485BPOS

As filed with the Securities and Exchange Commission on November 21, 2012

File Nos. 33-49530

811-6730

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933
Pre-Effective Amendment No.
Post-Effective Amendment No. 44	x

and/or

REGISTRATION STATEMENT

UNDER

THE INVESTMENT COMPANY ACT OF 1940

Amendment No. 46 x

ALLIANCEBERNSTEIN LARGE CAP GROWTH FUND, INC.

(Exact Name of Registrant as Specified in Charter)

1345 Avenue of the Americas,

New York, New York 10105

(Address of Principal Executive Office) (Zip Code)

Registrant’s Telephone Number, including Area Code:

(800) 221-5672

EMILIE D. WRAPP

AllianceBernstein L.P.

1345 Avenue of the Americas

New York, New York 10105

(Name and address of agent for service)

Copies of Communications to:

Kathleen K. Clarke

Seward & Kissel LLP

1200 G Street, NW

Suite 350

Washington, DC 20005

It is proposed that this filing will become effective (check appropriate box)

¨ immediately upon filing pursuant to paragraph (b)

x on November 21, 2012 pursuant to paragraph (b)

¨ 60 days after filing pursuant to paragraph (a)(1)

¨ on (date) pursuant to paragraph (a)(1)

¨ 75 days after filing pursuant to paragraph (a)(2)

¨ on (date) pursuant to paragraph (a)(2) of Rule 485.

If appropriate, check the following box:

¨ This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all of the requirements for effectiveness of this Amendment to its Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933 and has duly caused this Amendment to its Registration Statement to be signed on its behalf by the undersigned, duly authorized, in the City of New York and the State of New York, on the 21^st day of November, 2012.

ALLIANCEBERNSTEIN LARGE CAP GROWTH FUND, INC.
By:	Robert M. Keith*
	Robert M. Keith
	President

Pursuant to the requirements of the Securities Act of 1933, as amended, this Amendment to the Registration Statement has been signed below by the following persons in the capacities and on the date indicated.

	Signature	Title	Date
1.	Principal Executive Officer:
	Robert M. Keith* Robert M. Keith	President and Chief Executive Officer	November 21, 2012
2.	Principal Financial and Accounting Officer:
	/s/    Joseph J. Mantineo Joseph J. Mantineo	Treasurer and Chief Financial Officer	November 21, 2012
3.	All Directors
	John H. Dobkin* Michael J. Downey* William H. Foulk, Jr.* D. James Guzy* Nancy P. Jacklin* Robert M. Keith* Garry L. Moody* Marshall C. Turner, Jr.* Earl D. Weiner*
*By:	/s/    Stephen J. Laffey Stephen J. Laffey (Attorney-in-fact)		November 21, 2012

Index to Exhibits

Exhibit No.	Description of Exhibits
EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Taxonomy Extension Schema Document
EX-101.CALC	XBRL Taxonomy Extension Calculation Linkbase
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-101.LAB	XBRL Taxonomy Extension Labels Linkbase
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

ALLIANCEBERNSTEIN LARGE CAP GROWTH FUND INC

Prospectus Date

rr_ProspectusDate

Nov. 01, 2012

ALLIANCEBERNSTEIN LARGE CAP GROWTH FUND INC

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

ALLIANCEBERNSTEIN LARGE CAP GROWTH 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 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 53 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)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

November 1, 2013

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 95% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

95.00%

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, that the Fund's operating expenses stay the same and that the fee waiver is in effect for only the first year. 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 equity securities of a limited number of large, carefully selected, high-quality U.S. companies. The Fund invests primarily in the domestic equity securities of companies selected by the Fund's Adviser for their growth potential within various market sectors. The Fund emphasizes investments in large, seasoned companies and normally invests in approximately 50-70 companies. Under normal circumstances, the Fund will invest at least 80% of its net assets in common stocks of large-capitalization companies.

For these purposes, "large-capitalization companies" are those that, at the time of investment, have market capitalizations within the range of market capitalizations of companies appearing in the Russell 1000 Growth Index. While the market capitalizations of companies in the Russell 1000 Growth Index ranged from approximately $1.4 billion to $540 billion as of June 30, 2012, the Fund normally will invest in common stocks of companies with market capitalizations of at least $5 billion at the time of purchase.

The Adviser expects that normally the Fund's portfolio will tend to emphasize investments in securities issued by U.S. companies, although it may invest in foreign securities.

This investment team allocates the Fund's investments among broad sector groups based on the fundamental company research conducted by the Adviser's large internal research staff, assessing the current and forecasted investment opportunities and conditions, as well as diversification and risk considerations. The investment team may vary the percentage allocations among market sectors and may change the market sectors in which the Fund invests as companies' potential for growth within a sector matures and new trends for growth emerge.

The Adviser's research focus is in companies with high sustainable growth prospects, high or improving return on invested capital, transparent business models, and strong and lasting competitive advantages.

The Fund may, at times, invest in shares of ETFs in lieu of making direct investments in securities. ETFs may provide more efficient and economical exposure to the types of companies and geographic locations in which the Fund seeks to invest than direct investments.

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 indexes, futures contracts (including futures contracts on individual securities and stock indexes) 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.

Risk [Heading]

rr_RiskHeading

PRINCIPAL RISKS

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

• MARKET RISK: The value of the Fund's assets 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 growth, may underperform the market generally.

• FOCUSED PORTFOLIO RISK: Investments in a limited number of companies may have more risk because changes in the value of a single security may have a more significant effect, either negative or positive, on the Fund's net asset value or, NAV.

• 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.

• DERIVATIVES RISK: Investments in 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.

• 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 "Pricing & 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. Through September 30, 2012, the year-to-date unannualized return for Class A shares was 20.24%.

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.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the period shown in the bar chart, the Fund's:

BEST QUARTER WAS UP 16.51%, 3RD QUARTER, 2009; AND WORST QUARTER WAS DOWN
-16.39%, 2ND QUARTER, 2002.

Performance Table Heading

rr_PerformanceTableHeading

PERFORMANCE TABLE
AVERAGE ANNUAL TOTAL RETURNS

(For the periods ended December 31, 2011)

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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;

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

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 LARGE CAP GROWTH 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_MaximumDeferredSalesChargeOverOfferingPrice

none

^[1]

Exchange Fee

rr_ExchangeFee

none

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.30%

Other Expenses: Transfer Agent

rr_Component1OtherExpensesOverAssets

0.27%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.05%

Total Other Expenses

rr_OtherExpensesOverAssets

0.32%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.37%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.12%)

^[2]

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

1.25%

^[2]

After 1 Year

rr_ExpenseExampleYear01

547

After 3 Years

rr_ExpenseExampleYear03

829

After 5 Years

rr_ExpenseExampleYear05

1,132

After 10 Years

rr_ExpenseExampleYear10

1,991

2002

rr_AnnualReturn2002

(32.38%)

2003

rr_AnnualReturn2003

22.71%

2004

rr_AnnualReturn2004

8.19%

2005

rr_AnnualReturn2005

14.15%

2006

rr_AnnualReturn2006

(0.91%)

2007

rr_AnnualReturn2007

13.77%

2008

rr_AnnualReturn2008

(31.66%)

2009

rr_AnnualReturn2009

41.15%

2010

rr_AnnualReturn2010

9.41%

2011

rr_AnnualReturn2011

(0.89%)

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date unannualized return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2012

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

20.24%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

BEST QUARTER

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

16.51%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

WORST QUARTER

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2002

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(16.39%)

1 YEAR

rr_AverageAnnualReturnYear01

(5.10%)

^[3]

5 YEARS

rr_AverageAnnualReturnYear05

2.64%

^[3]

10 YEARS

rr_AverageAnnualReturnYear10

1.47%

^[3]

ALLIANCEBERNSTEIN LARGE CAP GROWTH 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_MaximumDeferredSalesChargeOverOfferingPrice

4.00%

^[4]

Exchange Fee

rr_ExchangeFee

none

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other Expenses: Transfer Agent

rr_Component1OtherExpensesOverAssets

0.38%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.05%

Total Other Expenses

rr_OtherExpensesOverAssets

0.43%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

2.18%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

none

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

2.18%

^[2]

After 1 Year

rr_ExpenseExampleYear01

621

After 3 Years

rr_ExpenseExampleYear03

882

After 5 Years

rr_ExpenseExampleYear05

1,169

After 10 Years

rr_ExpenseExampleYear10

2,308

After 1 Year

rr_ExpenseExampleNoRedemptionYear01

221

After 3 Years

rr_ExpenseExampleNoRedemptionYear03

682

After 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,169

After 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,308

1 YEAR

rr_AverageAnnualReturnYear01

(5.71%)

5 YEARS

rr_AverageAnnualReturnYear05

2.66%

10 YEARS

rr_AverageAnnualReturnYear10

1.28%

ALLIANCEBERNSTEIN LARGE CAP GROWTH 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_MaximumDeferredSalesChargeOverOfferingPrice

1.00%

^[5]

Exchange Fee

rr_ExchangeFee

none

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other Expenses: Transfer Agent

rr_Component1OtherExpensesOverAssets

0.31%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.05%

Total Other Expenses

rr_OtherExpensesOverAssets

0.36%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

2.11%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

none

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

2.11%

^[2]

After 1 Year

rr_ExpenseExampleYear01

314

After 3 Years

rr_ExpenseExampleYear03

661

After 5 Years

rr_ExpenseExampleYear05

1,134

After 10 Years

rr_ExpenseExampleYear10

2,441

After 1 Year

rr_ExpenseExampleNoRedemptionYear01

214

After 3 Years

rr_ExpenseExampleNoRedemptionYear03

661

After 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,134

After 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,441

1 YEAR

rr_AverageAnnualReturnYear01

(2.75%)

5 YEARS

rr_AverageAnnualReturnYear05

2.71%

10 YEARS

rr_AverageAnnualReturnYear10

1.13%

ALLIANCEBERNSTEIN LARGE CAP GROWTH FUND INC | ADVISOR CLASS SHARES

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_MaximumDeferredSalesChargeOverOfferingPrice

none

Exchange Fee

rr_ExchangeFee

none

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses: Transfer Agent

rr_Component1OtherExpensesOverAssets

0.26%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.06%

Total Other Expenses

rr_OtherExpensesOverAssets

0.32%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.07%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

none

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

1.07%

^[2]

After 1 Year

rr_ExpenseExampleYear01

109

After 3 Years

rr_ExpenseExampleYear03

340

After 5 Years

rr_ExpenseExampleYear05

590

After 10 Years

rr_ExpenseExampleYear10

1,306

1 YEAR

rr_AverageAnnualReturnYear01

(0.73%)

5 YEARS

rr_AverageAnnualReturnYear05

3.78%

10 YEARS

rr_AverageAnnualReturnYear10

2.18%

ALLIANCEBERNSTEIN LARGE CAP GROWTH 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_MaximumDeferredSalesChargeOverOfferingPrice

none

Exchange Fee

rr_ExchangeFee

none

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other Expenses: Transfer Agent

rr_Component1OtherExpensesOverAssets

0.26%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.05%

Total Other Expenses

rr_OtherExpensesOverAssets

0.31%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.56%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

none

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

1.56%

^[2]

After 1 Year

rr_ExpenseExampleYear01

159

After 3 Years

rr_ExpenseExampleYear03

493

After 5 Years

rr_ExpenseExampleYear05

850

After 10 Years

rr_ExpenseExampleYear10

1,856

1 YEAR

rr_AverageAnnualReturnYear01

(1.18%)

^[6]

5 YEARS

rr_AverageAnnualReturnYear05

3.39%

^[6]

10 YEARS

rr_AverageAnnualReturnYear10

1.76%

^[6]

Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 03, 2003

^[6]

ALLIANCEBERNSTEIN LARGE CAP GROWTH 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_MaximumDeferredSalesChargeOverOfferingPrice

none

Exchange Fee

rr_ExchangeFee

none

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses: Transfer Agent

rr_Component1OtherExpensesOverAssets

0.20%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.05%

Total Other Expenses

rr_OtherExpensesOverAssets

0.25%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.25%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

none

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

1.25%

^[2]

After 1 Year

rr_ExpenseExampleYear01

127

After 3 Years

rr_ExpenseExampleYear03

397

After 5 Years

rr_ExpenseExampleYear05

686

After 10 Years

rr_ExpenseExampleYear10

1,511

1 YEAR

rr_AverageAnnualReturnYear01

(0.92%)

^[6]

5 YEARS

rr_AverageAnnualReturnYear05

3.69%

^[6]

10 YEARS

rr_AverageAnnualReturnYear10

2.06%

^[6]

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 01, 2005

^[6]

ALLIANCEBERNSTEIN LARGE CAP GROWTH 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_MaximumDeferredSalesChargeOverOfferingPrice

none

Exchange Fee

rr_ExchangeFee

none

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses: Transfer Agent

rr_Component1OtherExpensesOverAssets

0.07%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.05%

Total Other Expenses

rr_OtherExpensesOverAssets

0.12%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.87%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

none

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

0.87%

^[2]

After 1 Year

rr_ExpenseExampleYear01

89

After 3 Years

rr_ExpenseExampleYear03

278

After 5 Years

rr_ExpenseExampleYear05

482

After 10 Years

rr_ExpenseExampleYear10

1,073

1 YEAR

rr_AverageAnnualReturnYear01

(0.58%)

^[6]

5 YEARS

rr_AverageAnnualReturnYear05

4.06%

^[6]

10 YEARS

rr_AverageAnnualReturnYear10

2.40%

^[6]

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 01, 2005

^[6]

ALLIANCEBERNSTEIN LARGE CAP GROWTH FUND INC | Return After Taxes on Distributions | CLASS A

Risk/Return:

rr_RiskReturnAbstract

1 YEAR

rr_AverageAnnualReturnYear01

(5.10%)

^[3]

5 YEARS

rr_AverageAnnualReturnYear05

2.64%

^[3]

10 YEARS

rr_AverageAnnualReturnYear10

1.47%

^[3]

ALLIANCEBERNSTEIN LARGE CAP GROWTH FUND INC | Return After Taxes on Distributions and Sale of Fund Shares | CLASS A

Risk/Return:

rr_RiskReturnAbstract

1 YEAR

rr_AverageAnnualReturnYear01

(3.32%)

^[3]

5 YEARS

rr_AverageAnnualReturnYear05

2.26%

^[3]

10 YEARS

rr_AverageAnnualReturnYear10

1.26%

^[3]

ALLIANCEBERNSTEIN LARGE CAP GROWTH FUND INC | Russell 1000 Growth Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 YEAR

rr_AverageAnnualReturnYear01

2.64%

5 YEARS

rr_AverageAnnualReturnYear05

2.50%

10 YEARS

rr_AverageAnnualReturnYear10

2.59%

[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] The fee waiver and/or expense reimbursement agreement will remain in effect until November 1, 2013 and will be automatically extended for one-year periods thereafter unless terminated by the Adviser upon 60 days' notice to the Fund 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 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 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 for Class R shares: 11/3/03, and for Class K and Class I shares: 3/1/05. 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 the Class R shares and the lower expense ratios of Class K and Class I shares, respectively.

XML

ALLIANCEBERNSTEIN LARGE CAP GROWTH FUND INC

ALLIANCEBERNSTEIN LARGE CAP GROWTH FUND

INVESTMENT OBJECTIVE

The Fund's investment objective is long-term growth of capital.

FEES AND EXPENSES OF THE FUND

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 53 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   (fees paid directly from your investment)

Shareholder Fees ALLIANCEBERNSTEIN LARGE CAP GROWTH FUND INC (USD $)	CLASS A SHARES		CLASS B SHARES		CLASS C SHARES		ADVISOR CLASS SHARES	CLASS R SHARES	CLASS K SHARES	CLASS I SHARES
Shareholder Fees Column [Text]			(NOT CURRENTLY OFFERED TO NEW INVESTORS)
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	4.25%		none		none		none	none	none	none
Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)	none	[1]	4.00%	[2]	1.00%	[3]	none	none	none	none
Exchange Fee	none		none		none		none	none	none	none

ANNUAL FUND OPERATING EXPENSES   (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses ALLIANCEBERNSTEIN LARGE CAP GROWTH FUND INC		CLASS A		CLASS B	CLASS C	ADVISOR CLASS	CLASS R	CLASS K	CLASS I
Management Fees		0.75%		0.75%	0.75%	0.75%	0.75%	0.75%	0.75%
Distribution and/or Service (12b-1) Fees		0.30%		1.00%	1.00%	none	0.50%	0.25%	none
Other Expenses: Transfer Agent		0.27%		0.38%	0.31%	0.26%	0.26%	0.20%	0.07%
Other Expenses		0.05%		0.05%	0.05%	0.06%	0.05%	0.05%	0.05%
Total Other Expenses		0.32%		0.43%	0.36%	0.32%	0.31%	0.25%	0.12%
Total Annual Fund Operating Expenses		1.37%		2.18%	2.11%	1.07%	1.56%	1.25%	0.87%
Fee Waiver and/or Expense Reimbursement		(0.12%)	[1]	none	none	none	none	none	none
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	[1]	1.25%		2.18%	2.11%	1.07%	1.56%	1.25%	0.87%

EXAMPLES

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 Fund's operating expenses stay the same and that the fee waiver is in effect for only the first year. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example ALLIANCEBERNSTEIN LARGE CAP GROWTH FUND INC (USD $)	CLASS A	CLASS B	CLASS C	ADVISOR CLASS	CLASS R	CLASS K	CLASS I
After 1 Year	547	621	314	109	159	127	89
After 3 Years	829	882	661	340	493	397	278
After 5 Years	1,132	1,169	1,134	590	850	686	482
After 10 Years	1,991	2,308	2,441	1,306	1,856	1,511	1,073

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:

Expense Example, No Redemption ALLIANCEBERNSTEIN LARGE CAP GROWTH FUND INC (USD $)	CLASS B	CLASS C
After 1 Year	221	214
After 3 Years	682	661
After 5 Years	1,169	1,134
After 10 Years	2,308	2,441

PORTFOLIO TURNOVER

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 95% of the average value of its portfolio.

PRINCIPAL STRATEGIES

The Fund invests primarily in equity securities of a limited number of large, carefully selected, high-quality U.S. companies. The Fund invests primarily in the domestic equity securities of companies selected by the Fund's Adviser for their growth potential within various market sectors. The Fund emphasizes investments in large, seasoned companies and normally invests in approximately 50-70 companies. Under normal circumstances, the Fund will invest at least 80% of its net assets in common stocks of large-capitalization companies.

For these purposes, "large-capitalization companies" are those that, at the time of investment, have market capitalizations within the range of market capitalizations of companies appearing in the Russell 1000 Growth Index. While the market capitalizations of companies in the Russell 1000 Growth Index ranged from approximately $1.4 billion to $540 billion as of June 30, 2012, the Fund normally will invest in common stocks of companies with market capitalizations of at least $5 billion at the time of purchase.

The Adviser expects that normally the Fund's portfolio will tend to emphasize investments in securities issued by U.S. companies, although it may invest in foreign securities.

This investment team allocates the Fund's investments among broad sector groups based on the fundamental company research conducted by the Adviser's large internal research staff, assessing the current and forecasted investment opportunities and conditions, as well as diversification and risk considerations. The investment team may vary the percentage allocations among market sectors and may change the market sectors in which the Fund invests as companies' potential for growth within a sector matures and new trends for growth emerge.

The Adviser's research focus is in companies with high sustainable growth prospects, high or improving return on invested capital, transparent business models, and strong and lasting competitive advantages.

The Fund may, at times, invest in shares of ETFs in lieu of making direct investments in securities. ETFs may provide more efficient and economical exposure to the types of companies and geographic locations in which the Fund seeks to invest than direct investments.

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 indexes, futures contracts (including futures contracts on individual securities and stock indexes) 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.

PRINCIPAL RISKS

• MARKET RISK: The value of the Fund's assets 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 growth, may underperform the market generally.

• FOCUSED PORTFOLIO RISK: Investments in a limited number of companies may have more risk because changes in the value of a single security may have a more significant effect, either negative or positive, on the Fund's net asset value or, NAV.

• 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.

• DERIVATIVES RISK: Investments in 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.

• 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.

BAR CHART AND PERFORMANCE INFORMATION

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 "Pricing & Performance").

The Fund's past performance before and after taxes, of course, does not necessarily indicate how it will perform in the future.

BAR CHART

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. Through September 30, 2012, the year-to-date unannualized return for Class A shares was 20.24%.

During the period shown in the bar chart, the Fund's:

BEST QUARTER WAS UP 16.51%, 3RD QUARTER, 2009; AND WORST QUARTER WAS DOWN
-16.39%, 2ND QUARTER, 2002.

PERFORMANCE TABLE
AVERAGE ANNUAL TOTAL RETURNS

(For the periods ended December 31, 2011)

Average Annual Total Returns ALLIANCEBERNSTEIN LARGE CAP GROWTH FUND INC		1 YEAR	5 YEARS	10 YEARS	Inception Date
CLASS A	[1]	(5.10%)	2.64%	1.47%
CLASS A Return After Taxes on Distributions	[1]	(5.10%)	2.64%	1.47%
CLASS A Return After Taxes on Distributions and Sale of Fund Shares	[1]	(3.32%)	2.26%	1.26%
CLASS B		(5.71%)	2.66%	1.28%
CLASS C		(2.75%)	2.71%	1.13%
ADVISOR CLASS		(0.73%)	3.78%	2.18%
CLASS R	[2]	(1.18%)	3.39%	1.76%	Nov. 03, 2003
CLASS K	[2]	(0.92%)	3.69%	2.06%	Mar. 01, 2005
CLASS I	[2]	(0.58%)	4.06%	2.40%	Mar. 01, 2005
Russell 1000 Growth Index (reflects no deduction for fees, expenses, or taxes)		2.64%	2.50%	2.59%

[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] 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.

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

[1] The fee waiver and/or expense reimbursement agreement will remain in effect until November 1, 2013 and will be automatically extended for one-year periods thereafter unless terminated by the Adviser upon 60 days' notice to the Fund prior to that date.

[1] 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 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 fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.

[2] Inception dates for Class R shares: 11/3/03, and for Class K and Class I shares: 3/1/05. 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 the Class R shares and the lower expense ratios of Class K and Class I shares, respectively.

XML

Document and Entity Information	12 Months Ended
	Nov. 01, 2012
Risk/Return:
Document Type	485BPOS
Document Period End Date	Jul. 31, 2012
Registrant Name	ALLIANCEBERNSTEIN LARGE CAP GROWTH FUND INC
Central Index Key	0000889508
Amendment Flag	false
Document Creation Date	Nov. 01, 2012
Document Effective Date	Nov. 01, 2012
Prospectus Date	Nov. 01, 2012

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	ALLIANCEBERNSTEIN LARGE CAP GROWTH FUND INC
Prospectus Date	rr_ProspectusDate	Nov. 01, 2012
Document Creation Date	dei_DocumentCreationDate	Nov. 01, 2012