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CONDENSED CONSOLIDATING FINANCIAL STATEMENTS Table 2 (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Condensed Financial Statements, Captions [Line Items]    
Revenues $ 849,213 $ 998,186
Costs and expenses 768,110 934,828
Operating income (loss) 81,103 63,358
Equity in earnings (loss) of subsidiaries 0 0
Equity in earnings (loss) of joint ventures (4,306) (11,143)
Interest (expense) income, net (33,362) (29,869)
Other income (loss), net 3,678 344
Income (loss) from continuing operations before income tax (benefit) expense 47,113 22,690
Income tax expense 4,117 3,091
Income from continuing operations 42,996 19,599
(Loss) income from discontinued operations, net of tax (3,359) 4,805
Net income 39,637 24,404
Less net income (loss) attributable to noncontrolling interest (107) (161)
Net income attributable to NuStar Energy L.P. 39,744 24,565
Comprehensive income 37,718 22,014
Less comprehensive income (loss) attributable to noncontrolling interest (552) (448)
Comprehensive income attributable to NuStar Energy L.P. 38,270 22,462
NuStar Energy
    
Condensed Financial Statements, Captions [Line Items]    
Revenues 0 0
Costs and expenses 473 491
Operating income (loss) (473) (491)
Equity in earnings (loss) of subsidiaries 40,218 25,056
Equity in earnings (loss) of joint ventures 0 0
Interest (expense) income, net 0 0
Other income (loss), net 0 0
Income (loss) from continuing operations before income tax (benefit) expense 39,745 24,565
Income tax expense 1 0
Income from continuing operations 39,744 24,565
(Loss) income from discontinued operations, net of tax 0 0
Net income 39,744 24,565
Less net income (loss) attributable to noncontrolling interest 0 0
Net income attributable to NuStar Energy L.P. 39,744 24,565
Comprehensive income 39,744 24,565
Less comprehensive income (loss) attributable to noncontrolling interest 0 0
Comprehensive income attributable to NuStar Energy L.P. 39,744 24,565
NuStar Logistics
    
Condensed Financial Statements, Captions [Line Items]    
Revenues 108,219 98,689
Costs and expenses 60,581 65,398
Operating income (loss) 47,638 33,291
Equity in earnings (loss) of subsidiaries 2,784 6,498
Equity in earnings (loss) of joint ventures (8,278) (11,541)
Interest (expense) income, net (33,497) (26,790)
Other income (loss), net (7) 2,808
Income (loss) from continuing operations before income tax (benefit) expense 8,640 4,266
Income tax expense 191 186
Income from continuing operations 8,449 4,080
(Loss) income from discontinued operations, net of tax (168) (516)
Net income 8,281 3,564
Less net income (loss) attributable to noncontrolling interest 0 0
Net income attributable to NuStar Energy L.P. 8,281 3,564
Comprehensive income 10,754 10,532
Less comprehensive income (loss) attributable to noncontrolling interest 0 0
Comprehensive income attributable to NuStar Energy L.P. 10,754 10,532
NuPOP
    
Condensed Financial Statements, Captions [Line Items]    
Revenues 52,421 52,626
Costs and expenses 32,955 36,009
Operating income (loss) 19,466 16,617
Equity in earnings (loss) of subsidiaries 12,454 8,025
Equity in earnings (loss) of joint ventures 0 0
Interest (expense) income, net 14 (3,023)
Other income (loss), net (19) (84)
Income (loss) from continuing operations before income tax (benefit) expense 31,915 21,535
Income tax expense 1 2
Income from continuing operations 31,914 21,533
(Loss) income from discontinued operations, net of tax 0 0
Net income 31,914 21,533
Less net income (loss) attributable to noncontrolling interest 0 0
Net income attributable to NuStar Energy L.P. 31,914 21,533
Comprehensive income 31,914 21,533
Less comprehensive income (loss) attributable to noncontrolling interest 0 0
Comprehensive income attributable to NuStar Energy L.P. 31,914 21,533
Non-Guarantor Subsidiaries
    
Condensed Financial Statements, Captions [Line Items]    
Revenues 696,564 854,896
Costs and expenses 682,076 840,943
Operating income (loss) 14,488 13,953
Equity in earnings (loss) of subsidiaries 31,915 21,566
Equity in earnings (loss) of joint ventures 3,972 398
Interest (expense) income, net 121 (56)
Other income (loss), net 3,704 (2,380)
Income (loss) from continuing operations before income tax (benefit) expense 54,200 33,481
Income tax expense 3,924 2,903
Income from continuing operations 50,276 30,578
(Loss) income from discontinued operations, net of tax (3,191) 5,321
Net income 47,085 35,899
Less net income (loss) attributable to noncontrolling interest (107) (161)
Net income attributable to NuStar Energy L.P. 47,192 36,060
Comprehensive income 42,693 26,541
Less comprehensive income (loss) attributable to noncontrolling interest (552) (448)
Comprehensive income attributable to NuStar Energy L.P. 43,245 26,989
Eliminations
    
Condensed Financial Statements, Captions [Line Items]    
Revenues (7,991) (8,025)
Costs and expenses (7,975) (8,013)
Operating income (loss) (16) (12)
Equity in earnings (loss) of subsidiaries (87,371) (61,145)
Equity in earnings (loss) of joint ventures 0 0
Interest (expense) income, net 0 0
Other income (loss), net 0 0
Income (loss) from continuing operations before income tax (benefit) expense (87,387) (61,157)
Income tax expense 0 0
Income from continuing operations (87,387) (61,157)
(Loss) income from discontinued operations, net of tax 0 0
Net income (87,387) (61,157)
Less net income (loss) attributable to noncontrolling interest 0 0
Net income attributable to NuStar Energy L.P. (87,387) (61,157)
Comprehensive income (87,387) (61,157)
Less comprehensive income (loss) attributable to noncontrolling interest 0 0
Comprehensive income attributable to NuStar Energy L.P. $ (87,387) $ (61,157)