v3.26.3
John Hancock High Yield Fund Expense Example - John Hancock High Yield Fund Classes A C I and R6 [Member] - John Hancock High Yield Fund
May 31, 2026
USD ($)
Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 489
Expense Example, with Redemption, 3 Years 679
Expense Example, with Redemption, 5 Years 884
Expense Example, with Redemption, 10 Years 1,475
Class C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 269
Expense Example, with Redemption, 3 Years 523
Expense Example, with Redemption, 5 Years 902
Expense Example, with Redemption, 10 Years 1,766
Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 67
Expense Example, with Redemption, 3 Years 211
Expense Example, with Redemption, 5 Years 368
Expense Example, with Redemption, 10 Years 822
Class R6  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 56
Expense Example, with Redemption, 3 Years 176
Expense Example, with Redemption, 5 Years 307
Expense Example, with Redemption, 10 Years $ 689