Investment Objectives and Goals |
Mar. 31, 2026 |
|---|---|
| Eaton Vance National Ultra-Short Municipal Income Fund | Eaton Vance National Ultra-Short Municipal Income Fund | |
| Prospectus [Line Items] | |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The Fund’s investment objective is to provide current income exempt from regular federal income tax.
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| Eaton Vance National Limited Maturity Municipal Income Fund | Eaton Vance National Limited Maturity Municipal Income Fund | |
| Prospectus [Line Items] | |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The Fund’s investment objective is to provide current income exempt from regular federal income tax.
|
| Eaton Vance Short Duration Municipal Opportunities Fund | Eaton Vance Short Duration Municipal Opportunities Fund | |
| Prospectus [Line Items] | |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The Fund’s investment objective is to seek to maximize after-tax total return.
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