| Shareholder Report | 12 Months Ended |
| Aug. 31, 2024 USD ($) Holding |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | GROWTH FUND OF AMERICA |
| Entity Central Index Key | 0000044201 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Aug. 31, 2024 |
| The Growth Fund of America® - Class A [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class A |
| Trading Symbol | AGTHX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-A |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-A |
| Expenses [Text Block] | What were the fund costs for the last year? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A $ 0.61 % |
| Expenses Paid, Amount | $ 70 |
| Expense Ratio, Percent | 0.61% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class A shares gained 30.05% for the year ended August 31, 2024. That result compares with a 27.14% gain for the S&P 500 Index. For information on returns for additional periods, including the fund lifetime, please refer to capitalgroup.com/mutual-fund-returns-A What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by the U.S. Federal Reserve, thus giving investors hope that recession could be avoided. Overseas markets remained mixed during the period, though equity markets in the U.S. and elsewhere continued to see strong growth, albeit with bouts of volatility. Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year 5 years 10 years The Growth Fund of America — Class A (with sales charge) * 22.59 % 14.29 % 12.24 % The Growth Fund of America — Class A (without sales charge) * 30.05 % 15.65 % 12.91 % S&P 500 Index † 27.14 % 15.92 % 12.98 % * † |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The Growth Fund of America® - Class R-6 | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class R-6 |
| Trading Symbol | RGAGX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R6 (800) 421-4225. |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-R6 |
| Expenses [Text Block] | What were the fund costs for the last year? hypothetical Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-6 $ 0.29 % |
| Expenses Paid, Amount | $ 33 |
| Expense Ratio, Percent | 0.29% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-6 shares gained 30.48 capitalgroup.com/mutual-fund-returns-R6 What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by the U.S. Federal Reserve, thus giving investors hope that recession could be avoided. Overseas markets remained mixed during the period, though equity markets in the U.S. and elsewhere continued to see strong growth, albeit with bouts of volatility. Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year 5 years 10 years The Growth Fund of America — Class R-6 * 30.48 % 16.03 % 13.27 % S&P 500 Index † 27.14 % 15.92 % 12.98 % * † expenses |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The Growth Fund of America® - Class R-5E | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class R-5E |
| Trading Symbol | RGAHX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R5E |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-R5E |
| Expenses [Text Block] | What were the fund costs for the last year? hypothetical 0 investme Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-5E $ 0.44 % |
| Expenses Paid, Amount | $ 51 |
| Expense Ratio, Percent | 0.44% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-5E shares gained 30.27% for the year ended August 31, 2024. That result compares with a 27.14% gain for the S&P 500 Index. For information on returns for additional periods, including the fund lifetime, please refer to capitalgroup.com/mutual-fund-returns-R5E What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by the U.S. Federal Reserve, thus giving investors hope that recession could be avoided. Overseas markets remained mixed during the period, though equity markets in the U.S. and elsewhere continued to see strong growth, albeit with bouts of volatility. Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year 5 years Since inception 1 The Growth Fund of America — Class R-5E 2 30.27 % 15.86 % 14.03 % S&P 500 Index 3 27.14 % 15.92 % 14.03 % 1 2 3 |
| Performance Inception Date | Nov. 20, 2015 |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The Growth Fund of America® - Class R-5 | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class R-5 |
| Trading Symbol | RGAFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R5 |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-R5 |
| Expenses [Text Block] | What were the fund costs for the last year? hypothetical Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-5 $ 0.34 % |
| Expenses Paid, Amount | $ 39 |
| Expense Ratio, Percent | 0.34% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-5 shares gained 30.41% for the year ended August 31, 2024. That result compares with capitalgroup.com/mutual-fund-returns-R5 What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by the U.S. Federal Reserve, thus giving investors hope that recession could be avoided. Overseas markets remained mixed during the period, though equity markets in the U.S. and elsewhere continued to see strong growth, albeit with bouts of volatility. Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year 5 years 10 years The Growth Fund of America — Class R-5 * 30.41 % 15.97 % 13.21 % S&P 500 Index † 27.14 % 15.92 % 12.98 % * † |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The Growth Fund of America® - Class C [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class C |
| Trading Symbol | GFACX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-C |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-C |
| Expenses [Text Block] | |
| Expenses Paid, Amount | $ 156 |
| Expense Ratio, Percent | 1.36% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class C shares gained 29.09% for the year ended August 31, 2024. That result compares with a 27.14% gain for the S&P 500 Index. For information on returns for additional periods, including the fund lifetime, please refer to capitalgroup.com/mutual-fund-returns-C Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year 5 years 10 years The Growth Fund of America — Class C (with sales charge) * 28.09 % 14.79 % 12.21 % The Growth Fund of America — Class C (without sales charge) * 29.09 % 14.79 % 12.21 % S&P 500 Index † 27.14 % 15.92 % 12.98 % * † |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The Growth Fund of America® - Class T [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class T |
| Trading Symbol | TFGAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature |
| Expenses [Text Block] | |
| Expenses Paid, Amount | $ 40 |
| Expense Ratio, Percent | 0.35% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class T shares gained 30.39% for the year ended August 31, 2024. That result compares with a 27.14% gain for the S&P 500 Index. What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by the U.S. Federal Reserve, thus giving investors hope that recession could be avoided. Overseas markets remained mixed during the period, though equity markets in the U.S. and elsewhere continued to see strong growth, albeit with bouts of volatility. Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year 5 years Since inception 1 The Growth Fund of America — Class T (with sales charge) 2 27.12 % 15.35 % 14.31 % The Growth Fund of America — Class T (without sales charge) 2 30.39 % 15.94 % 14.70 % S&P 500 Index 3 27.14 % 15.92 % 14.52 % 1 2 3 |
| Performance Inception Date | Apr. 07, 2017 |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The Growth Fund of America® - Class F-1 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class F-1 |
| Trading Symbol | GFAFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-F1 |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-F1 |
| Expenses [Text Block] | What were the fund costs for the last year? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class F-1 $ 0.66 % |
| Expenses Paid, Amount | $ 76 |
| Expense Ratio, Percent | 0.66% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class F-1 shares gained 29.98% for the year ended August 31, 2024. That result compares with a 27.14% gain for the S&P 500 Index. For information on returns for additional periods, including the fund lifetime, please refer to capitalgroup.com/mutual-fund-returns-F1 What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year 5 years 10 years The Growth Fund of America — Class F-1 * 29.98 % 15.60 % 12.85 % S&P 500 Index † 27.14 % 15.92 % 12.98 % * † |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The Growth Fund of America® - Class F-2 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class F-2 |
| Trading Symbol | GFFFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-F2 |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-F2 |
| Expenses [Text Block] | What were the fund costs for the last year? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class F-2 $ 0.40 % |
| Expenses Paid, Amount | $ 46 |
| Expense Ratio, Percent | 0.40% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class F-2 shares gained 30.32% for the year ended August 31, 2024. That result compares with a 27.14% gain for the S&P 500 Index. For information on returns for additional periods, including the fund lifetime, please refer to capitalgroup.com/mutual-fund-returns-F2 What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by the U.S. Federal Reserve, thus giving investors hope that recession could be avoided. Overseas markets remained mixed during the period, though equity markets in the U.S. and elsewhere continued to see strong growth, albeit with bouts of volatility. Holdings in most equity sectors produced positive retu rns for t In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year 5 years 10 years The Growth Fund of America — Class F-2 * 30.32 % 15.90 % 13.15 % S&P 500 Index † 27.14 % 15.92 % 12.98 % * † |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The Growth Fund of America® - Class F-3 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class F-3 |
| Trading Symbol | GAFFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-F3 |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-F3 |
| Expenses [Text Block] | What were the fund costs for the last year? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class F-3 $ 0.29 % |
| Expenses Paid, Amount | $ 33 |
| Expense Ratio, Percent | 0.29% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class F-3 shares gained 30.46% for the year ended August 31, 2024. That result compares with a 27.14% gain for the S&P 500 Index. For information on returns for additional periods, including the fund lifetime, please refer to capitalgroup.com/mutual-fund-returns-F3 What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by the U.S. Federal Reserve, thus giving investors hope that recession could be avoided. Overseas markets remained mixed during the period, though equity markets in the U.S. and elsewhere continued to see strong growth, albeit with bouts of volatility. Holdings in most equity sectors produced pos itive In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year 5 years Since inception 1 The Growth Fund of America — Class F-3 2 30.46 % 16.02 % 14.75 % S&P 500 Index 3 27.14 % 15.92 % 14.59 % 1 2 3 |
| Performance Inception Date | Jan. 27, 2017 |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The Growth Fund of America® - Class 529-A [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class 529-A |
| Trading Symbol | CGFAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-529A |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-529A |
| Expenses [Text Block] | What were the fund costs for the last year? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 529-A $ 0.65 % |
| Expenses Paid, Amount | $ 75 |
| Expense Ratio, Percent | 0.65% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-A shares gained 30.00% for the year ended August 31, 2024. That result compares with a 27.14% gain for the S&P 500 Index. For information on returns for additional periods, including the fund lifetime, please refer to capitalgroup.com/mutual-fund-returns-529A What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by the U.S. Federal Reserve, thus giving investors hope that recession could be avoided. Overseas markets remained mixed during the period, though equity markets in the U.S. and elsewhere continued to see strong growth, albeit with bouts of volatility. Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year 5 years 10 years The Growth Fund of America — Class 529-A (with sales charge) * 25.44 % 14.79 % 12.44 % The Growth Fund of America — Class 529-A (without sales charge) * 30.00 % 15.61 % 12.84 % S&P 500 Index † 27.14 % 15.92 % 12.98 % * † |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The Growth Fund of America® - Class 529-C [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class 529-C |
| Trading Symbol | CGFCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-529C |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-529C |
| Expenses [Text Block] | What were the fund costs for the last year? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 529-C $ 1.40 % |
| Expenses Paid, Amount | $ 160 |
| Expense Ratio, Percent | 1.40% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-C shares gained 29.03% for the year ended August 31, 2024. That result compares with a 27.14% gain for the S&P 500 Index. For information on returns for additional periods, including the fund lifetime, please refer to capitalgroup.com/mutual-fund-returns-529C What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by the U.S. Federal Reserve, thus giving investors hope that recession could be avoided. Overseas markets remained mixed during the period, though equity markets in the U.S. and elsewhere continued to see strong growth, albeit with bouts of volatility. Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year 5 years 10 years The Growth Fund of America — Class 529-C (with sales charge) * 28.03 % 14.74 % 12.41 % The Growth Fund of America — Class 529-C (without sales charge) * 29.03 % 14.74 % 12.41 % S&P 500 Index † 27.14 % 15.92 % 12.98 % * † |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The Growth Fund of America® - Class 529-E [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class 529-E |
| Trading Symbol | CGFEX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-529E |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-529E |
| Expenses [Text Block] | What were the fund costs for the last year? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Clas s $ 0.88 % |
| Expenses Paid, Amount | $ 101 |
| Expense Ratio, Percent | 0.88% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-E shares gained 29.72% for the year ended August 31, 2024. That result compares with a 27.14% gain for the S&P 500 Index. For information on returns for additional periods, including the fund lifetime, please refer to capitalgroup.com/mutual-fund-returns-529E What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by the U.S. Federal Reserve, thus giving investors hope that recession could be avoided. Overseas markets remained mixed during the period, though equity markets in the U.S. and elsewhere continued to see strong growth, albeit with bouts of volatility. Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year 5 years 10 years The Growth Fund of America — Class 529-E * 29.72 % 15.34 % 12.58 % S&P 500 Index † 27.14 % 15.92 % 12.98 % * † |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The Growth Fund of America® - Class 529-T [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class 529-T |
| Trading Symbol | TAFFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature |
| Expenses [Text Block] | What were the fund costs for the last year? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 529-T $ 0.42 % |
| Expenses Paid, Amount | $ 48 |
| Expense Ratio, Percent | 0.42% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-T shares gained 30.30% for the year ended August 31, 2024. That result compares with a 27.14% gain for the S&P 500 Index. What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by the U.S. Federal Reserve, thus giving investors hope that recession could be avoided. Overseas markets remained mixed during the period, though equity markets in the U.S. and elsewhere continued to see strong growth, albeit with bouts of volatility. Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year 5 years Since inception 1 The Growth Fund of America — Class 529-T (with sales charge) 2 27.05 % 15.29 % 14.25 % The Growth Fund of America — Class 529-T (without sales charge) 2 30.30 % 15.88 % 14.64 % S&P 500 Index 3 27.14 % 15.92 % 14.52 % 1 2 3 |
| Performance Inception Date | Apr. 07, 2017 |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The Growth Fund of America® - Class 529-F-1 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class 529-F-1 |
| Trading Symbol | CGFFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-529F1 |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-529F1 |
| Expenses [Text Block] | What were the fund costs for the last year? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 529-F-1 $ 0.43 % |
| Expenses Paid, Amount | $ 50 |
| Expense Ratio, Percent | 0.43% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-F-1 shares gained 30.28% for the year ended August 31, 2024. That result compares with a 27.14% gain for the S&P 500 Index. For information on returns for additional periods, including the fund lifetime, please refer to capitalgroup.com/mutual-fund-returns-529F1 What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by the U.S. Federal Reserve, thus giving investors hope that recession could be avoided. Overseas markets remained mixed during the period, though equity markets in the U.S. and elsewhere continued to see strong growth, albeit with bouts of volatility. Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year 5 years 10 years The Growth Fund of America — Class 529-F-1 * 30.28 % 15.86 % 13.08 % S&P 500 Index † 27.14 % 15.92 % 12.98 % * † |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The Growth Fund of America® - Class 529-F-2 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class 529-F-2 |
| Trading Symbol | FAFGX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-529F2 |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-529F2 |
| Expenses [Text Block] | What were the fund costs for the last year? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 529-F-2 $ 0.40 % |
| Expenses Paid, Amount | $ 46 |
| Expense Ratio, Percent | 0.40% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-F-2 shares gained 30.33% for the year ended August 31, 2024. That result compares with a 27.14% gain for the S&P 500 Index. For information on returns for additional periods, including the fund lifetime, please refer to capitalgroup.com/mutual-fund-returns-529F2 What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by the U.S. Federal Reserve, thus giving investors hope that recession could be avoided. Overseas markets remained mixed during the period, though equity markets in the U.S. and elsewhere continued to see strong growth, albeit with bouts of volatility. Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year Since inception 1 The Growth Fund of America — Class 529-F-2 2 30.33 % 13.48 % S&P 500 Index 3 27.14 % 17.11 % 1 2 3 |
| Performance Inception Date | Oct. 30, 2020 |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The Growth Fund of America® - Class 529-F-3 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class 529-F-3 |
| Trading Symbol | FFAFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-529F3 |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-529F3 |
| Expenses [Text Block] | What were the fund costs for the last year? en Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 529-F-3 $ 0.35 % |
| Expenses Paid, Amount | $ 40 |
| Expense Ratio, Percent | 0.35% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-F-3 shares gained 30.39% for the year capitalgroup.com/mutual-fund-returns-529F3 What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by the U.S. Federal Reserve, thus giving investors hope that recession could be avoided. Overseas markets remained mixed during the period, though equity markets in the U.S. and elsewhere continued to see strong growth, albeit with bouts of volatility. Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year Since inception 1 The Growth Fund of America — Class 529-F-3 2 30.39 % 13.53 % S&P 500 Index 3 27.14 % 17.11 % 1 2 3 |
| Performance Inception Date | Oct. 30, 2020 |
| No Deduction of Taxes [Text Block] | The li n |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector assets |
| The Growth Fund of America® - Class R-1 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class R-1 |
| Trading Symbol | RGAAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R1 |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-R1 |
| Expenses [Text Block] | What were the fund costs for the last year? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-1 $ 1.38 % |
| Expenses Paid, Amount | $ 158 |
| Expense Ratio, Percent | 1.38% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-1 shares gained 29.06% for the year ended August 31, 2024. That result compares with a 27.14% gain for the S&P 500 Index. For information on returns for additional periods, including the fund lifetime, please refer to capitalgroup.com/mutual-fund-returns-R1 What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total retur ns 1 year 5 years 10 years The Growth Fund of Am * 29.06 % 14.77 % 12.04 % S&P 500 Index † 27.14 % 15.92 % 12.98 % * † |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover ra te 25 % |
| Holdings [Text Block] | Portfolio holdings by sector net et |
| The Growth Fund of America® - Class R-2 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class R-2 |
| Trading Symbol | RGABX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R2 |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-R2 |
| Expenses [Text Block] | What were the fund costs for the last year? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-2 $ 1.38 % |
| Expenses Paid, Amount | $ 158 |
| Expense Ratio, Percent | 1.38% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-2 shares gained 29.05% for the year ended August 31, 2024. That result compares capitalgroup.com/mutual-fund-returns-R2 What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by the U.S. Federal Reserve, thus giving investors hope that recession could be avoided. Overseas markets remained mixed during the period, though equity markets in the U.S. and elsewhere continued to see strong growth, albeit with bouts of volatility. Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total retu r 1 year 5 years 10 years The Growth Fund of America — Class R-2 * 29.05 % 14.76 % 12.04 % S&P 500 Index † 27.14 % 15.92 % 12.98 % * † therefore |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector s) |
| The Growth Fund of America® - Class R-2E | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class R-2E |
| Trading Symbol | RGEBX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R2E |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-R2E |
| Expenses [Text Block] | What were the fund costs for the last year? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-2E $ 1.09 % |
| Expenses Paid, Amount | $ 125 |
| Expense Ratio, Percent | 1.09% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-2E shares gained 29.43% for the year ended August 31, 2024. That result compares with a 27.14% gain for the S&P 500 Index. For information on returns for additional periods, including the fund lifetime, please refer to capitalgroup.com/mutual-fund-returns-R2E What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by the U.S. Federal Reserve, thus giving investors hope that recession could be avoided. Overseas markets remained mixed during the period, though equity markets in the U.S. and elsewhere continued to see strong growth, albeit with bouts of volatility. Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year 5 years 10 years The Growth Fund of America — Class R-2E * 29.43 % 15.10 % 12.40 % S&P 500 Index † 27.14 % 15.92 % 12.98 % * † |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The Growth Fund of America® - Class R-3 | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class R-3 |
| Trading Symbol | RGACX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R3 |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-R3 |
| Expenses [Text Block] | What were the fund costs for the last year? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-3 $ 0.94 % |
| Expenses Paid, Amount | $ 108 |
| Expense Ratio, Percent | 0.94% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-3 shares gained 29.62% for the year ended August 31, 2024. That result compares with a 27.14% gain for the S&P 500 Index. For information on returns for additional periods, including the fund lifetime, please refer to capitalgroup.com/mutual-fund-returns-R3 What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by the U.S. Federal Reserve, thus giving investors hope that recession could be avoided. Overseas markets remained mixed during the period, though equity markets in the U.S. and elsewhere continued to see strong growth, albeit with bouts of volatility. Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year 5 years 10 years The Growth Fund of America — Class R-3 * 29.62 % 15.27 % 12.54 % S&P 500 Index † 27.14 % 15.92 % 12.98 % * † |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The Growth Fund of America® - Class R-4 | |
| Shareholder Report [Line Items] | |
| Fund Name | The Growth Fund of America® |
| Class Name | Class R-4 |
| Trading Symbol | RGAEX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The Growth Fund of America (the "fund") |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R4 |
| Additional Information Phone Number | (800) 421-4225 |
| Additional Information Website | capitalgroup.com/mutual-fund-literature-R4 |
| Expenses [Text Block] | What were the fund costs for the last year? investment Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-4 $ 0.64 % |
| Expenses Paid, Amount | $ 74 |
| Expense Ratio, Percent | 0.64% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-4 shares gained 30.00% for the year ended August 31, 2024. That result compares with a 27.14% gain for the S&P 500 Index. For information on returns for additional periods, including the fund lifetime, please refer to capitalgroup.com/mutual-fund-returns-R4 What factors influenced results The U.S. economy continued to see growth during the fund’s fiscal year, despite high interest rates. However, lower job creation numbers over the summer were seen as a sign of a possible interest rate cut by the U.S. Federal Reserve, thus giving investors hope that recession could be avoided. Overseas markets remained mixed during the period, though equity markets in the U.S. and elsewhere continued to see strong growth, albeit with bouts of volatility. Holdings in most equity sectors produced positive returns for the fund, with shares of communication services, information technology, financials and utility companies particularly additive to results. While the bulk of the portfolio remains invested in U.S. equities, holdings of companies based in Taiwan, the Netherlands and Canada added to returns. In terms of detractors, holdings in the energy sector saw negative returns during the period, while holdings in real estate and consumer staples companies saw positive returns that were below the portfolio’s overall results. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a predictor of its future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average annual total returns 1 year 5 years 10 years The Growth Fund of America — Class R-4 * 30.00 % 15.62 % 12.87 % S&P 500 Index † 27.14 % 15.92 % 12.98 % * † Investors |
| No Deduction of Taxes [Text Block] | The line chart and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 284,835,000,000 |
| Holdings Count | Holding | 324 |
| Advisory Fees Paid, Amount | $ 662,000,000 |
| Investment Company, Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 324 Total advisory fees paid (in millions) $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | Portfolio holdings by sector assets |
