v3.25.2
John Hancock Global Climate Action Fund Investment Objectives and Goals - Class NAV [Member] - John Hancock Global Climate Action Fund
Mar. 31, 2025
Prospectus [Line Items]  
Risk/Return [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:24pt;">John Hancock Global Climate Action Fund</span>
Objective [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Investment objective</span>
Objective, Primary [Text Block] The fund seeks to provide long-term capital growth by investing in a diversified portfolio of Climate Leaders (as defined below).