v3.26.1
John Hancock U.S. High Dividend ETF N-1A Cover
Mar. 31, 2026
Prospectus [Line Items]  
Document Type 485BPOS
Amendment Flag false
Registrant Name John Hancock Exchange-Traded Fund Trust
Entity Central Index Key 0001478482
Entity Investment Company Type N-1A
Document Period End Date Mar. 31, 2026
Prospectus Date Aug. 01, 2026