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PARTNERS' EQUITY (Tables)
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3 Months Ended |
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Mar. 31, 2014
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| Partners' Capital Notes [Abstract] |
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| Schedule of Changes in Partners' Equity |
The following table summarizes changes in the carrying amount of equity attributable to NuStar Energy L.P. partners and noncontrolling interest: | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended March 31, 2014 | | Three Months Ended March 31, 2013 | | NuStar Energy L.P. Partners’ Equity | | Noncontrolling Interest | | Total Partners’ Equity | | NuStar Energy L.P. Partners’ Equity | | Noncontrolling Interest | | Total Partners’ Equity | | (Thousands of Dollars) | Beginning balance | $ | 1,902,136 |
| | $ | 1,658 |
| | $ | 1,903,794 |
| | $ | 2,572,384 |
| | $ | 12,611 |
| | $ | 2,584,995 |
| Net income (loss) | 39,744 |
| | (107 | ) | | 39,637 |
| | 24,565 |
| | (161 | ) | | 24,404 |
| Other comprehensive income (loss): | | | | | | | | | | | | Foreign currency translation adjustment | (4,240 | ) | | (445 | ) | | (4,685 | ) | | (7,277 | ) | | (287 | ) | | (7,564 | ) | Net unrealized gain on cash flow hedges | — |
| | — |
| | — |
| | 4,687 |
| | — |
| | 4,687 |
| Net loss on cash flow hedges reclassified into interest expense, net | 2,766 |
| | — |
| | 2,766 |
| | 487 |
| | — |
| | 487 |
| Total other comprehensive loss | (1,474 | ) | | (445 | ) | | (1,919 | ) | | (2,103 | ) | | (287 | ) | | (2,390 | ) | Cash distributions to partners | (98,051 | ) | | — |
| | (98,051 | ) | | (98,051 | ) | | — |
| | (98,051 | ) | Other | 23 |
| | — |
| | 23 |
| | 222 |
| | — |
| | 222 |
| Ending balance | $ | 1,842,378 |
| | $ | 1,106 |
| | $ | 1,843,484 |
| | $ | 2,497,017 |
| | $ | 12,163 |
| | $ | 2,509,180 |
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| Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
The balance of and changes in the components included in “Accumulated other comprehensive loss” were as follows: | | | | | | | | | | | | | | Foreign Currency Translation | | Cash Flow Hedges | | Total | | (Thousands of Dollars) | Balance as of January 1, 2014 | $ | (13,658 | ) | | $ | (49,736 | ) | | $ | (63,394 | ) | Activity | (4,240 | ) | | 2,766 |
| | (1,474 | ) | Balance as of March 31, 2014 | $ | (17,898 | ) | | $ | (46,970 | ) | | $ | (64,868 | ) |
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| Schedule of Calculation of Net Income Applicable to General Partner [Text Block] |
The following table details the calculation of net income applicable to the general partner: | | | | | | | | | | Three Months Ended March 31, | | 2014 | | 2013 | | (Thousands of Dollars) | Net income attributable to NuStar Energy L.P. | $ | 39,744 |
| | $ | 24,565 |
| Less general partner incentive distribution | 10,805 |
| | 10,805 |
| Net income after general partner incentive distribution | 28,939 |
| | 13,760 |
| General partner interest | 2 | % | | 2 | % | General partner allocation of net income after general partner incentive distribution | 579 |
| | 276 |
| General partner incentive distribution | 10,805 |
| | 10,805 |
| Net income applicable to general partner | $ | 11,384 |
| | $ | 11,081 |
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| Schedule of Distributions To General and Limited Partners [Text Block] |
The following table reflects the allocation of total cash distributions to the general and limited partners applicable to the period in which the distributions were earned: | | | | | | | | | | Three Months Ended March 31, | | 2014 | | 2013 | | (Thousands of Dollars, Except Per Unit Data) | General partner interest | $ | 1,961 |
| | $ | 1,961 |
| General partner incentive distribution | 10,805 |
| | 10,805 |
| Total general partner distribution | 12,766 |
| | 12,766 |
| Limited partners’ distribution | 85,285 |
| | 85,285 |
| Total cash distributions | $ | 98,051 |
| | $ | 98,051 |
| | | | | Cash distributions per unit applicable to limited partners | $ | 1.095 |
| | $ | 1.095 |
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| Distributions Made to Limited and General Partners, by Distribution [Table Text Block] |
The following table summarizes information related to our quarterly cash distributions: | | | | | | | | | | | | | | Quarter Ended | | Cash Distributions Per Unit | | Total Cash Distributions (Thousands of Dollars) | | Record Date | | Payment Date | March 31, 2014 (a) | | $ | 1.095 |
| | $ | 98,051 |
| | May 7, 2014 | | May 12, 2014 | December 31, 2013 | | $ | 1.095 |
| | $ | 98,051 |
| | February 10, 2014 | | February 14, 2014 |
| | (a) | The distribution was announced on April 23, 2014. |
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