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Investment Objective

Expense Heading [Optional Text]

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Fees and Expenses

Shareholder Fees Caption [Optional Text]

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Shareholder Fees (fees paid directly from your investment)

Expenses Restated to Reflect Current [Text]

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Total Annual Fund Operating Expenses have been restated to reflect current expenses as of June 30, 2026.

Expense Example Narrative [Text Block]

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This Example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s Total Annual Operating Expenses remain the same. Although your actual cost may be higher or lower, based on these assumptions, your cost would be:

Portfolio Turnover [Text Block]

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The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” investments in its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in the Total Annual Operating Expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s turnover was 54% of the average value of its portfolio.

Strategy [Heading]

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Principal Investment Strategies

Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block]

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Under normal circumstances, the Portfolio will provide exposure to investments that are economically tied to at least three different countries, including the U.S., and at least 40% of the Portfolio’s net assets will provide exposure to investments that are economically tied to non-U.S. countries. Although the Portfolio, a diversified investment company, may invest anywhere in the world, the Portfolio is expected to invest primarily in the equity markets included in the MSCI EAFE Index. The Portfolio may also invest in companies of any market capitalization. The Portfolio may invest in securities issued by other investment companies, including ETFs and closed-end funds, that invest in equity securities of issuers located in non-U.S. countries.

Rule 35d-1 Eighty Percent Investment Policy [Text Block]

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Under normal circumstances, the Portfolio invests primarily (i.e., at least 80% of its net assets) in equity securities.

Performance Narrative [Text Block]

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Performance. The chart and table below show how The Institutional International Equity Portfolio has performed, and how its performance has varied, from year to year. The bar chart shows returns on a before-tax basis and gives some indication of risk by showing changes in the Portfolio’s yearly performance for each of the last ten full calendar years. The table accompanying the bar chart compares the Portfolio’s performance over time on a before and after-tax basis to that of a broad based market index. Of course, past performance, before and after taxes, does not indicate how the Portfolio will perform in the future.

Performance Past Does Not Indicate Future [Text]

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Of course, past performance, before and after taxes, does not indicate how the Portfolio will perform in the future.

Bar Chart Footnotes [Text Block]

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* Results shown on a calendar year basis; the Portfolio’s fiscal year, however, is June 30.

Year to Date Return, Label [Optional Text]

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before-tax return

Bar Chart, Year to Date Return

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6.72%

Highest Quarterly Return, Date

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Dec. 31, 2022

Lowest Quarterly Return, Label [Optional Text]

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Worst quarter:

Lowest Quarterly Return

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(25.17%)

Index No Deduction for Fees, Expenses, or Taxes [Text]

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(reflects no deduction for fees, expenses or taxes)

Performance Table Not Relevant to Tax Deferred

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Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold Portfolio shares through tax-advantaged arrangements, such as qualified retirement plans.

Risk [Text Block]

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There is no guarantee that the Portfolio will achieve its investment objective and, as is the case with any investment, you may lose money on your investment in the Portfolio.

Prospectus [Line Items]

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Risk [Text Block]

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Passive Investing Risk – the Portfolio may employ a passive investment approach, which attempts to approximate as closely as practicable, before expenses, the performance of either the Portfolio’s benchmark index, or one or more identifiable subsets or other portions of that index as deemed appropriate by the Adviser, regardless of the current or projected performance of a specific security or a particular industry or market sector. Maintaining investments in securities regardless of market conditions or the performance of individual securities could cause the Portfolio’s return to be lower than if the Portfolio employed an active strategy. In addition, the Portfolio’s return may not match or achieve a high degree of correlation with the return of the target investment pool due to operating expenses, transaction costs, and cash flows.

Additionally, the range of securities in which the Portfolio may invest, and the several investment strategies that may be used in seeking to achieve the Portfolio’s objective, involve additional risks. These are summarized below.

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Risk [Text Block]

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•	Equity Market Risk – The market value of an equity security and the equity markets in general can be volatile.

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Risk [Text Block]

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Sector Emphasis Risk – Sector risk is the possibility that a certain sector may perform differently than other sectors or as the market as a whole. Although the Portfolio will not concentrate its investments (i.e. invest more than 25% of the value of its total assets) in securities of issuers in any industry or group of industries, the Portfolio may emphasize investments in one or more sectors. At times when the Portfolio emphasizes a particular sector, the value of its net assets will be more susceptible to the financial, market or economic events affecting that sector than would be the case for funds that do not emphasize investment in a particular sector. This may increase the risk of loss associated with an investment in the Portfolio. As of the date of this Prospectus, the Portfolio currently invests a significant portion of its assets in companies in the information technology sector, and therefore the performance of the Portfolio could be negatively impacted by events affecting this sector. Companies in the information technology sector are subject to rapid changes in technology product cycles, rapid product obsolescence, government regulation, and increased competition.

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Risk [Text Block]

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Exchange-Traded Funds Risk – In addition to the risks of investing in other investment companies generally, an investment in securities issued by an ETF may be subject to the following risks: (1) shares of the ETF may trade at a discount to its net asset value; (2) an active trading market for the ETF’s shares may not develop; (3) the exchange on which the ETF is listed may, under certain circumstances, suspend trading of the ETF’s shares; and (4) to the extent that an ETF is acquired in order to track a specific asset or index, the ETF may fail to effectively accomplish that goal.

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Foreign Securities Risk – Investments in securities issued by non-U.S. companies and/or non-U.S. governments and their agencies, may be adversely affected by the lack of timely or reliable financial information, political, social and/or economic developments abroad and differences between U.S. and foreign regulatory requirements and market practices. In addition, transaction expenses related to foreign securities, including custody fees, are generally more costly than transaction expenses for domestic securities.

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Emerging Markets Risk – Risks associated with foreign investments may be intensified in the case of investments in emerging market countries, whose political, legal and economic systems are less developed and less stable than those of more developed nations. Such investments are often less liquid and/or more volatile than securities issued by companies located in developed nations, such as the United States, Canada and those included in the MSCI EAFE Index. Certain types of securities, including emerging market securities, are subject to the risk that the securities may not be sold at the quoted market price within a reasonable period of time.

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General Derivative Risks – Derivatives may be volatile and may involve significant risks. The Portfolio’s exposure to derivatives involves risks different from, or possibly greater than, the risks associated with investing directly in securities and other investments. The underlying security, measure or other instrument on which a derivative is based, or the derivative itself, may not perform as expected, and hedging positions may not correlate closely with the instruments or exposures being hedged. Normally derivatives involve leverage, which means that their use can significantly magnify the effect of price movements of the underlying securities or reference measures, disproportionately increasing the Portfolio’s losses and reducing the Portfolio’s opportunities for gains. Some derivatives have the potential for unlimited loss, including a loss that may be greater than the amount invested. Derivatives also present default risks if the counterparty to a derivatives contract fails to fulfill its obligations to the Portfolio. Certain derivatives held by the Portfolio may be illiquid, including non-exchange-traded or over-the-counter derivatives that are linked to illiquid instruments or illiquid markets, making it difficult to close out an unfavorable position. Derivatives also may be more difficult to purchase, sell or value than other instruments. Derivatives risk may be more significant when derivatives are used to enhance return or as a substitute for a cash investment position, rather than solely to hedge the risk of a position held by the Portfolio.

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Derivatives Tax Risk – Compared to other types of investments, derivatives may be less tax efficient. In addition, changes in government regulation of derivative instruments could affect the character, timing and amount of the Portfolio’s taxable income or gains, and may limit or prevent the Portfolio’s use of certain derivative instruments, which could make the investment strategy more costly to implement or require the Portfolio to change its investment strategy. These rules may: (i) affect whether gains and losses recognized by the Portfolio are treated as ordinary or capital or as short-term or long-term, (ii) accelerate the recognition of income or gains to the Portfolio, (iii) defer losses to the Portfolio, and (iv) cause adjustments in the holding periods of the Portfolio’s securities. The Portfolio’s use of derivatives may be limited by the requirements for taxation of the Portfolio as a regulated investment company.

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Options Writing Strategy Risk – if the underlying index appreciates or depreciates sufficiently over the period to offset the new premium received from the written option on that index, a net loss will result. In addition, the Portfolio may write options on index substitutes, which are subject to the same risks as index options. I The value of the index substitute is subject to change as the values of the component securities fluctuate and the performance of the index substitute may not exactly match the performance of the index.

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Futures Risk – there can be no assurance that price movements in the futures markets will correlate with the prices of the underlying securities positions. Additionally, price distortions could result if investors in the futures markets opt to make or take delivery of the underlying securities rather than engage in closing transactions because such trend might result in a reduction in the liquidity of the futures market. Further, an increase in the participation of speculators in the futures market could cause temporary price distortions.