CONDENSED CONSOLIDATING FINANCIAL STATEMENTS Table 1 - Condensed Consolidating Balance Sheets (Details) - USD ($) $ in Thousands |
Sep. 30, 2018 |
Jun. 30, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Dec. 31, 2016 |
| Assets |
|
|
|
|
|
| Cash and cash equivalents |
$ 24,579
|
|
$ 24,292
|
$ 33,615
|
$ 35,942
|
| Receivables, net |
164,768
|
|
176,775
|
|
|
| Inventories |
24,761
|
|
26,857
|
|
|
| Other current assets |
62,766
|
|
22,508
|
|
|
| Intercompany receivable |
0
|
|
0
|
|
|
| Total current assets |
276,874
|
|
250,432
|
|
|
| Property, plant and equipment, net |
4,484,848
|
|
4,300,933
|
|
|
| Intangible assets, net |
745,912
|
|
784,479
|
|
|
| Goodwill |
1,094,661
|
|
1,097,475
|
|
|
| Investment in wholly owned subsidiaries |
0
|
|
0
|
|
|
| Deferred income tax asset |
0
|
|
233
|
|
|
| Other long-term assets, net |
118,663
|
|
101,681
|
|
|
| Total assets |
6,720,958
|
|
6,535,233
|
|
|
| Liabilities, Mezzanine Equity and Partners’ Equity |
|
|
|
|
|
| Accounts payable |
154,212
|
|
145,932
|
|
|
| Short-term debt |
10,500
|
|
35,000
|
|
|
| Current portion of long-term debt |
0
|
|
349,990
|
|
|
| Accrued interest payable |
30,845
|
|
40,449
|
|
|
| Accrued liabilities |
97,298
|
|
61,578
|
|
|
| Taxes other than income tax |
19,695
|
|
14,385
|
|
|
| Income tax payable |
4,576
|
|
4,172
|
|
|
| Intercompany payable |
0
|
|
0
|
|
|
| Total current liabilities |
317,126
|
|
651,506
|
|
|
| Long-term debt, less current portion |
3,376,852
|
|
3,263,069
|
|
|
| Deferred income tax liability |
23,343
|
|
22,272
|
|
|
| Other long-term liabilities |
96,911
|
|
118,297
|
|
|
| Series D preferred units |
559,844
|
$ 370,711
|
0
|
|
|
| Total partners' equity |
2,346,882
|
|
2,480,089
|
|
|
| Total liabilities, mezzanine equity and partners’ equity |
6,720,958
|
|
6,535,233
|
|
|
| Eliminations [Member] |
|
|
|
|
|
| Assets |
|
|
|
|
|
| Cash and cash equivalents |
0
|
|
0
|
0
|
0
|
| Receivables, net |
0
|
|
0
|
|
|
| Inventories |
0
|
|
0
|
|
|
| Other current assets |
0
|
|
0
|
|
|
| Intercompany receivable |
(2,914,432)
|
|
(3,112,164)
|
|
|
| Total current assets |
(2,914,432)
|
|
(3,112,164)
|
|
|
| Property, plant and equipment, net |
0
|
|
0
|
|
|
| Intangible assets, net |
0
|
|
0
|
|
|
| Goodwill |
0
|
|
0
|
|
|
| Investment in wholly owned subsidiaries |
(5,124,172)
|
|
(5,008,132)
|
|
|
| Deferred income tax asset |
|
|
0
|
|
|
| Other long-term assets, net |
0
|
|
0
|
|
|
| Total assets |
(8,038,604)
|
|
(8,120,296)
|
|
|
| Liabilities, Mezzanine Equity and Partners’ Equity |
|
|
|
|
|
| Accounts payable |
0
|
|
0
|
|
|
| Short-term debt |
0
|
|
0
|
|
|
| Current portion of long-term debt |
|
|
0
|
|
|
| Accrued interest payable |
0
|
|
0
|
|
|
| Accrued liabilities |
0
|
|
0
|
|
|
| Taxes other than income tax |
0
|
|
0
|
|
|
| Income tax payable |
0
|
|
0
|
|
|
| Intercompany payable |
(2,914,432)
|
|
(3,112,164)
|
|
|
| Total current liabilities |
(2,914,432)
|
|
(3,112,164)
|
|
|
| Long-term debt, less current portion |
0
|
|
0
|
|
|
| Deferred income tax liability |
0
|
|
0
|
|
|
| Other long-term liabilities |
0
|
|
0
|
|
|
| Series D preferred units |
0
|
|
|
|
|
| Total partners' equity |
(5,124,172)
|
|
(5,008,132)
|
|
|
| Total liabilities, mezzanine equity and partners’ equity |
(8,038,604)
|
|
(8,120,296)
|
|
|
| Parent Company Guarantor [Member] | NuStar Energy | Reportable Legal Entities [Member] |
|
|
|
|
|
| Assets |
|
|
|
|
|
| Cash and cash equivalents |
1,164
|
|
885
|
894
|
870
|
| Receivables, net |
0
|
|
0
|
|
|
| Inventories |
0
|
|
0
|
|
|
| Other current assets |
122
|
|
61
|
|
|
| Intercompany receivable |
187,967
|
|
0
|
|
|
| Total current assets |
189,253
|
|
946
|
|
|
| Property, plant and equipment, net |
0
|
|
0
|
|
|
| Intangible assets, net |
0
|
|
0
|
|
|
| Goodwill |
0
|
|
0
|
|
|
| Investment in wholly owned subsidiaries |
2,793,521
|
|
2,891,371
|
|
|
| Deferred income tax asset |
|
|
0
|
|
|
| Other long-term assets, net |
303
|
|
303
|
|
|
| Total assets |
2,983,077
|
|
2,892,620
|
|
|
| Liabilities, Mezzanine Equity and Partners’ Equity |
|
|
|
|
|
| Accounts payable |
13,636
|
|
4,078
|
|
|
| Short-term debt |
0
|
|
0
|
|
|
| Current portion of long-term debt |
|
|
0
|
|
|
| Accrued interest payable |
0
|
|
0
|
|
|
| Accrued liabilities |
929
|
|
1,105
|
|
|
| Taxes other than income tax |
63
|
|
125
|
|
|
| Income tax payable |
0
|
|
0
|
|
|
| Intercompany payable |
0
|
|
322,296
|
|
|
| Total current liabilities |
14,628
|
|
327,604
|
|
|
| Long-term debt, less current portion |
0
|
|
0
|
|
|
| Deferred income tax liability |
0
|
|
0
|
|
|
| Other long-term liabilities |
0
|
|
0
|
|
|
| Series D preferred units |
559,844
|
|
|
|
|
| Total partners' equity |
2,408,605
|
|
2,565,016
|
|
|
| Total liabilities, mezzanine equity and partners’ equity |
2,983,077
|
|
2,892,620
|
|
|
| Subsidiary Issuer [Member] | NuStar Logistics | Reportable Legal Entities [Member] |
|
|
|
|
|
| Assets |
|
|
|
|
|
| Cash and cash equivalents |
4,238
|
|
29
|
28
|
5
|
| Receivables, net |
82
|
|
280
|
|
|
| Inventories |
1,875
|
|
1,686
|
|
|
| Other current assets |
16,961
|
|
11,412
|
|
|
| Intercompany receivable |
2,726,465
|
|
3,112,164
|
|
|
| Total current assets |
2,749,621
|
|
3,125,571
|
|
|
| Property, plant and equipment, net |
1,846,330
|
|
1,893,720
|
|
|
| Intangible assets, net |
51,463
|
|
58,530
|
|
|
| Goodwill |
149,453
|
|
149,453
|
|
|
| Investment in wholly owned subsidiaries |
29,961
|
|
24,162
|
|
|
| Deferred income tax asset |
|
|
0
|
|
|
| Other long-term assets, net |
77,144
|
|
65,684
|
|
|
| Total assets |
4,903,972
|
|
5,317,120
|
|
|
| Liabilities, Mezzanine Equity and Partners’ Equity |
|
|
|
|
|
| Accounts payable |
26,423
|
|
27,642
|
|
|
| Short-term debt |
10,500
|
|
35,000
|
|
|
| Current portion of long-term debt |
|
|
349,990
|
|
|
| Accrued interest payable |
30,785
|
|
40,402
|
|
|
| Accrued liabilities |
16,608
|
|
17,628
|
|
|
| Taxes other than income tax |
7,152
|
|
7,110
|
|
|
| Income tax payable |
364
|
|
732
|
|
|
| Intercompany payable |
0
|
|
0
|
|
|
| Total current liabilities |
91,832
|
|
478,504
|
|
|
| Long-term debt, less current portion |
3,313,528
|
|
3,201,220
|
|
|
| Deferred income tax liability |
1,262
|
|
1,262
|
|
|
| Other long-term liabilities |
45,099
|
|
58,806
|
|
|
| Series D preferred units |
0
|
|
|
|
|
| Total partners' equity |
1,452,251
|
|
1,577,328
|
|
|
| Total liabilities, mezzanine equity and partners’ equity |
4,903,972
|
|
5,317,120
|
|
|
| Guarantor Subsidiaries [Member] | NuPOP | Reportable Legal Entities [Member] |
|
|
|
|
|
| Assets |
|
|
|
|
|
| Cash and cash equivalents |
0
|
|
0
|
0
|
0
|
| Receivables, net |
0
|
|
0
|
|
|
| Inventories |
6,822
|
|
8,611
|
|
|
| Other current assets |
1,284
|
|
4,191
|
|
|
| Intercompany receivable |
0
|
|
0
|
|
|
| Total current assets |
8,106
|
|
12,802
|
|
|
| Property, plant and equipment, net |
619,284
|
|
591,070
|
|
|
| Intangible assets, net |
0
|
|
0
|
|
|
| Goodwill |
170,652
|
|
170,652
|
|
|
| Investment in wholly owned subsidiaries |
1,450,865
|
|
1,301,717
|
|
|
| Deferred income tax asset |
|
|
0
|
|
|
| Other long-term assets, net |
26,861
|
|
27,493
|
|
|
| Total assets |
2,275,768
|
|
2,103,734
|
|
|
| Liabilities, Mezzanine Equity and Partners’ Equity |
|
|
|
|
|
| Accounts payable |
5,935
|
|
13,160
|
|
|
| Short-term debt |
0
|
|
0
|
|
|
| Current portion of long-term debt |
|
|
0
|
|
|
| Accrued interest payable |
0
|
|
0
|
|
|
| Accrued liabilities |
7,971
|
|
9,450
|
|
|
| Taxes other than income tax |
5,893
|
|
3,794
|
|
|
| Income tax payable |
0
|
|
4
|
|
|
| Intercompany payable |
1,393,208
|
|
1,277,691
|
|
|
| Total current liabilities |
1,413,007
|
|
1,304,099
|
|
|
| Long-term debt, less current portion |
0
|
|
0
|
|
|
| Deferred income tax liability |
12
|
|
12
|
|
|
| Other long-term liabilities |
13,124
|
|
8,861
|
|
|
| Series D preferred units |
0
|
|
|
|
|
| Total partners' equity |
849,625
|
|
790,762
|
|
|
| Total liabilities, mezzanine equity and partners’ equity |
2,275,768
|
|
2,103,734
|
|
|
| Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member] |
|
|
|
|
|
| Assets |
|
|
|
|
|
| Cash and cash equivalents |
19,177
|
|
23,378
|
$ 32,693
|
$ 35,067
|
| Receivables, net |
164,686
|
|
176,495
|
|
|
| Inventories |
16,064
|
|
16,560
|
|
|
| Other current assets |
44,399
|
|
6,844
|
|
|
| Intercompany receivable |
0
|
|
0
|
|
|
| Total current assets |
244,326
|
|
223,277
|
|
|
| Property, plant and equipment, net |
2,019,234
|
|
1,816,143
|
|
|
| Intangible assets, net |
694,449
|
|
725,949
|
|
|
| Goodwill |
774,556
|
|
777,370
|
|
|
| Investment in wholly owned subsidiaries |
849,825
|
|
790,882
|
|
|
| Deferred income tax asset |
|
|
233
|
|
|
| Other long-term assets, net |
14,355
|
|
8,201
|
|
|
| Total assets |
4,596,745
|
|
4,342,055
|
|
|
| Liabilities, Mezzanine Equity and Partners’ Equity |
|
|
|
|
|
| Accounts payable |
108,218
|
|
101,052
|
|
|
| Short-term debt |
0
|
|
0
|
|
|
| Current portion of long-term debt |
|
|
0
|
|
|
| Accrued interest payable |
60
|
|
47
|
|
|
| Accrued liabilities |
71,790
|
|
33,395
|
|
|
| Taxes other than income tax |
6,587
|
|
3,356
|
|
|
| Income tax payable |
4,212
|
|
3,436
|
|
|
| Intercompany payable |
1,521,224
|
|
1,512,177
|
|
|
| Total current liabilities |
1,712,091
|
|
1,653,463
|
|
|
| Long-term debt, less current portion |
63,324
|
|
61,849
|
|
|
| Deferred income tax liability |
22,069
|
|
20,998
|
|
|
| Other long-term liabilities |
38,688
|
|
50,630
|
|
|
| Series D preferred units |
0
|
|
|
|
|
| Total partners' equity |
2,760,573
|
|
2,555,115
|
|
|
| Total liabilities, mezzanine equity and partners’ equity |
$ 4,596,745
|
|
$ 4,342,055
|
|
|