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Business Segment Information (Schedule Of Segment Information) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014
Segment Reporting Information [Line Items] |  |
Segment margin | $ 94,121 gel_SegmentMargin | $ 77,351 gel_SegmentMargin
Capital Expenditures | 125,208 gel_CapitalExpenditures | 102,778 gel_CapitalExpenditures
Pipeline Transportation Services Revenues | 19,858 gel_PipelineTransportationServicesRevenues | 20,920 gel_PipelineTransportationServicesRevenues
Refinery Services Revenues | 46,124 gel_RefineryServicesRevenues | 54,193 gel_RefineryServicesRevenues
Supply And Logistics Revenues | 403,504 gel_SupplyAndLogisticsRevenues | 888,313 gel_SupplyAndLogisticsRevenues
External customers | 526,857 gel_ExternalCustomerRevenues | 1,019,719 gel_ExternalCustomerRevenues
Intersegment | 0 gel_IntersegmentRevenues | 0 gel_IntersegmentRevenues
Total revenues | 526,857 us-gaap_Revenues | 1,019,719 us-gaap_Revenues
Pipeline Transportation [Member] |  |
Segment Reporting Information [Line Items] |  |
Segment margin | 14,323 gel_SegmentMargin / us-gaap_StatementBusinessSegmentsAxis = gel_OnshorePipelineTransportationMember | 14,689 gel_SegmentMargin / us-gaap_StatementBusinessSegmentsAxis = gel_OnshorePipelineTransportationMember
Capital Expenditures | 68,591 gel_CapitalExpenditures / us-gaap_StatementBusinessSegmentsAxis = gel_OnshorePipelineTransportationMember | 23,896 gel_CapitalExpenditures / us-gaap_StatementBusinessSegmentsAxis = gel_OnshorePipelineTransportationMember
External customers | 15,831 gel_ExternalCustomerRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_OnshorePipelineTransportationMember | 15,503 gel_ExternalCustomerRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_OnshorePipelineTransportationMember
Intersegment | 3,237 gel_IntersegmentRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_OnshorePipelineTransportationMember | 4,470 gel_IntersegmentRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_OnshorePipelineTransportationMember
Total revenues | 19,068 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = gel_OnshorePipelineTransportationMember | 19,973 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = gel_OnshorePipelineTransportationMember
Offshore Pipeline Transportation [Member] |  |
Segment Reporting Information [Line Items] |  |
Segment margin | 25,198 gel_SegmentMargin / us-gaap_StatementBusinessSegmentsAxis = gel_OffshorePipelineTransportationMember | 13,403 gel_SegmentMargin / us-gaap_StatementBusinessSegmentsAxis = gel_OffshorePipelineTransportationMember
Capital Expenditures | 2,053 gel_CapitalExpenditures / us-gaap_StatementBusinessSegmentsAxis = gel_OffshorePipelineTransportationMember | 10,384 gel_CapitalExpenditures / us-gaap_StatementBusinessSegmentsAxis = gel_OffshorePipelineTransportationMember
External customers | 790 gel_ExternalCustomerRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_OffshorePipelineTransportationMember | 947 gel_ExternalCustomerRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_OffshorePipelineTransportationMember
Intersegment | 0 gel_IntersegmentRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_OffshorePipelineTransportationMember | 0 gel_IntersegmentRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_OffshorePipelineTransportationMember
Total revenues | 790 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = gel_OffshorePipelineTransportationMember | 947 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = gel_OffshorePipelineTransportationMember
Refinery Services [Member] |  |
Segment Reporting Information [Line Items] |  |
Segment margin | 19,160 gel_SegmentMargin / us-gaap_StatementBusinessSegmentsAxis = gel_RefineryServicesMember | 20,872 gel_SegmentMargin / us-gaap_StatementBusinessSegmentsAxis = gel_RefineryServicesMember
Capital Expenditures | 1,212 gel_CapitalExpenditures / us-gaap_StatementBusinessSegmentsAxis = gel_RefineryServicesMember | 302 gel_CapitalExpenditures / us-gaap_StatementBusinessSegmentsAxis = gel_RefineryServicesMember
External customers | 48,435 gel_ExternalCustomerRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_RefineryServicesMember | 57,107 gel_ExternalCustomerRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_RefineryServicesMember
Intersegment | (2,311)gel_IntersegmentRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_RefineryServicesMember | (2,914)gel_IntersegmentRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_RefineryServicesMember
Total revenues | 46,124 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = gel_RefineryServicesMember | 54,193 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = gel_RefineryServicesMember
Marine Transportation [Member] |  |
Segment Reporting Information [Line Items] |  |
Segment margin | 25,693 gel_SegmentMargin / us-gaap_StatementBusinessSegmentsAxis = gel_MarineTransportationMember | 20,457 gel_SegmentMargin / us-gaap_StatementBusinessSegmentsAxis = gel_MarineTransportationMember
Capital Expenditures | 16,576 gel_CapitalExpenditures / us-gaap_StatementBusinessSegmentsAxis = gel_MarineTransportationMember | 10,959 gel_CapitalExpenditures / us-gaap_StatementBusinessSegmentsAxis = gel_MarineTransportationMember
External customers | 54,640 gel_ExternalCustomerRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_MarineTransportationMember | 51,090 gel_ExternalCustomerRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_MarineTransportationMember
Intersegment | 2,731 gel_IntersegmentRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_MarineTransportationMember | 5,203 gel_IntersegmentRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_MarineTransportationMember
Total revenues | 57,371 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = gel_MarineTransportationMember | 56,293 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = gel_MarineTransportationMember
Supply And Logistics [Member] |  |
Segment Reporting Information [Line Items] |  |
Segment margin | 9,747 gel_SegmentMargin / us-gaap_StatementBusinessSegmentsAxis = gel_SupplyAndLogisticsMember | 7,930 gel_SegmentMargin / us-gaap_StatementBusinessSegmentsAxis = gel_SupplyAndLogisticsMember
Capital Expenditures | 36,776 gel_CapitalExpenditures / us-gaap_StatementBusinessSegmentsAxis = gel_SupplyAndLogisticsMember | 57,237 gel_CapitalExpenditures / us-gaap_StatementBusinessSegmentsAxis = gel_SupplyAndLogisticsMember
External customers | 407,161 gel_ExternalCustomerRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_SupplyAndLogisticsMember | 895,072 gel_ExternalCustomerRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_SupplyAndLogisticsMember
Intersegment | (3,657)gel_IntersegmentRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_SupplyAndLogisticsMember | (6,759)gel_IntersegmentRevenues / us-gaap_StatementBusinessSegmentsAxis = gel_SupplyAndLogisticsMember
Total revenues | 403,504 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = gel_SupplyAndLogisticsMember | 888,313 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = gel_SupplyAndLogisticsMember
Sekco [Member] | Pipeline Transportation [Member] |  |
Segment Reporting Information [Line Items] |  |
Capital Expenditures | $ 1,800 gel_CapitalExpenditures / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = gel_SekcoMember / us-gaap_StatementBusinessSegmentsAxis = gel_OnshorePipelineTransportationMember | $ 10,400 gel_CapitalExpenditures / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = gel_SekcoMember / us-gaap_StatementBusinessSegmentsAxis = gel_OnshorePipelineTransportationMember

X
- 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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- Definition Amount of revenues from transactions with other operating segments. + References No definition available. + Details
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- Definition Revenues recognized during the period for pipeline transportation of crude oil and carbon dioxide. + References No definition available. + Details
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- Definition Revenues recognized during the period for services involving processing of high sulfur gas streams for refineries to remove the sulfur, and sale of the related by-product, sodium hydrosulfide and supplying caustic soda. + References No definition available. + Details
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- Definition Revenues less product costs, operating expenses (excluding non-cash charges such as depreciation and amortization), and segment general and administrative expenses, plus our equity in distributable cash generated by our equity investees. Also excludes the non-cash effects of our stock appreciation rights compensation plan and includes the non-income portion of payments received under direct financing leases. + References No definition available. + Details
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- Definition Revenues recognized during the period for services related to terminaling, blending, storing, marketing and transporting crude oil, petroleum products and carbon dioxide. + References No definition available. + Details
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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