v3.3.1.900

PARTNERS' EQUITY Narrative (Details) | 12 Months Ended
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Dec. 31, 2015 $ / shares
Distributions Made to Limited Partners and General Partner [Line Items] |
Percentage of Incentive Cash Distributions Allocated to the General Partner | 100.00%
Percent of Available Cash Distributed | 100.00%
Number of Days Within Which Distribution Is Paid | 45
Minimum Per Unit Quarterly Distribution to Limited Partners | $ 0.60
Minimum Per Unit Quarterly Distribution to Limited Partners, Annualized | $ 2.40
Quarterly Distributions Level 1 [Member] |
Distributions Made to Limited Partners and General Partner [Line Items] |
Percentage of Distribution Allocated to Limited Partners | 98.00%
Percentage of Distribution Allocated to the General Partner | 2.00%

X
- Definition Distributions Made to Limited Partners and General Partner [Line Items] + References No definition available. + Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum per unit quarterly distribution to limited partners, annualized (per the terms of the partnership agreement). + References No definition available. + Details
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Namespace Prefix: | ns_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum per unit quarterly distribution to limited partners (per the terms of the partnership agreement). + References No definition available. + Details
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Namespace Prefix: | ns_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of days within which distribution must be paid after end of quarter (per the terms of the partnership agreement). + References No definition available. + Details
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Namespace Prefix: | ns_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percent of available cash distributed to partners (per the terms of the partnership agreement). + References No definition available. + Details
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Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of the total distribution allocated to the general partner, which includes both the general partner interest and the incentive distributions. + References No definition available. + Details
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Namespace Prefix: | ns_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of the total distribution allocated to the limited partners. + References No definition available. + Details
Name: | ns_PercentageOfDistributionAllocatedToLimitedPartners
Namespace Prefix: | ns_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage of incentive cash distributions allocated to the general partner. + References No definition available. + Details
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Namespace Prefix: | ns_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |