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CONDENSED CONSOLIDATING FINANCIAL STATEMENTS Table 2 (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Condensed Financial Statements, Captions [Line Items]        
Revenues $ 749,745 $ 902,014 $ 1,598,958 $ 1,900,200
Costs and expenses 660,391 825,042 1,428,501 1,759,870
Operating income (loss) 89,354 76,972 170,457 140,330
Equity in earnings (loss) of subsidiaries 0 0 0 0
Equity in earnings (loss) of joint ventures 3,294 (10,128) (1,012) (21,271)
Interest (expense) income, net (33,122) (31,035) (67,539) (62,026)
Interest (expense) income, net (33,122) (29,425) (66,484) (59,294)
Other income (expense), net (474) 2,184 3,204 2,528
Income (loss) from continuing operations before income tax expense 59,052 39,603 106,165 62,293
Income tax expense 1,865 4,891 5,982 7,982
Income from continuing operations 57,187 34,712 100,183 54,311
(Loss) income from discontinued operations, net of tax (1,788) (1,743) (5,147) 3,062
Net income 55,399 32,969 95,036 57,373
Less net income (loss) attributable to noncontrolling interest (115) (117) (222) (278)
Net income attributable to NuStar Energy L.P. 55,514 33,086 95,258 57,651
Comprehensive income 63,926 29,238 101,644 51,252
Less comprehensive income (loss) attributable to noncontrolling interest (117) (1,029) (669) (1,477)
Comprehensive income attributable to NuStar Energy L.P. 64,043 30,267 102,313 52,729
Eliminations
        
Condensed Financial Statements, Captions [Line Items]        
Revenues (406) (9,031) (8,397) (17,056)
Costs and expenses (412) (8,931) (8,387) (16,944)
Operating income (loss) 6 (100) (10) (112)
Equity in earnings (loss) of subsidiaries (105,548) (60,003) (192,919) (121,148)
Equity in earnings (loss) of joint ventures 0 0 0 0
Interest (expense) income, net 0 0 0 0
Other income (expense), net 0 0 0 0
Income (loss) from continuing operations before income tax expense (105,542) (60,103) (192,929) (121,260)
Income tax expense 0 0 0 0
Income from continuing operations (105,542) (60,103) (192,929) (121,260)
(Loss) income from discontinued operations, net of tax 0 0 0 0
Net income (105,542) (60,103) (192,929) (121,260)
Less net income (loss) attributable to noncontrolling interest 0 0 0 0
Net income attributable to NuStar Energy L.P. (105,542) (60,103) (192,929) (121,260)
Comprehensive income (105,542) (60,103) (192,929) (121,260)
Less comprehensive income (loss) attributable to noncontrolling interest 0 0 0 0
Comprehensive income attributable to NuStar Energy L.P. (105,542) (60,103) (192,929) (121,260)
NuStar Energy
        
Condensed Financial Statements, Captions [Line Items]        
Revenues 0 0 0 0
Costs and expenses 400 440 873 931
Operating income (loss) (400) (440) (873) (931)
Equity in earnings (loss) of subsidiaries 55,914 33,526 96,132 58,582
Equity in earnings (loss) of joint ventures 0 0 0 0
Interest (expense) income, net 0 0 0 0
Other income (expense), net 0 0 0 0
Income (loss) from continuing operations before income tax expense 55,514 33,086 95,259 57,651
Income tax expense 0 0 1 0
Income from continuing operations 55,514 33,086 95,258 57,651
(Loss) income from discontinued operations, net of tax 0 0 0 0
Net income 55,514 33,086 95,258 57,651
Less net income (loss) attributable to noncontrolling interest 0 0 0 0
Net income attributable to NuStar Energy L.P. 55,514 33,086 95,258 57,651
Comprehensive income 55,514 33,086 95,258 57,651
Less comprehensive income (loss) attributable to noncontrolling interest 0 0 0 0
Comprehensive income attributable to NuStar Energy L.P. 55,514 33,086 95,258 57,651
NuStar Logistics
        
Condensed Financial Statements, Captions [Line Items]        
Revenues 126,744 102,833 234,963 201,522
Costs and expenses 71,471 47,612 132,052 113,010
Operating income (loss) 55,273 55,221 102,911 88,512
Equity in earnings (loss) of subsidiaries (3,643) 1,145 (859) 7,643
Equity in earnings (loss) of joint ventures 0 (11,970) (8,278) (23,511)
Interest (expense) income, net (33,318) (27,547) (66,815) (54,337)
Other income (expense), net 549 (342) 542 2,466
Income (loss) from continuing operations before income tax expense 18,861 16,507 27,501 20,773
Income tax expense 217 88 408 274
Income from continuing operations 18,644 16,419 27,093 20,499
(Loss) income from discontinued operations, net of tax 0 (565) (168) (1,081)
Net income 18,644 15,854 26,925 19,418
Less net income (loss) attributable to noncontrolling interest 0 0 0 0
Net income attributable to NuStar Energy L.P. 18,644 15,854 26,925 19,418
Comprehensive income 20,914 20,028 31,668 30,560
Less comprehensive income (loss) attributable to noncontrolling interest 0 0 0 0
Comprehensive income attributable to NuStar Energy L.P. 20,914 20,028 31,668 30,560
NuPOP
        
Condensed Financial Statements, Captions [Line Items]        
Revenues 57,038 47,894 109,459 100,520
Costs and expenses 35,808 36,028 68,763 72,037
Operating income (loss) 21,230 11,866 40,696 28,483
Equity in earnings (loss) of subsidiaries 16,018 7,733 28,472 15,758
Equity in earnings (loss) of joint ventures 0 0 0 0
Interest (expense) income, net 8 (1,994) 22 (5,017)
Other income (expense), net 3 11 (16) (73)
Income (loss) from continuing operations before income tax expense 37,259 17,616 69,174 39,151
Income tax expense 2 1 3 3
Income from continuing operations 37,257 17,615 69,171 39,148
(Loss) income from discontinued operations, net of tax 0 0 0 0
Net income 37,257 17,615 69,171 39,148
Less net income (loss) attributable to noncontrolling interest 0 0 0 0
Net income attributable to NuStar Energy L.P. 37,257 17,615 69,171 39,148
Comprehensive income 37,257 17,615 69,171 39,148
Less comprehensive income (loss) attributable to noncontrolling interest 0 0 0 0
Comprehensive income attributable to NuStar Energy L.P. 37,257 17,615 69,171 39,148
Non-Guarantor Subsidiaries
        
Condensed Financial Statements, Captions [Line Items]        
Revenues 566,369 760,318 1,262,933 1,615,214
Costs and expenses 553,124 749,893 1,235,200 1,590,836
Operating income (loss) 13,245 10,425 27,733 24,378
Equity in earnings (loss) of subsidiaries 37,259 17,599 69,174 39,165
Equity in earnings (loss) of joint ventures 3,294 1,842 7,266 2,240
Interest (expense) income, net 188 116 309 60
Other income (expense), net (1,026) 2,515 2,678 135
Income (loss) from continuing operations before income tax expense 52,960 32,497 107,160 65,978
Income tax expense 1,646 4,802 5,570 7,705
Income from continuing operations 51,314 27,695 101,590 58,273
(Loss) income from discontinued operations, net of tax (1,788) (1,178) (4,979) 4,143
Net income 49,526 26,517 96,611 62,416
Less net income (loss) attributable to noncontrolling interest (115) (117) (222) (278)
Net income attributable to NuStar Energy L.P. 49,641 26,634 96,833 62,694
Comprehensive income 55,783 18,612 98,476 45,153
Less comprehensive income (loss) attributable to noncontrolling interest (117) (1,029) (669) (1,477)
Comprehensive income attributable to NuStar Energy L.P. $ 55,900 $ 19,641 $ 99,145 $ 46,630