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CONDENSED CONSOLIDATING FINANCIAL STATEMENTS Table 3 (Details) (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Cash flows from operating activities:    
Net cash provided by (used in) operating activities $ 315,195 $ 378,540
Cash flows from investing activities:    
Capital expenditures (229,548) (260,701)
Change in accounts payable related to capital expenditures 10,910 (2,879)
Proceeds from sale or disposition of assets 25,975 116,467
Increase in note receivable from related party (13,328) (50,761)
Other, net (853) 156
Net cash provided by (used in) investing activities (206,844) (197,718)
Cash flows from financing activities:    
Debt borrowings 742,636 1,299,220
Note offering, net 0 687,151
Debt repayments (635,069) (1,897,182)
Distributions to unitholders and general partner (294,153) (294,153)
Proceeds from (payments for) termination of interest rate swaps 0 (33,697)
Net intercompany borrowings (repayments) 0 0
Other, net 2,540 3,168
Net cash provided by (used in) financing activities (184,046) (235,493)
Effect of foreign exchange rate changes on cash 638 (4,412)
Net increase (decrease) in cash and cash equivalents (75,057) (59,083)
Cash and cash equivalents as of the beginning of the period 100,743 83,602
Cash and cash equivalents as of the end of the period 25,686 24,519
Eliminations
    
Cash flows from operating activities:    
Net cash provided by (used in) operating activities (392,225) (294,182)
Cash flows from investing activities:    
Capital expenditures 0 0
Change in accounts payable related to capital expenditures 0 0
Proceeds from sale or disposition of assets 0 0
Increase in note receivable from related party 0 0
Other, net 23 141
Net cash provided by (used in) investing activities 23 141
Cash flows from financing activities:    
Debt borrowings 0 0
Note offering, net   0
Debt repayments 0 0
Distributions to unitholders and general partner 392,225 294,182
Proceeds from (payments for) termination of interest rate swaps   0
Net intercompany borrowings (repayments) 0 0
Other, net (23) (141)
Net cash provided by (used in) financing activities 392,202 294,041
Effect of foreign exchange rate changes on cash 0 0
Net increase (decrease) in cash and cash equivalents 0 0
Cash and cash equivalents as of the beginning of the period 0 0
Cash and cash equivalents as of the end of the period 0 0
NuStar Energy
    
Cash flows from operating activities:    
Net cash provided by (used in) operating activities 292,757 292,499
Cash flows from investing activities:    
Capital expenditures 0 0
Change in accounts payable related to capital expenditures 0 0
Proceeds from sale or disposition of assets 0 0
Increase in note receivable from related party 0 0
Other, net 0 0
Net cash provided by (used in) investing activities 0 0
Cash flows from financing activities:    
Debt borrowings 0 0
Note offering, net   0
Debt repayments 0 0
Distributions to unitholders and general partner (294,153) (294,153)
Proceeds from (payments for) termination of interest rate swaps   0
Net intercompany borrowings (repayments) 1,405 (5,047)
Other, net 0 (46)
Net cash provided by (used in) financing activities (292,748) (299,246)
Effect of foreign exchange rate changes on cash 0 0
Net increase (decrease) in cash and cash equivalents 9 (6,747)
Cash and cash equivalents as of the beginning of the period 904 7,033
Cash and cash equivalents as of the end of the period 913 286
NuStar Logistics
    
Cash flows from operating activities:    
Net cash provided by (used in) operating activities 133,967 159,157
Cash flows from investing activities:    
Capital expenditures (174,296) (181,580)
Change in accounts payable related to capital expenditures 18,470 (5,419)
Proceeds from sale or disposition of assets 651 116,348
Increase in note receivable from related party (13,328) (50,761)
Other, net (46) 15
Net cash provided by (used in) investing activities (168,549) (121,397)
Cash flows from financing activities:    
Debt borrowings 742,636 1,299,220
Note offering, net   687,151
Debt repayments (635,069) (1,647,182)
Distributions to unitholders and general partner (196,101) (294,153)
Proceeds from (payments for) termination of interest rate swaps   (33,697)
Net intercompany borrowings (repayments) 100,930 (53,557)
Other, net (114) 3,355
Net cash provided by (used in) financing activities 12,282 (38,863)
Effect of foreign exchange rate changes on cash 0 0
Net increase (decrease) in cash and cash equivalents (22,300) (1,103)
Cash and cash equivalents as of the beginning of the period 22,307 1,112
Cash and cash equivalents as of the end of the period 7 9
NuPOP
    
Cash flows from operating activities:    
Net cash provided by (used in) operating activities 76,913 50,587
Cash flows from investing activities:    
Capital expenditures (6,308) (13,449)
Change in accounts payable related to capital expenditures 81 1,534
Proceeds from sale or disposition of assets 13 28
Increase in note receivable from related party 0 0
Other, net 0 0
Net cash provided by (used in) investing activities (6,214) (11,887)
Cash flows from financing activities:    
Debt borrowings 0 0
Note offering, net   0
Debt repayments 0 (250,000)
Distributions to unitholders and general partner (98,052) 0
Proceeds from (payments for) termination of interest rate swaps   0
Net intercompany borrowings (repayments) 27,353 211,300
Other, net 0 0
Net cash provided by (used in) financing activities (70,699) (38,700)
Effect of foreign exchange rate changes on cash 0 0
Net increase (decrease) in cash and cash equivalents 0 0
Cash and cash equivalents as of the beginning of the period 0 0
Cash and cash equivalents as of the end of the period 0 0
Non-Guarantor Subsidiaries
    
Cash flows from operating activities:    
Net cash provided by (used in) operating activities 203,783 170,479
Cash flows from investing activities:    
Capital expenditures (48,944) (65,672)
Change in accounts payable related to capital expenditures (7,641) 1,006
Proceeds from sale or disposition of assets 25,311 91
Increase in note receivable from related party 0 0
Other, net (830) 0
Net cash provided by (used in) investing activities (32,104) (64,575)
Cash flows from financing activities:    
Debt borrowings 0 0
Note offering, net   0
Debt repayments 0 0
Distributions to unitholders and general partner (98,072) (29)
Proceeds from (payments for) termination of interest rate swaps   0
Net intercompany borrowings (repayments) (129,688) (152,696)
Other, net 2,677 0
Net cash provided by (used in) financing activities (225,083) (152,725)
Effect of foreign exchange rate changes on cash 638 (4,412)
Net increase (decrease) in cash and cash equivalents (52,766) (51,233)
Cash and cash equivalents as of the beginning of the period 77,532 75,457
Cash and cash equivalents as of the end of the period $ 24,766 $ 24,224