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 Bond Trust Class NAV [Member] | John Hancock High Yield Fund | Class NAV | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 7.92% | 6.88% | 12.52% | (11.16%) | 5.20% | 4.91% | 13.81% | (2.80%) | 7.19% | 15.33% |