v3.26.1
Expense Example - American Century ETF Trust
Jan. 01, 2026
USD ($)
American Century Core Plus Income ETF | American Century Core Plus Income ETF Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 33
Expense Example, with Redemption, 3 Years 103
Expense Example, with Redemption, 5 Years 180
Expense Example, with Redemption, 10 Years 406
American Century Ultrashort Income ETF | American Century Ultrashort Income ETF Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 19
Expense Example, with Redemption, 3 Years 61
Expense Example, with Redemption, 5 Years 107
Expense Example, with Redemption, 10 Years $ 243