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Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading SUMMARY INFORMATION: SANFORD C. BERNSTEIN FUND, INC. NON‑U.S. EQUITY PORTFOLIO Emerging Markets Portfolio of Sanford C. Bernstein Fund, Inc.
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE:
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Portfolio’s investment objective is to provide long-term capital growth through investments in equity securities of companies in emerging-market countries.
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES OF THE PORTFOLIO:
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Portfolio. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Portfolio 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 Portfolio pays transaction costs, such as commissions, when it buys or sells securities (or “turns over” 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 transaction costs, which are not reflected in the Annual Portfolio Operating Expenses or in the Examples, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 74% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 74.00%
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 the Portfolio with the cost of investing in other mutual funds. The Examples assume 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 Examples also assume that your investment has a 5% return each year and that the Portfolio’s operating expenses stay the same. Although your actual costs may be higher or lower, based on these assumptions your costs as reflected in the Examples would be:
Strategy [Heading] rr_StrategyHeading PRINCIPAL STRATEGIES:
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Portfolio invests, under normal circumstances, at least 80% of its net assets in securities of companies in emerging markets. For purposes of this policy, net assets include any borrowings for investment purposes. Issuers of these securities may be large-, mid‑ or small-capitalization companies.
AllianceBernstein L.P., the Portfolio’s investment manager (the “Manager”), determines which countries are emerging-market countries. In general, these are the countries considered to be developing countries by the international financial community and include those countries considered by MSCI (Morgan Stanley Capital International) to have an “emerging or frontier stock market.” Examples of emerging and frontier market countries include Argentina, Brazil, Chile, China, Colombia, Czech Republic, Egypt, Greece, Hungary, India, Indonesia, Kuwait, Lithuania, Malaysia, Mexico, Morocco, Pakistan, Peru, the Philippines, Poland, Qatar, Saudi Arabia, South Africa, South Korea, Taiwan, Thailand, Turkey, the United Arab Emirates and Vietnam.
The investment team allocates the Portfolio’s investments among broad sector groups based on the fundamental company research conducted by the Manager’s internal research staff, assessing the current and forecasted investment opportunities and conditions, as well as diversification and risk considerations. The Portfolio may own stocks selected using the Manager’s bottom‑up research in value, growth, core and other investment style disciplines. The Manager may allocate assets to companies in different targeted ranges of market capitalization. The Manager relies on both fundamental and quantitative research to manage risk and return for the Portfolio.
The Portfolio may invest in companies of any size. The Portfolio invests primarily in common stocks, but may also invest in preferred stocks, warrants and convertible securities of foreign issuers, including sponsored or unsponsored American Depositary Receipts (“ADRs”) and Global Depositary Receipts (“GDRs”).
Under most conditions, the Portfolio intends to have its assets invested among multiple emerging-market countries, although the Portfolio may also invest in more developed country markets. In allocating the Portfolio’s assets among emerging-market countries, the Manager considers such factors as the geographical distribution of the Portfolio, the sizes of the stock markets represented and the various key economic characteristics of the countries. However, the Portfolio may not necessarily be diversified on a geographical basis. The Manager also considers the transaction costs and volatility of each individual market.
The Portfolio may enter into foreign currency transactions for hedging and non‑hedging purposes on a spot (i.e., cash) basis or through the use of derivatives transactions, such as forward currency exchange contracts, currency futures and options thereon, and options on currencies. An appropriate hedge of currency exposure resulting from the Portfolio’s securities positions may not be available or cost effective, or the Manager may determine not to hedge the positions, possibly even under market conditions where doing so could benefit the Portfolio. The Portfolio generally invests in foreign-currency futures contracts or foreign-currency forward contracts with terms of up to one year. The Portfolio also purchases foreign currency for immediate settlement in order to purchase foreign securities. In addition, the Portfolio may invest a portion of its uncommitted cash balances in futures contracts on securities or baskets of securities to expose that portion of the Portfolio to the equity markets. The Portfolio may use derivatives, such as options, futures contracts, forward contracts and swaps. The Portfolio may use options strategies involving the purchase and/or writing of various combinations of call and/or put options, including on individual securities and stock indices, futures contracts (including futures contracts on individual securities and stock indices) or shares of exchange-traded funds (“ETFs”). These transactions may be used, for example, in an effort to earn extra income, to adjust exposure to individual securities or markets, or to protect all or a portion of the Portfolio from a decline in value, sometimes within certain ranges.
Risk [Heading] rr_RiskHeading PRINCIPAL RISKS:
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading BAR CHART AND PERFORMANCE INFORMATION:
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The bar chart and performance information provide an indication of the historical risk of an investment in the Portfolio by showing:
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how the Portfolio’s performance changed from year to year over ten years; and
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how the Portfolio’s average annual returns for one, five and ten years compare to those of a broad-based securities market index.
You may obtain updated performance information for the Portfolio at www.bernstein.com (at the bottom of the page, click on “Investments,” then “Mutual Fund Performance at a Glance”).
The Portfolio’s past performance before and after taxes, of course, does not necessarily indicate how it will perform in the future. As with all investments, you may lose money by investing in the Portfolio.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns how the Portfolio’s performance changed from year to year over ten years; andhow the Portfolio’s average annual returns for one, five and ten years compare to those of a broad-based securities market index.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.bernstein.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Portfolio’s past performance before and after taxes, of course, does not necessarily indicate how it will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Bar Chart
Bar Chart Narrative [Text Block] rr_BarChartNarrativeTextBlock
The annual returns in the bar chart are for the Emerging Markets Class shares.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock Calendar Year End (%) During the period shown in the bar chart, the Portfolio’s: Best Quarter was up 21.87%, 4th quarter, 2020; and Worst Quarter was down -25.86%, 1st quarter, 2020.
Performance Table Heading rr_PerformanceTableHeading Performance Table Average Annual Total Returns* (For the periods ended December 31, 2024)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After‑tax returns are an estimate, which is based on 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 individual investor’s tax situation and are likely to differ from those shown, and are not relevant to investors who hold Portfolio shares through tax‑deferred arrangements such as 401(k) plans or individual retirement accounts.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock
After‑tax returns are an estimate, which is based on 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 individual investor’s tax situation and are likely to differ from those shown, and are not relevant to investors who hold Portfolio shares through tax‑deferred arrangements such as 401(k) plans or individual retirement accounts.
Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Risk Lose Money [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock The share price of the Portfolio will fluctuate and you may lose money.
Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Emerging Markets Securities Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
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Emerging Markets Securities Risk: Investments in foreign securities entail significant risks in addition to those customarily associated with investing in U.S. equities. These risks include risks related to unfavorable or unsuccessful government actions, reduction of government or central bank support, economic sanctions and tariffs and potential responses to those sanctions and tariffs, inadequate accounting standards and auditing and financial recordkeeping requirements, lack of information, social instability, armed conflict, and other adverse market, economic, political and regulatory factors, all of which could disrupt the financial markets in which the Portfolio invests and adversely affect the value of the Portfolio’s assets. These risks are heightened with respect to issuers in emerging-market countries because the markets are less developed, less liquid and subject to increased potential for market manipulation, and there may be a greater amount of economic, political and social uncertainty. These risks are even more pronounced in “frontier” markets, which are investable markets with lower total market capitalization and liquidity than the more developed emerging markets. Emerging markets typically have fewer medical and economic resources than more developed countries, and thus they may be less able to control or mitigate the effects of a pandemic, climate change, or a natural disaster.
Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Derivatives Risks [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
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Derivatives Risk: The Portfolio may use derivatives as direct investments to earn income, enhance return and broaden portfolio diversification, which entail greater risk than if used solely for hedging purposes. While hedging can guard against potential risks, there is also a risk that a derivative intended as a hedge may not perform as expected. In addition to other risks such as the credit risk of the counterparty (the party on the other side of the transaction), derivatives involve the risk that changes in the value of the derivative may not correlate with relevant assets, rates or indices. Derivatives may be difficult to price or unwind, and small changes may produce disproportionate losses for the Portfolio. Certain derivatives have the potential for unlimited loss, regardless of the size of the initial investment. Assets required to be set aside or posted as margin or collateral for derivatives positions may themselves go down in value, and these collateral and other requirements may limit investment flexibility. Some derivatives involve leverage, which can make the Portfolio more volatile and can compound other risks. Derivatives, especially over‑the‑counter derivatives, are also subject to counterparty risk, which is the risk that the counterparty on a derivative transaction will be unable or unwilling to honor its contractual obligations to the Portfolio. Use of derivatives may have different tax consequences for the Portfolio than an investment in the underlying asset or index, and such differences may affect the amount, timing and character of income distributed to shareholders. The U.S. Government and certain foreign governments have adopted regulations governing derivatives markets, including mandatory clearing of certain derivatives as well as additional regulations governing margin, reporting and registration requirements. The ultimate impact of the regulations remains unclear. Additional regulation may make derivatives more costly, limit their availability or utility, otherwise adversely affect their performance, or disrupt markets.
Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Illiquid Investments Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
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Illiquid Investments Risk: Illiquid investments risk exists when particular investments are difficult or impossible to purchase or sell, possibly preventing the Portfolio from purchasing or selling these securities at an advantageous price. In certain cases, governmental actions could prevent sales of securities or repatriation of proceeds. Illiquid securities may also be difficult to value. If the Portfolio is forced to sell an illiquid asset to meet redemption requests or other cash needs, or to try to limit losses, the Portfolio may be forced to sell at a substantial loss or may not be able to sell at all.
Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Sector Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
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Sector Risk: The Portfolio may have more risk because it may invest to a significant extent in one or more particular market sectors, such as the financials or information technology sector. To the extent it does so, market or economic factors affecting the relevant sector(s) could have a major effect on the value of the Portfolio’s investments.
Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Redemption Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
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Redemption Risk: The Portfolio may experience heavy redemptions that could cause the Portfolio to liquidate its assets at inopportune times or unfavorable prices or increase or accelerate taxable gains or transaction costs and may negatively affect the Portfolio’s net asset value (“NAV”), or performance, which could cause the value of your investment to decline. Redemption risk is heightened during periods of overall market turmoil.
Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Foreign Currency Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
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Foreign Currency Risk: This is the risk that changes in foreign (non‑U.S.) currency exchange rates may negatively affect the value of the Portfolio’s investments or reduce the returns of the Portfolio. For example, the value of the Portfolio’s investments in foreign securities and foreign currency positions may decrease if the U.S. Dollar is strong (i.e., gaining value relative to other currencies) and other currencies are weak (i.e., losing value relative to the U.S. Dollar).
Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Country Concentration Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
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Country Concentration Risk: The Portfolio may not always be diversified among countries or regions and the effect on the share price of the Portfolio of specific risks such as political, regulatory and currency may be magnified due to concentration of the Portfolio’s investments in a particular country or region.
Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Actions by a Few Major Investors [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
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Actions by a Few Major Investors: In certain countries, volatility may be heightened by actions of a few major investors. For example, substantial increases or decreases in cash flows of mutual funds investing in these markets could significantly affect local stock prices and, therefore, share prices of the Portfolio.
Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Capitalization Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
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Capitalization Risk: Investments in small-capitalization companies may be more volatile than investments in large-capitalization companies. Investments in small-capitalization companies may have additional risks because these companies may have limited product lines, markets or financial resources, and their personnel may lack management experience. The prices of securities of small capitalization companies generally are more volatile than those of large capitalization companies and are more likely to be adversely affected than large capitalization companies by changes in earnings results and investor expectations or poor economic or market conditions, including those experienced during a recession. Securities of small capitalization companies may underperform large capitalization companies, may be harder to sell at times or at prices the portfolio managers believe appropriate and may have greater potential for losses.
Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Allocation Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
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Allocation Risk: The allocation of investments among investment disciplines may have a significant effect on the Portfolio’s performance when the investment disciplines in which the Portfolio has greater exposure perform worse than the investment disciplines with less exposure. Different investment styles tend to shift in and out of favor depending on market conditions and investor sentiment. The Portfolio may allocate a significant portion of its assets to securities of companies in broadly related industries within an economic sector. Companies in the same sector may be similarly affected by economic or market events, making the Portfolio more vulnerable to unfavorable developments in that sector than funds that invest more broadly.
Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Market Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
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Market Risk: The Portfolio is subject to market risk, which is the risk that stock prices in general or in particular countries or sectors may decline over short or extended periods. Stock prices may decline in response to adverse changes in the economy or the economic outlook; deterioration in investor sentiment; interest rate, currency and commodity price fluctuations; inflationary pressures; adverse geopolitical, social or environmental developments; issuer- and sector-specific considerations; public health crises (including the occurrence of a contagious disease or illness) and regional and global conflicts (including war or civil dis-
 
turbance and acts of terrorism); cybersecurity events; market disruptions caused by tariffs; trade disputes; levels of government debt and deficits and measures to address budget deficits; downgrading of sovereign debt; sanctions or other government actions; and other factors. The United States and other countries are periodically involved in disputes over trade and other matters, which may result in tariffs on various categories of goods imported from the other country, restrictions on investment and adverse impacts on affected companies and securities. For example, the current political climate between the United States and China has intensified concerns about protectionist trade policies and a potential trade war between China and the United States. The United States has imposed tariffs and other trade barriers on Chinese exports and placed other restrictions on or barriers to investments in China. Trade disputes, particularly prolonged disputes, may adversely affect the economies of the United States and its trading partners, as well as the companies directly or indirectly affected by the dispute and financial markets generally, and thus may adversely affect the value of the Portfolio’s assets. In addition, an increase in tariffs or trade restrictions, or even the threat of such increased tariffs or restrictions, could lead to a significant reduction in international trade, which could have a negative impact on the global economy and a commensurately negative impact on the Portfolio. The United States government has in the recent past acted to prohibit U.S. persons, such as the Portfolio, from owning, and required them to divest, certain Chinese companies designated as related to the Chinese military. There is no assurance that more such companies will not be so designated in the future, which could limit the Portfolio’s opportunities for investment and require the sale of securities at a loss or make them illiquid. Some countries and regions in which the Portfolio invests have strained international relations due to territorial disputes, historical animosities or other defense concerns. Incidents involving a country’s or region’s security may cause uncertainty in the markets and may adversely affect a Portfolio’s investments. For example, the Chinese government is involved in a territorial dispute with Taiwan as well as other territorial disputes; the risk of a forced unification with Taiwan by the Chinese government may adversely affect securities of Chinese, Taiwan-based and other issuers both in and outside the region. If the political climate between the United States, China and other countries in Asia continues to deteriorate, economies and markets may be adversely affected.
Policy and legislative changes in the U.S. and in other countries are affecting many aspects of financial regulation, and these and other events affecting global markets, such as the United Kingdom’s exit from the European Union; potential trade imbalances with China or other countries; or sanctions or other government actions against Russia, other nations, or individuals or companies (or countermeasures taken in response to such sanctions), may contribute to decreased liquidity and increased volatility in the financial markets. The impact of these changes on the markets, and the implications for market participants, may not be fully known for some time.
Economies and financial markets throughout the world are highly interconnected. Economic, financial or political events, trading and tariff arrangements, armed conflict, including Russia’s military invasion of Ukraine and the conflict involving Israel and other countries in the Middle East, terrorism, natural disasters (including the spread of infectious illness) and other circumstances in one country or region could have profound impacts on global economies or markets. Following Russia’s invasion of Ukraine commencing in February of 2022, the United States, the European Union and other countries instituted numerous sanctions against Russia and Belarus and certain companies and individuals. Russia in turn has taken a large number of retaliatory actions, some of which effectively froze Russian securities held by U.S. investors (including U.S. funds such as the Portfolio) and investors in other countries viewed as “unfriendly” by Russia, including securities represented by depositary receipts, effectively precluding the Portfolio from buying, selling, receiving or delivering those securities or accessing income received on such securities. Since then, Russian securities held by investors in the U.S. and other jurisdictions viewed as “unfriendly” by Russia have lost all, or nearly all, of their market value, and many other issuers, securities and markets have been adversely affected. The disruption of the Russian economy has had severe adverse effects on the region and beyond, including significant negative impacts on the markets for certain securities and commodities, such as oil and natural gas, as well as other sectors. As a result, whether or not the Portfolio invests in securities of issuers located in or with significant exposure to countries experiencing economic and financial difficulties, the value and liquidity of the Portfolio’s investments may be negatively affected.
Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Management Risk [Member]  
Risk/Return: rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock
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Management Risk: The Portfolio is subject to management risk because it is an actively-managed investment portfolio. The Manager will apply its investment techniques and risk analyses in making investment decisions for the Portfolio, but these techniques, analyses and decisions may not work as intended or may not produce the desired results, and may, during certain periods, result in increased volatility for the Portfolio or cause the value of the Portfolio’s shares to go down. In some cases, derivatives and other investment techniques may be unavailable, or the Manager may determine not to use them, possibly even under market conditions where their use could benefit the Portfolio. Some of these techniques may incorporate, or rely upon, quantitative models, but there is no guarantee that these models will generate accurate forecasts, reduce risk or otherwise perform as expected. In addition, the Manager may change the Portfolio’s investment strategies or policies from time to time. Those changes may not lead to the results intended by the Manager and could have an adverse effect on the value or performance of the Portfolio.
Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Emerging Markets Class  
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 offering price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOther none
Maximum Account Fee rr_MaximumAccountFeeOverAssets none
Management Fees rr_ManagementFeesOverAssets 0.95%
Distribution and/or Service (12b‑1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses: Shareholder Servicing rr_Component1OtherExpensesOverAssets 0.25%
Other Expenses: Transfer Agent rr_Component2OtherExpensesOverAssets 0.02%
Other Expenses rr_Component3OtherExpensesOverAssets 0.08%
Total Other Expenses rr_OtherExpensesOverAssets 0.35%
Total Annual Portfolio Operating Expenses rr_ExpensesOverAssets 1.30%
After 1 Year rr_ExpenseExampleYear01 $ 132
After 3 Years rr_ExpenseExampleYear03 412
After 5 Years rr_ExpenseExampleYear05 713
After 10 Years rr_ExpenseExampleYear10 $ 1,568
2015 rr_AnnualReturn2015 (13.48%)
2016 rr_AnnualReturn2016 10.42%
2017 rr_AnnualReturn2017 32.96%
2018 rr_AnnualReturn2018 (22.25%)
2019 rr_AnnualReturn2019 24.68%
2020 rr_AnnualReturn2020 15.25%
2021 rr_AnnualReturn2021 1.58%
2022 rr_AnnualReturn2022 (21.38%)
2023 rr_AnnualReturn2023 10.43%
2024 rr_AnnualReturn2024 8.45%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2020
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 21.87%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (25.86%)
1 Year rr_AverageAnnualReturnYear01 8.45% [1]
5 Years rr_AverageAnnualReturnYear05 1.97% [1]
10 Years rr_AverageAnnualReturnYear10 3.00% [1]
Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Return After Taxes on Distributions | Emerging Markets Class  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 8.38% [1]
5 Years rr_AverageAnnualReturnYear05 1.46% [1]
10 Years rr_AverageAnnualReturnYear10 2.55% [1]
Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Return After Taxes on Distributions and Sale of Portfolio Shares | Emerging Markets Class  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 5.83% [1]
5 Years rr_AverageAnnualReturnYear05 1.77% [1]
10 Years rr_AverageAnnualReturnYear10 2.54% [1]
Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | MSCI Emerging Markets Index (reflects no deduction for fees, expenses, or taxes)  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 7.50% [1]
5 Years rr_AverageAnnualReturnYear05 1.70% [1]
10 Years rr_AverageAnnualReturnYear10 3.64% [1]
[1]
Return information includes the portfolio transaction fees that were eliminated on February 2, 2015.