Shareholder Report |
12 Months Ended | ||||||||||||||||
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Aug. 31, 2026
USD ($)
Holding
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| 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, 2026 | ||||||||||||||||
| The Growth Fund of America® - Class A | |||||||||||||||||
| 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") for the period from September 1, 2025 to August 31, 2026. | ||||||||||||||||
| 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. You can also request this information by contacting us at (800) 421-4225. | ||||||||||||||||
| 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? (based on a hypothetical $10,000 investment)
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| Expenses Paid, Amount | $ 63 | ||||||||||||||||
| Expense Ratio, Percent | 0.59% | ||||||||||||||||
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class A shares gained 14.80% for the year ended August 31, 2026. That result compares with a 20.38% 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 U.S. equities posted strong gains during the fund’s fiscal year, driving the S&P 500 Index to record highs. Markets were supported by higher oil prices amid tensions in the Middle East and continued investment in artificial intelligence infrastructure. The U.S. economy remained resilient, underpinned by steady consumer spending, while signs of a moderating labor market prompted the Federal Reserve to implement three 25-basis-point rate cuts during the period. Within the fund, In contrast, the financials and consumer discretionary sectors posted negative returns and weighed on overall fund results.
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| 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] |
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| Average Annual Return [Table Text Block] | Average annual total returns
* Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.† Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): S&P Dow Jones Indices LLC. |
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| 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 | $ 353,072,000,000 | ||||||||||||||||
| Holdings Count | Holding | 316 | ||||||||||||||||
| Advisory Fees Paid, Amount | $ 848,000,000 | ||||||||||||||||
| Investment Company, Portfolio Turnover | 39.00% | ||||||||||||||||
| Additional Fund Statistics [Text Block] | Key fund statistics
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| Holdings [Text Block] | Portfolio holdings by sector (percent of net assets)
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| The Growth Fund of America - Class C | |||||||||||||||||
| 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") for the period from September 1, 2025 to August 31, 2026. | ||||||||||||||||
| 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. You can also request this information by contacting us at (800) 421-4225. | ||||||||||||||||
| Additional Information Phone Number | (800) 421-4225 | ||||||||||||||||
| Additional Information Website | capitalgroup.com/mutual-fund-literature-C | ||||||||||||||||
| Expenses [Text Block] | What were the fund costs for the last year? (based on a hypothetical $10,000 investment)
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| Expenses Paid, Amount | $ 143 | ||||||||||||||||
| Expense Ratio, Percent | 1.34% | ||||||||||||||||
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class C shares gained 13.95% for the year ended August 31, 2026. That result compares with a 20.38% 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. What factors influenced results U.S. equities posted strong gains during the fund’s fiscal year, driving the S&P 500 Index to record highs. Markets were supported by higher oil prices amid tensions in the Middle East and continued investment in artificial intelligence infrastructure. The U.S. economy remained resilient, underpinned by steady consumer spending, while signs of a moderating labor market prompted the Federal Reserve to implement three 25-basis-point rate cuts during the period. Within the fund, In contrast, the financials and consumer discretionary sectors posted negative returns and weighed on overall fund results.
|
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| 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] |
|
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| Average Annual Return [Table Text Block] | Average annual total returns
* Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.† Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): S&P Dow Jones Indices LLC. |
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| 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 | $ 353,072,000,000 | ||||||||||||||||
| Holdings Count | Holding | 316 | ||||||||||||||||
| Advisory Fees Paid, Amount | $ 848,000,000 | ||||||||||||||||
| Investment Company, Portfolio Turnover | 39.00% | ||||||||||||||||
| Additional Fund Statistics [Text Block] | Key fund statistics
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| Holdings [Text Block] | Portfolio holdings by sector
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| The Growth Fund of America® - Class F-1 | |||||||||||||||||
| 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") for the period from September 1, 2025 to August 31, 2026. | ||||||||||||||||
| 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. You can also request this information by contacting us at (800) 421-4225. | ||||||||||||||||
| 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? (based on a hypothetical $10,000 investment)
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| Expenses Paid, Amount | $ 70 | ||||||||||||||||
| Expense Ratio, Percent | 0.65% | ||||||||||||||||
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class F-1 shares gained 14.74% for the year ended August 31, 2026. That result compares with a 20.38% 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 U.S. equities posted strong gains during the fund’s fiscal year, driving the S&P 500 Index to record highs. Markets were supported by higher oil prices amid tensions in the Middle East and continued investment in artificial intelligence infrastructure. The U.S. economy remained resilient, underpinned by steady consumer spending, while signs of a moderating labor market prompted the Federal Reserve to implement three 25-basis-point rate cuts during the period. Within the fund, In contrast, the financials and consumer discretionary sectors posted negative returns and weighed on overall fund results.
|
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| 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] |
|
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| Average Annual Return [Table Text Block] | Average annual total returns
* Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.† Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): S&P Dow Jones Indices LLC. |
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| 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 | $ 353,072,000,000 | ||||||||||||||||
| Holdings Count | Holding | 316 | ||||||||||||||||
| Advisory Fees Paid, Amount | $ 848,000,000 | ||||||||||||||||
| Investment Company, Portfolio Turnover | 39.00% | ||||||||||||||||
| Additional Fund Statistics [Text Block] | Key fund statistics
|
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| Holdings [Text Block] | Portfolio holdings by sector (percent of net assets)
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| The Growth Fund of America® - Class F-2 | |||||||||||||||||
| 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") for the period from September 1, 2025 to August 31, 2026. | ||||||||||||||||
| 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. You can also request this information by contacting us at (800) 421-4225. | ||||||||||||||||
| 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? (based on a hypothetical $10,000 investment)
|
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| Expenses Paid, Amount | $ 43 | ||||||||||||||||
| Expense Ratio, Percent | 0.40% | ||||||||||||||||
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class F-2 shares gained 15.02% for the year ended August 31, 2026. That result compares with a 20.38% 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 U.S. equities posted strong gains during the fund’s fiscal year, driving the S&P 500 Index to record highs. Markets were supported by higher oil prices amid tensions in the Middle East and continued investment in artificial intelligence infrastructure. The U.S. economy remained resilient, underpinned by steady consumer spending, while signs of a moderating labor market prompted the Federal Reserve to implement three 25-basis-point rate cuts during the period. Within the fund, In contrast, the financials and consumer discretionary sectors posted negative returns and weighed on overall fund results.
|
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| 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
* Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.† Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): S&P Dow Jones Indices LLC. |
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| 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 | $ 353,072,000,000 | ||||||||||||||||
| Holdings Count | Holding | 316 | ||||||||||||||||
| Advisory Fees Paid, Amount | $ 848,000,000 | ||||||||||||||||
| Investment Company, Portfolio Turnover | 39.00% | ||||||||||||||||
| Additional Fund Statistics [Text Block] | Key fund statistics
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| Holdings [Text Block] | Portfolio holdings by sector (percent of net assets)
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| The Growth Fund of America® - Class F-3 | |||||||||||||||||
| 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") for the period from September 1, 2025 to August 31, 2026. | ||||||||||||||||
| 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. You can also request this information by contacting us at (800) 421-4225. | ||||||||||||||||
| 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? (based on a hypothetical $10,000 investment)
|
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| Expenses Paid, Amount | $ 31 | ||||||||||||||||
| Expense Ratio, Percent | 0.29% | ||||||||||||||||
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class F-3 shares gained 15.15% for the year ended August 31, 2026. That result compares with a 20.38% 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 U.S. equities posted strong gains during the fund’s fiscal year, driving the S&P 500 Index to record highs. Markets were supported by higher oil prices amid tensions in the Middle East and continued investment in artificial intelligence infrastructure. The U.S. economy remained resilient, underpinned by steady consumer spending, while signs of a moderating labor market prompted the Federal Reserve to implement three 25-basis-point rate cuts during the period. Within the fund, In contrast, the financials and consumer discretionary sectors posted negative returns and weighed on overall fund results.
|
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| 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] |
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| Average Annual Return [Table Text Block] | Average annual total returns
1 Class F-3 shares were first offered on January 27, 2017.2 Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.3 Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): S&P Dow Jones Indices LLC. |
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| 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 | $ 353,072,000,000 | ||||||||||||||||
| Holdings Count | Holding | 316 | ||||||||||||||||
| Advisory Fees Paid, Amount | $ 848,000,000 | ||||||||||||||||
| Investment Company, Portfolio Turnover | 39.00% | ||||||||||||||||
| Additional Fund Statistics [Text Block] | Key fund statistics
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| Holdings [Text Block] | Portfolio holdings by sector (percent of net assets)
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| The Growth Fund of America® - Class 529-A | |||||||||||||||||
| 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") for the period from September 1, 2025 to August 31, 2026. | ||||||||||||||||
| 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. You can also request this information by contacting us at (800) 421-4225. | ||||||||||||||||
| 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? (based on a hypothetical $10,000 investment)
|
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| Expenses Paid, Amount | $ 67 | ||||||||||||||||
| Expense Ratio, Percent | 0.62% | ||||||||||||||||
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-A shares gained 14.77% for the year ended August 31, 2026. That result compares with a 20.38% 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 U.S. equities posted strong gains during the fund’s fiscal year, driving the S&P 500 Index to record highs. Markets were supported by higher oil prices amid tensions in the Middle East and continued investment in artificial intelligence infrastructure. The U.S. economy remained resilient, underpinned by steady consumer spending, while signs of a moderating labor market prompted the Federal Reserve to implement three 25-basis-point rate cuts during the period. Within the fund, In contrast, the financials and consumer discretionary sectors posted negative returns and weighed on overall fund results.
|
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| 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
* Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.† Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): S&P Dow Jones Indices LLC. |
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| 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 | $ 353,072,000,000 | ||||||||||||||||
| Holdings Count | Holding | 316 | ||||||||||||||||
| Advisory Fees Paid, Amount | $ 848,000,000 | ||||||||||||||||
| Investment Company, Portfolio Turnover | 39.00% | ||||||||||||||||
| Additional Fund Statistics [Text Block] | Key fund statistics
|
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| Holdings [Text Block] | Portfolio holdings by sector (percent of net assets)
|
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| The Growth Fund of America® - Class 529-C | |||||||||||||||||
| 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") for the period from September 1, 2025 to August 31, 2026. | ||||||||||||||||
| 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. You can also request this information by contacting us at (800) 421-4225. | ||||||||||||||||
| 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? (based on a hypothetical $10,000 investment)
|
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| Expenses Paid, Amount | $ 149 | ||||||||||||||||
| Expense Ratio, Percent | 1.39% | ||||||||||||||||
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-C shares gained 13.88% for the year ended August 31, 2026. That result compares with a 20.38% 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 U.S. equities posted strong gains during the fund’s fiscal year, driving the S&P 500 Index to record highs. Markets were supported by higher oil prices amid tensions in the Middle East and continued investment in artificial intelligence infrastructure. The U.S. economy remained resilient, underpinned by steady consumer spending, while signs of a moderating labor market prompted the Federal Reserve to implement three 25-basis-point rate cuts during the period. Within the fund, In contrast, the financials and consumer discretionary sectors posted negative returns and weighed on overall fund results.
|
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| 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
* Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.† Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): S&P Dow Jones Indices LLC. |
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| 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 | $ 353,072,000,000 | ||||||||||||||||
| Holdings Count | Holding | 316 | ||||||||||||||||
| Advisory Fees Paid, Amount | $ 848,000,000 | ||||||||||||||||
| Investment Company, Portfolio Turnover | 39.00% | ||||||||||||||||
| Additional Fund Statistics [Text Block] | Key fund statistics
|
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| Holdings [Text Block] | Portfolio holdings by sector (percent of net assets)
|
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| The Growth Fund of America® - Class 529-E | |||||||||||||||||
| 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") for the period from September 1, 2025 to August 31, 2026. | ||||||||||||||||
| 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. You can also request this information by contacting us at (800) 421-4225. | ||||||||||||||||
| 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? (based on a hypothetical $10,000 investment)
|
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| Expenses Paid, Amount | $ 93 | ||||||||||||||||
| Expense Ratio, Percent | 0.87% | ||||||||||||||||
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-E shares gained 14.46% for the year ended August 31, 2026. That result compares with a 20.38% 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 U.S. equities posted strong gains during the fund’s fiscal year, driving the S&P 500 Index to record highs. Markets were supported by higher oil prices amid tensions in the Middle East and continued investment in artificial intelligence infrastructure. The U.S. economy remained resilient, underpinned by steady consumer spending, while signs of a moderating labor market prompted the Federal Reserve to implement three 25-basis-point rate cuts during the period. Within the fund, In contrast, the financials and consumer discretionary sectors posted negative returns and weighed on overall fund results.
|
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| 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
* Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.† Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): S&P Dow Jones Indices LLC. |
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| 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 | $ 353,072,000,000 | ||||||||||||||||
| Holdings Count | Holding | 316 | ||||||||||||||||
| Advisory Fees Paid, Amount | $ 848,000,000 | ||||||||||||||||
| Investment Company, Portfolio Turnover | 39.00% | ||||||||||||||||
| Additional Fund Statistics [Text Block] | Key fund statistics
|
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| Holdings [Text Block] | Portfolio holdings by sector (percent of net assets)
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| The Growth Fund of America® - Class 529-F-2 | |||||||||||||||||
| 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") for the period from September 1, 2025 to August 31, 2026. | ||||||||||||||||
| 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. You can also request this information by contacting us at (800) 421-4225. | ||||||||||||||||
| 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? (based on a hypothetical $10,000 investment)
|
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| Expenses Paid, Amount | $ 41 | ||||||||||||||||
| Expense Ratio, Percent | 0.38% | ||||||||||||||||
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-F-2 shares gained 15.04% for the year ended August 31, 2026. That result compares with a 20.38% 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 U.S. equities posted strong gains during the fund’s fiscal year, driving the S&P 500 Index to record highs. Markets were supported by higher oil prices amid tensions in the Middle East and continued investment in artificial intelligence infrastructure. The U.S. economy remained resilient, underpinned by steady consumer spending, while signs of a moderating labor market prompted the Federal Reserve to implement three 25-basis-point rate cuts during the period. Within the fund, In contrast, the financials and consumer discretionary sectors posted negative returns and weighed on overall fund results.
|
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| 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 Class 529-F-2 shares were first offered on October 30, 2020.2 Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.3 Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): S&P Dow Jones Indices LLC. |
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| 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 | $ 353,072,000,000 | ||||||||||||||||
| Holdings Count | Holding | 316 | ||||||||||||||||
| Advisory Fees Paid, Amount | $ 848,000,000 | ||||||||||||||||
| Investment Company, Portfolio Turnover | 39.00% | ||||||||||||||||
| Additional Fund Statistics [Text Block] | Key fund statistics
|
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| Holdings [Text Block] | Portfolio holdings by sector (percent of net assets)
|
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| The Growth Fund of America® - Class 529-F-3 | |||||||||||||||||
| 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") for the period from September 1, 2025 to August 31, 2026. | ||||||||||||||||
| 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. You can also request this information by contacting us at (800) 421-4225. | ||||||||||||||||
| 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? (based on a hypothetical $10,000 investment)
|
||||||||||||||||
| Expenses Paid, Amount | $ 37 | ||||||||||||||||
| Expense Ratio, Percent | 0.34% | ||||||||||||||||
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-F-3 shares gained 15.08% for the year ended August 31, 2026. That result compares with a 20.38% 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-529F3. What factors influenced results U.S. equities posted strong gains during the fund’s fiscal year, driving the S&P 500 Index to record highs. Markets were supported by higher oil prices amid tensions in the Middle East and continued investment in artificial intelligence infrastructure. The U.S. economy remained resilient, underpinned by steady consumer spending, while signs of a moderating labor market prompted the Federal Reserve to implement three 25-basis-point rate cuts during the period. Within the fund, In contrast, the financials and consumer discretionary sectors posted negative returns and weighed on overall fund 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 Class 529-F-3 shares were first offered on October 30, 2020.2 Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.3 Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): S&P Dow Jones Indices LLC. |
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| 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 | $ 353,072,000,000 | ||||||||||||||||
| Holdings Count | Holding | 316 | ||||||||||||||||
| Advisory Fees Paid, Amount | $ 848,000,000 | ||||||||||||||||
| Investment Company, Portfolio Turnover | 39.00% | ||||||||||||||||
| Additional Fund Statistics [Text Block] | Key fund statistics
|
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| Holdings [Text Block] | Portfolio holdings by sector (percent of net assets)
|
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| The Growth Fund of America® - Class R-1 | |||||||||||||||||
| 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") for the period from September 1, 2025 to August 31, 2026. | ||||||||||||||||
| 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. You can also request this information by contacting us at (800) 421-4225. | ||||||||||||||||
| 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? (based on a hypothetical $10,000 investment)
|
||||||||||||||||
| Expenses Paid, Amount | $ 147 | ||||||||||||||||
| Expense Ratio, Percent | 1.37% | ||||||||||||||||
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-1 shares gained 13.91% for the year ended August 31, 2026. That result compares with a 20.38% 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 U.S. equities posted strong gains during the fund’s fiscal year, driving the S&P 500 Index to record highs. Markets were supported by higher oil prices amid tensions in the Middle East and continued investment in artificial intelligence infrastructure. The U.S. economy remained resilient, underpinned by steady consumer spending, while signs of a moderating labor market prompted the Federal Reserve to implement three 25-basis-point rate cuts during the period. Within the fund, In contrast, the financials and consumer discretionary sectors posted negative returns and weighed on overall fund 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
* Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.† Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): S&P Dow Jones Indices LLC. |
||||||||||||||||
| 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 | $ 353,072,000,000 | ||||||||||||||||
| Holdings Count | Holding | 316 | ||||||||||||||||
| Advisory Fees Paid, Amount | $ 848,000,000 | ||||||||||||||||
| Investment Company, Portfolio Turnover | 39.00% | ||||||||||||||||
| Additional Fund Statistics [Text Block] | Key fund statistics
|
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| Holdings [Text Block] | Portfolio holdings by sector (percent of net assets)
|
||||||||||||||||
| The Growth Fund of America® - Class R-2 | |||||||||||||||||
| 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") for the period from September 1, 2025 to August 31, 2026. | ||||||||||||||||
| 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. You can also request this information by contacting us at (800) 421-4225. | ||||||||||||||||
| 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? (based on a hypothetical $10,000 investment)
|
||||||||||||||||
| Expenses Paid, Amount | $ 148 | ||||||||||||||||
| Expense Ratio, Percent | 1.38% | ||||||||||||||||
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-2 shares gained 13.89% for the year ended August 31, 2026. That result compares with a 20.38% 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-R2. What factors influenced results U.S. equities posted strong gains during the fund’s fiscal year, driving the S&P 500 Index to record highs. Markets were supported by higher oil prices amid tensions in the Middle East and continued investment in artificial intelligence infrastructure. The U.S. economy remained resilient, underpinned by steady consumer spending, while signs of a moderating labor market prompted the Federal Reserve to implement three 25-basis-point rate cuts during the period. Within the fund, In contrast, the financials and consumer discretionary sectors posted negative returns and weighed on overall fund 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
* Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.† Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): S&P Dow Jones Indices LLC. |
||||||||||||||||
| 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 | $ 353,072,000,000 | ||||||||||||||||
| Holdings Count | Holding | 316 | ||||||||||||||||
| Advisory Fees Paid, Amount | $ 848,000,000 | ||||||||||||||||
| Investment Company, Portfolio Turnover | 39.00% | ||||||||||||||||
| Additional Fund Statistics [Text Block] | Key fund statistics
|
||||||||||||||||
| Holdings [Text Block] | Portfolio holdings by sector (percent of net assets)
|
||||||||||||||||
| 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") for the period from September 1, 2025 to August 31, 2026. | ||||||||||||||||
| 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. You can also request this information by contacting us at (800) 421-4225. | ||||||||||||||||
| 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? (based on a hypothetical $10,000 investment)
|
||||||||||||||||
| Expenses Paid, Amount | $ 116 | ||||||||||||||||
| Expense Ratio, Percent | 1.08% | ||||||||||||||||
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-2E shares gained 14.24% for the year ended August 31, 2026. That result compares with a 20.38% 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 U.S. equities posted strong gains during the fund’s fiscal year, driving the S&P 500 Index to record highs. Markets were supported by higher oil prices amid tensions in the Middle East and continued investment in artificial intelligence infrastructure. The U.S. economy remained resilient, underpinned by steady consumer spending, while signs of a moderating labor market prompted the Federal Reserve to implement three 25-basis-point rate cuts during the period. Within the fund, In contrast, the financials and consumer discretionary sectors posted negative returns and weighed on overall fund 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
* Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.† Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): S&P Dow Jones Indices LLC. |
||||||||||||||||
| 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 | $ 353,072,000,000 | ||||||||||||||||
| Holdings Count | Holding | 316 | ||||||||||||||||
| Advisory Fees Paid, Amount | $ 848,000,000 | ||||||||||||||||
| Investment Company, Portfolio Turnover | 39.00% | ||||||||||||||||
| Additional Fund Statistics [Text Block] | Key fund statistics
|
||||||||||||||||
| Holdings [Text Block] | Portfolio holdings by sector (percent of net assets)
|
||||||||||||||||
| 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") for the period from September 1, 2025 to August 31, 2026. | ||||||||||||||||
| 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. You can also request this information by contacting us at (800) 421-4225. | ||||||||||||||||
| 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? (based on a hypothetical $10,000 investment)
|
||||||||||||||||
| Expenses Paid, Amount | $ 100 | ||||||||||||||||
| Expense Ratio, Percent | 0.93% | ||||||||||||||||
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-3 shares gained 14.41% for the year ended August 31, 2026. That result compares with a 20.38% 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 U.S. equities posted strong gains during the fund’s fiscal year, driving the S&P 500 Index to record highs. Markets were supported by higher oil prices amid tensions in the Middle East and continued investment in artificial intelligence infrastructure. The U.S. economy remained resilient, underpinned by steady consumer spending, while signs of a moderating labor market prompted the Federal Reserve to implement three 25-basis-point rate cuts during the period. Within the fund, In contrast, the financials and consumer discretionary sectors posted negative returns and weighed on overall fund 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
* Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.† Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): S&P Dow Jones Indices LLC. |
||||||||||||||||
| 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 | $ 353,072,000,000 | ||||||||||||||||
| Holdings Count | Holding | 316 | ||||||||||||||||
| Advisory Fees Paid, Amount | $ 848,000,000 | ||||||||||||||||
| Investment Company, Portfolio Turnover | 39.00% | ||||||||||||||||
| Additional Fund Statistics [Text Block] | Key fund statistics
|
||||||||||||||||
| Holdings [Text Block] | Portfolio holdings by sector (percent of net assets)
|
||||||||||||||||
| 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") for the period from September 1, 2025 to August 31, 2026. | ||||||||||||||||
| 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. You can also request this information by contacting us at (800) 421-4225. | ||||||||||||||||
| 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? (based on a hypothetical $10,000 investment)
|
||||||||||||||||
| Expenses Paid, Amount | $ 68 | ||||||||||||||||
| Expense Ratio, Percent | 0.63% | ||||||||||||||||
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-4 shares gained 14.75% for the year ended August 31, 2026. That result compares with a 20.38% 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 U.S. equities posted strong gains during the fund’s fiscal year, driving the S&P 500 Index to record highs. Markets were supported by higher oil prices amid tensions in the Middle East and continued investment in artificial intelligence infrastructure. The U.S. economy remained resilient, underpinned by steady consumer spending, while signs of a moderating labor market prompted the Federal Reserve to implement three 25-basis-point rate cuts during the period. Within the fund, In contrast, the financials and consumer discretionary sectors posted negative returns and weighed on overall fund 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
* Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.† Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): S&P Dow Jones Indices LLC. |
||||||||||||||||
| 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 | $ 353,072,000,000 | ||||||||||||||||
| Holdings Count | Holding | 316 | ||||||||||||||||
| Advisory Fees Paid, Amount | $ 848,000,000 | ||||||||||||||||
| Investment Company, Portfolio Turnover | 39.00% | ||||||||||||||||
| Additional Fund Statistics [Text Block] | Key fund statistics
|
||||||||||||||||
| Holdings [Text Block] | Portfolio holdings by sector (percent of net assets)
|
||||||||||||||||
| 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") for the period from September 1, 2025 to August 31, 2026. | ||||||||||||||||
| 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. You can also request this information by contacting us at (800) 421-4225. | ||||||||||||||||
| 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? (based on a hypothetical $10,000 investment)
|
||||||||||||||||
| Expenses Paid, Amount | $ 46 | ||||||||||||||||
| Expense Ratio, Percent | 0.43% | ||||||||||||||||
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-5E shares gained 14.97% for the year ended August 31, 2026. That result compares with a 20.38% 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 U.S. equities posted strong gains during the fund’s fiscal year, driving the S&P 500 Index to record highs. Markets were supported by higher oil prices amid tensions in the Middle East and continued investment in artificial intelligence infrastructure. The U.S. economy remained resilient, underpinned by steady consumer spending, while signs of a moderating labor market prompted the Federal Reserve to implement three 25-basis-point rate cuts during the period. Within the fund, In contrast, the financials and consumer discretionary sectors posted negative returns and weighed on overall fund 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
* Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.† Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): S&P Dow Jones Indices LLC. |
||||||||||||||||
| 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 | $ 353,072,000,000 | ||||||||||||||||
| Holdings Count | Holding | 316 | ||||||||||||||||
| Advisory Fees Paid, Amount | $ 848,000,000 | ||||||||||||||||
| Investment Company, Portfolio Turnover | 39.00% | ||||||||||||||||
| Additional Fund Statistics [Text Block] | Key fund statistics
|
||||||||||||||||
| Holdings [Text Block] | Portfolio holdings by sector (percent of net assets)
|
||||||||||||||||
| 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") for the period from September 1, 2025 to August 31, 2026. | ||||||||||||||||
| 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. You can also request this information by contacting us at (800) 421-4225. | ||||||||||||||||
| 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? (based on a hypothetical $10,000 investment)
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| Expenses Paid, Amount | $ 37 | ||||||||||||||||
| Expense Ratio, Percent | 0.34% | ||||||||||||||||
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-5 shares gained 15.08% for the year ended August 31, 2026. That result compares with a 20.38% 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-R5. What factors influenced results U.S. equities posted strong gains during the fund’s fiscal year, driving the S&P 500 Index to record highs. Markets were supported by higher oil prices amid tensions in the Middle East and continued investment in artificial intelligence infrastructure. The U.S. economy remained resilient, underpinned by steady consumer spending, while signs of a moderating labor market prompted the Federal Reserve to implement three 25-basis-point rate cuts during the period. Within the fund, In contrast, the financials and consumer discretionary sectors posted negative returns and weighed on overall fund results.
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| 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] |
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| Average Annual Return [Table Text Block] | Average annual total returns
* Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.† Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): S&P Dow Jones Indices LLC. |
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| 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 | $ 353,072,000,000 | ||||||||||||||||
| Holdings Count | Holding | 316 | ||||||||||||||||
| Advisory Fees Paid, Amount | $ 848,000,000 | ||||||||||||||||
| Investment Company, Portfolio Turnover | 39.00% | ||||||||||||||||
| Additional Fund Statistics [Text Block] | Key fund statistics
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| Holdings [Text Block] | Portfolio holdings by sector (percent of net assets)
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| 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") for the period from September 1, 2025 to August 31, 2026. | ||||||||||||||||
| 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. You can also request this information by contacting us at (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? (based on a hypothetical $10,000 investment)
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| Expenses Paid, Amount | $ 31 | ||||||||||||||||
| Expense Ratio, Percent | 0.29% | ||||||||||||||||
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-6 shares gained 15.13% for the year ended August 31, 2026. That result compares with a 20.38% 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-R6. What factors influenced results U.S. equities posted strong gains during the fund’s fiscal year, driving the S&P 500 Index to record highs. Markets were supported by higher oil prices amid tensions in the Middle East and continued investment in artificial intelligence infrastructure. The U.S. economy remained resilient, underpinned by steady consumer spending, while signs of a moderating labor market prompted the Federal Reserve to implement three 25-basis-point rate cuts during the period. Within the fund, In contrast, the financials and consumer discretionary sectors posted negative returns and weighed on overall fund results.
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| 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] |
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| Average Annual Return [Table Text Block] | Average annual total returns
* Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.† Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): S&P Dow Jones Indices LLC. |
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| 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 | $ 353,072,000,000 | ||||||||||||||||
| Holdings Count | Holding | 316 | ||||||||||||||||
| Advisory Fees Paid, Amount | $ 848,000,000 | ||||||||||||||||
| Investment Company, Portfolio Turnover | 39.00% | ||||||||||||||||
| Additional Fund Statistics [Text Block] | Key fund statistics
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| Holdings [Text Block] | Portfolio holdings by sector (percent of net assets)
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