v3.25.4
First Trust RBA American Industrial Renaissance ETF N-1A Cover
Sep. 30, 2025
Prospectus [Line Items]  
Document Type 485BPOS
Amendment Flag false
Registrant Name First Trust Exchange-Traded Fund VI
Entity Central Index Key 0001552740
Entity Investment Company Type N-1A
Document Period End Date Sep. 30, 2025
Prospectus Date Feb. 02, 2026