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Period End Date Document Type Document Type Entity Central Index Key Central Index Key Entity [Domain] Series Entity Registrant Name Registrant Name Expense Breakpoint Discounts Expense Breakpoint Discounts [Text] Expense Breakpoint Minimum Investment Required Amount Expense Breakpoint, Minimum Investment Required [Amount] Expense Example [Abstract] Expense Example: Expense Example By Year Caption Expense Example by, Year, Caption [Text] Expense Example Heading Expense Example [Heading] Expense Example Narrative [Text Block] Expense Example Narrative [Text Block] Expense Example No Redemption [Abstract] Expense Example, No Redemption: Expense Example No Redemption By Year Caption Expense Example, No Redemption, By Year, Caption [Text] Expense Example No Redemption Table [Text Block] Expense Example, No Redemption [Table] Expense Example No Redemption Year 01 Expense Example, No Redemption, 1 Year Expense Example No Redemption Year 03 Expense Example, No Redemption, 3 Years Expense Example No Redemption Year 05 Expense Example, No Redemption, 5 Years Expense Example No Redemption Year 10 Expense Example, No Redemption, 10 Years Expense Example With Redemption Table [Text Block] Expense Example, With Redemption [Table] Expense Example Year 01 Expense Example, with Redemption, 1 Year Expense Example Year 03 Expense Example, with Redemption, 3 Years Expense Example Year 05 Expense Example, with Redemption, 5 Years Expense Example Year 10 Expense Example, with Redemption, 10 Years Expense Heading Expense [Heading] Expense Narrative [Text Block] Expense Narrative [Text Block] Expenses Over Assets Total annual fund operating expenses Fee Waiver Or Reimbursement Over Assets Fee waiver Fee waiver and/or expense reimbursement Fee waiver and/or expense reimbursement Fee waiver Fee Waiver Or Reimbursement Over Assets Date Of Termination Fee Waiver or Reimbursement over Assets, Date of Termination Legal Entity [Axis] Series [Axis] Management Fees Over Assets Management fees 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Summary S 000036469 [Member] American Funds Global Growth PortfolioSM (Prospectus Summary) Trading Symbol Trading Symbol