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Partnership Operations, Organization and Basis of Presentation (Details) | 12 Months Ended | 3 Months Ended |
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Dec. 31, 2014 Segment Fractionator Platform Plant mi bbl ft3 | Dec. 31, 2014 | Oct. 02, 2014 bbl
Partnership Operations, Organization and Basis of Presentation [Abstract] |  |  |
Number of miles of onshore and offshore pipelines | 51,300 epd_NumberOfMilesOfOnshoreAndOffshorePipelines | 51,300 epd_NumberOfMilesOfOnshoreAndOffshorePipelines |
Number of barrels of storage capacity | 225,000,000 epd_NumberOfBarrelsOfStorageCapacity | 225,000,000 epd_NumberOfBarrelsOfStorageCapacity |
Number of cubic feet of storage capacity | 14,000,000,000 epd_NumberOfCubicFeetOfStorageCapacity | 14,000,000,000 epd_NumberOfCubicFeetOfStorageCapacity |
Number of natural gas processing plants | 24 epd_NumberOfNaturalGasProcessingPlants | 24 epd_NumberOfNaturalGasProcessingPlants |
Number of fractionators | 22 epd_NumberOfFractionators | 22 epd_NumberOfFractionators |
Number of offshore hub platforms | 6 epd_NumberOfOffshoreHubPlatforms | 6 epd_NumberOfOffshoreHubPlatforms |
Number of reportable segments | 5 us-gaap_NumberOfReportableSegments |  |
Limited partners ownership interest (in hundredths) | 100.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest |  |
Oiltanking Partners L.P. [Member] |  |  |
Partnership Operations, Organization and Basis of Presentation [Abstract] |  |  |
Number of barrels of storage capacity |  |  | 26,000,000 epd_NumberOfBarrelsOfStorageCapacity / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPMember
Business Acquisition [Line Items] |  |  |
Common units acquired (in units) |  | 15,899,802 epd_BusinessCombinationNumberOfCommonUnitsAcquired / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPMember |
Subordinated units acquired (in units) |  | 38,899,802 epd_BusinessCombinationNumberOfSubordinatedUnitsAcquired / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPMember |

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- Definition Refers to number of miles of onshore and offshore pipelines as a part of assets of the entity. + References No definition available. + Details
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- Definition The number of units or percentage investment held by one or more members or limited partners of the LLC or LP. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
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