v2.4.0.8

ORGANIZATION AND OPERATIONS (Details) | 12 Months Ended
--- | ---
Dec. 31, 2013
Organization And Operations [Line Items] |
Total ownership interest held by general partner | 0.149
Storage capacity (in barrels) | 84,800,000
Refined product pipeline miles | 5,463
Number of Refined Product Pipelines terminals | 21
Refined Product Pipelines terminals storage capacity (in barrels) | 4,900,000
East Pipeline Tank Farms | 2
East Pipeline Storage Capacity (in barrels) | 1,400,000
Ammonia Pipeline miles | 2,000
Crude Oil Pipelines miles | 1,180
Crude Oil Pipelines tanks storage capacity (in barrels) | 3,400,000
Sale of Asphalt Operations [Member] |
Organization And Operations [Line Items] |
Disposal Date | Sep. 28, 2012
Percent Voting Interest Sold | 50.00%

X
- Definition Ammonia Pipeline Miles + References No definition available. + Details
Name: | ns_AmmoniaPipelineMiles
Namespace Prefix: | ns_
Data Type: | num:lengthItemType
Balance Type: | na
Period Type: | instant

X
- Definition Crude Oil Pipeline Miles + References No definition available. + Details
Name: | ns_CrudeOilPipelineMiles
Namespace Prefix: | ns_
Data Type: | num:lengthItemType
Balance Type: | na
Period Type: | instant

X
- Definition Crude Oil Pipelines Tanks Storage Capacity, in barrels + References No definition available. + Details
Name: | ns_CrudeOilPipelinesTanksStorageCapacity
Namespace Prefix: | ns_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

X
- Definition East Pipeline Storage Capacity + References No definition available. + Details
Name: | ns_EastPipelineStorageCapacity
Namespace Prefix: | ns_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of tank farms along East Pipeline + References No definition available. + Details
Name: | ns_EastPipelineTankFarms
Namespace Prefix: | ns_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The percentage investment held by the general partner of the limited partnership. + References No definition available. + Details
Name: | ns_LimitedPartnershipGeneralPartnerOwnershipInterest
Namespace Prefix: | ns_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ns_OrganizationalStructureAndOperationsLineItems
Namespace Prefix: | ns_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percent voting interest sold and owned by each party subsequent to the sale. + References No definition available. + Details
Name: | ns_PercentVotingInterestSold
Namespace Prefix: | ns_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Refined product pipeline miles + References No definition available. + Details
Name: | ns_RefinedProductPipelineMiles
Namespace Prefix: | ns_
Data Type: | num:lengthItemType
Balance Type: | na
Period Type: | instant

X
- Definition Refined Product Pipelines Terminals Storage Capacity, in barrels + References No definition available. + Details
Name: | ns_RefinedProductPipelinesTerminalsStorageCapacity
Namespace Prefix: | ns_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Refined Product Pipeline Terminals + References No definition available. + Details
Name: | ns_RefinedProductPipelineTerminals
Namespace Prefix: | ns_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Storage capacity classified in the storage segment, in barrels. + References No definition available. + Details
Name: | ns_StorageCapacity
Namespace Prefix: | ns_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

X
- Definition Date the entity disposed of a business or a group of assets, in CCYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_DisposalDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration