Net Assets Investment Company, Portfolio Turnover C000026246 [Member] The New Economy Fund - Class 529-C Investment Type [Axis] Financial Services Sector [Member] Financials [Member] Healthcare Sector [Member] Health care [Member] Other Securities [Member] Bonds Notes And Other Debt Instruments [Member] Short Term Securities And Other Assets Less Liabilities [Member] C000026247 [Member] The New Economy Fund - Class 529-E C000189496 [Member] The New Economy Fund - Class 529-T C000026248 [Member] The New Economy Fund - Class 529-F-1 C000224595 [Member] The New Economy Fund - Class 529-F-2 C000224596 [Member] The New Economy Fund - Class 529-F-3 C000026236 [Member] The New Economy Fund - Class R-1 C000026237 [Member] The New Economy Fund - Class R-2 C000148459 [Member] The New Economy Fund - Class R-2E C000026238 [Member] The New Economy Fund - Class R-3 C000026239 [Member] The New Economy Fund - Class R-4 C000164821 [Member] The New Economy Fund - Class R-5E C000026240 [Member] The New Economy Fund - Class R-5 C000077861 [Member] The New Economy Fund - Class R-6 C000026235 [Member] The New Economy Fund - Class A Consumer discretionary [Member] Information technology [Member] Industrials [Member] C000026242 [Member] The New Economy Fund - Class C C000189497 [Member] The New Economy Fund - Class T C000026243 [Member] The New Economy Fund - Class F-1 C000068559 [Member] The New Economy Fund - Class F-2 C000179981 [Member] The New Economy Fund - Class F-3 C000026244 [Member] The New Economy Fund - Class 529-A