| N-2 | 12 Months Ended |
| Sep. 30, 2022 | |
| Cover [Abstract] | |
| Entity Central Index Key | 0001635977 |
| Amendment Flag | true |
| Amendment Description | Explanatory Note The Registrant is filing this amendment to its Form N-CSR for the period ended September 30, 2022, originally filed with the Securities and Exchange Commission on December 8, 2022 (Accession Number 0001104659-22-125461), for the purpose of including Items 4(i) and 4(j) on page 4; updating Item 11(b) on page 5 to reference the entire period covered by the report; and updating the certifications in Exhibits 1 and 2 of Item 13 to address the entire period covered by the report. Items 1 through 3, Items 5 through 10 and Items 12 through 13 (excluding Items 13(a)(2) and 13(b)) to the Amendment are incorporated by reference from the Original Filing. |
| Document Type | N-CSR/A |
| Entity Registrant Name | Tekla World Healthcare Fund |
