SEGMENT INFORMATION (Tables)
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12 Months Ended |
Dec. 31, 2015 |
| Segment Reporting [Abstract] |
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| Schedule of Segment Reporting Information, by Segment [Text Block] |
Results of operations for the reportable segments were as follows: | | | | | | | | | | | | | | Year Ended December 31, | | 2015 | | 2014 | | 2013 | | (Thousands of Dollars) | Revenues: | | | | | | Pipeline: | | | | | | Third parties | $ | 508,522 |
| | $ | 477,030 |
| | $ | 411,529 |
| Storage: | | | | | | Third parties | 599,302 |
| | 537,142 |
| | 518,253 |
| Intersegment | 25,606 |
| | 26,435 |
| | 32,044 |
| Related party | — |
| | 929 |
| | 6,252 |
| Total storage | 624,908 |
| | 564,506 |
| | 556,549 |
| Fuels marketing: | | | | | | Third parties | 976,216 |
| | 2,060,017 |
| | 2,519,053 |
| Related party | — |
| | — |
| | 8,645 |
| Total fuels marketing | 976,216 |
| | 2,060,017 |
| | 2,527,698 |
| Consolidation and intersegment eliminations | (25,606 | ) | | (26,435 | ) | | (32,044 | ) | Total revenues | $ | 2,084,040 |
| | $ | 3,075,118 |
| | $ | 3,463,732 |
| | | | | | | Depreciation and amortization expense: | | | | | | Pipeline | $ | 84,951 |
| | $ | 77,691 |
| | $ | 68,871 |
| Storage | 116,768 |
| | 103,848 |
| | 99,868 |
| Fuels marketing | — |
| | 16 |
| | 27 |
| Total segment depreciation and amortization expense | 201,719 |
| | 181,555 |
| | 168,766 |
| Other depreciation and amortization expense | 8,491 |
| | 10,153 |
| | 10,155 |
| Total depreciation and amortization expense | $ | 210,210 |
| | $ | 191,708 |
| | $ | 178,921 |
| | | | | | | Operating income (loss): | | | | | | Pipeline | $ | 270,349 |
| | $ | 245,233 |
| | $ | 208,293 |
| Storage | 217,818 |
| | 183,104 |
| | (127,484 | ) | Fuels marketing | 13,507 |
| | 24,805 |
| | (126 | ) | Consolidation and intersegment eliminations | 42 |
| | (32 | ) | | 1,437 |
| Total segment operating income | 501,716 |
| | 453,110 |
| | 82,120 |
| Less general and administrative expenses | 102,521 |
| | 96,056 |
| | 91,086 |
| Less other depreciation and amortization expense | 8,491 |
| | 10,153 |
| | 10,155 |
| Total operating income (loss) | $ | 390,704 |
| | $ | 346,901 |
| | $ | (19,121 | ) |
|
| Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] |
Revenues by geographic area are shown in the table below. | | | | | | | | | | | | | | Year Ended December 31, | | 2015 | | 2014 | | 2013 | | (Thousands of Dollars) | United States | $ | 1,599,088 |
| | $ | 2,276,609 |
| | $ | 2,340,694 |
| Netherlands | 386,282 |
| | 705,207 |
| | 1,027,260 |
| Other | 98,670 |
| | 93,302 |
| | 95,778 |
| Consolidated revenues | $ | 2,084,040 |
| | $ | 3,075,118 |
| | $ | 3,463,732 |
|
|
| Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block] |
Total amounts of property, plant and equipment, net by geographic area were as follows: | | | | | | | | | | December 31, | | 2015 | | 2014 | | (Thousands of Dollars) | United States | $ | 3,049,334 |
| | $ | 2,809,462 |
| Netherlands | 449,406 |
| | 451,564 |
| Other | 184,831 |
| | 199,706 |
| Consolidated long-lived assets | $ | 3,683,571 |
| | $ | 3,460,732 |
|
|
| Schedule of Segment Reporting Information Assets By Segment [Text Block] |
Total assets by reportable segment were as follows: | | | | | | | | | | December 31, | | 2015 | | 2014 | | (Thousands of Dollars) | Pipeline | $ | 2,051,866 |
| | $ | 1,962,821 |
| Storage | 2,438,621 |
| | 2,241,573 |
| Fuels marketing | 156,866 |
| | 227,642 |
| Total segment assets | 4,647,353 |
| | 4,432,036 |
| Other partnership assets | 501,909 |
| | 486,760 |
| Total consolidated assets | $ | 5,149,262 |
| | $ | 4,918,796 |
|
|
| Schedule of Capital Expenditures, by Segment [Table Text Block] |
Capital expenditures, including acquisitions and investments in other noncurrent assets, by reportable segment were as follows: | | | | | | | | | | | | | | Year Ended December 31, | | 2015 | | 2014 | | 2013 | | (Thousands of Dollars) | Pipeline | $ | 175,657 |
| | $ | 244,713 |
| | $ | 165,096 |
| Storage | 285,258 |
| | 108,457 |
| | 170,637 |
| Fuels marketing | — |
| | — |
| | 69 |
| Other partnership assets | 9,957 |
| | 3,795 |
| | 7,518 |
| Total capital expenditures | $ | 470,872 |
| | $ | 356,965 |
| | $ | 343,320 |
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