v3.25.2
Shareholder Report, Average Annual Return (Details)
 5 Months Ended 12 Months Ended
May 31, 2025
May 31, 2025
Capital Group U.S. Small and Mid Cap ETF    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name   Capital Group U.S. Small and Mid Cap ETF (at NAV)
Average Annual Return, Percent [1],[2] 0.71%  
Russell 3000 Index [Member]    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name   Russell 3000 Index
Average Annual Return, Percent [2],[3] 1.04%  
Russell 2500 Index [Member]    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name   Russell 2500 Index
Average Annual Return, Percent [2],[3] (4.47%)  
Russell Midcap Index [Member]    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name   Russell Midcap Index
Average Annual Return, Percent [2],[3] 0.14%  
[1] Investment results assume all distributions are reinvested and reflect applicable fees and expenses. When applicable, results reflect fee waivers and/or expense reimbursements, without which they would have been lower.
[2] The fund began investment operations on January 14, 2025.
[3] Results assume all distributions are reinvested. Any market index shown is unmanaged, and therefore, has no expenses. Investors cannot invest directly in an index. Source(s): London Stock Exchange Group.