v3.26.1
Expense Example - American Century ETF Trust - American Century Multisector Floating Income ETF Series - American Century Multisector Floating Income ETF Class
Jan. 01, 2026
USD ($)
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