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RELATED PARTY TRANSACTIONS Narrative (Details) (USD $)
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9 Months Ended | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Sep. 30, 2014
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Dec. 31, 2013
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Sep. 30, 2014
Axeon [Member]
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Feb. 26, 2014
Axeon [Member]
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Sep. 30, 2014
Axeon [Member]
Financial Guarantee [Member]
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Sep. 30, 2014
Axeon [Member]
Financial Standby Letter of Credit [Member]
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Feb. 29, 2016
Axeon [Member]
Scenario, Forecast [Member]
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Sep. 30, 2015
Axeon [Member]
Scenario, Forecast [Member]
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Dec. 31, 2014
Axeon [Member]
Scenario, Forecast [Member]
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Sep. 30, 2014
NuStar GP LLC [Member]
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Dec. 31, 2013
NuStar GP LLC [Member]
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Dec. 31, 2013
Axeon [Member]
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Sep. 30, 2014
NuStar GP LLC and Axeon [Member]
Services Agreement Between General Partner and Other Related Parties [Member]
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| Related Party Transaction [Line Items] | |||||||||||||
| Payable to related party | $ 14,119,000 | $ 8,325,000 | $ 14,100,000 | $ 8,300,000 | |||||||||
| Long-term payable to related party | 30,489,000 | 41,139,000 | 30,500,000 | 41,100,000 | |||||||||
| Term Loan Receivable | 190,000,000 | 190,000,000 | |||||||||||
| Term Loan Receivable Face Amount Step Down 1 | 175,000,000 | ||||||||||||
| Term Loan Receivable Face Amount Step Down 2 | 150,000,000 | ||||||||||||
| Maximum Amount Guarantees | 150,000,000 | ||||||||||||
| Reduction in Credit Support | 25,000,000 | ||||||||||||
| Amount of Guarantees Provided | 73,300,000 | 61,900,000 | |||||||||||
| Number of Guarantees with Unlimited Exposure | 2 | ||||||||||||
| Receivable from related parties | $ 45,000 | $ 51,084,000 | $ 50,700,000 | ||||||||||
| Administrative Fees, Description | which provided that NuStar GP, LLC furnish certain administrative and other operating services necessary to conduct the business of Axeon for an annual fee totaling $10.0 million, subject to adjustment | ||||||||||||
| Administrative Agreement Maturity Date | Jun. 30, 2014 | ||||||||||||