v3.26.1
Form N-1A Cover
Jul. 22, 2026
Prospectus [Line Items]  
Document Type 497
Amendment Flag false
Registrant Name First Trust Exchange-Traded Fund II
Entity Central Index Key 0001364608
Entity Investment Company Type N-1A
Document Period End Date Jul. 22, 2026
Prospectus Date Jul. 23, 2026