Shareholder Report, Line Graph (Details) - USD ($) |
1 Months Ended | 2 Months Ended | 3 Months Ended | 4 Months Ended | 5 Months Ended | 12 Months Ended | |
|---|---|---|---|---|---|---|---|
Jan. 14, 2025 |
Jan. 31, 2025 |
Feb. 28, 2025 |
Mar. 31, 2025 |
Apr. 30, 2025 |
May 31, 2025 |
May 31, 2025 |
|
| Capital Group U.S. Small and Mid Cap ETF | |||||||
| Account Value [Line Items] | |||||||
| Line Graph and Table Measure Name | Capital Group U.S. Small and Mid Cap ETF (at NAV) | ||||||
| Accumulated Value | $ 10,000 | $ 10,298 | $ 9,957 | $ 9,376 | $ 9,231 | $ 10,071 | |
| Russell 3000 Index [Member] | |||||||
| Account Value [Line Items] | |||||||
| Line Graph and Table Measure Name | Russell 3000 Index | ||||||
| Accumulated Value | 10,000 | 10,357 | 10,158 | 9,566 | 9,501 | 10,104 | |
| Russell 2500 Index [Member] | |||||||
| Account Value [Line Items] | |||||||
| Line Graph and Table Measure Name | Russell 2500 Index | ||||||
| Accumulated Value | 10,000 | 10,303 | 9,819 | 9,204 | 9,014 | 9,553 | |
| Russell Midcap Index [Member] | |||||||
| Account Value [Line Items] | |||||||
| Line Graph and Table Measure Name | Russell Midcap Index | ||||||
| Accumulated Value | $ 10,000 | $ 10,330 | $ 10,036 | $ 9,571 | $ 9,472 | $ 10,014 |