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Business Segment Information (Schedule Of Segment Information) (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($) | Sep. 30, 2016 USD ($) segment | Sep. 30, 2015 USD ($)
Segment Reporting Information [Line Items] |  |  |  |
Segment margin | $ 141,340 | $ 140,710 | $ 428,707 | $ 333,398
Total revenues | 460,050 | 572,334 | $ 1,284,440 | 1,755,518
Number of Reportable Segments | segment |  |  | 5 |
Offshore pipeline transportation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 89,717 | 61,388 | $ 244,837 | 63,436
Onshore pipeline transportation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 13,999 | 19,909 | 48,400 | 57,910
Refinery services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 45,725 | 43,332 | 129,585 | 135,780
Marine transportation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 55,285 | 60,536 | 159,930 | 180,501
Supply and logistics |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 255,324 | 387,169 | 701,688 | 1,317,891
Sekco [Member] | Onshore pipeline transportation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital Expenditures |  |  | 0 | 2,500
Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment margin | 141,340 | 140,710 | 428,707 | 333,398
Capital Expenditures | 116,750 | 1,622,750 | 358,429 | 1,856,111
External customers | 460,050 | 572,334 | 1,284,440 | 1,755,518
Operating Segments | Offshore pipeline transportation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment margin | 86,557 | 70,943 | 249,457 | 121,241
Capital Expenditures | 3,977 | 1,520,268 | 35,175 | 1,522,407
External customers | 89,717 | 61,388 | 242,672 | 63,436
Operating Segments | Onshore pipeline transportation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment margin | 10,603 | 14,984 | 38,370 | 43,670
Capital Expenditures | 54,968 | 45,933 | 156,977 | 155,417
External customers | 10,846 | 16,735 | 36,356 | 48,422
Operating Segments | Refinery services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment margin | 20,526 | 20,692 | 61,586 | 60,073
Capital Expenditures | 488 | 118 | 1,645 | 1,568
External customers | 48,069 | 45,738 | 136,437 | 142,959
Operating Segments | Marine transportation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment margin | 16,697 | 26,583 | 53,695 | 79,501
Capital Expenditures | 26,937 | 12,489 | 62,928 | 40,151
External customers | 53,573 | 58,490 | 155,197 | 173,733
Operating Segments | Supply and logistics |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment margin | 6,957 | 7,508 | 25,599 | 28,913
Capital Expenditures | 30,380 | 43,942 | 101,704 | 136,568
External customers | 257,845 | 389,983 | 713,778 | 1,326,968
Intersegment Eliminations |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Intersegment | 0 | 0 | 0 | 0
Intersegment Eliminations | Offshore pipeline transportation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Intersegment | 0 | 0 | 2,165 | 0
Intersegment Eliminations | Onshore pipeline transportation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Intersegment | 3,153 | 3,174 | 12,044 | 9,488
Intersegment Eliminations | Refinery services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Intersegment | (2,344) | (2,406) | (6,852) | (7,179)
Intersegment Eliminations | Marine transportation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Intersegment | 1,712 | 2,046 | 4,733 | 6,768
Intersegment Eliminations | Supply and logistics |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Intersegment | $ (2,521) | $ (2,814) | $ (12,090) | $ (9,077)

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- Definition Capital expenditures include both maintenance and growth capital expenditures, such as fixed asset additions (including enhancements to existing facilities and construction of internal growth projects) as well as acquisitions of businesses and interests in equity investees. + References No definition available. + Details
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