v3.26.1
Annual Fund Operating Expenses - American Century ETF Trust - American Century Diversified Municipal Bond ETF Series - American Century Diversified Municipal Bond ETF Class
Jan. 01, 2026
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.25% [1]
Other Expenses (as a percentage of Assets): 0.00%
Expenses (as a percentage of Assets) 0.25%
[1] The management fee has been restated to reflect the decrease in the management fee schedule effective August 1, 2026.