v3.26.3
John Hancock Bond Fund Expense Example, No Redemption - John Hancock Bond Fund Classes A C I R2 R4 and R6 [Member] - John Hancock Bond Fund - Class C
May 31, 2026
USD ($)
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year $ 148
Expense Example, No Redemption, 3 Years 461
Expense Example, No Redemption, 5 Years 796
Expense Example, No Redemption, 10 Years $ 1,555