Shareholder Report | 12 Months Ended | 109 Months Ended |
Jul. 31, 2024 USD ($) Holding | Jul. 31, 2024 USD ($) Holding |
Shareholder Report [Line Items] | | |
Document Type | N-CSR | |
Amendment Flag | false | |
Registrant Name | AB LARGE CAP GROWTH FUND INC | |
Entity Central Index Key | 0000889508 | |
Entity Investment Company Type | N-1A | |
Document Period End Date | Jul. 31, 2024 | |
C000028342 | | |
Shareholder Report [Line Items] | | |
Fund Name | AB Large Cap Growth Fund | |
Class Name | Advisor Class | |
Trading Symbol | APGYX | |
Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB Large Cap Growth Fund (the “Fund”) for the period of August 1, 2023 to July 31, 2024. | |
Shareholder Report Annual or Semi-Annual | Annual Shareholder Report | |
Additional Information [Text Block] | You can find additional information about the Fund at https://www.abfunds.com/link/BWM/APGYX-A. You can also request this information by contacting us at (800) 227 4618. | |
Additional Information Phone Number | (800) 227 4618 | |
Additional Information Website | https://www.abfunds.com/link/BWM/APGYX-A | |
Expenses [Text Block] | What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment) Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Advisor Class $63 0.56% | |
Expenses Paid, Amount | $ 63 | |
Expense Ratio, Percent | 0.56% | |
Performance Past Does Not Indicate Future [Text] | | |
Average Annual Return [Table Text Block] | 1 Year 5 Years 10 Years Advisor Class (without sales charges) 24.71 % 16.10 % 15.86 % Advisor Class (with sales charges) 24.71 % 16.10 % 15.86 % S&P 500 Index 22.15 % 15.00 % 13.15 % Russell 1000 Growth Index 26.94 % 18.41 % 16.31 % | |
No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption or sale of Fund shares. | |
AssetsNet | $ 27,359,472,511 | $ 27,359,472,511 |
Holdings Count | Holding | 54 | 54 |
Advisory Fees Paid, Amount | $ 114,043,490 | |
InvestmentCompanyPortfolioTurnover | 30% | |
Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $27,359,472,511 # of Portfolio Holdings 54 Portfolio Turnover Rate 30% Total Advisory Fees Paid $114,043,490 | |
Holdings [Text Block] | Sector Allocation Value Value Information Technology 34.5% Health Care 17.7% Communication Services 13.0% Consumer Discretionary 12.8% Industrials 6.9% Consumer Staples 6.5% Financials 4.2% Materials 1.5% Investment Companies 1.4% Short-Term Investments 1.4% Other assets less liabilities 0.1% | |
Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets NVIDIA Corp. $2,576,467,957 9.4 % Microsoft Corp. $2,451,761,093 9.0 % Amazon.com, Inc. $1,693,625,761 6.2 % Alphabet, Inc. - Class C $1,511,446,955 5.5 % Meta Platforms, Inc. - Class A $1,287,480,653 4.7 % Visa, Inc. - Class A $1,155,555,841 4.2 % Vertex Pharmaceuticals, Inc. $878,022,734 3.2 % Costco Wholesale Corp. $854,843,010 3.1 % Netflix, Inc. $770,668,133 2.8 % Monster Beverage Corp. $751,934,959 2.8 % Total $13,931,807,096 50.9 % | |
Material Fund Change [Text Block] | | |
C000028338 | | |
Shareholder Report [Line Items] | | |
Fund Name | AB Large Cap Growth Fund | |
Class Name | Class A | |
Trading Symbol | APGAX | |
Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB Large Cap Growth Fund (the “Fund”) for the period of August 1, 2023 to July 31, 2024. | |
Shareholder Report Annual or Semi-Annual | Annual Shareholder Report | |
Additional Information [Text Block] | You can find additional information about the Fund at https://www.abfunds.com/link/BWM/APGAX-A. You can also request this information by contacting us at (800) 227 4618. | |
Additional Information Phone Number | (800) 227 4618 | |
Additional Information Website | https://www.abfunds.com/link/BWM/APGAX-A | |
Expenses [Text Block] | What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment) Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A $91 0.81% | |
Expenses Paid, Amount | $ 91 | |
Expense Ratio, Percent | 0.81% | |
Performance Past Does Not Indicate Future [Text] | | |
Average Annual Return [Table Text Block] | 1 Year 5 Years 10 Years Class A (without sales charges) 24.40 % 15.81 % 15.57 % Class A (with sales charges) 19.12 % 14.81 % 15.07 % S&P 500 Index 22.15 % 15.00 % 13.15 % Russell 1000 Growth Index 26.94 % 18.41 % 16.31 % | |
No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption or sale of Fund shares. | |
AssetsNet | $ 27,359,472,511 | $ 27,359,472,511 |
Holdings Count | Holding | 54 | 54 |
Advisory Fees Paid, Amount | $ 114,043,490 | |
InvestmentCompanyPortfolioTurnover | 30% | |
Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $27,359,472,511 # of Portfolio Holdings 54 Portfolio Turnover Rate 30% Total Advisory Fees Paid $114,043,490 | |
Holdings [Text Block] | Sector Allocation Value Value Information Technology 34.5% Health Care 17.7% Communication Services 13.0% Consumer Discretionary 12.8% Industrials 6.9% Consumer Staples 6.5% Financials 4.2% Materials 1.5% Investment Companies 1.4% Short-Term Investments 1.4% Other assets less liabilities 0.1% | |
Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets NVIDIA Corp. $2,576,467,957 9.4 % Microsoft Corp. $2,451,761,093 9.0 % Amazon.com, Inc. $1,693,625,761 6.2 % Alphabet, Inc. - Class C $1,511,446,955 5.5 % Meta Platforms, Inc. - Class A $1,287,480,653 4.7 % Visa, Inc. - Class A $1,155,555,841 4.2 % Vertex Pharmaceuticals, Inc. $878,022,734 3.2 % Costco Wholesale Corp. $854,843,010 3.1 % Netflix, Inc. $770,668,133 2.8 % Monster Beverage Corp. $751,934,959 2.8 % Total $13,931,807,096 50.9 % | |
Material Fund Change [Text Block] | | |
C000028341 | | |
Shareholder Report [Line Items] | | |
Fund Name | AB Large Cap Growth Fund | |
Class Name | Class C | |
Trading Symbol | APGCX | |
Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB Large Cap Growth Fund (the “Fund”) for the period of August 1, 2023 to July 31, 2024. | |
Shareholder Report Annual or Semi-Annual | Annual Shareholder Report | |
Additional Information [Text Block] | You can find additional information about the Fund at https://www.abfunds.com/link/BWM/APGCX-A. You can also request this information by contacting us at (800) 227 4618. | |
Additional Information Phone Number | (800) 227 4618 | |
Additional Information Website | https://www.abfunds.com/link/BWM/APGCX-A | |
Expenses [Text Block] | What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment) Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class C $174 1.56% | |
Expenses Paid, Amount | $ 174 | |
Expense Ratio, Percent | 1.56% | |
Performance Past Does Not Indicate Future [Text] | | |
Average Annual Return [Table Text Block] | 1 Year 5 Years 10 Years Class C (without sales charges) 23.49 % 14.95 % 14.71 % Class C (with sales charges) 22.49 % 14.95 % 14.71 % S&P 500 Index 22.15 % 15.00 % 13.15 % Russell 1000 Growth Index 26.94 % 18.41 % 16.31 % | |
No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption or sale of Fund shares. | |
AssetsNet | $ 27,359,472,511 | $ 27,359,472,511 |
Holdings Count | Holding | 54 | 54 |
Advisory Fees Paid, Amount | $ 114,043,490 | |
InvestmentCompanyPortfolioTurnover | 30% | |
Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $27,359,472,511 # of Portfolio Holdings 54 Portfolio Turnover Rate 30% Total Advisory Fees Paid $114,043,490 | |
Holdings [Text Block] | Sector Allocation Value Value Information Technology 34.5% Health Care 17.7% Communication Services 13.0% Consumer Discretionary 12.8% Industrials 6.9% Consumer Staples 6.5% Financials 4.2% Materials 1.5% Investment Companies 1.4% Short-Term Investments 1.4% Other assets less liabilities 0.1% | |
Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets NVIDIA Corp. $2,576,467,957 9.4 % Microsoft Corp. $2,451,761,093 9.0 % Amazon.com, Inc. $1,693,625,761 6.2 % Alphabet, Inc. - Class C $1,511,446,955 5.5 % Meta Platforms, Inc. - Class A $1,287,480,653 4.7 % Visa, Inc. - Class A $1,155,555,841 4.2 % Vertex Pharmaceuticals, Inc. $878,022,734 3.2 % Costco Wholesale Corp. $854,843,010 3.1 % Netflix, Inc. $770,668,133 2.8 % Monster Beverage Corp. $751,934,959 2.8 % Total $13,931,807,096 50.9 % | |
Material Fund Change [Text Block] | | |
C000028345 | | |
Shareholder Report [Line Items] | | |
Fund Name | AB Large Cap Growth Fund | |
Class Name | Class I | |
Trading Symbol | ALLIX | |
Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB Large Cap Growth Fund (the “Fund”) for the period of August 1, 2023 to July 31, 2024. | |
Shareholder Report Annual or Semi-Annual | Annual Shareholder Report | |
Additional Information [Text Block] | You can find additional information about the Fund at https://www.abfunds.com/link/BWM/ALLIX-A. You can also request this information by contacting us at (800) 227 4618. | |
Additional Information Phone Number | (800) 227 4618 | |
Additional Information Website | https://www.abfunds.com/link/BWM/ALLIX-A | |
Expenses [Text Block] | What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment) Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $67 0.60% | |
Expenses Paid, Amount | $ 67 | |
Expense Ratio, Percent | 0.60% | |
Performance Past Does Not Indicate Future [Text] | | |
Average Annual Return [Table Text Block] | 1 Year 5 Years 10 Years Class I (without sales charges) 24.68 % 16.07 % 15.87 % Class I (with sales charges) 24.68 % 16.07 % 15.87 % S&P 500 Index 22.15 % 15.00 % 13.15 % Russell 1000 Growth Index 26.94 % 18.41 % 16.31 % | |
No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption or sale of Fund shares. | |
AssetsNet | $ 27,359,472,511 | $ 27,359,472,511 |
Holdings Count | Holding | 54 | 54 |
Advisory Fees Paid, Amount | $ 114,043,490 | |
InvestmentCompanyPortfolioTurnover | 30% | |
Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $27,359,472,511 # of Portfolio Holdings 54 Portfolio Turnover Rate 30% Total Advisory Fees Paid $114,043,490 | |
Holdings [Text Block] | Sector Allocation Value Value Information Technology 34.5% Health Care 17.7% Communication Services 13.0% Consumer Discretionary 12.8% Industrials 6.9% Consumer Staples 6.5% Financials 4.2% Materials 1.5% Investment Companies 1.4% Short-Term Investments 1.4% Other assets less liabilities 0.1% | |
Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets NVIDIA Corp. $2,576,467,957 9.4 % Microsoft Corp. $2,451,761,093 9.0 % Amazon.com, Inc. $1,693,625,761 6.2 % Alphabet, Inc. - Class C $1,511,446,955 5.5 % Meta Platforms, Inc. - Class A $1,287,480,653 4.7 % Visa, Inc. - Class A $1,155,555,841 4.2 % Vertex Pharmaceuticals, Inc. $878,022,734 3.2 % Costco Wholesale Corp. $854,843,010 3.1 % Netflix, Inc. $770,668,133 2.8 % Monster Beverage Corp. $751,934,959 2.8 % Total $13,931,807,096 50.9 % | |
Material Fund Change [Text Block] | | |
C000028344 | | |
Shareholder Report [Line Items] | | |
Fund Name | AB Large Cap Growth Fund | |
Class Name | Class K | |
Trading Symbol | ALCKX | |
Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB Large Cap Growth Fund (the “Fund”) for the period of August 1, 2023 to July 31, 2024. | |
Shareholder Report Annual or Semi-Annual | Annual Shareholder Report | |
Additional Information [Text Block] | You can find additional information about the Fund at https://www.abfunds.com/link/BWM/ALCKX-A. You can also request this information by contacting us at (800) 227 4618. | |
Additional Information Phone Number | (800) 227 4618 | |
Additional Information Website | https://www.abfunds.com/link/BWM/ALCKX-A | |
Expenses [Text Block] | What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment) Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class K $102 0.91% | |
Expenses Paid, Amount | $ 102 | |
Expense Ratio, Percent | 0.91% | |
Performance Past Does Not Indicate Future [Text] | | |
Average Annual Return [Table Text Block] | 1 Year 5 Years 10 Years Class K (without sales charges) 24.29 % 15.69 % 15.47 % Class K (with sales charges) 24.29 % 15.69 % 15.47 % S&P 500 Index 22.15 % 15.00 % 13.15 % Russell 1000 Growth Index 26.94 % 18.41 % 16.31 % | |
No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption or sale of Fund shares. | |
AssetsNet | $ 27,359,472,511 | $ 27,359,472,511 |
Holdings Count | Holding | 54 | 54 |
Advisory Fees Paid, Amount | $ 114,043,490 | |
InvestmentCompanyPortfolioTurnover | 30% | |
Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $27,359,472,511 # of Portfolio Holdings 54 Portfolio Turnover Rate 30% Total Advisory Fees Paid $114,043,490 | |
Holdings [Text Block] | Sector Allocation Value Value Information Technology 34.5% Health Care 17.7% Communication Services 13.0% Consumer Discretionary 12.8% Industrials 6.9% Consumer Staples 6.5% Financials 4.2% Materials 1.5% Investment Companies 1.4% Short-Term Investments 1.4% Other assets less liabilities 0.1% | |
Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets NVIDIA Corp. $2,576,467,957 9.4 % Microsoft Corp. $2,451,761,093 9.0 % Amazon.com, Inc. $1,693,625,761 6.2 % Alphabet, Inc. - Class C $1,511,446,955 5.5 % Meta Platforms, Inc. - Class A $1,287,480,653 4.7 % Visa, Inc. - Class A $1,155,555,841 4.2 % Vertex Pharmaceuticals, Inc. $878,022,734 3.2 % Costco Wholesale Corp. $854,843,010 3.1 % Netflix, Inc. $770,668,133 2.8 % Monster Beverage Corp. $751,934,959 2.8 % Total $13,931,807,096 50.9 % | |
Material Fund Change [Text Block] | | |
C000028343 | | |
Shareholder Report [Line Items] | | |
Fund Name | AB Large Cap Growth Fund | |
Class Name | Class R | |
Trading Symbol | ABPRX | |
Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB Large Cap Growth Fund (the “Fund”) for the period of August 1, 2023 to July 31, 2024. | |
Shareholder Report Annual or Semi-Annual | Annual Shareholder Report | |
Additional Information [Text Block] | You can find additional information about the Fund at https://www.abfunds.com/link/BWM/ABPRX-A. You can also request this information by contacting us at (800) 227 4618. | |
Additional Information Phone Number | (800) 227 4618 | |
Additional Information Website | https://www.abfunds.com/link/BWM/ABPRX-A | |
Expenses [Text Block] | What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment) Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R $135 1.21% | |
Expenses Paid, Amount | $ 135 | |
Expense Ratio, Percent | 1.21% | |
Performance Past Does Not Indicate Future [Text] | | |
Average Annual Return [Table Text Block] | 1 Year 5 Years 10 Years Class R (without sales charges) 23.90 % 15.35 % 15.13 % Class R (with sales charges) 23.90 % 15.35 % 15.13 % S&P 500 Index 22.15 % 15.00 % 13.15 % Russell 1000 Growth Index 26.94 % 18.41 % 16.31 % | |
No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption or sale of Fund shares. | |
AssetsNet | $ 27,359,472,511 | $ 27,359,472,511 |
Holdings Count | Holding | 54 | 54 |
Advisory Fees Paid, Amount | $ 114,043,490 | |
InvestmentCompanyPortfolioTurnover | 30% | |
Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $27,359,472,511 # of Portfolio Holdings 54 Portfolio Turnover Rate 30% Total Advisory Fees Paid $114,043,490 | |
Holdings [Text Block] | Sector Allocation Value Value Information Technology 34.5% Health Care 17.7% Communication Services 13.0% Consumer Discretionary 12.8% Industrials 6.9% Consumer Staples 6.5% Financials 4.2% Materials 1.5% Investment Companies 1.4% Short-Term Investments 1.4% Other assets less liabilities 0.1% | |
Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets NVIDIA Corp. $2,576,467,957 9.4 % Microsoft Corp. $2,451,761,093 9.0 % Amazon.com, Inc. $1,693,625,761 6.2 % Alphabet, Inc. - Class C $1,511,446,955 5.5 % Meta Platforms, Inc. - Class A $1,287,480,653 4.7 % Visa, Inc. - Class A $1,155,555,841 4.2 % Vertex Pharmaceuticals, Inc. $878,022,734 3.2 % Costco Wholesale Corp. $854,843,010 3.1 % Netflix, Inc. $770,668,133 2.8 % Monster Beverage Corp. $751,934,959 2.8 % Total $13,931,807,096 50.9 % | |
Material Fund Change [Text Block] | | |
C000159956 | | |
Shareholder Report [Line Items] | | |
Fund Name | AB Large Cap Growth Fund | |
Class Name | Class Z | |
Trading Symbol | APGZX | |
Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB Large Cap Growth Fund (the “Fund”) for the period of August 1, 2023 to July 31, 2024. | |
Shareholder Report Annual or Semi-Annual | Annual Shareholder Report | |
Additional Information [Text Block] | You can find additional information about the Fund at https://www.abfunds.com/link/BWM/APGZX-A. You can also request this information by contacting us at (800) 227 4618. | |
Additional Information Phone Number | (800) 227 4618 | |
Additional Information Website | https://www.abfunds.com/link/BWM/APGZX-A | |
Expenses [Text Block] | What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment) Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Z $56 0.50% | |
Expenses Paid, Amount | $ 56 | |
Expense Ratio, Percent | 0.50% | |
Performance Past Does Not Indicate Future [Text] | | |
Average Annual Return [Table Text Block] | 1 Year 5 Years Since Inception 7/1/15 Class Z (without sales charges) 24.79 % 16.18 % 15.58 % Class Z (with sales charges) 24.79 % 16.18 % 15.58 % S&P 500 Index 22.15 % 15.00 % 13.50 % Russell 1000 Growth Index 26.94 % 18.41 % 16.60 % | |
Performance Inception Date | | Jul. 01, 2015 |
No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption or sale of Fund shares. | |
AssetsNet | $ 27,359,472,511 | $ 27,359,472,511 |
Holdings Count | Holding | 54 | 54 |
Advisory Fees Paid, Amount | $ 114,043,490 | |
InvestmentCompanyPortfolioTurnover | 30% | |
Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $27,359,472,511 # of Portfolio Holdings 54 Portfolio Turnover Rate 30% Total Advisory Fees Paid $114,043,490 | |
Holdings [Text Block] | Sector Allocation Value Value Information Technology 34.5% Health Care 17.7% Communication Services 13.0% Consumer Discretionary 12.8% Industrials 6.9% Consumer Staples 6.5% Financials 4.2% Materials 1.5% Investment Companies 1.4% Short-Term Investments 1.4% Other assets less liabilities 0.1% | |
Largest Holdings [Text Block] | 10 Top Holdings Company U.S. $ Value % of Net Assets NVIDIA Corp. $2,576,467,957 9.4 % Microsoft Corp. $2,451,761,093 9.0 % Amazon.com, Inc. $1,693,625,761 6.2 % Alphabet, Inc. - Class C $1,511,446,955 5.5 % Meta Platforms, Inc. - Class A $1,287,480,653 4.7 % Visa, Inc. - Class A $1,155,555,841 4.2 % Vertex Pharmaceuticals, Inc. $878,022,734 3.2 % Costco Wholesale Corp. $854,843,010 3.1 % Netflix, Inc. $770,668,133 2.8 % Monster Beverage Corp. $751,934,959 2.8 % Total $13,931,807,096 50.9 % | |
Material Fund Change [Text Block] | | |