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Partnership Operations, Organization and Basis for Presentation (Details) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 Segment Platform Fractionator Plant mi bbl ft3 | Dec. 31, 2014
Related Party Transaction [Line Items] |  |
Number of miles of onshore and offshore pipelines | 51,000 epd_NumberOfMilesOfOnshoreAndOffshorePipelines |
Number of barrels of storage capacity | 225,000,000 epd_NumberOfBarrelsOfStorageCapacity |
Number of cubic feet of storage capacity | 14,000,000,000 epd_NumberOfCubicFeetOfStorageCapacity |
Number of natural gas processing plants | 24 epd_NumberOfNaturalGasProcessingPlants |
Number of fractionators | 22 epd_NumberOfFractionators |
Number of offshore hub platforms | 6 epd_NumberOfOffshoreHubPlatforms |
Number of reportable segments | 5 us-gaap_NumberOfReportableSegments |
Limited partners ownership interest (in hundredths) | 100.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest |
Unit split conversion ratio | 2 us-gaap_StockholdersEquityNoteStockSplitConversionRatio1 |
Oiltanking Partners L.P. [Member] |  |
Business Acquisition [Line Items] |  |
Limited partner interests acquired (in hundredths) |  | 65.90%us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeIncludingSubsequentAcquisitionPercentage / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPMember
EPCO and affiliates [Member] |  |
Related Party Transaction [Line Items] |  |
Percentage of Total Units Outstanding (in hundredths) | 34.60%epd_OutstandingUnitsPercentageOwnedByAffiliatesUnderCommonControl / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember |

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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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