| Shareholder Report | 12 Months Ended |
| Nov. 30, 2024 USD ($) Holding |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | The New Economy Fund |
| Entity Central Index Key | 0000719608 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Nov. 30, 2024 |
| The New Economy Fund - Class A | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class A |
| Trading Symbol | ANEFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 $ 0.75 % |
| Expenses Paid, Amount | $ 87 |
| Expense Ratio, Percent | 0.75% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class A shares gained 31.99% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World 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 During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class A (with sales charge) * 24.40 % 10.55 % 10.53 % The New Economy Fund — Class A (without sales charge) * 31.99 % 11.86 % 11.19 % MSCI ACWI (All Country World Index) † 26.12 % 11.36 % 9.28 % S&P 500 Index † 33.89 % 15.77 % 13.35 % * † |
| 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by se cto |
| The New Economy Fund - Class C | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class C |
| Trading Symbol | ANFCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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] | 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 C $ 1.50 % |
| Expenses Paid, Amount | $ 173 |
| Expense Ratio, Percent | 1.50% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class C shares gained 31.00% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World 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 During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class C (with sales charge) * 30.00 % 11.03 % 10.50 % The New Economy Fund — Class C (without sales charge) * 31.00 % 11.03 % 10.50 % MSCI ACWI (All Country World Index) † 26.12 % 11.36 % 9.28 % S&P 500 Index † 33.89 % 15.77 % 13.35 % * † |
| 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector assets |
| The New Economy Fund - Class T | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class T |
| Trading Symbol | TNEEX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 T $ 0.49 % |
| Expenses Paid, Amount | $ 57 |
| Expense Ratio, Percent | 0.49% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class T shares gained 32.31% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World Index). What factors influenced results During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class T (with sales charge) 2 29.00 % 11.57 % 12.73 % The New Economy Fund — Class T (without sales charge) 2 32.31 % 12.14 % 13.10 % MSCI ACWI (All Country World Index) 3 26.12 % 11.36 % 10.90 % S&P 500 Index 3 33.89 % 15.77 % 15.05 % 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The New Economy Fund - Class F1 | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class F-1 |
| Trading Symbol | ANFFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 $ 0.79 % |
| Expenses Paid, Amount | $ 92 |
| Expense Ratio, Percent | 0.79% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class F-1 shares gained 31.94% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World 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 During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class F-1 * 31.94 % 11.82 % 11.13 % MSCI ACWI (All Country World Index) † 26.12 % 11.36 % 9.28 % S&P 500 Index † 33.89 % 15.77 % 13.35 % * † unmanaged |
| 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The New Economy Fund - Class F2 | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class F-2 |
| Trading Symbol | NEFFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 $ 0.51 % |
| Expenses Paid, Amount | $ 59 |
| Expense Ratio, Percent | 0.51% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class F-2 shares gained 32.31% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World 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 During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class F-2 * 32.31 % 12.13 % 11.44 % MSCI ACWI (All Country World Index) † 26.12 % 11.36 % 9.28 % S&P 500 Index † 33.89 % 15.77 % 13.35 % * † |
| 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The New Economy Fund - Class F3 | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class F-3 |
| Trading Symbol | FNEFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 $ 0.41 % |
| Expenses Paid, Amount | $ 48 |
| Expense Ratio, Percent | 0.41% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class F-3 shares gained 32.43% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World 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 During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class F-3 2 32.43 % 12.25 % 13.45 % MSCI ACWI (All Country World Index) 3 26.12 % 11.36 % 11.05 % S&P 500 Index 3 33.89 % 15.77 % 15.10 % 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The New Economy Fund - Class 529-A | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class 529-A |
| Trading Symbol | CNGAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 $ 0.78 % |
| Expenses Paid, Amount | $ 90 |
| Expense Ratio, Percent | 0.78% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-A shares gained 31.94% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World 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 During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class 529-A (with sales charge) * 27.34 % 11.03 % 10.74 % The New Economy Fund — Class 529-A (without sales charge) * 31.94 % 11.83 % 11.13 % MSCI ACWI (All Country World Index) † 26.12 % 11.36 % 9.28 % S&P 500 Index † 33.89 % 15.77 % 13.35 % * † |
| 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid ( in $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The New Economy Fund - Class 529-C | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class 529-C |
| Trading Symbol | CNGCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 $ 1.54 % |
| Expenses Paid, Amount | $ 178 |
| Expense Ratio, Percent | 1.54% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-C shares gained 30.95% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World 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 During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class 529-C (with sales charge) * 29.95 % 10.98 % 10.70 % The New Economy Fund — Class 529-C (without sales charge) * 30.95 % 10.98 % 10.70 % MSCI ACWI (All Country World Index) † 26.12 % 11.36 % 9.28 % S&P 500 Index † 33.89 % 15.77 % 13.35 % * † |
| 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The New Economy Fund Class 529-E | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class 529-E |
| Trading Symbol | CNGEX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 Class 529-E $ 1.01 % |
| Expenses Paid, Amount | $ 117 |
| Expense Ratio, Percent | 1.01% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-E shares gained 31.62% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World 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 During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class 529-E * 31.62 % 11.56 % 10.87 % MSCI ACWI (All Country World Index) † 26.12 % 11.36 % 9.28 % S&P 500 Index † 33.89 % 15.77 % 13.35 % * † |
| 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The New Economy Fund - Class 529-T | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class 529-T |
| Trading Symbol | TENEX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 $ 0.55 % |
| Expenses Paid, Amount | $ 64 |
| Expense Ratio, Percent | 0.55% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-T shares gained 32.25% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World Index). What factors influenced results During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class 529-T (with sales charge) 2 28.95 % 11.51 % 12.67 % The New Economy Fund — Class 529-T (without sales charge) 2 32.25 % 12.08 % 13.04 % MSCI ACWI (All Country World Index) 3 26.12 % 11.36 % 10.90 % S&P 500 Index 3 33.89 % 15.77 % 15.05 % 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The New Economy Fund - Class 529-F-1 | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class 529-F-1 |
| Trading Symbol | CNGFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 $ 0.60 % |
| Expenses Paid, Amount | $ 70 |
| Expense Ratio, Percent | 0.60% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-F-1 shares gained 32.15% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World 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 During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class 529-F-1 * 32.15 % 12.05 % 11.35 % MSCI ACWI (All Country World Index) † 26.12 % 11.36 % 9.28 % S&P 500 Index † 33.89 % 15.77 % 13.35 % * † |
| 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The New Economy Fund Class 529-F-2 | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class 529-F-2 |
| Trading Symbol | FNEEX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 $ 0.52 % |
| Expenses Paid, Amount | $ 60 |
| Expense Ratio, Percent | 0.52% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-F-2 shares gained 32.28% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World 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 During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class 529-F-2 2 32.28 % 10.56 % MSCI ACWI (All Country World Index) 3 26.12 % 13.42 % S&P 500 Index 3 33.89 % 17.97 % 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The New Economy Fund Class 529-F-3 | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class 529-F-3 |
| Trading Symbol | FNNEX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 ? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 529-F-3 $ 0.46 % |
| Expenses Paid, Amount | $ 53 |
| Expense Ratio, Percent | 0.46% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class 529-F-3 shares gained 32.36% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World 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 During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class 529-F-3 2 32.36 % 10.62 % MSCI ACWI (All Country World Index) 3 26.12 % 13.42 % S&P 500 Index 3 33.89 % 17.97 % 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The New Economy Fund® Class R-1 | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class R-1 |
| Trading Symbol | RNGAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 $ 1.49 % |
| Expenses Paid, Amount | $ 172 |
| Expense Ratio, Percent | 1.49% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-1 shares gained 31.00% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World 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 During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class R-1 * 31.00 % 11.03 % 10.34 % MSCI ACWI (All Country World Index) † 26.12 % 11.36 % 9.28 % S&P 500 Index † 33.89 % 15.77 % 13.35 % * † unmanaged |
| 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The New Economy Fund® Class R-2 | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class R-2 |
| Trading Symbol | RNGBX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 $ 1.49 % |
| Expenses Paid, Amount | $ 172 |
| Expense Ratio, Percent | 1.49% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-2 shares gained 31.00% for the year ended November 30, 2024. That result capitalgroup.com/mutual-fund-returns-R2 What factors influenced results During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class R-2 * 31.00 % 11.02 % 10.34 % MSCI ACWI (All Country World Index) † 26.12 % 11.36 % 9.28 % S&P 500 Index † 33.89 % 15.77 % 13.35 % * † |
| 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The New Economy Fund® Class R-2E | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class R-2E |
| Trading Symbol | RNNEX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 $ 1.20 % |
| Expenses Paid, Amount | $ 139 |
| Expense Ratio, Percent | 1.20% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-2E shares gained 31.37% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World 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 During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class R-2E * 31.37 % 11.35 % 10.73 % MSCI ACWI (All Country World Index) † 26.12 % 11.36 % 9.28 % S&P 500 Index † 33.89 % 15.77 % 13.35 % * † |
| 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The New Economy Fund® Class R-3 | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class R-3 |
| Trading Symbol | RNGCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 ? hypothetical Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-3 $ 1.05 % |
| Expenses Paid, Amount | $ 122 |
| Expense Ratio, Percent | 1.05% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-3 shares gained 31.56% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World 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 During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class R-3 * 31.56 % 11.52 % 10.83 % MSCI ACWI (All Country World Index) † 26.12 % 11.36 % 9.28 % S&P 500 Index † 33.89 % 15.77 % 13.35 % * † unmanaged |
| 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The New Economy Fund® Class R-4 | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class R-4 |
| Trading Symbol | RNGEX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 ? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-4 $ 0.75 % |
| Expenses Paid, Amount | $ 87 |
| Expense Ratio, Percent | 0.75% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-4 shares gained 31.97% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World 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 During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class R-4 * 31.97 % 11.86 % 11.17 % MSCI ACWI (All Country World Index) † 26.12 % 11.36 % 9.28 % S&P 500 Index † 33.89 % 15.77 % 13.35 % * † |
| 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The New Economy Fund® Class R-5E | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class R-5E |
| Trading Symbol | RNGHX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-5E $ 0.56 % |
| Expenses Paid, Amount | $ 65 |
| Expense Ratio, Percent | 0.56% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-5E shares gained 32.24% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World 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 During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class R-5E 2 32.24 % 12.08 % 12.19 % MSCI ACWI (All Country World Index) 3 26.12 % 11.36 % 10.55 % S&P 500 Index 3 33.89 % 15.77 % 14.49 % 1 2 3 unmanaged therefore |
| 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The New Economy Fund® Class R-5 | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class R-5 |
| Trading Symbol | RNGFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 ? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-5 $ 0.46 % |
| Expenses Paid, Amount | $ 53 |
| Expense Ratio, Percent | 0.46% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-5 shares gained 32.36% for the year ended November capitalgroup.com/mutual-fund-returns-R5 What factors influenced results During the fund’s fiscal year, the U.S. saw solid consumer spending, a healthy job market, easing inflation and surging exports. Europe and Japan had modest economic growth. The U.K. contracted in September after earlier gains. Growth picked up in mainland China amid recent supportive government policy shifts. In India, government spending drove manufacturing and construction. Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class R-5 * 32.36 % 12.19 % 11.51 % MSCI ACWI (All Country World Index) † 26.12 % 11.36 % 9.28 % S&P 500 Index † 33.89 % 15.77 % 13.35 % * † unmanaged 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
| The New Economy Fund - Class R-6 | |
| Shareholder Report [Line Items] | |
| Fund Name | The New Economy Fund® |
| Class Name | Class R-6 |
| Trading Symbol | RNGGX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about The New Economy Fund (the "fund") for the period from December 1, 2023 to November 30, 2024. |
| 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 |
| 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 ? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-6 $ 0.41 % |
| Expenses Paid, Amount | $ 48 |
| Expense Ratio, Percent | 0.41% |
| Factors Affecting Performance [Text Block] | Management's discussion of fund performance The fund’s Class R-6 shares gained 32.41% for the year ended November 30, 2024. That result compares with a 26.12% gain for the MSCI ACWI (All Country World Index). For information on returns for additional periods, including the fund lifetime, please refer to capitalgroup.com/mutual-fund-returns-R6 Every sector rose, with information technology, financials and consumer discretionary being most additive to the overall portfolio return. Companies in other innovative areas with strong underlying structural growth, such as in industrials and communication services, also contributed. Geographically, investments in Canada, the Pacific Rim and the U.S. were most additive. Meanwhile, positive returns in the energy, health care and consumer staples sectors lagged the broader portfolio’s return, while a negative return in China detracted. |
| 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 New Economy Fund — Class R-6 * 32.41 % 12.25 % 11.56 % MSCI ACWI (All Country World Index) † 26.12 % 11.36 % 9.28 % S&P 500 Index † 33.89 % 15.77 % 13.35 % * † |
| 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 | $ 36,710,000,000 |
| Holdings Count | Holding | 219 |
| Advisory Fees Paid, Amount | $ 123,000,000 |
| Investment Company, Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 219 Total advisory fees paid (in millions) $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | Portfolio holdings by sector |
