Shareholder Report, Line Graph (Details) - USD ($) |
7 Months Ended | 10 Months Ended | 12 Months Ended | 19 Months Ended | 22 Months Ended | 24 Months Ended | 31 Months Ended | 34 Months Ended | 36 Months Ended | 43 Months Ended | 46 Months Ended | 48 Months Ended | 55 Months Ended | 58 Months Ended | 60 Months Ended | 67 Months Ended | 70 Months Ended | 72 Months Ended | 79 Months Ended | 84 Months Ended | 91 Months Ended | 96 Months Ended | 103 Months Ended | 108 Months Ended | 115 Months Ended | 120 Months Ended | ||||
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Oct. 30, 2020 |
Jan. 27, 2017 |
Aug. 31, 2016 |
Aug. 31, 2017 |
Aug. 31, 2021 |
Aug. 31, 2026 |
Aug. 31, 2017 |
Aug. 31, 2018 |
Aug. 31, 2022 |
Aug. 31, 2018 |
Aug. 31, 2019 |
Aug. 31, 2023 |
Aug. 31, 2019 |
Aug. 31, 2020 |
Aug. 31, 2024 |
Aug. 31, 2020 |
Aug. 31, 2021 |
Aug. 31, 2025 |
Aug. 31, 2021 |
Aug. 31, 2022 |
Aug. 31, 2026 |
Aug. 31, 2022 |
Aug. 31, 2023 |
Aug. 31, 2023 |
Aug. 31, 2024 |
Aug. 31, 2024 |
Aug. 31, 2025 |
Aug. 31, 2025 |
Aug. 31, 2026 |
Aug. 31, 2026 |
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| The Growth Fund of America® - Class A | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | The Growth Fund of America — Class A (with sales charge) | |||||||||||||||||||||||||||||
| Accumulated Value | $ 9,425 | $ 11,273 | $ 13,921 | $ 13,738 | $ 18,831 | $ 24,384 | $ 18,586 | $ 21,857 | $ 28,427 | $ 35,039 | $ 40,226 | |||||||||||||||||||
| The Growth Fund of America - Class C | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | The Growth Fund of America — Class C (with sales charge) | |||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,863 | 14,537 | 14,232 | 19,365 | 24,891 | 18,828 | 21,977 | 28,369 | 34,968 | 40,144 | |||||||||||||||||||
| The Growth Fund of America® - Class F-1 | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | The Growth Fund of America — Class F-1 | |||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,950 | 14,751 | 14,545 | 19,932 | 25,793 | 19,649 | 23,100 | 30,028 | 36,995 | 42,447 | |||||||||||||||||||
| The Growth Fund of America® - Class F-2 | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | The Growth Fund of America — Class F-2 | |||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,983 | 14,829 | 14,665 | 20,147 | 26,143 | 19,968 | 23,536 | 30,672 | 37,884 | 43,574 | |||||||||||||||||||
| The Growth Fund of America® - Class F-3 | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | The Growth Fund of America — Class F-3 | |||||||||||||||||||||||||||||
| Accumulated Value | $ 10,000 | $ 11,023 | $ 13,654 | $ 13,515 | $ 18,588 | $ 24,142 | $ 18,461 | $ 21,783 | $ 28,417 | $ 35,136 | $ 40,461 | |||||||||||||||||||
| The Growth Fund of America® - Class 529-A | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | The Growth Fund of America — Class 529-A (with sales charge) | |||||||||||||||||||||||||||||
| Accumulated Value | 9,650 | 11,531 | 14,231 | 14,034 | 19,228 | 24,889 | 18,967 | 22,296 | 28,986 | 35,720 | 40,995 | |||||||||||||||||||
| The Growth Fund of America® - Class 529-C | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | The Growth Fund of America — Class 529-C (with sales charge) | |||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,859 | 14,522 | 14,216 | 19,332 | 24,840 | 18,930 | 22,252 | 28,928 | 35,649 | 40,914 | |||||||||||||||||||
| The Growth Fund of America® - Class 529-E | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | The Growth Fund of America — Class 529-E | |||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,920 | 14,675 | 14,440 | 19,739 | 25,491 | 19,377 | 22,723 | 29,473 | 36,230 | 41,470 | |||||||||||||||||||
| The Growth Fund of America® - Class 529-F-2 | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | The Growth Fund of America — Class 529-F-2 | |||||||||||||||||||||||||||||
| Accumulated Value | $ 10,000 | $ 13,837 | $ 10,570 | $ 12,461 | $ 16,239 | $ 20,059 | $ 23,076 | |||||||||||||||||||||||
| The Growth Fund of America® - Class 529-F-3 | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | The Growth Fund of America — Class 529-F-3 | |||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 13,845 | 10,580 | 12,477 | 16,268 | 20,105 | 23,136 | |||||||||||||||||||||||
| The Growth Fund of America® - Class R-1 | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | The Growth Fund of America — Class R-1 | |||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,865 | 14,535 | 14,233 | 19,359 | 24,875 | 18,814 | 21,960 | 28,342 | 34,667 | 39,489 | |||||||||||||||||||
| The Growth Fund of America® - Class R-2 | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | The Growth Fund of America — Class R-2 | |||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,863 | 14,539 | 14,234 | 19,360 | 24,874 | 18,812 | 21,955 | 28,331 | 34,655 | 39,468 | |||||||||||||||||||
| The Growth Fund of America® - Class R-2E | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | The Growth Fund of America — Class R-2E | |||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,902 | 14,628 | 14,363 | 19,597 | 25,251 | 19,152 | 22,419 | 29,016 | 35,594 | 40,662 | |||||||||||||||||||
| The Growth Fund of America® - Class R-3 | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | The Growth Fund of America — Class R-3 | |||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,918 | 14,667 | 14,426 | 19,711 | 25,436 | 19,325 | 22,655 | 29,365 | 36,079 | 41,276 | |||||||||||||||||||
| The Growth Fund of America® - Class R-4 | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | The Growth Fund of America — Class R-4 | |||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,954 | 14,757 | 14,554 | 19,948 | 25,822 | 19,673 | 23,133 | 30,076 | 37,059 | 42,526 | |||||||||||||||||||
| The Growth Fund of America® - Class R-5E | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | The Growth Fund of America — Class R-5E | |||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,978 | 14,820 | 14,646 | 20,117 | 26,090 | 19,917 | 23,466 | 30,571 | 37,745 | 43,398 | |||||||||||||||||||
| The Growth Fund of America® - Class R-5 | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | The Growth Fund of America — Class R-5 | |||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,990 | 14,844 | 14,684 | 20,187 | 26,209 | 20,030 | 23,621 | 30,804 | 38,070 | 43,812 | |||||||||||||||||||
| The Growth Fund of America® - Class R-6 | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | The Growth Fund of America — Class R-6 | |||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,995 | 14,859 | 14,709 | 20,229 | 26,276 | 20,091 | 23,707 | 30,932 | 38,246 | 44,034 | |||||||||||||||||||
| Standard & Poor's 500 Index [Member] | ||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | S&P 500 Index | |||||||||||||||||||||||||||||
| Accumulated Value | $ 10,000 | $ 10,000 | $ 10,000 | $ 10,910 | $ 14,007 | $ 11,623 | $ 13,055 | $ 12,434 | $ 13,909 | $ 13,436 | $ 14,417 | $ 14,315 | $ 16,383 | $ 18,329 | $ 17,455 | $ 21,490 | $ 21,240 | $ 22,895 | $ 19,077 | $ 25,568 | $ 20,325 | $ 22,118 | $ 23,566 | $ 28,120 | $ 29,960 | $ 32,586 | $ 34,718 | $ 39,227 | $ 41,793 | |