Shareholder Report, Line Graph (Details) - USD ($) |
8 Months Ended | 12 Months Ended | 17 Months Ended | 20 Months Ended | 24 Months Ended | 29 Months Ended | 32 Months Ended | 36 Months Ended | 41 Months Ended | 44 Months Ended | 48 Months Ended | 53 Months Ended | 56 Months Ended | 60 Months Ended | 65 Months Ended | 68 Months Ended | 72 Months Ended | 77 Months Ended | 84 Months Ended | 89 Months Ended | 96 Months Ended | 101 Months Ended | 108 Months Ended | 113 Months Ended | 120 Months Ended | ||||
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Oct. 30, 2020 |
Jan. 27, 2017 |
Jun. 30, 2016 |
Jun. 30, 2021 |
Jun. 30, 2026 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2022 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2023 |
Jun. 30, 2019 |
Jun. 30, 2020 |
Jun. 30, 2024 |
Jun. 30, 2020 |
Jun. 30, 2021 |
Jun. 30, 2025 |
Jun. 30, 2021 |
Jun. 30, 2022 |
Jun. 30, 2026 |
Jun. 30, 2022 |
Jun. 30, 2023 |
Jun. 30, 2023 |
Jun. 30, 2024 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2026 |
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| International Growth and Income Fund - Class A | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | International Growth and Income Fund — Class A (with sales charge) | ||||||||||||||||||||||||||||
| Accumulated Value | $ 9,424 | $ 11,101 | $ 11,787 | $ 12,063 | $ 11,392 | $ 15,712 | $ 12,690 | $ 14,607 | $ 16,176 | $ 19,143 | $ 23,963 | ||||||||||||||||||
| International Growth and Income Fund - Class C | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | International Growth and Income Fund — Class C (with sales charge) | ||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,683 | 12,309 | 12,504 | 11,718 | 16,044 | 12,859 | 14,693 | 16,153 | 19,116 | 23,929 | ||||||||||||||||||
| International Growth and Income Fund - Class F1 | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | International Growth and Income Fund — Class F-1 | ||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,774 | 12,499 | 12,785 | 12,075 | 16,651 | 13,444 | 15,477 | 17,133 | 20,272 | 25,370 | ||||||||||||||||||
| International Growth and Income Fund - Class F-2 | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | International Growth and Income Fund — Class F-2 | ||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,804 | 12,561 | 12,888 | 12,202 | 16,871 | 13,659 | 15,770 | 17,507 | 20,776 | 26,070 | ||||||||||||||||||
| International Growth and Income Fund - Class F3 | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | International Growth and Income Fund — Class F-3 | ||||||||||||||||||||||||||||
| Accumulated Value | $ 10,000 | $ 11,761 | $ 12,079 | $ 11,450 | $ 15,851 | $ 12,845 | $ 14,845 | $ 16,499 | $ 19,600 | $ 24,622 | |||||||||||||||||||
| International Growth and Income Fund - Class 529-A | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | International Growth and Income Fund — Class 529-A (with sales charge) | ||||||||||||||||||||||||||||
| Accumulated Value | 9,649 | 11,358 | 12,051 | 12,329 | 11,639 | 16,051 | 12,957 | 14,913 | 16,509 | 19,529 | 24,442 | ||||||||||||||||||
| International Growth and Income Fund - Class 529-C | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | International Growth and Income Fund — Class 529-C (with sales charge) | ||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,679 | 12,301 | 12,487 | 11,699 | 16,012 | 12,926 | 14,877 | 16,470 | 19,482 | 24,384 | ||||||||||||||||||
| International Growth and Income Fund - Class 529-E | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | International Growth and Income Fund — Class 529-E | ||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,745 | 12,441 | 12,699 | 11,967 | 16,470 | 13,267 | 15,240 | 16,842 | 19,882 | 24,831 | ||||||||||||||||||
| International Growth and Income Fund - Class 529-F-2 | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | International Growth and Income Fund — Class 529-F-2 | ||||||||||||||||||||||||||||
| Accumulated Value | $ 10,000 | $ 13,512 | $ 10,940 | $ 12,629 | $ 14,024 | $ 16,638 | $ 20,883 | ||||||||||||||||||||||
| International Growth and Income Fund - Class 529-F-3 | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | International Growth and Income Fund — Class 529-F-3 | ||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 13,517 | 10,948 | 12,643 | 14,048 | 16,675 | 20,940 | ||||||||||||||||||||||
| International Growth and Income Fund - Class R-1 | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | International Growth and Income Fund — Class R-1 | ||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,689 | 12,318 | 12,518 | 11,737 | 16,077 | 12,893 | 14,731 | 16,196 | 19,022 | 23,638 | ||||||||||||||||||
| International Growth and Income Fund - Class R-2 | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | International Growth and Income Fund — Class R-2 | ||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,689 | 12,318 | 12,515 | 11,730 | 16,064 | 12,876 | 14,719 | 16,182 | 19,011 | 23,627 | ||||||||||||||||||
| International Growth and Income Fund - Class R-2E | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | International Growth and Income Fund — Class R-2E | ||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,724 | 12,391 | 12,620 | 11,869 | 16,300 | 13,105 | 15,025 | 16,570 | 19,523 | 24,332 | ||||||||||||||||||
| International Growth and Income Fund - Class R-3 | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | International Growth and Income Fund — Class R-3 | ||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,740 | 12,427 | 12,680 | 11,940 | 16,421 | 13,225 | 15,183 | 16,770 | 19,786 | 24,695 | ||||||||||||||||||
| International Growth and Income Fund - Class R-4 | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | International Growth and Income Fund — Class R-4 | ||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,777 | 12,503 | 12,796 | 12,087 | 16,677 | 13,470 | 15,511 | 17,181 | 20,334 | 25,461 | ||||||||||||||||||
| International Growth and Income Fund - Class R-5E | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | International Growth and Income Fund — Class R-5E | ||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,798 | 12,549 | 12,871 | 12,182 | 16,840 | 13,627 | 15,721 | 17,454 | 20,696 | 25,961 | ||||||||||||||||||
| International Growth and Income Fund - Class R-5 | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | International Growth and Income Fund — Class R-5 | ||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,813 | 12,578 | 12,911 | 12,233 | 16,932 | 13,720 | 15,848 | 17,607 | 20,901 | 26,242 | ||||||||||||||||||
| International Growth and Income Fund - Class R-6 | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | International Growth and Income Fund — Class R-6 | ||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 11,817 | 12,590 | 12,932 | 12,259 | 16,971 | 13,754 | 15,894 | 17,670 | 20,989 | 26,365 | ||||||||||||||||||
| MSCI ACWI (All Country World Index) ex USA [Member] | |||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI ACWI (All Country World Index) ex USA | ||||||||||||||||||||||||||||
| Accumulated Value | $ 10,000 | $ 10,000 | $ 10,000 | $ 13,054 | $ 12,045 | $ 11,753 | $ 10,519 | $ 12,922 | $ 11,904 | $ 11,856 | $ 13,088 | $ 11,333 | $ 13,234 | $ 12,460 | $ 15,381 | $ 15,580 | $ 16,910 | $ 12,394 | $ 19,889 | $ 13,626 | $ 13,970 | $ 15,359 | $ 15,593 | $ 17,144 | $ 18,357 | $ 20,182 | $ 23,434 | $ 25,764 | |