| N-2 - $ / shares | Oct. 20, 2023 | Oct. 18, 2023 |
| Cover [Abstract] | ||
| Entity Central Index Key | 0000759828 | |
| Amendment Flag | false | |
| Document Type | 424B3 | |
| Entity Registrant Name | John Hancock Investors Trust | |
| General Description of Registrant [Abstract] | ||
| Share Price | $ 11.71 | |
| NAV Per Share | $ 13.49 | |
| Latest Premium (Discount) to NAV [Percent] | (13.20%) |
