Net Assets Investment Company, Portfolio Turnover C000026375 [Member] New World Fund® - Class A C000026382 [Member] New World Fund® - Class C C000026380 [Member] New World Fund® - Class R-5 C000077878 [Member] New World Fund® - Class R-6 C000148355 [Member] New World Fund® - Class R-2E C000026378 [Member] New World Fund® - Class R-3 C000026379 [Member] New World Fund® - Class R-4 C000164813 [Member] New World Fund® - Class R-5E C000026386 [Member] New World Fund® - Class 529-C C000026387 [Member] New World Fund® - Class 529-E C000189488 [Member] New World Fund® - Class 529-T C000026388 [Member] New World Fund® - Class 529-F-1 C000224597 [Member] New World Fund® - Class 529-F-2 C000224598 [Member] New World Fund® - Class 529-F-3 C000026376 [Member] New World Fund® - Class R-1 C000026377 [Member] New World Fund® - Class R-2 C000189489 [Member] New World Fund® - Class T C000026383 [Member] New World Fund® - Class F-1 C000068580 [Member] New World Fund® - Class F-2 C000179977 [Member] New World Fund® - Class F-3 C000026384 [Member] New World Fund® - Class 529-A Investment Type [Axis] Financial Services Sector [Member] Other securities [Member] Bonds Notes And Other Debt Instruments [Member] Bonds, notes & other debt instruments [Member] Short Term Securities And Other Assets Less Liabilities [Member] Short-term securities & other assets less liabilities [Member]