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Acquisition of Oiltanking Partners, L.P. (Details) (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Dec. 31, 2014 bbl | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2014 | Oct. 02, 2014 bbl Dock
Oiltanking Partners, L.P. [Abstract] |  |  |  |  |
Cash paid to acquire business | $ 2,416.8 us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired | $ 0 us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired | $ 0 us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired |  |
Storage capacity for crude oil and petroleum products (in Bbls) | 225,000,000 epd_NumberOfBarrelsOfStorageCapacity |  |  | 225,000,000 epd_NumberOfBarrelsOfStorageCapacity |
Oiltanking Partners L.P. [Member] |  |  |  |  |
Oiltanking Partners, L.P. [Abstract] |  |  |  |  |
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 |
Total consideration for acquisition | 4,400.0 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPMember |  |  |  |
Number of ship and barge docks owned |  |  |  |  | 12 epd_NumberOfShipAndBargeDocksOwned / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPMember
Storage capacity for crude oil and petroleum products (in Bbls) |  |  |  |  | 26,000,000 epd_NumberOfBarrelsOfStorageCapacity / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPMember
Revenues from acquired assets |  |  |  | 57.5 epd_RevenuesFromAcquiredAssets / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPMember |
Net income from acquired assets |  |  |  | 8.1 epd_NetIncomeFromAcquiredAssets / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPMember |
Oiltanking Partners L.P. - Step 1 [Member] |  |  |  |  |
Oiltanking Partners, L.P. [Abstract] |  |  |  |  |
Common units acquired (in units) | 15,899,802 epd_BusinessCombinationNumberOfCommonUnitsAcquired / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPStep1Member |  |  |  |
Subordinated units acquired (in units) | 38,899,802 epd_BusinessCombinationNumberOfSubordinatedUnitsAcquired / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPStep1Member |  |  |  |
Total consideration for acquisition | 4,609.8 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPStep1Member |  |  |  |
Cash paid to acquire business | 2,210.0 us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPStep1Member |  |  |  |
Common units issued in connection with acquisition (in units) | 54,807,352 us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPStep1Member |  |  |  |
Cash paid to assume notes receivable | 228.3 us-gaap_OtherPaymentsToAcquireBusinesses / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPStep1Member |  |  |  |
Acquisition related costs | $ 3.8 us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPStep1Member |  |  |  |

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