Cover	Nov. 26, 2024
Entity Information [Line Items]
Document Type	DEF 14A
Amendment Flag	false
Entity Registrant Name	Eaton Vance Limited Duration Income Fund
Entity Central Index Key	0001222922
Eaton Vance National Municipal Opportunities Trust [Member]
Entity Information [Line Items]
Document Type	DEF 14A
Amendment Flag	false
Entity Registrant Name	Eaton Vance National Municipal Opportunities Trust
Entity Central Index Key	0001454741

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

No definition available.

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- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

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Namespace Prefix:	dei_
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- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2

+ Details

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- Details

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