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Acquisition of Oiltanking Partners, L.P., Step 2 (Details) (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended | 1 Months Ended
--- | --- | ---
Dec. 31, 2014 | Feb. 28, 2015
Oiltanking Partners, L.P. [Abstract] |  |
Intangible assets reclassified to goodwill | $ 0 us-gaap_GoodwillPurchaseAccountingAdjustments |
Oiltanking Partners L.P. [Member] |  |
Oiltanking Partners, L.P. [Abstract] |  |
Number of common units issued for each subordinated unit converted (in units) | 1 us-gaap_ConversionOfStockSharesIssued1 / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPMember |
Number of units owned upon conversion (in units) | 54,799,604 epd_NumberOfUnitsOwnedUponConversion / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPMember |
Limited partner interests acquired (in hundredths) | 65.90%us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeIncludingSubsequentAcquisitionPercentage / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPMember |
Oiltanking Partners L.P. - Step 2 [Member] |  |
Oiltanking Partners, L.P. [Abstract] |  |
Common units issued in connection with acquisition (in units) |  | 36,827,557 us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPStep2Member
Common units exchanged for each Oiltanking unit (in units) |  | 1.3 epd_BusinessCombinationCommonUnitsExchanged / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPStep2Member
Intangible assets reclassified to goodwill |  | $ 1,460.0 us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPStep2Member

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