v3.25.2
Form N-1A Cover
Aug. 31, 2024
Prospectus [Line Items]  
Document Type 497
Amendment Flag false
Registrant Name FIRST TRUST EXCHANGE-TRADED FUND VIII
Entity Central Index Key 0001667919
Entity Investment Company Type N-1A
Document Period End Date Aug. 31, 2024
Prospectus Date Jun. 23, 2025