CONDENSED CONSOLIDATING FINANCIAL STATEMENTS Table 1 - Condensed Consolidating Balance Sheets (Details) - USD ($) $ in Thousands |
Jun. 30, 2020 |
Mar. 31, 2020 |
Dec. 31, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2018 |
| Assets |
|
|
|
|
|
|
| Cash and cash equivalents |
$ 17,278
|
|
$ 16,192
|
|
|
|
| Receivables, net |
122,623
|
|
152,530
|
|
|
|
| Inventories |
8,202
|
|
12,393
|
|
|
|
| Prepaid and other current assets |
30,606
|
|
21,933
|
|
|
|
| Intercompany receivable |
0
|
|
0
|
|
|
|
| Total current assets |
178,709
|
|
203,048
|
|
|
|
| Property, plant and equipment, net |
4,090,652
|
|
4,118,979
|
|
|
|
| Intangible assets, net |
655,920
|
|
681,632
|
|
|
|
| Goodwill |
780,853
|
|
1,005,853
|
|
|
|
| Investment in wholly owned subsidiaries |
0
|
|
0
|
|
|
|
| Other long-term assets, net |
130,064
|
|
176,480
|
|
|
|
| Total assets |
5,836,198
|
|
6,185,992
|
|
|
|
| Liabilities, Mezzanine Equity and Partners’ Equity |
|
|
|
|
|
|
| Accounts payable |
77,457
|
|
109,834
|
|
|
|
| Short-term debt and current portion of finance leases |
4,613
|
|
10,046
|
|
|
|
| Current portion of long-term debt |
0
|
|
452,367
|
|
|
|
| Accrued interest payable |
37,748
|
|
37,925
|
|
|
|
| Accrued liabilities |
52,647
|
|
104,285
|
|
|
|
| Taxes other than income tax |
13,830
|
|
12,781
|
|
|
|
| Income tax payable |
2,075
|
|
4,325
|
|
|
|
| Intercompany payable |
0
|
|
0
|
|
|
|
| Total current liabilities |
188,370
|
|
731,563
|
|
|
|
| Long-term debt, less current portion |
3,429,160
|
|
2,934,918
|
|
|
|
| Deferred income tax liability |
11,268
|
|
12,427
|
|
|
|
| Other long-term liabilities |
152,541
|
|
148,939
|
|
|
|
| Series D preferred units |
591,895
|
$ 586,837
|
581,935
|
$ 572,597
|
$ 568,293
|
$ 563,992
|
| Total partners' equity |
1,462,964
|
$ 1,507,814
|
1,776,210
|
$ 1,829,303
|
$ 1,888,677
|
$ 2,257,731
|
| Total liabilities, mezzanine equity and partners’ equity |
5,836,198
|
|
6,185,992
|
|
|
|
| Eliminations [Member] |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Cash and cash equivalents |
0
|
|
0
|
|
|
|
| Receivables, net |
(4,652)
|
|
0
|
|
|
|
| Inventories |
0
|
|
0
|
|
|
|
| Prepaid and other current assets |
0
|
|
0
|
|
|
|
| Intercompany receivable |
(1,665,424)
|
|
(1,887,137)
|
|
|
|
| Total current assets |
(1,670,076)
|
|
(1,887,137)
|
|
|
|
| Property, plant and equipment, net |
0
|
|
0
|
|
|
|
| Intangible assets, net |
0
|
|
0
|
|
|
|
| Goodwill |
0
|
|
0
|
|
|
|
| Investment in wholly owned subsidiaries |
(5,654,070)
|
|
(6,261,287)
|
|
|
|
| Other long-term assets, net |
0
|
|
0
|
|
|
|
| Total assets |
(7,324,146)
|
|
(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 |
(4,652)
|
|
0
|
|
|
|
| Income tax payable |
0
|
|
0
|
|
|
|
| Intercompany payable |
(1,665,424)
|
|
(1,887,137)
|
|
|
|
| Total current liabilities |
(1,670,076)
|
|
(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 |
(5,654,070)
|
|
(6,261,287)
|
|
|
|
| Total liabilities, mezzanine equity and partners’ equity |
(7,324,146)
|
|
(8,148,424)
|
|
|
|
| Parent Company Guarantor [Member] | NuStar Energy | Reportable Legal Entities [Member] |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Cash and cash equivalents |
264
|
|
176
|
|
|
|
| Receivables, net |
0
|
|
0
|
|
|
|
| Inventories |
0
|
|
0
|
|
|
|
| Prepaid and other current assets |
105
|
|
61
|
|
|
|
| Intercompany receivable |
0
|
|
0
|
|
|
|
| Total current assets |
369
|
|
237
|
|
|
|
| Property, plant and equipment, net |
0
|
|
0
|
|
|
|
| Intangible assets, net |
0
|
|
0
|
|
|
|
| Goodwill |
0
|
|
0
|
|
|
|
| Investment in wholly owned subsidiaries |
2,585,212
|
|
2,871,540
|
|
|
|
| Other long-term assets, net |
101
|
|
98
|
|
|
|
| Total assets |
2,585,682
|
|
2,871,875
|
|
|
|
| Liabilities, Mezzanine Equity and Partners’ Equity |
|
|
|
|
|
|
| Accounts payable |
5,717
|
|
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 |
868
|
|
1,425
|
|
|
|
| Taxes other than income tax |
2
|
|
125
|
|
|
|
| Income tax payable |
0
|
|
0
|
|
|
|
| Intercompany payable |
422,781
|
|
438,857
|
|
|
|
| Total current liabilities |
429,368
|
|
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 |
591,895
|
|
581,935
|
|
|
|
| Total partners' equity |
1,564,419
|
|
1,844,106
|
|
|
|
| Total liabilities, mezzanine equity and partners’ equity |
2,585,682
|
|
2,871,875
|
|
|
|
| Subsidiary Issuer [Member] | NuStar Logistics | Reportable Legal Entities [Member] |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Cash and cash equivalents |
705
|
|
24
|
|
|
|
| Receivables, net |
80
|
|
317
|
|
|
|
| Inventories |
1,906
|
|
1,953
|
|
|
|
| Prepaid and other current assets |
25,864
|
|
16,325
|
|
|
|
| Intercompany receivable |
1,253,361
|
|
1,276,839
|
|
|
|
| Total current assets |
1,281,916
|
|
1,295,458
|
|
|
|
| Property, plant and equipment, net |
2,027,712
|
|
2,058,530
|
|
|
|
| Intangible assets, net |
34,971
|
|
39,683
|
|
|
|
| Goodwill |
50,453
|
|
149,453
|
|
|
|
| Investment in wholly owned subsidiaries |
1,636,363
|
|
1,743,066
|
|
|
|
| Other long-term assets, net |
68,365
|
|
111,362
|
|
|
|
| Total assets |
5,099,780
|
|
5,397,552
|
|
|
|
| Liabilities, Mezzanine Equity and Partners’ Equity |
|
|
|
|
|
|
| Accounts payable |
20,220
|
|
42,064
|
|
|
|
| Short-term debt and current portion of finance leases |
4,049
|
|
9,722
|
|
|
|
| Current portion of long-term debt |
|
|
452,367
|
|
|
|
| Accrued interest payable |
37,728
|
|
37,888
|
|
|
|
| Accrued liabilities |
20,668
|
|
40,514
|
|
|
|
| Taxes other than income tax |
6,419
|
|
7,311
|
|
|
|
| Income tax payable |
361
|
|
492
|
|
|
|
| Intercompany payable |
0
|
|
0
|
|
|
|
| Total current liabilities |
89,445
|
|
590,358
|
|
|
|
| Long-term debt, less current portion |
3,378,740
|
|
2,871,786
|
|
|
|
| Deferred income tax liability |
1,499
|
|
1,499
|
|
|
|
| Other long-term liabilities |
65,417
|
|
65,577
|
|
|
|
| Series D preferred units |
0
|
|
0
|
|
|
|
| Total partners' equity |
1,564,679
|
|
1,868,332
|
|
|
|
| Total liabilities, mezzanine equity and partners’ equity |
5,099,780
|
|
5,397,552
|
|
|
|
| Guarantor Subsidiaries [Member] | NuPOP | Reportable Legal Entities [Member] |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Cash and cash equivalents |
0
|
|
0
|
|
|
|
| Receivables, net |
0
|
|
4
|
|
|
|
| Inventories |
2,357
|
|
4,821
|
|
|
|
| Prepaid and other current assets |
1,411
|
|
600
|
|
|
|
| Intercompany receivable |
0
|
|
0
|
|
|
|
| Total current assets |
3,768
|
|
5,425
|
|
|
|
| Property, plant and equipment, net |
600,471
|
|
612,128
|
|
|
|
| Intangible assets, net |
0
|
|
0
|
|
|
|
| Goodwill |
170,652
|
|
170,652
|
|
|
|
| Investment in wholly owned subsidiaries |
952,846
|
|
1,155,855
|
|
|
|
| Other long-term assets, net |
31,960
|
|
32,121
|
|
|
|
| Total assets |
1,759,697
|
|
1,976,181
|
|
|
|
| Liabilities, Mezzanine Equity and Partners’ Equity |
|
|
|
|
|
|
| Accounts payable |
8,638
|
|
8,379
|
|
|
|
| Short-term debt and current portion of finance leases |
473
|
|
299
|
|
|
|
| Current portion of long-term debt |
|
|
0
|
|
|
|
| Accrued interest payable |
6
|
|
4
|
|
|
|
| Accrued liabilities |
8,223
|
|
8,461
|
|
|
|
| Taxes other than income tax |
5,715
|
|
5,160
|
|
|
|
| Income tax payable |
1
|
|
2
|
|
|
|
| Intercompany payable |
1,242,643
|
|
1,448,280
|
|
|
|
| Total current liabilities |
1,265,699
|
|
1,470,585
|
|
|
|
| Long-term debt, less current portion |
1,773
|
|
1,127
|
|
|
|
| Deferred income tax liability |
10
|
|
10
|
|
|
|
| Other long-term liabilities |
12,680
|
|
13,774
|
|
|
|
| Series D preferred units |
0
|
|
0
|
|
|
|
| Total partners' equity |
479,535
|
|
490,685
|
|
|
|
| Total liabilities, mezzanine equity and partners’ equity |
1,759,697
|
|
1,976,181
|
|
|
|
| Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member] |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Cash and cash equivalents |
16,309
|
|
15,992
|
|
|
|
| Receivables, net |
127,195
|
|
152,209
|
|
|
|
| Inventories |
3,939
|
|
5,619
|
|
|
|
| Prepaid and other current assets |
3,226
|
|
4,947
|
|
|
|
| Intercompany receivable |
412,063
|
|
610,298
|
|
|
|
| Total current assets |
562,732
|
|
789,065
|
|
|
|
| Property, plant and equipment, net |
1,462,469
|
|
1,448,321
|
|
|
|
| Intangible assets, net |
620,949
|
|
641,949
|
|
|
|
| Goodwill |
559,748
|
|
685,748
|
|
|
|
| Investment in wholly owned subsidiaries |
479,649
|
|
490,826
|
|
|
|
| Other long-term assets, net |
29,638
|
|
32,899
|
|
|
|
| Total assets |
3,715,185
|
|
4,088,808
|
|
|
|
| Liabilities, Mezzanine Equity and Partners’ Equity |
|
|
|
|
|
|
| Accounts payable |
42,882
|
|
53,964
|
|
|
|
| Short-term debt and current portion of finance leases |
91
|
|
25
|
|
|
|
| Current portion of long-term debt |
|
|
0
|
|
|
|
| Accrued interest payable |
14
|
|
33
|
|
|
|
| Accrued liabilities |
22,888
|
|
53,885
|
|
|
|
| Taxes other than income tax |
6,346
|
|
185
|
|
|
|
| Income tax payable |
1,713
|
|
3,831
|
|
|
|
| Intercompany payable |
0
|
|
0
|
|
|
|
| Total current liabilities |
73,934
|
|
111,923
|
|
|
|
| Long-term debt, less current portion |
48,647
|
|
62,005
|
|
|
|
| Deferred income tax liability |
9,759
|
|
10,918
|
|
|
|
| Other long-term liabilities |
74,444
|
|
69,588
|
|
|
|
| Series D preferred units |
0
|
|
0
|
|
|
|
| Total partners' equity |
3,508,401
|
|
3,834,374
|
|
|
|
| Total liabilities, mezzanine equity and partners’ equity |
$ 3,715,185
|
|
$ 4,088,808
|
|
|
|