Submission |
Oct. 20, 2026 |
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| Submission [Line Items] | |
| Central Index Key | 0001266585 |
| Registrant Name | Nuveen Municipal High Income Opportunity Fund |
| Registration File Number | 333-277778 |
| Form Type | N-2 |
| Submission Type | 424B5 |
| Fee Exhibit Type | EX-FILING FEES |
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- Definition The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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