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Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName AB GROWTH & INCOME FUND INC
Prospectus Date rr_ProspectusDate Feb. 27, 2015
AB GROWTH & INCOME FUND INC  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading AB GROWTH AND INCOME FUND
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock The Fund's investment objective is long-term growth of capital.
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 AB 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 53 of this Prospectus and in Purchase of Shares--Sales Charge Reduction Programs for Class A Shares on page 112 of the Fund's Statement of Additional Information ("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)
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination March 1, 2016
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 54% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 54.00%rr_PortfolioTurnoverRate
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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 contingent deferred sales charge, or 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 AB Mutual Funds.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount 100,000rr_ExpenseBreakpointMinimumInvestmentRequiredAmount
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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, that the fee waiver remains in effect as agreed upon 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 The Fund invests primarily in the equity securities of U.S. companies that the Adviser believes are undervalued, focusing on dividend-paying securities. The Adviser believes that, over time, a company's stock price will come to reflect its intrinsic economic value. The Fund may invest in companies of any size and in any industry.

The Adviser depends heavily upon the fundamental analysis and research of its large internal research staff in making investment decisions for the Fund. The research staff follows a primary research universe of approximately 500, largely U.S., companies. In determining a company's intrinsic economic value, the Adviser takes into account many fundamental and financial factors that it believes bear on the company's ability to perform in the future, including earnings growth, prospective cash flows, dividend growth and growth in book value. The Adviser then ranks each of the companies in its research universe in the relative order of disparity between their intrinsic economic values and their current stock prices, with companies with the greatest disparities receiving the highest rankings (i.e., being considered the most undervalued). The Adviser anticipates that the Fund's portfolio normally will include companies ranking in the top three deciles of the Adviser's valuation model.

The Adviser recognizes that the perception of what is a "value" stock is relative and the factors considered in determining whether a stock is a "value" stock may, and often will, have differing relative significance in different phases of an economic cycle. Also, at different times, and as a result of how individual companies are valued in the market, the Fund may be attracted to investments in companies with different market capitalizations (i.e., large-, mid- or small-capitalization) or companies engaged in particular types of business (e.g., banks and other financial institutions), although the Fund does not intend to concentrate in any particular industries or businesses. The Fund's portfolio emphasis upon particular industries or sectors will be a by-product of the stock selection process rather than the result of assigned targets or ranges.

The Fund may enter into 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.
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. It includes the risk that a particular style of investing, such as the Fund's value approach, may be underperforming the market generally.
  • 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.
  • 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.
  • INDUSTRY/SECTOR RISK: Investments in a particular industry or group of related industries may have more risk because market or economic factors affecting that industry could have a significant effect on the value of the Fund's investments.
  • 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 return 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.ABglobal.com (click on "Menu--Americas--Individual Investors--United States (US Citizens)", then "Investments--Fund 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 return for one, five and ten years compare to those of a broad-based securities market index.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.ABglobal.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 14.29%, 2ND QUARTER, 2009; AND WORST QUARTER WAS
DOWN -20.01%, 4TH QUARTER, 2008.
Performance Table Heading rr_PerformanceTableHeading PERFORMANCE TABLE
AVERAGE ANNUAL TOTAL RETURNS

(For the periods ended December 31, 2014)
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 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.
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;
AB GROWTH & INCOME 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%rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice
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Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOther none [1]
Exchange Fee rr_ExchangeFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 0.55%rr_ManagementFeesOverAssets
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Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.28%rr_DistributionAndService12b1FeesOverAssets
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Other Expenses: Transfer Agent rr_Component1OtherExpensesOverAssets 0.13%rr_Component1OtherExpensesOverAssets
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Other Expenses rr_Component2OtherExpensesOverAssets 0.04%rr_Component2OtherExpensesOverAssets
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Total Other Expenses rr_OtherExpensesOverAssets 0.17%rr_OtherExpensesOverAssets
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Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.00%rr_ExpensesOverAssets
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Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.05%)rr_FeeWaiverOrReimbursementOverAssets
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[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 0.95%rr_NetExpensesOverAssets
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After 1 Year rr_ExpenseExampleYear01 518rr_ExpenseExampleYear01
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After 3 Years rr_ExpenseExampleYear03 725rr_ExpenseExampleYear03
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After 5 Years rr_ExpenseExampleYear05 949rr_ExpenseExampleYear05
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After 10 Years rr_ExpenseExampleYear10 1,593rr_ExpenseExampleYear10
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2005 rr_AnnualReturn2005 3.78%rr_AnnualReturn2005
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2006 rr_AnnualReturn2006 16.93%rr_AnnualReturn2006
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2007 rr_AnnualReturn2007 5.51%rr_AnnualReturn2007
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2008 rr_AnnualReturn2008 (40.76%)rr_AnnualReturn2008
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2009 rr_AnnualReturn2009 20.93%rr_AnnualReturn2009
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2010 rr_AnnualReturn2010 13.13%rr_AnnualReturn2010
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2011 rr_AnnualReturn2011 5.58%rr_AnnualReturn2011
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2012 rr_AnnualReturn2012 17.53%rr_AnnualReturn2012
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2013 rr_AnnualReturn2013 34.28%rr_AnnualReturn2013
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2014 rr_AnnualReturn2014 8.84%rr_AnnualReturn2014
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Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel BEST QUARTER
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 14.29%rr_BarChartHighestQuarterlyReturn
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Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel WORST QUARTER
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (20.01%)rr_BarChartLowestQuarterlyReturn
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1 YEAR rr_AverageAnnualReturnYear01 4.16%rr_AverageAnnualReturnYear01
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5 YEARS rr_AverageAnnualReturnYear05 14.46%rr_AverageAnnualReturnYear05
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10 YEARS rr_AverageAnnualReturnYear10 6.05%rr_AverageAnnualReturnYear10
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[3]
AB GROWTH & INCOME 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%rr_MaximumDeferredSalesChargeOverOther
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Exchange Fee rr_ExchangeFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 0.55%rr_ManagementFeesOverAssets
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Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%rr_DistributionAndService12b1FeesOverAssets
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Other Expenses: Transfer Agent rr_Component1OtherExpensesOverAssets 0.16%rr_Component1OtherExpensesOverAssets
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Other Expenses rr_Component2OtherExpensesOverAssets 0.04%rr_Component2OtherExpensesOverAssets
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Total Other Expenses rr_OtherExpensesOverAssets 0.20%rr_OtherExpensesOverAssets
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Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.75%rr_ExpensesOverAssets
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Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.10%)rr_FeeWaiverOrReimbursementOverAssets
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[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 1.65%rr_NetExpensesOverAssets
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After 1 Year rr_ExpenseExampleYear01 568rr_ExpenseExampleYear01
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After 3 Years rr_ExpenseExampleYear03 741rr_ExpenseExampleYear03
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After 5 Years rr_ExpenseExampleYear05 940rr_ExpenseExampleYear05
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After 10 Years rr_ExpenseExampleYear10 1,856rr_ExpenseExampleYear10
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After 1 Year rr_ExpenseExampleNoRedemptionYear01 168rr_ExpenseExampleNoRedemptionYear01
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After 3 Years rr_ExpenseExampleNoRedemptionYear03 541rr_ExpenseExampleNoRedemptionYear03
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After 5 Years rr_ExpenseExampleNoRedemptionYear05 940rr_ExpenseExampleNoRedemptionYear05
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After 10 Years rr_ExpenseExampleNoRedemptionYear10 1,856rr_ExpenseExampleNoRedemptionYear10
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1 YEAR rr_AverageAnnualReturnYear01 4.03%rr_AverageAnnualReturnYear01
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5 YEARS rr_AverageAnnualReturnYear05 14.55%rr_AverageAnnualReturnYear05
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10 YEARS rr_AverageAnnualReturnYear10 5.85%rr_AverageAnnualReturnYear10
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AB GROWTH & INCOME 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%rr_MaximumDeferredSalesChargeOverOther
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[5]
Exchange Fee rr_ExchangeFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 0.55%rr_ManagementFeesOverAssets
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Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%rr_DistributionAndService12b1FeesOverAssets
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Other Expenses: Transfer Agent rr_Component1OtherExpensesOverAssets 0.13%rr_Component1OtherExpensesOverAssets
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Other Expenses rr_Component2OtherExpensesOverAssets 0.04%rr_Component2OtherExpensesOverAssets
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Total Other Expenses rr_OtherExpensesOverAssets 0.17%rr_OtherExpensesOverAssets
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Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.72%rr_ExpensesOverAssets
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Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.07%)rr_FeeWaiverOrReimbursementOverAssets
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[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 1.65%rr_NetExpensesOverAssets
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After 1 Year rr_ExpenseExampleYear01 268rr_ExpenseExampleYear01
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After 3 Years rr_ExpenseExampleYear03 535rr_ExpenseExampleYear03
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After 5 Years rr_ExpenseExampleYear05 927rr_ExpenseExampleYear05
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After 10 Years rr_ExpenseExampleYear10 2,024rr_ExpenseExampleYear10
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After 1 Year rr_ExpenseExampleNoRedemptionYear01 168rr_ExpenseExampleNoRedemptionYear01
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After 3 Years rr_ExpenseExampleNoRedemptionYear03 535rr_ExpenseExampleNoRedemptionYear03
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After 5 Years rr_ExpenseExampleNoRedemptionYear05 927rr_ExpenseExampleNoRedemptionYear05
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After 10 Years rr_ExpenseExampleNoRedemptionYear10 2,024rr_ExpenseExampleNoRedemptionYear10
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1 YEAR rr_AverageAnnualReturnYear01 7.10%rr_AverageAnnualReturnYear01
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= agifi_C000027913Member
5 YEARS rr_AverageAnnualReturnYear05 14.57%rr_AverageAnnualReturnYear05
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027913Member
10 YEARS rr_AverageAnnualReturnYear10 5.74%rr_AverageAnnualReturnYear10
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027913Member
AB GROWTH & INCOME 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_ExchangeFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 0.55%rr_ManagementFeesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027914Member
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses: Transfer Agent rr_Component1OtherExpensesOverAssets 0.10%rr_Component1OtherExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027914Member
Other Expenses rr_Component2OtherExpensesOverAssets 0.03%rr_Component2OtherExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027914Member
Total Other Expenses rr_OtherExpensesOverAssets 0.13%rr_OtherExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027914Member
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.68%rr_ExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027914Member
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.03%)rr_FeeWaiverOrReimbursementOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027914Member
[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 0.65%rr_NetExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027914Member
After 1 Year rr_ExpenseExampleYear01 66rr_ExpenseExampleYear01
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027914Member
After 3 Years rr_ExpenseExampleYear03 215rr_ExpenseExampleYear03
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027914Member
After 5 Years rr_ExpenseExampleYear05 376rr_ExpenseExampleYear05
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027914Member
After 10 Years rr_ExpenseExampleYear10 844rr_ExpenseExampleYear10
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027914Member
1 YEAR rr_AverageAnnualReturnYear01 9.18%rr_AverageAnnualReturnYear01
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027914Member
5 YEARS rr_AverageAnnualReturnYear05 15.75%rr_AverageAnnualReturnYear05
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027914Member
10 YEARS rr_AverageAnnualReturnYear10 6.82%rr_AverageAnnualReturnYear10
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027914Member
AB GROWTH & INCOME 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_ExchangeFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 0.55%rr_ManagementFeesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027915Member
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.50%rr_DistributionAndService12b1FeesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027915Member
Other Expenses: Transfer Agent rr_Component1OtherExpensesOverAssets 0.25%rr_Component1OtherExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027915Member
Other Expenses rr_Component2OtherExpensesOverAssets 0.04%rr_Component2OtherExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027915Member
Total Other Expenses rr_OtherExpensesOverAssets 0.29%rr_OtherExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027915Member
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.34%rr_ExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027915Member
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.19%)rr_FeeWaiverOrReimbursementOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027915Member
[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 1.15%rr_NetExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027915Member
After 1 Year rr_ExpenseExampleYear01 117rr_ExpenseExampleYear01
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027915Member
After 3 Years rr_ExpenseExampleYear03 406rr_ExpenseExampleYear03
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027915Member
After 5 Years rr_ExpenseExampleYear05 716rr_ExpenseExampleYear05
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027915Member
After 10 Years rr_ExpenseExampleYear10 1,596rr_ExpenseExampleYear10
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027915Member
1 YEAR rr_AverageAnnualReturnYear01 8.53%rr_AverageAnnualReturnYear01
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027915Member
5 YEARS rr_AverageAnnualReturnYear05 15.20%rr_AverageAnnualReturnYear05
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027915Member
10 YEARS rr_AverageAnnualReturnYear10 6.26%rr_AverageAnnualReturnYear10
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027915Member
AB GROWTH & INCOME 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_ExchangeFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 0.55%rr_ManagementFeesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027916Member
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%rr_DistributionAndService12b1FeesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027916Member
Other Expenses: Transfer Agent rr_Component1OtherExpensesOverAssets 0.20%rr_Component1OtherExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027916Member
Other Expenses rr_Component2OtherExpensesOverAssets 0.04%rr_Component2OtherExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027916Member
Total Other Expenses rr_OtherExpensesOverAssets 0.24%rr_OtherExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027916Member
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.04%rr_ExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027916Member
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.14%)rr_FeeWaiverOrReimbursementOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027916Member
[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 0.90%rr_NetExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027916Member
After 1 Year rr_ExpenseExampleYear01 92rr_ExpenseExampleYear01
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027916Member
After 3 Years rr_ExpenseExampleYear03 317rr_ExpenseExampleYear03
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027916Member
After 5 Years rr_ExpenseExampleYear05 560rr_ExpenseExampleYear05
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027916Member
After 10 Years rr_ExpenseExampleYear10 1,258rr_ExpenseExampleYear10
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027916Member
1 YEAR rr_AverageAnnualReturnYear01 8.74%rr_AverageAnnualReturnYear01
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027916Member
[6]
5 YEARS rr_AverageAnnualReturnYear05 15.53%rr_AverageAnnualReturnYear05
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027916Member
[6]
10 YEARS rr_AverageAnnualReturnYear10 6.61%rr_AverageAnnualReturnYear10
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027916Member
[6]
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 01, 2005 [6]
AB GROWTH & INCOME 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_ExchangeFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 0.55%rr_ManagementFeesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027917Member
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses: Transfer Agent rr_Component1OtherExpensesOverAssets 0.07%rr_Component1OtherExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027917Member
Other Expenses rr_Component2OtherExpensesOverAssets 0.04%rr_Component2OtherExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027917Member
Total Other Expenses rr_OtherExpensesOverAssets 0.11%rr_OtherExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027917Member
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.66%rr_ExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027917Member
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.01%)rr_FeeWaiverOrReimbursementOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027917Member
[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 0.65%rr_NetExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027917Member
After 1 Year rr_ExpenseExampleYear01 66rr_ExpenseExampleYear01
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027917Member
After 3 Years rr_ExpenseExampleYear03 210rr_ExpenseExampleYear03
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027917Member
After 5 Years rr_ExpenseExampleYear05 367rr_ExpenseExampleYear05
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027917Member
After 10 Years rr_ExpenseExampleYear10 822rr_ExpenseExampleYear10
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027917Member
1 YEAR rr_AverageAnnualReturnYear01 9.11%rr_AverageAnnualReturnYear01
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027917Member
[6]
5 YEARS rr_AverageAnnualReturnYear05 15.87%rr_AverageAnnualReturnYear05
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027917Member
[6]
10 YEARS rr_AverageAnnualReturnYear10 6.95%rr_AverageAnnualReturnYear10
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000027917Member
[6]
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 01, 2005 [6]
AB GROWTH & INCOME FUND INC | CLASS Z  
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_ExchangeFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 0.55%rr_ManagementFeesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000132087Member
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses: Transfer Agent rr_Component1OtherExpensesOverAssets 0.02%rr_Component1OtherExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000132087Member
Other Expenses rr_Component2OtherExpensesOverAssets 0.04%rr_Component2OtherExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000132087Member
Total Other Expenses rr_OtherExpensesOverAssets 0.06%rr_OtherExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000132087Member
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.61%rr_ExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000132087Member
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets none [2],[7]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 0.61%rr_NetExpensesOverAssets
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000132087Member
After 1 Year rr_ExpenseExampleYear01 62rr_ExpenseExampleYear01
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000132087Member
After 3 Years rr_ExpenseExampleYear03 195rr_ExpenseExampleYear03
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000132087Member
After 5 Years rr_ExpenseExampleYear05 340rr_ExpenseExampleYear05
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000132087Member
After 10 Years rr_ExpenseExampleYear10 762rr_ExpenseExampleYear10
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000132087Member
1 YEAR rr_AverageAnnualReturnYear01 9.15%rr_AverageAnnualReturnYear01
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000132087Member
[6]
5 YEARS rr_AverageAnnualReturnYear05 15.81%rr_AverageAnnualReturnYear05
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000132087Member
[6]
10 YEARS rr_AverageAnnualReturnYear10 6.85%rr_AverageAnnualReturnYear10
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_ProspectusShareClassAxis
= agifi_C000132087Member
[6]
Inception Date rr_AverageAnnualReturnInceptionDate Oct. 15, 2013 [6]
AB GROWTH & INCOME FUND INC | Return After Taxes on Distributions | CLASS A  
Risk/Return: rr_RiskReturnAbstract  
1 YEAR rr_AverageAnnualReturnYear01 2.82%rr_AverageAnnualReturnYear01
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_PerformanceMeasureAxis
= rr_AfterTaxesOnDistributionsMember
/ rr_ProspectusShareClassAxis
= agifi_C000027911Member
[3]
5 YEARS rr_AverageAnnualReturnYear05 14.03%rr_AverageAnnualReturnYear05
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_PerformanceMeasureAxis
= rr_AfterTaxesOnDistributionsMember
/ rr_ProspectusShareClassAxis
= agifi_C000027911Member
[3]
10 YEARS rr_AverageAnnualReturnYear10 5.61%rr_AverageAnnualReturnYear10
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_PerformanceMeasureAxis
= rr_AfterTaxesOnDistributionsMember
/ rr_ProspectusShareClassAxis
= agifi_C000027911Member
[3]
AB GROWTH & INCOME FUND INC | Return After Taxes on Distributions and Sale of Fund Shares | CLASS A  
Risk/Return: rr_RiskReturnAbstract  
1 YEAR rr_AverageAnnualReturnYear01 3.45%rr_AverageAnnualReturnYear01
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_PerformanceMeasureAxis
= rr_AfterTaxesOnDistributionsAndSalesMember
/ rr_ProspectusShareClassAxis
= agifi_C000027911Member
[3]
5 YEARS rr_AverageAnnualReturnYear05 11.65%rr_AverageAnnualReturnYear05
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_PerformanceMeasureAxis
= rr_AfterTaxesOnDistributionsAndSalesMember
/ rr_ProspectusShareClassAxis
= agifi_C000027911Member
[3]
10 YEARS rr_AverageAnnualReturnYear10 4.89%rr_AverageAnnualReturnYear10
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_PerformanceMeasureAxis
= rr_AfterTaxesOnDistributionsAndSalesMember
/ rr_ProspectusShareClassAxis
= agifi_C000027911Member
[3]
AB GROWTH & INCOME FUND INC | Russell 1000(TM) Value Index (reflects no deductions for fees, expenses or taxes)  
Risk/Return: rr_RiskReturnAbstract  
1 YEAR rr_AverageAnnualReturnYear01 13.45%rr_AverageAnnualReturnYear01
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_PerformanceMeasureAxis
= agifi_RussellTenHundredTmValueIndexMember
5 YEARS rr_AverageAnnualReturnYear05 15.42%rr_AverageAnnualReturnYear05
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_PerformanceMeasureAxis
= agifi_RussellTenHundredTmValueIndexMember
10 YEARS rr_AverageAnnualReturnYear10 7.30%rr_AverageAnnualReturnYear10
/ dei_LegalEntityAxis
= agifi_S000010080Member
/ rr_PerformanceMeasureAxis
= agifi_RussellTenHundredTmValueIndexMember
[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 contingent deferred sales charge, or CDSC, which may be subject to waiver in certain circumstances.
[2] The Fee Waiver and/or Expense Reimbursement will remain in effect until March 1, 2016 and will continue thereafter from year-to-year unless the Adviser provides notice of termination 60 days prior to that date.
[3] 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.
[4] 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.
[5] For Class C shares, the CDSC is 0% after the first year.
[6] Inception dates: 3/1/05 for Class K and Class I shares and 10/15/13 for Class Z shares. Performance information for periods prior to the inception of Class K, Class I and Class Z shares is the performance of the Fund's Class A shares adjusted to reflect the lower expense ratios of Class K, Class I and Class Z shares.
[7] Less than .01%.