Name:	nmm_DistributionPerUnit
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Description of the distribution amount per unit for all classes of units.

No definition available.

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Data Type:	dtr-types:textBlockItemType
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The percentage allocations of the additional available cash from operating surplus among the unitholders, General Partner and the holders of the incentive distribution rights.

No definition available.

Name:	nmm_PercentageAllocationsOfAdditionalAvailableCashAmongUnitholders
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Data Type:	dtr-types:percentItemType
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Period Type:	duration

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482662/260-10-50-1

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Number of capital units or capital shares outstanding. This element is relevant to issuers of face-amount certificates and registered investment companies.

No definition available.

Name:	us-gaap_CapitalUnitsOutstanding
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Data Type:	xbrli:sharesItemType
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Period Type:	instant

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.

No definition available.

Name:	us-gaap_DistributionMadeToLimitedLiabilityCompanyLLCMemberLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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