v3.26.3
Form N-1A Cover
Sep. 15, 2026
Prospectus [Line Items]  
Document Type 485BPOS
Amendment Flag false
Registrant Name American Century ETF Trust
Entity Central Index Key 0001710607
Entity Investment Company Type N-1A
Document Period End Date Sep. 14, 2026
Prospectus Date Sep. 15, 2026