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Equity Investees (Consolidated Financial Statements Related To Equity Investees) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Equity Method Investments and Joint Ventures [Abstract] |  |
Genesis' share of operating earnings | $ 18,260 gel_EquityMethodInvestmentOperatingEarningsOwnedByParent | $ 10,401 gel_EquityMethodInvestmentOperatingEarningsOwnedByParent
Amortization of excess purchase price | (2,741)gel_AmortizationOfExcessPurchasePriceOfJointVentures | (2,583)gel_AmortizationOfExcessPurchasePriceOfJointVentures
Net equity in earnings | 15,519 us-gaap_IncomeLossFromEquityMethodInvestments | 7,818 us-gaap_IncomeLossFromEquityMethodInvestments
Distributions received | $ 25,902 gel_EquityMethodInvestmentDividendsOrDistributionsOperatingAndInvestingActivities | $ 12,580 gel_EquityMethodInvestmentDividendsOrDistributionsOperatingAndInvestingActivities

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- Definition Amortization of the excess amount of the purchase price over the equity in the joint ventures. + References No definition available. + Details
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- Definition Equity Method Investment, Dividends Or Distributions, Operating and Investing Activities + References No definition available. + Details
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- Definition Equity method investment operating earnings owned by parent before amortization of excess purchase price. + References No definition available. + Details
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- Details
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- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.12) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 7 + Details
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