AverageAnnualReturnYear10 6.29%
[1] Reflects no deduction for fees, expenses, or taxes.
[2] Because Acquired Fund Fees and Expenses are not included in the Fund’s Financial Highlights, the Fund’s total annual fund operating expenses do not correlate to the ratios of expenses to average net assets shown in the Financial Highlights table.
[3] The Manager and the Fund have entered into a written agreement reducing the management fee to 0.05% through at least April 30, 2026, after which the fee waiver may be terminated by the Manager or the Fund at any time and for any reason.