| Label | Element | Value | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 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.
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| 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.
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| 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.
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| 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:
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| 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.
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| 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:
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.
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| 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.
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| 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.
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| 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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| Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Derivatives Risks [Member] | |||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||
| Risk [Text Block] | rr_RiskTextBlock |
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| 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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| Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Sector Risk [Member] | |||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||
| Risk [Text Block] | rr_RiskTextBlock |
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| Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Redemption Risk [Member] | |||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||
| Risk [Text Block] | rr_RiskTextBlock |
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| 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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| 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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| 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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| Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Capitalization Risk [Member] | |||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||
| Risk [Text Block] | rr_RiskTextBlock |
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| Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Allocation Risk [Member] | |||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||
| Risk [Text Block] | rr_RiskTextBlock |
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| Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Market Risk [Member] | |||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||
| Risk [Text Block] | rr_RiskTextBlock |
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.
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| Sanford C. Bernstein Fund, Inc. | Emerging Markets Portfolio | Management Risk [Member] | |||||||||
| Risk/Return: | rr_RiskReturnAbstract | ||||||||
| Risk [Text Block] | rr_RiskTextBlock |
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| 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] | ||||||
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