v3.25.2
Shareholder Report, Holdings (Details)
Apr. 30, 2025
American Funds® Global Growth Portfolio - Class A | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds® Global Growth Portfolio - Class A | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Global Growth Portfolio - Class A | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Global Growth Portfolio - Class C | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds® Global Growth Portfolio - Class C | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Global Growth Portfolio - Class C | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Global Growth Portfolio - Class T | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds® Global Growth Portfolio - Class T | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Global Growth Portfolio - Class T | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Global Growth Portfolio - Class F1 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds® Global Growth Portfolio - Class F1 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Global Growth Portfolio - Class F1 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Global Growth Portfolio - Class F2 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds® Global Growth Portfolio - Class F2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Global Growth Portfolio - Class F2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Global Growth Portfolio - Class F3 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds® Global Growth Portfolio - Class F3 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Global Growth Portfolio - Class F3 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Global Growth Portfolio - Class 529-A | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds® Global Growth Portfolio - Class 529-A | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Global Growth Portfolio - Class 529-A | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Global Growth Portfolio - Class 529-C | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds® Global Growth Portfolio - Class 529-C | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Global Growth Portfolio - Class 529-C | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Global Growth Portfolio - Class 529-E | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds® Global Growth Portfolio - Class 529-E | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Global Growth Portfolio - Class 529-E | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Global Growth Portfolio - Class 529-T | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds® Global Growth Portfolio - Class 529-T | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Global Growth Portfolio - Class 529-T | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Global Growth Portfolio - Class 529-F-1 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds® Global Growth Portfolio - Class 529-F-1 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Global Growth Portfolio - Class 529-F-1 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Global Growth Portfolio - Class 529-F-2 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds® Global Growth Portfolio - Class 529-F-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Global Growth Portfolio - Class 529-F-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Global Growth Portfolio - Class 529-F-3 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds® Global Growth Portfolio - Class 529-F-3 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Global Growth Portfolio - Class 529-F-3 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Global Growth Portfolio - Class ABLE-A | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds® Global Growth Portfolio - Class ABLE-A | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Global Growth Portfolio - Class ABLE-A | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Global Growth Portfolio - Class ABLE-F-2 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds® Global Growth Portfolio - Class ABLE-F-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Global Growth Portfolio - Class ABLE-F-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Global Growth Portfolio - Class R-1 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds® Global Growth Portfolio - Class R-1 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Global Growth Portfolio - Class R-1 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Global Growth Portfolio - Class R-2 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds® Global Growth Portfolio - Class R-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Global Growth Portfolio - Class R-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Global Growth Portfolio - Class R-2E | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds® Global Growth Portfolio - Class R-2E | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Global Growth Portfolio - Class R-2E | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Global Growth Portfolio - Class R-3 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds Global Growth Portfolio - Class R-3 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Global Growth Portfolio - Class R-3 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Global Growth Portfolio - Class R-4 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds Global Growth Portfolio - Class R-4 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Global Growth Portfolio - Class R-4 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Global Growth Portfolio - Class R-5E | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds Global Growth Portfolio - Class R-5E | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Global Growth Portfolio - Class R-5E | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Global Growth Portfolio - Class R-5 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds Global Growth Portfolio - Class R-5 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Global Growth Portfolio - Class R-5 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Global Growth Portfolio - Class R-6 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 85.00%
American Funds Global Growth Portfolio - Class R-6 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Global Growth Portfolio - Class R-6 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Growth Portfolio - Class A | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Funds® Growth Portfolio - Class A | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds® Growth Portfolio - Class A | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Growth Portfolio - Class C | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Funds® Growth Portfolio - Class C | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds® Growth Portfolio - Class C | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Growth Portfolio - Class T | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Funds® Growth Portfolio - Class T | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds® Growth Portfolio - Class T | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Growth Portfolio - Class F-1 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Funds® Growth Portfolio - Class F-1 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds® Growth Portfolio - Class F-1 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Growth Portfolio - Class F-2 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Funds® Growth Portfolio - Class F-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds® Growth Portfolio - Class F-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Growth Portfolio - Class F-3 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Funds® Growth Portfolio - Class F-3 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds® Growth Portfolio - Class F-3 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Growth Portfolio - Class 529-A | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Funds® Growth Portfolio - Class 529-A | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds® Growth Portfolio - Class 529-A | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Growth Portfolio - Class 529-C | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Funds® Growth Portfolio - Class 529-C | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds® Growth Portfolio - Class 529-C | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Growth Portfolio - Class 529-E | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Funds® Growth Portfolio - Class 529-E | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds® Growth Portfolio - Class 529-E | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth Portfolio - Class 529-T | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Funds Growth Portfolio - Class 529-T | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth Portfolio - Class 529-T | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Fund Growth Portfolio - Class 529-F-1 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Fund Growth Portfolio - Class 529-F-1 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Fund Growth Portfolio - Class 529-F-1 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Fund Growth Portfolio - Class 529-F-2 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Fund Growth Portfolio - Class 529-F-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Fund Growth Portfolio - Class 529-F-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Fund Growth Portfolio - Class 529-F-3 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Fund Growth Portfolio - Class 529-F-3 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Fund Growth Portfolio - Class 529-F-3 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Fund Growth Portfolio - Class ABLE-A | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Fund Growth Portfolio - Class ABLE-A | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Fund Growth Portfolio - Class ABLE-A | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Fund Growth Portfolio - Class ABLE-F-2 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Fund Growth Portfolio - Class ABLE-F-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Fund Growth Portfolio - Class ABLE-F-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth Portfolio Class R-1 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Funds Growth Portfolio Class R-1 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth Portfolio Class R-1 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth Portfolio - Class R-2 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Funds Growth Portfolio - Class R-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth Portfolio - Class R-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth Portfolio - Class R-2E | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Funds Growth Portfolio - Class R-2E | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth Portfolio - Class R-2E | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth Portfolio Class R-3 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Funds Growth Portfolio Class R-3 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth Portfolio Class R-3 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth Portfolio Class R-4 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Funds Growth Portfolio Class R-4 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth Portfolio Class R-4 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth Portfolio Class R-5E | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Funds Growth Portfolio Class R-5E | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth Portfolio Class R-5E | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth Portfolio - Class R-5 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Funds Growth Portfolio - Class R-5 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth Portfolio - Class R-5 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth Portfolio Class R-6 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 80.00%
American Funds Growth Portfolio Class R-6 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth Portfolio Class R-6 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth and Income Portfolio - Class A | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth and Income Portfolio - Class A | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class A | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class A | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds Growth and Income Portfolio - Class A | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Growth and Income Portfolio - Class A | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth and Income Portfolio - Class C | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth and Income Portfolio - Class C | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class C | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class C | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds Growth and Income Portfolio - Class C | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Growth and Income Portfolio - Class C | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth and Income Portfolio - Class T | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth and Income Portfolio - Class T | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class T | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class T | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds Growth and Income Portfolio - Class T | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Growth and Income Portfolio - Class T | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth and Income Portfolio - Class F-1 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth and Income Portfolio - Class F-1 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class F-1 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class F-1 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds Growth and Income Portfolio - Class F-1 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Growth and Income Portfolio - Class F-1 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth and Income Portfolio Class - F-2 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth and Income Portfolio Class - F-2 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio Class - F-2 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio Class - F-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds Growth and Income Portfolio Class - F-2 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Growth and Income Portfolio Class - F-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth and Income Portfolio - Class F-3 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth and Income Portfolio - Class F-3 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class F-3 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class F-3 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds Growth and Income Portfolio - Class F-3 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Growth and Income Portfolio - Class F-3 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth and Income Portfolio - Class 529-A | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth and Income Portfolio - Class 529-A | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class 529-A | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class 529-A | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds Growth and Income Portfolio - Class 529-A | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Growth and Income Portfolio - Class 529-A | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth and Income Portfolio - Class 529-C | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth and Income Portfolio - Class 529-C | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class 529-C | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class 529-C | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds Growth and Income Portfolio - Class 529-C | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Growth and Income Portfolio - Class 529-C | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth and Income Portfolio - Class 529-E | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth and Income Portfolio - Class 529-E | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class 529-E | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class 529-E | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds Growth and Income Portfolio - Class 529-E | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Growth and Income Portfolio - Class 529-E | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth and Income Portfolio - Class 529-T | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth and Income Portfolio - Class 529-T | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class 529-T | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class 529-T | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds Growth and Income Portfolio - Class 529-T | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Growth and Income Portfolio - Class 529-T | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth and Income Portfolio - Class 529-F-1 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth and Income Portfolio - Class 529-F-1 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class 529-F-1 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class 529-F-1 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds Growth and Income Portfolio - Class 529-F-1 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Growth and Income Portfolio - Class 529-F-1 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth and Income Portfolio - Class 529-F-2 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth and Income Portfolio - Class 529-F-2 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class 529-F-2 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class 529-F-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds Growth and Income Portfolio - Class 529-F-2 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Growth and Income Portfolio - Class 529-F-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth and Income Portfolio - Class 529-F-3 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth and Income Portfolio - Class 529-F-3 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class 529-F-3 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class 529-F-3 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds Growth and Income Portfolio - Class 529-F-3 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Growth and Income Portfolio - Class 529-F-3 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth and Income Portfolio - Class ABLE-A | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth and Income Portfolio - Class ABLE-A | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class ABLE-A | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class ABLE-A | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds Growth and Income Portfolio - Class ABLE-A | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Growth and Income Portfolio - Class ABLE-A | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Growth and Income Portfolio - Class ABLE-F-2 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds Growth and Income Portfolio - Class ABLE-F-2 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class ABLE-F-2 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds Growth and Income Portfolio - Class ABLE-F-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds Growth and Income Portfolio - Class ABLE-F-2 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds Growth and Income Portfolio - Class ABLE-F-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Growth and Income Portfolio - Class R-1 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds® Growth and Income Portfolio - Class R-1 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Growth and Income Portfolio - Class R-1 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Growth and Income Portfolio - Class R-1 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds® Growth and Income Portfolio - Class R-1 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Growth and Income Portfolio - Class R-1 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Growth and Income Portfolio - Class R-2 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds® Growth and Income Portfolio - Class R-2 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Growth and Income Portfolio - Class R-2 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Growth and Income Portfolio - Class R-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds® Growth and Income Portfolio - Class R-2 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Growth and Income Portfolio - Class R-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Growth and Income Portfolio - Class R-2E | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds® Growth and Income Portfolio - Class R-2E | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Growth and Income Portfolio - Class R-2E | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Growth and Income Portfolio - Class R-2E | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds® Growth and Income Portfolio - Class R-2E | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Growth and Income Portfolio - Class R-2E | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Growth and Income Portfolio - Class R-3 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds® Growth and Income Portfolio - Class R-3 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Growth and Income Portfolio - Class R-3 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Growth and Income Portfolio - Class R-3 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds® Growth and Income Portfolio - Class R-3 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Growth and Income Portfolio - Class R-3 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Growth and Income Portfolio - Class R-4 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds® Growth and Income Portfolio - Class R-4 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Growth and Income Portfolio - Class R-4 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Growth and Income Portfolio - Class R-4 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds® Growth and Income Portfolio - Class R-4 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Growth and Income Portfolio - Class R-4 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Growth and Income Portfolio - Class R-5E | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds® Growth and Income Portfolio - Class R-5E | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Growth and Income Portfolio - Class R-5E | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Growth and Income Portfolio - Class R-5E | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds® Growth and Income Portfolio - Class R-5E | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Growth and Income Portfolio - Class R-5E | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Growth and Income Portfolio - Class R-5 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds® Growth and Income Portfolio - Class R-5 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Growth and Income Portfolio - Class R-5 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Growth and Income Portfolio - Class R-5 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds® Growth and Income Portfolio - Class R-5 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Growth and Income Portfolio - Class R-5 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Growth and Income Portfolio - Class R-6 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.00%
American Funds® Growth and Income Portfolio - Class R-6 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Growth and Income Portfolio - Class R-6 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Growth and Income Portfolio - Class R-6 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 45.00%
American Funds® Growth and Income Portfolio - Class R-6 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Growth and Income Portfolio - Class R-6 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class A | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class A | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class A | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class A | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class A | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class A | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class C | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class C | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class C | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class C | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class C | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class C | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class T | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class T | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class T | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class T | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class T | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class T | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class F-1 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class F-1 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class F-1 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class F-1 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class F-1 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class F-1 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class F-2 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class F-2 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class F-2 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class F-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class F-2 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class F-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class F-3 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class F-3 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class F-3 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class F-3 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class F-3 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class F-3 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class 529-A | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-A | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-A | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-A | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-A | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-A | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class 529-C | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-C | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-C | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-C | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-C | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-C | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class 529-E | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-E | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-E | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-E | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-E | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-E | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class 529-T | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-T | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-T | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-T | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-T | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-T | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class 529-F-1 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-F-1 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-F-1 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-F-1 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-F-1 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-F-1 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class 529-F-2 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-F-2 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-F-2 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-F-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-F-2 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-F-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class 529-F-3 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-F-3 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-F-3 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-F-3 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-F-3 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class 529-F-3 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class ABLE-A | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class ABLE-A | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class ABLE-A | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class ABLE-A | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class ABLE-A | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class ABLE-A | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class ABLE-F-2 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class ABLE-F-2 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class ABLE-F-2 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class ABLE-F-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class ABLE-F-2 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class ABLE-F-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class R-1 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class R-1 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class R-1 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class R-1 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class R-1 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class R-1 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class R-2 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class R-2 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class R-2 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class R-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class R-2 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class R-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class R-2E | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class R-2E | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class R-2E | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class R-2E | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class R-2E | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class R-2E | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class R-3 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class R-3 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class R-3 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class R-3 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class R-3 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class R-3 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class R-4 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class R-4 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class R-4 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class R-4 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class R-4 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class R-4 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class R-5E | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class R-5E | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class R-5E | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class R-5E | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class R-5E | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class R-5E | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class R-5 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class R-5 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class R-5 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class R-5 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class R-5 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class R-5 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Moderate Growth and Income Portfolio - Class R-6 | Growth funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class R-6 | Balanced funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.00%
American Funds® Moderate Growth and Income Portfolio - Class R-6 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
American Funds® Moderate Growth and Income Portfolio - Class R-6 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
American Funds® Moderate Growth and Income Portfolio - Class R-6 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
American Funds® Moderate Growth and Income Portfolio - Class R-6 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class A | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class A | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class A | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class A | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class C | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class C | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class C | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class C | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class T | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class T | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class T | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class T | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class F-1 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class F-1 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class F-1 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class F-1 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class F-2 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class F-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class F-2 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class F-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class F-3 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class F-3 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class F-3 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class F-3 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class 529-A | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-A | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-A | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-A | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class 529-C | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-C | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-C | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-C | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class 529-E | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-E | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-E | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-E | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class 529-T | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-T | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-T | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-T | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class 529-F-1 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-F-1 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-F-1 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-F-1 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class 529-F-2 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-F-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-F-2 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-F-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class 529-F-3 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-F-3 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-F-3 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class 529-F-3 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class ABLE-A | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class ABLE-A | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class ABLE-A | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class ABLE-A | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class ABLE-F-2 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class ABLE-F-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class ABLE-F-2 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class ABLE-F-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class R-1 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class R-1 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class R-1 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class R-1 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class R-2 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class R-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class R-2 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class R-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class R-2E | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class R-2E | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class R-2E | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class R-2E | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class R-3 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class R-3 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class R-3 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class R-3 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class R-4 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class R-4 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class R-4 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class R-4 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class R-5E | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class R-5E | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class R-5E | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class R-5E | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class R-5 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class R-5 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class R-5 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class R-5 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Conservative Growth and Income Portfolio - Class R-6 | Equity-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.00%
American Funds® Conservative Growth and Income Portfolio - Class R-6 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
American Funds® Conservative Growth and Income Portfolio - Class R-6 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 43.00%
American Funds® Conservative Growth and Income Portfolio - Class R-6 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Tax-Aware Conservative Growth and Income Portfolio - Class A | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 51.00%
American Funds® Tax-Aware Conservative Growth and Income Portfolio - Class A | Tax-exempt fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 49.00%
American Funds® Tax-Aware Conservative Growth and Income Portfolio - Class A | Short-term securities & other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Tax-Aware Conservative Growth and Income Portfolio - Class C | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 51.00%
American Funds® Tax-Aware Conservative Growth and Income Portfolio - Class C | Tax-exempt fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 49.00%
American Funds® Tax-Aware Conservative Growth and Income Portfolio - Class C | Short-term securities & other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Tax-Aware Conservative Growth and Income Portfolio - Class T | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 51.00%
American Funds® Tax-Aware Conservative Growth and Income Portfolio - Class T | Tax-exempt fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 49.00%
American Funds® Tax-Aware Conservative Growth and Income Portfolio - Class T | Short-term securities & other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Tax-Aware Conservative Growth and Income Portfolio - Class F-1 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 51.00%
American Funds® Tax-Aware Conservative Growth and Income Portfolio - Class F-1 | Tax-exempt fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 49.00%
American Funds® Tax-Aware Conservative Growth and Income Portfolio - Class F-1 | Short-term securities & other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Tax-Aware Conservative Growth and Income Portfolio - Class F-2 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 51.00%
American Funds® Tax-Aware Conservative Growth and Income Portfolio - Class F-2 | Tax-exempt fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 49.00%
American Funds® Tax-Aware Conservative Growth and Income Portfolio - Class F-2 | Short-term securities & other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Tax-Aware Conservative Growth and Income Portfolio - Class F-3 | Growth-and-income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 51.00%
American Funds® Tax-Aware Conservative Growth and Income Portfolio - Class F-3 | Tax-exempt fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 49.00%
American Funds® Tax-Aware Conservative Growth and Income Portfolio - Class F-3 | Short-term securities & other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class A | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class A | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class C | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class C | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class T | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class T | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class F-1 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class F-1 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class F-2 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class F-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class F-3 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class F-3 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class 529-A | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class 529-A | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class 529-C | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class 529-C | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class 529-E | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class 529-E | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class 529-T | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class 529-T | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class 529-F-1 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class 529-F-1 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class 529-F-2 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class 529-F-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class 529-F-3 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class 529-F-3 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class ABLE-A | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class ABLE-A | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class ABLE-F-2 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class ABLE-F-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class R-1 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class R-1 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class R-2 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class R-2 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class R-2E | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class R-2E | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class R-3 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class R-3 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class R-4 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class R-4 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class R-5E | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class R-5E | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class R-5 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class R-5 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds® Preservation Portfolio - Class R-6 | Fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00%
American Funds® Preservation Portfolio - Class R-6 | Other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [1]
American Funds Tax-Exempt Preservation Portfolio - Class A | Tax-exempt fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 99.00%
American Funds Tax-Exempt Preservation Portfolio - Class A | Short-term securities & other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
American Funds Tax-Exempt Preservation Portfolio - Class C | Tax-exempt fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 99.00%
American Funds Tax-Exempt Preservation Portfolio - Class C | Short-term securities & other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
American Funds Tax-Exempt Preservation Portfolio - Class T | Tax-exempt fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 99.00%
American Funds Tax-Exempt Preservation Portfolio - Class T | Short-term securities & other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
American Funds Tax-Exempt Preservation Portfolio - Class F-1 | Tax-exempt fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 99.00%
American Funds Tax-Exempt Preservation Portfolio - Class F-1 | Short-term securities & other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
American Funds Tax-Exempt Preservation Portfolio - Class F-2 | Tax-exempt fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 99.00%
American Funds Tax-Exempt Preservation Portfolio - Class F-2 | Short-term securities & other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
American Funds Tax-Exempt Preservation Portfolio - Class F-3 | Tax-exempt fixed income funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 99.00%
American Funds Tax-Exempt Preservation Portfolio - Class F-3 | Short-term securities & other assets less liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
[1] Less than 1%.