v3.5.0.2

NET INCOME PER UNIT (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2016
Earnings Per Share [Abstract] |
Schedule of Net Income Per Unit | The following table details the calculation of earnings per unit:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
| (Thousands of Dollars, Except Unit and Per Unit Data)
Net income attributable to NuStar Energy L.P. | $ | 52,517 |  |  | $ | 54,325 |  |  | $ | 109,918 |  |  | $ | 182,224 |
Less: Distributions to general partner (including incentive distribution rights) | 12,766 |  |  | 12,766 |  |  | 25,532 |  |  | 25,532 |
Less: Distributions to limited partner | 85,285 |  |  | 85,285 |  |  | 170,570 |  |  | 170,570 |
Less: DERs to restricted units | 657 |  |  | — |  |  | 1,319 |  |  | — |
Distributions in excess of earnings | $ | (46,191 | ) |  | $ | (43,726 | ) |  | $ | (87,503 | ) |  | $ | (13,878 | )
Net income attributable to limited partner units: |  |  |  |  |  |  |
Distributions to limited partner | $ | 85,285 |  |  | $ | 85,285 |  |  | $ | 170,570 |  |  | $ | 170,570 |
Allocation of distributions in excess of earnings | (45,267 | ) |  | (42,851 | ) |  | (85,752 | ) |  | (13,600 | )
Total | $ | 40,018 |  |  | $ | 42,434 |  |  | $ | 84,818 |  |  | $ | 156,970 |
Basic weighted-average limited partner units outstanding | 77,886,219 |  |  | 77,886,078 |  |  | 77,886,148 |  |  | 77,886,078 |
Diluted units outstanding: |  |  |  |  |  |  |
Basic weighted-average limited partner units outstanding | 77,886,219 |  |  | 77,886,078 |  |  | 77,886,148 |  |  | 77,886,078 |
Effect of dilutive participating securities | 53,060 |  |  | — |  |  | 57,554 |  |  | — |
Diluted weighted-average limited partner units outstanding | 77,939,279 |  |  | 77,886,078 |  |  | 77,943,702 |  |  | 77,886,078 |
Basic and diluted net income per unit applicable to limited partners | $ | 0.52 |  |  | $ | 0.54 |  |  | $ | 1.09 |  |  | $ | 2.01 |

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
Name: | us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration