John Hancock High Yield Fund Annual Total Returns |
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| John Hancock High Yield Fund Classes A C I and R6 [Member] | John Hancock High Yield Fund | Class A | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 7.18% | 6.49% | 12.48% | (11.74%) | 5.12% | 4.52% | 13.40% | (3.41%) | 6.79% | 14.84% |