CONDENSED CONSOLIDATING FINANCIAL STATEMENTS Table 1 - Condensed Consolidating Balance Sheets (Details) - USD ($) $ in Thousands |
Sep. 30, 2020 |
Jun. 30, 2020 |
Dec. 31, 2019 |
Sep. 30, 2019 |
Jun. 30, 2019 |
Dec. 31, 2018 |
| Assets |
|
|
|
|
|
|
| Cash and cash equivalents |
$ 55,494
|
|
$ 16,192
|
|
|
|
| Receivables, net |
116,733
|
|
152,530
|
|
|
|
| Inventories |
10,017
|
|
12,393
|
|
|
|
| Prepaid and other current assets |
33,316
|
|
21,933
|
|
|
|
| Intercompany receivable |
0
|
|
0
|
|
|
|
| Total current assets |
215,560
|
|
203,048
|
|
|
|
| Property, plant and equipment, net |
4,073,510
|
|
4,118,979
|
|
|
|
| Intangible assets, net |
643,064
|
|
681,632
|
|
|
|
| Goodwill |
780,853
|
|
1,005,853
|
|
|
|
| Investment in wholly owned subsidiaries |
0
|
|
0
|
|
|
|
| Other long-term assets, net |
149,319
|
|
176,480
|
|
|
|
| Total assets |
5,862,306
|
|
6,185,992
|
|
|
|
| Liabilities, Mezzanine Equity and Partners’ Equity |
|
|
|
|
|
|
| Accounts payable |
68,874
|
|
109,834
|
|
|
|
| Short-term debt and current portion of finance leases |
4,188
|
|
10,046
|
|
|
|
| Current portion of long-term debt |
0
|
|
452,367
|
|
|
|
| Accrued interest payable |
44,753
|
|
37,925
|
|
|
|
| Accrued liabilities |
68,701
|
|
108,610
|
|
|
|
| Taxes other than income tax |
18,135
|
|
12,781
|
|
|
|
| Intercompany payable |
0
|
|
0
|
|
|
|
| Total current liabilities |
204,651
|
|
731,563
|
|
|
|
| Long-term debt, less current portion |
3,597,824
|
|
2,934,918
|
|
|
|
| Deferred income tax liability |
12,013
|
|
12,427
|
|
|
|
| Other long-term liabilities |
160,108
|
|
148,939
|
|
|
|
| Series D preferred units |
595,649
|
$ 591,895
|
581,935
|
$ 577,191
|
$ 572,597
|
$ 563,992
|
| Total partners' equity |
1,292,061
|
$ 1,462,964
|
1,776,210
|
$ 1,769,726
|
$ 1,829,303
|
$ 2,257,731
|
| Total liabilities, mezzanine equity and partners’ equity |
5,862,306
|
|
6,185,992
|
|
|
|
| Eliminations [Member] |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Cash and cash equivalents |
0
|
|
0
|
|
|
|
| Receivables, net |
(4,853)
|
|
0
|
|
|
|
| Inventories |
0
|
|
0
|
|
|
|
| Prepaid and other current assets |
0
|
|
0
|
|
|
|
| Intercompany receivable |
(1,681,103)
|
|
(1,887,137)
|
|
|
|
| Total current assets |
(1,685,956)
|
|
(1,887,137)
|
|
|
|
| Property, plant and equipment, net |
0
|
|
0
|
|
|
|
| Intangible assets, net |
0
|
|
0
|
|
|
|
| Goodwill |
0
|
|
0
|
|
|
|
| Investment in wholly owned subsidiaries |
(5,514,050)
|
|
(6,261,287)
|
|
|
|
| Other long-term assets, net |
0
|
|
0
|
|
|
|
| Total assets |
(7,200,006)
|
|
(8,148,424)
|
|
|
|
| Liabilities, Mezzanine Equity and Partners’ Equity |
|
|
|
|
|
|
| Accounts payable |
0
|
|
0
|
|
|
|
| Short-term debt and current portion of finance leases |
0
|
|
0
|
|
|
|
| Current portion of long-term debt |
|
|
0
|
|
|
|
| Accrued interest payable |
0
|
|
0
|
|
|
|
| Accrued liabilities |
0
|
|
0
|
|
|
|
| Taxes other than income tax |
(4,853)
|
|
0
|
|
|
|
| Intercompany payable |
(1,681,103)
|
|
(1,887,137)
|
|
|
|
| Total current liabilities |
(1,685,956)
|
|
(1,887,137)
|
|
|
|
| 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
|
|
0
|
|
|
|
| Total partners' equity |
(5,514,050)
|
|
(6,261,287)
|
|
|
|
| Total liabilities, mezzanine equity and partners’ equity |
(7,200,006)
|
|
(8,148,424)
|
|
|
|
| Parent Company Guarantor [Member] | NuStar Energy | Reportable Legal Entities [Member] |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Cash and cash equivalents |
278
|
|
176
|
|
|
|
| Receivables, net |
0
|
|
0
|
|
|
|
| Inventories |
0
|
|
0
|
|
|
|
| Prepaid and other current assets |
136
|
|
61
|
|
|
|
| Intercompany receivable |
0
|
|
0
|
|
|
|
| Total current assets |
414
|
|
237
|
|
|
|
| Property, plant and equipment, net |
0
|
|
0
|
|
|
|
| Intangible assets, net |
0
|
|
0
|
|
|
|
| Goodwill |
0
|
|
0
|
|
|
|
| Investment in wholly owned subsidiaries |
2,413,335
|
|
2,871,540
|
|
|
|
| Other long-term assets, net |
51
|
|
98
|
|
|
|
| Total assets |
2,413,800
|
|
2,871,875
|
|
|
|
| Liabilities, Mezzanine Equity and Partners’ Equity |
|
|
|
|
|
|
| Accounts payable |
5,687
|
|
5,427
|
|
|
|
| Short-term debt and current portion of finance leases |
0
|
|
0
|
|
|
|
| Current portion of long-term debt |
|
|
0
|
|
|
|
| Accrued interest payable |
0
|
|
0
|
|
|
|
| Accrued liabilities |
916
|
|
1,425
|
|
|
|
| Taxes other than income tax |
63
|
|
125
|
|
|
|
| Intercompany payable |
420,633
|
|
438,857
|
|
|
|
| Total current liabilities |
427,299
|
|
445,834
|
|
|
|
| Long-term debt, less current portion |
0
|
|
0
|
|
|
|
| Deferred income tax liability |
0
|
|
0
|
|
|
|
| Other long-term liabilities |
0
|
|
0
|
|
|
|
| Series D preferred units |
595,649
|
|
581,935
|
|
|
|
| Total partners' equity |
1,390,852
|
|
1,844,106
|
|
|
|
| Total liabilities, mezzanine equity and partners’ equity |
2,413,800
|
|
2,871,875
|
|
|
|
| Subsidiary Issuer [Member] | NuStar Logistics | Reportable Legal Entities [Member] |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Cash and cash equivalents |
35,503
|
|
24
|
|
|
|
| Receivables, net |
77
|
|
317
|
|
|
|
| Inventories |
2,013
|
|
1,953
|
|
|
|
| Prepaid and other current assets |
25,258
|
|
16,325
|
|
|
|
| Intercompany receivable |
1,219,683
|
|
1,276,839
|
|
|
|
| Total current assets |
1,282,534
|
|
1,295,458
|
|
|
|
| Property, plant and equipment, net |
2,013,927
|
|
2,058,530
|
|
|
|
| Intangible assets, net |
32,616
|
|
39,683
|
|
|
|
| Goodwill |
50,453
|
|
149,453
|
|
|
|
| Investment in wholly owned subsidiaries |
1,658,489
|
|
1,743,066
|
|
|
|
| Other long-term assets, net |
66,316
|
|
111,362
|
|
|
|
| Total assets |
5,104,335
|
|
5,397,552
|
|
|
|
| Liabilities, Mezzanine Equity and Partners’ Equity |
|
|
|
|
|
|
| Accounts payable |
21,286
|
|
42,064
|
|
|
|
| Short-term debt and current portion of finance leases |
3,584
|
|
9,722
|
|
|
|
| Current portion of long-term debt |
|
|
452,367
|
|
|
|
| Accrued interest payable |
44,721
|
|
37,888
|
|
|
|
| Accrued liabilities |
28,663
|
|
41,006
|
|
|
|
| Taxes other than income tax |
8,142
|
|
7,311
|
|
|
|
| Intercompany payable |
0
|
|
0
|
|
|
|
| Total current liabilities |
106,396
|
|
590,358
|
|
|
|
| Long-term debt, less current portion |
3,535,872
|
|
2,871,786
|
|
|
|
| Deferred income tax liability |
1,511
|
|
1,499
|
|
|
|
| Other long-term liabilities |
61,219
|
|
65,577
|
|
|
|
| Series D preferred units |
0
|
|
0
|
|
|
|
| Total partners' equity |
1,399,337
|
|
1,868,332
|
|
|
|
| Total liabilities, mezzanine equity and partners’ equity |
5,104,335
|
|
5,397,552
|
|
|
|
| Guarantor Subsidiaries [Member] | NuPOP | Reportable Legal Entities [Member] |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Cash and cash equivalents |
0
|
|
0
|
|
|
|
| Receivables, net |
0
|
|
4
|
|
|
|
| Inventories |
3,625
|
|
4,821
|
|
|
|
| Prepaid and other current assets |
1,042
|
|
600
|
|
|
|
| Intercompany receivable |
0
|
|
0
|
|
|
|
| Total current assets |
4,667
|
|
5,425
|
|
|
|
| Property, plant and equipment, net |
594,592
|
|
612,128
|
|
|
|
| Intangible assets, net |
0
|
|
0
|
|
|
|
| Goodwill |
170,652
|
|
170,652
|
|
|
|
| Investment in wholly owned subsidiaries |
967,664
|
|
1,155,855
|
|
|
|
| Other long-term assets, net |
31,602
|
|
32,121
|
|
|
|
| Total assets |
1,769,177
|
|
1,976,181
|
|
|
|
| Liabilities, Mezzanine Equity and Partners’ Equity |
|
|
|
|
|
|
| Accounts payable |
7,545
|
|
8,379
|
|
|
|
| Short-term debt and current portion of finance leases |
502
|
|
299
|
|
|
|
| Current portion of long-term debt |
|
|
0
|
|
|
|
| Accrued interest payable |
6
|
|
4
|
|
|
|
| Accrued liabilities |
5,424
|
|
8,463
|
|
|
|
| Taxes other than income tax |
6,667
|
|
5,160
|
|
|
|
| Intercompany payable |
1,260,470
|
|
1,448,280
|
|
|
|
| Total current liabilities |
1,280,614
|
|
1,470,585
|
|
|
|
| Long-term debt, less current portion |
1,723
|
|
1,127
|
|
|
|
| Deferred income tax liability |
9
|
|
10
|
|
|
|
| Other long-term liabilities |
12,264
|
|
13,774
|
|
|
|
| Series D preferred units |
0
|
|
0
|
|
|
|
| Total partners' equity |
474,567
|
|
490,685
|
|
|
|
| Total liabilities, mezzanine equity and partners’ equity |
1,769,177
|
|
1,976,181
|
|
|
|
| Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member] |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Cash and cash equivalents |
19,713
|
|
15,992
|
|
|
|
| Receivables, net |
121,509
|
|
152,209
|
|
|
|
| Inventories |
4,379
|
|
5,619
|
|
|
|
| Prepaid and other current assets |
6,880
|
|
4,947
|
|
|
|
| Intercompany receivable |
461,420
|
|
610,298
|
|
|
|
| Total current assets |
613,901
|
|
789,065
|
|
|
|
| Property, plant and equipment, net |
1,464,991
|
|
1,448,321
|
|
|
|
| Intangible assets, net |
610,448
|
|
641,949
|
|
|
|
| Goodwill |
559,748
|
|
685,748
|
|
|
|
| Investment in wholly owned subsidiaries |
474,562
|
|
490,826
|
|
|
|
| Other long-term assets, net |
51,350
|
|
32,899
|
|
|
|
| Total assets |
3,775,000
|
|
4,088,808
|
|
|
|
| Liabilities, Mezzanine Equity and Partners’ Equity |
|
|
|
|
|
|
| Accounts payable |
34,356
|
|
53,964
|
|
|
|
| Short-term debt and current portion of finance leases |
102
|
|
25
|
|
|
|
| Current portion of long-term debt |
|
|
0
|
|
|
|
| Accrued interest payable |
26
|
|
33
|
|
|
|
| Accrued liabilities |
33,698
|
|
57,716
|
|
|
|
| Taxes other than income tax |
8,116
|
|
185
|
|
|
|
| Intercompany payable |
0
|
|
0
|
|
|
|
| Total current liabilities |
76,298
|
|
111,923
|
|
|
|
| Long-term debt, less current portion |
60,229
|
|
62,005
|
|
|
|
| Deferred income tax liability |
10,493
|
|
10,918
|
|
|
|
| Other long-term liabilities |
86,625
|
|
69,588
|
|
|
|
| Series D preferred units |
0
|
|
0
|
|
|
|
| Total partners' equity |
3,541,355
|
|
3,834,374
|
|
|
|
| Total liabilities, mezzanine equity and partners’ equity |
$ 3,775,000
|
|
$ 4,088,808
|
|
|
|