v3.25.2
Form N-1A Cover
Apr. 30, 2025
Prospectus [Line Items]  
Document Type 485BPOS
Amendment Flag false
Registrant Name BLACKROCK ETF TRUST II
Entity Central Index Key 0001804196
Entity Investment Company Type N-1A
Document Period End Date Apr. 30, 2025
Prospectus Date Jul. 23, 2025