Net Assets Investment Company, Portfolio Turnover C000215511 [Member] American Funds® Global Insight Fund - Class A C000215510 [Member] American Funds® Global Insight Fund - Class C C000215504 [Member] American Funds® Global Insight Fund - Class T C000215509 [Member] American Funds® Global Insight Fund - Class F-1 C000215508 [Member] American Funds® Global Insight Fund - Class F-2 C000215507 [Member] American Funds® Global Insight Fund - Class F-3 C000215499 [Member] American Funds® Global Insight Fund - Class 529-A C000215515 [Member] American Funds® Global Insight Fund - Class 529-C C000215514 [Member] American Funds® Global Insight Fund - Class 529-E C000215512 [Member] American Funds® Global Insight Fund - Class 529-T C000215513 [Member] American Funds® Global Insight Fund - Class 529-F-1 C000224589 [Member] American Funds® Global Insight Fund - Class 529-F-2 C000224590 [Member] American Funds® Global Insight Fund - Class 529-F-3 C000215506 [Member] American Funds® Global Insight Fund - Class R-1 C000215505 [Member] American Funds® Global Insight Fund - Class R-2 C000215503 [Member] American Funds® Global Insight Fund - Class R-2E C000215502 [Member] American Funds® Global Insight Fund - Class R-3 C000215501 [Member] American Funds® Global Insight Fund - Class R-4 C000215516 [Member] American Funds® Global Insight Fund - Class R-5E C000215500 [Member] American Funds® Global Insight Fund - Class R-5 C000215498 [Member] American Funds® Global Insight Fund - Class R-6 Investment Type [Axis] Financial Services Sector [Member] Healthcare Sector [Member] Short Term Securities And Other Assets Less Liabilities [Member] Short-term securities & other assets less liabilities [Member]