DISTRIBUTIONS FROM NUSTAR ENERGY Narrative 1 (Details) (USD $)	12 Months Ended
Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]
Minimum NuStar Energy quarterly distribution required for incentive distribution entitlement	$ 0.60
Maximum percentage of cash distributed by NuStar Energy	23.00%
NuStar Energy quarterly distribution required for maximum incentive distribution entitlement	$ 0.66
General partner interest percentage	2.00%

Amount by which the equity method investee's quarterly distribution must exceed in order for incentive distribution entitlement.

No definition available.

+ Details

Name:	nsh_IncentiveDistributionRightsEntitlement
Namespace Prefix:	nsh_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount by which the equity method investee's quarterly distribution must exceed in order for maximum incentive distribution entitlement.

+ References

No definition available.

+ Details

Name:	nsh_IncentiveDistributionRightsEntitlementMaximum
Namespace Prefix:	nsh_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum allowable percentage of cash distributed by equity method investee related to incentive distribution rights.

+ References

No definition available.

+ Details

Name:	nsh_IncentiveDistributionRightsPercentageMaximumAllowable
Namespace Prefix:	nsh_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 272

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

+ Details

Name:	us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration