Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	ALLIANCEBERNSTEIN GLOBAL REAL ESTATE INVESTMENT FUND INC
Prospectus Date	rr_ProspectusDate	Mar. 01, 2014
ALLIANCEBERNSTEIN GLOBAL REAL ESTATE INVESTMENT FUND, INC.
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	ALLIANCEBERNSTEIN GLOBAL REAL ESTATE INVESTMENT FUND
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund’s investment objective is total return from long-term growth of capital and income.
Expense [Heading]	rr_ExpenseHeading	FEES AND EXPENSES OF THE FUND
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge reductions if you and members of your family invest, or agree to invest in the future, at least $100,000 in AllianceBernstein Mutual Funds. More information about these and other discounts is available from your financial intermediary and in Investing in the Funds--Sales Charge Reduction Programs for Class A Shares on page 56 of this Prospectus and in Purchase of Shares--Sales Charge Reduction Programs for Class A Shares on page 113 of the Funds’ SAI.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	PORTFOLIO TURNOVER
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund pays transaction costs, such as commissions, when it buys 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 Fund shares are held in a taxable account. These transaction costs, which are not reflected in the Annual Fund Operating Expenses or in the Examples, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 115% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	115.00%
Expenses Deferred Charges [Text Block]	rr_ExpensesDeferredChargesTextBlock	Purchases of Class A shares in amounts of $1,000,000 or more, or by certain group retirement plans, may be subject to a 1%, 1-year CDSC which may be subject to waiver in certain circumstances. Class B shares automatically convert to Class A shares after eight years. The CDSC decreases over time. For Class B shares the CDSC decreases 1.00% annually to 0% after the fourth year. For Class C shares, the CDSC is 0% after the first year.
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge reductions if you and members of your family invest, or agree to invest in the future, at least $100,000 in AllianceBernstein Mutual Funds.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 100,000
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 Fund with the cost of investing in other mutual funds. The Examples assume that you invest $10,000 in the Fund 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 Fund’s operating expenses stay the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, No Redemption, By Year, Caption [Text]	rr_ExpenseExampleNoRedemptionByYearCaption	For the share classes listed below, you would pay the following expenses if you did not redeem your shares at the end of the period:
Strategy [Heading]	rr_StrategyHeading	PRINCIPAL STRATEGIES
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Fund invests at least 80% of its net assets in the equity securities of real estate investment trusts, or REITs, and other real estate industry companies, such as real estate operating companies, or REOCs. The Fund invests in real estate companies that the Adviser believes have strong property fundamentals and management teams. The Fund seeks to invest in real estate companies whose underlying portfolios are diversified geographically and by property type. The Fund invests in U.S. and non-U.S. issuers. Under normal circumstances, the Fund invests significantly (at least 40%--unless market conditions are not deemed favorable by the Adviser) in securities of non-U.S. companies. In addition, the Fund invests, under normal circumstances, in the equity securities of companies located in at least three countries. The Fund’s investment policies emphasize investments in companies determined by the Adviser to be undervalued relative to their peers, using a fundamental value approach. In selecting real estate equity securities, the Adviser’s research and investment process seeks to identify globally those companies where the magnitude and growth of cash flow streams have not been appropriately reflected in the price of the security. These securities may trade at a more attractive valuation than others that may have similar overall fundamentals. The Adviser’s fundamental research efforts are focused on forecasting the short and long-term normalized cash generation capability of real estate companies by isolating supply and demand for property types in local markets, determining the replacement value of properties, assessing future development opportunities, and normalizing capital structures of real estate companies. Currencies can have a dramatic impact on equity return, significantly adding to returns in some years and greatly diminishing them in others. The Adviser evaluates currency and equity positions separately and may seek to hedge the currency exposure resulting from securities positions when it finds the currency exposure unattractive. To hedge a portion of its currency risk, the Fund may from time to time invest in currency-related derivatives, including forward currency exchange contracts, futures, options on futures, swaps and options. The Adviser also may seek investment opportunities by taking long or short positions in currencies through the use of currency-related derivatives. The Fund invests in equity securities that include common stock, shares of beneficial interest of REITs, and securities with common stock characteristics, such as preferred stock or convertible securities (“real estate equity securities”). The Fund may enter into forward commitments and standby commitment agreements. The Fund may enter into other derivatives transactions, such as options, futures contracts, forwards, and swaps. The Fund 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 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 Fund’s portfolio from a decline in value, sometimes within certain ranges. The Fund may, at times, invest in shares of ETFs in lieu of making direct investments in equity securities. ETFs may provide more efficient and economical exposure to the type of companies and geographic locations in which the Fund seeks to invest than direct investments.
Strategy Portfolio Concentration [Text]	rr_StrategyPortfolioConcentration	Under normal circumstances, the Fund invests at least 80% of its net assets in the equity securities of real estate investment trusts, or REITs, and other real estate industry companies, such as real estate operating companies, or REOCs.
Risk [Heading]	rr_RiskHeading	PRINCIPAL RISKS
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	MARKET RISK: The value of the Fund’s investments will fluctuate as the stock or bond market fluctuates. The value of its investments may decline, sometimes rapidly and unpredictably, simply because of economic changes or other events that affect large portions of the market. INTEREST RATE RISK: Changes in interest rates will affect the value of investments in fixed-income securities. When interest rates rise, the value of investments in fixed-income securities tends to fall and this decrease in value may not be offset by higher income from new investments. Interest rate risk is generally greater for fixed-income securities with longer maturities or durations. CREDIT RISK: An issuer or guarantor of a fixed-income security, or the counterparty to a derivatives or other contract, may be unable or unwilling to make timely payments of interest or principal, or to otherwise honor its obligations. The issuer or guarantor may default, causing a loss of the full principal amount of a security. The degree of risk for a particular security may be reflected in its credit rating. There is the possibility that the credit rating of a fixed-income security may be downgraded after purchase, which may adversely affect the value of the security. Investments in fixed-income securities with lower ratings tend to have a higher probability that an issuer will default or fail to meet its payment obligations. REAL ESTATE RISK: The Fund’s investments in the real estate market have many of the same risks as direct ownership of real estate, including the risk that the value of real estate could decline due to a variety of factors that affect the real estate market generally. Investments in REITs may have additional risks. REITs are dependent on the capability of their managers, may have limited diversification, and could be significantly affected by changes in tax laws. FOREIGN (NON-U.S.) RISK: Investments in securities of non-U.S. issuers may involve more risk than those of U.S. issuers. These securities may fluctuate more widely in price and may be less liquid due to adverse market, economic, political, regulatory or other factors. CURRENCY RISK: Fluctuations in currency exchange rates may negatively affect the value of the Fund’s investments or reduce its returns. PREPAYMENT RISK: The value of mortgage-related or asset-backed securities may be particularly sensitive to changes in prevailing interest rates. Early payments of principal on some mortgage-related securities may occur during periods of falling mortgage interest rates and expose the Fund to a lower rate of return upon reinvestment of principal. Early payments associated with mortgage-related securities cause these securities to experience significantly greater price and yield volatility than is experienced by traditional fixed-income securities. During periods of rising interest rates, a reduction in prepayments may increase the effective life of mortgage-related securities, subjecting them to greater risk of decline in market value in response to rising interest rates. If the life of a mortgage-related security is inaccurately predicted, the Fund may not be able to realize the rate of return it expected. DERIVATIVES RISK: Derivatives may be illiquid, difficult to price, and leveraged so that small changes may produce disproportionate losses for the Fund, and may be subject to counterparty risk to a greater degree than more traditional investments. LEVERAGE RISK: When the Fund borrows money or otherwise leverages its portfolio, it may be more volatile because leverage tends to exaggerate the effect of any increase or decrease in the value of the Fund’s investments. The Fund may create leverage through the use of reverse repurchase agreements, forward commitments, or by borrowing money. MANAGEMENT RISK: The Fund is subject to management risk because it is an actively-managed investment fund. The Adviser will apply its investment techniques and risk analyses in making investment decisions for the Fund, but there is no guarantee that its techniques will produce the intended results. As with all investments, you may lose money by investing in the Fund.
Risk Lose Money [Text]	rr_RiskLoseMoney	As with all investments, you may lose money by investing in the Fund.
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 Fund by showing: how the Fund’s performance changed from year to year over ten years; and how the Fund’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 on the Fund’s website at www.AllianceBernstein.com (click on “Individuals--U.S.” then “Products & Performance”). The Fund’s past performance before and after taxes, of course, does not necessarily indicate how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	how the Fund’s performance changed from year to year over ten years; and how the Fund’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.AllianceBernstein.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’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 Fund’s Class A shares and do not reflect sales loads. If sales loads were reflected, returns would be less than those shown.
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	The annual returns in the bar chart are for the Fund’s Class A shares and do not reflect sales loads. If sales loads were reflected, returns would be less than those shown.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Calendar Year End (%) During the period shown in the bar chart, the Fund’s: BEST QUARTER WAS UP 28.75%, 2ND QUARTER, 2009; AND WORST QUARTER WAS DOWN -30.85%, 4TH QUARTER, 2008.
Performance Table Heading	rr_PerformanceTableHeading	PERFORMANCE TABLE AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, 2013)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	-Are estimates 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	Are not relevant to investors who hold fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	After-tax returns: -Are shown for Class A shares only and will vary for Class B, Class C and Advisor Class shares because these Classes have different expense ratios;
ALLIANCEBERNSTEIN GLOBAL REAL ESTATE INVESTMENT FUND, INC. | CLASS A
Risk/Return:	rr_RiskReturnAbstract
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	4.25%
Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)	rr_MaximumDeferredSalesChargeOverOther	none	[1]
Exchange Fee	rr_ExchangeFee	none
Management Fees	rr_ManagementFeesOverAssets	0.55%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.30%
Other Expenses: Transfer Agent	rr_Component1OtherExpensesOverAssets	0.19%
Other Expenses	rr_Component2OtherExpensesOverAssets	0.36%
Total Other Expenses	rr_OtherExpensesOverAssets	0.55%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.40%
After 1 Year	rr_ExpenseExampleYear01	561
After 3 Years	rr_ExpenseExampleYear03	848
After 5 Years	rr_ExpenseExampleYear05	1,157
After 10 Years	rr_ExpenseExampleYear10	2,030
2004	rr_AnnualReturn2004	34.80%
2005	rr_AnnualReturn2005	11.61%
2006	rr_AnnualReturn2006	34.60%
2007	rr_AnnualReturn2007	(9.07%)
2008	rr_AnnualReturn2008	(45.96%)
2009	rr_AnnualReturn2009	34.97%
2010	rr_AnnualReturn2010	18.29%
2011	rr_AnnualReturn2011	(8.10%)
2012	rr_AnnualReturn2012	29.15%
2013	rr_AnnualReturn2013	5.70%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	BEST QUARTER
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	28.75%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	WORST QUARTER
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(30.85%)
1 YEAR	rr_AverageAnnualReturnYear01	1.24%	[2]
5 YEARS	rr_AverageAnnualReturnYear05	13.91%	[2]
10 YEARS	rr_AverageAnnualReturnYear10	6.68%	[2]
ALLIANCEBERNSTEIN GLOBAL REAL ESTATE INVESTMENT FUND, INC. | CLASS B
Risk/Return:	rr_RiskReturnAbstract
Shareholder Fees Column [Text]	rr_ShareholderFeesColumnName	(NOT CURRENTLY OFFERED TO NEW INVESTORS)
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	4.00%	[3]
Exchange Fee	rr_ExchangeFee	none
Management Fees	rr_ManagementFeesOverAssets	0.55%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other Expenses: Transfer Agent	rr_Component1OtherExpensesOverAssets	0.23%
Other Expenses	rr_Component2OtherExpensesOverAssets	0.35%
Total Other Expenses	rr_OtherExpensesOverAssets	0.58%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.13%
After 1 Year	rr_ExpenseExampleYear01	616
After 3 Years	rr_ExpenseExampleYear03	866
After 5 Years	rr_ExpenseExampleYear05	1,143
After 10 Years	rr_ExpenseExampleYear10	2,273
After 1 Year	rr_ExpenseExampleNoRedemptionYear01	216
After 3 Years	rr_ExpenseExampleNoRedemptionYear03	666
After 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,143
After 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,273
1 YEAR	rr_AverageAnnualReturnYear01	0.86%
5 YEARS	rr_AverageAnnualReturnYear05	13.97%
10 YEARS	rr_AverageAnnualReturnYear10	6.46%
ALLIANCEBERNSTEIN GLOBAL REAL ESTATE INVESTMENT FUND, INC. | CLASS C
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	1.00%	[4]
Exchange Fee	rr_ExchangeFee	none
Management Fees	rr_ManagementFeesOverAssets	0.55%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other Expenses: Transfer Agent	rr_Component1OtherExpensesOverAssets	0.20%
Other Expenses	rr_Component2OtherExpensesOverAssets	0.36%
Total Other Expenses	rr_OtherExpensesOverAssets	0.56%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.11%
After 1 Year	rr_ExpenseExampleYear01	314
After 3 Years	rr_ExpenseExampleYear03	660
After 5 Years	rr_ExpenseExampleYear05	1,132
After 10 Years	rr_ExpenseExampleYear10	2,437
After 1 Year	rr_ExpenseExampleNoRedemptionYear01	214
After 3 Years	rr_ExpenseExampleNoRedemptionYear03	660
After 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,132
After 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,437
1 YEAR	rr_AverageAnnualReturnYear01	3.89%
5 YEARS	rr_AverageAnnualReturnYear05	14.05%
10 YEARS	rr_AverageAnnualReturnYear10	6.37%
ALLIANCEBERNSTEIN GLOBAL REAL ESTATE INVESTMENT FUND, INC. | ADVISOR 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
Exchange Fee	rr_ExchangeFee	none
Management Fees	rr_ManagementFeesOverAssets	0.55%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses: Transfer Agent	rr_Component1OtherExpensesOverAssets	0.19%
Other Expenses	rr_Component2OtherExpensesOverAssets	0.36%
Total Other Expenses	rr_OtherExpensesOverAssets	0.55%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.10%
After 1 Year	rr_ExpenseExampleYear01	112
After 3 Years	rr_ExpenseExampleYear03	350
After 5 Years	rr_ExpenseExampleYear05	607
After 10 Years	rr_ExpenseExampleYear10	1,341
1 YEAR	rr_AverageAnnualReturnYear01	5.97%
5 YEARS	rr_AverageAnnualReturnYear05	15.24%
10 YEARS	rr_AverageAnnualReturnYear10	7.49%
ALLIANCEBERNSTEIN GLOBAL REAL ESTATE INVESTMENT FUND, INC. | CLASS R
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
Exchange Fee	rr_ExchangeFee	none
Management Fees	rr_ManagementFeesOverAssets	0.55%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.50%
Other Expenses: Transfer Agent	rr_Component1OtherExpensesOverAssets	0.24%
Other Expenses	rr_Component2OtherExpensesOverAssets	0.36%
Total Other Expenses	rr_OtherExpensesOverAssets	0.60%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.65%
After 1 Year	rr_ExpenseExampleYear01	167
After 3 Years	rr_ExpenseExampleYear03	519
After 5 Years	rr_ExpenseExampleYear05	895
After 10 Years	rr_ExpenseExampleYear10	1,950
1 YEAR	rr_AverageAnnualReturnYear01	5.41%	[5]
5 YEARS	rr_AverageAnnualReturnYear05	14.65%	[5]
10 YEARS	rr_AverageAnnualReturnYear10	6.92%	[5]
Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 01, 2005	[5]
ALLIANCEBERNSTEIN GLOBAL REAL ESTATE INVESTMENT FUND, INC. | CLASS K
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
Exchange Fee	rr_ExchangeFee	none
Management Fees	rr_ManagementFeesOverAssets	0.55%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses: Transfer Agent	rr_Component1OtherExpensesOverAssets	0.19%
Other Expenses	rr_Component2OtherExpensesOverAssets	0.35%
Total Other Expenses	rr_OtherExpensesOverAssets	0.54%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.34%
After 1 Year	rr_ExpenseExampleYear01	136
After 3 Years	rr_ExpenseExampleYear03	425
After 5 Years	rr_ExpenseExampleYear05	734
After 10 Years	rr_ExpenseExampleYear10	1,613
1 YEAR	rr_AverageAnnualReturnYear01	5.67%	[5]
5 YEARS	rr_AverageAnnualReturnYear05	15.03%	[5]
10 YEARS	rr_AverageAnnualReturnYear10	7.23%	[5]
Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 01, 2005	[5]
ALLIANCEBERNSTEIN GLOBAL REAL ESTATE INVESTMENT FUND, INC. | CLASS I
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
Exchange Fee	rr_ExchangeFee	none
Management Fees	rr_ManagementFeesOverAssets	0.55%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses: Transfer Agent	rr_Component1OtherExpensesOverAssets	0.12%
Other Expenses	rr_Component2OtherExpensesOverAssets	0.36%
Total Other Expenses	rr_OtherExpensesOverAssets	0.48%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.03%
After 1 Year	rr_ExpenseExampleYear01	105
After 3 Years	rr_ExpenseExampleYear03	327
After 5 Years	rr_ExpenseExampleYear05	567
After 10 Years	rr_ExpenseExampleYear10	$ 1,256
1 YEAR	rr_AverageAnnualReturnYear01	6.01%	[5]
5 YEARS	rr_AverageAnnualReturnYear05	15.38%	[5]
10 YEARS	rr_AverageAnnualReturnYear10	7.57%	[5]
Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 01, 2005	[5]
ALLIANCEBERNSTEIN GLOBAL REAL ESTATE INVESTMENT FUND, INC. | Return After Taxes on Distributions | CLASS A
Risk/Return:	rr_RiskReturnAbstract
1 YEAR	rr_AverageAnnualReturnYear01	(0.30%)	[2]
5 YEARS	rr_AverageAnnualReturnYear05	12.26%	[2]
10 YEARS	rr_AverageAnnualReturnYear10	4.86%	[2]
ALLIANCEBERNSTEIN GLOBAL REAL ESTATE INVESTMENT FUND, INC. | Return After Taxes on Distributions and Sale of Fund Shares | CLASS A
Risk/Return:	rr_RiskReturnAbstract
1 YEAR	rr_AverageAnnualReturnYear01	0.80%	[2]
5 YEARS	rr_AverageAnnualReturnYear05	10.53%	[2]
10 YEARS	rr_AverageAnnualReturnYear10	5.34%	[2]
ALLIANCEBERNSTEIN GLOBAL REAL ESTATE INVESTMENT FUND, INC. | S&P 500 Index (reflects no deduction for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 YEAR	rr_AverageAnnualReturnYear01	32.39%
5 YEARS	rr_AverageAnnualReturnYear05	17.94%
10 YEARS	rr_AverageAnnualReturnYear10	7.41%
ALLIANCEBERNSTEIN GLOBAL REAL ESTATE INVESTMENT FUND, INC. | FTSE NAREIT Equity REIT Index (reflects no deduction for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 YEAR	rr_AverageAnnualReturnYear01	2.86%
5 YEARS	rr_AverageAnnualReturnYear05	16.90%
10 YEARS	rr_AverageAnnualReturnYear10	8.61%
ALLIANCEBERNSTEIN GLOBAL REAL ESTATE INVESTMENT FUND, INC. | MSCI World Index (net) (reflects no deduction for fees, expenses or taxes except the reinvestment of dividends net of non-U.S. withholding taxes)
Risk/Return:	rr_RiskReturnAbstract
1 YEAR	rr_AverageAnnualReturnYear01	26.68%
5 YEARS	rr_AverageAnnualReturnYear05	15.02%
10 YEARS	rr_AverageAnnualReturnYear10	6.98%
ALLIANCEBERNSTEIN GLOBAL REAL ESTATE INVESTMENT FUND, INC. | FTSE EPRA/NAREIT Developed Real Estate Index (reflects no deduction for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 YEAR	rr_AverageAnnualReturnYear01	4.39%
5 YEARS	rr_AverageAnnualReturnYear05	16.06%
10 YEARS	rr_AverageAnnualReturnYear10	8.78%

[1] Purchases of Class A shares in amounts of $1,000,000 or more, or by certain group retirement plans, may be subject to a 1%, 1-year CDSC which may be subject to waiver in certain circumstances.

[2] After-tax returns: -Are shown for Class A shares only and will vary for Class B, Class C and Advisor Class shares because these Classes have different expense ratios; -Are estimates 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 fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.

[3] Class B shares automatically convert to Class A shares after eight years. The CDSC decreases over time. For Class B shares the CDSC decreases 1.00% annually to 0% after the fourth year.

[4] For Class C shares, the CDSC is 0% after the first year.

[5] Inception dates: 3/1/05 for Class R, Class K and Class I shares. Performance information for periods prior to the inception of Class R, Class K and Class I shares is the performance of the Fund's Class A shares adjusted to reflect the higher expense ratio of Class R shares and the lower expense ratios of Class K and Class I shares, respectively.