v3.26.1
Performance Management - John Hancock Large Cap Opportunities ETF
Jun. 26, 2026
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Past performance</span>
Performance Narrative [Text Block] This section normally shows how the fund’s total returns have varied from year to year, along with a broad-based securities market index for reference. Because the fund had not commenced operations as of the date of this prospectus, there is no past performance to report.
Performance One Year or Less [Text] <span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">Because the fund had not commenced operations as of the date of this prospectus, there is no past performance to report.</span>