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Commitments and Contingencies, Liquidity Option Agreement (Details) (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended |
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Dec. 31, 2014 | Oct. 02, 2014
Liquidity Option Agreement [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Probability weighted discounted cash flows | 119.4 epd_ProbabilityWeightedDiscountedCashFlows / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember |
Liquidity Option Agreement [Member] | 50% Probability [Member] | M&B exercises option; OTA owns 100% of units |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Number of units held by limited partner (in units) | 54,800,000 epd_NumberOfUnitsHeldByLimitedPartnerInMillionsOfUnits / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / epd_ProbabilityAxis = epd_FiftyPercentProbabilityMember / epd_ScenarioAxis = epd_LiquidityOptionScenarioAMember |
Discounted cash flows | 164.7 epd_DiscountedCashFlows / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / epd_ProbabilityAxis = epd_FiftyPercentProbabilityMember / epd_ScenarioAxis = epd_LiquidityOptionScenarioAMember |
Probability weighted discounted cash flows | 82.4 epd_ProbabilityWeightedDiscountedCashFlows / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / epd_ProbabilityAxis = epd_FiftyPercentProbabilityMember / epd_ScenarioAxis = epd_LiquidityOptionScenarioAMember |
Liquidity Option Agreement [Member] | 20% Probability [Member] | M&B exercises option; OTA owns 75% of units |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Number of units held by limited partner (in units) | 41,100,000 epd_NumberOfUnitsHeldByLimitedPartnerInMillionsOfUnits / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / epd_ProbabilityAxis = epd_TwentyPercentProbabilityMember / epd_ScenarioAxis = epd_LiquidityOptionAgreementScenarioBMember |
Discounted cash flows | 123.5 epd_DiscountedCashFlows / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / epd_ProbabilityAxis = epd_TwentyPercentProbabilityMember / epd_ScenarioAxis = epd_LiquidityOptionAgreementScenarioBMember |
Probability weighted discounted cash flows | 24.7 epd_ProbabilityWeightedDiscountedCashFlows / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / epd_ProbabilityAxis = epd_TwentyPercentProbabilityMember / epd_ScenarioAxis = epd_LiquidityOptionAgreementScenarioBMember |
Liquidity Option Agreement [Member] | 10% Probability [Member] | M&B exercises option; OTA owns 50% of units |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Number of units held by limited partner (in units) | 27,400,000 epd_NumberOfUnitsHeldByLimitedPartnerInMillionsOfUnits / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / epd_ProbabilityAxis = epd_TenPercentProbabilityMember / epd_ScenarioAxis = epd_LiquidityOptionAgreementScenarioCMember |
Discounted cash flows | 82.4 epd_DiscountedCashFlows / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / epd_ProbabilityAxis = epd_TenPercentProbabilityMember / epd_ScenarioAxis = epd_LiquidityOptionAgreementScenarioCMember |
Probability weighted discounted cash flows | 8.2 epd_ProbabilityWeightedDiscountedCashFlows / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / epd_ProbabilityAxis = epd_TenPercentProbabilityMember / epd_ScenarioAxis = epd_LiquidityOptionAgreementScenarioCMember |
Liquidity Option Agreement [Member] | 10% Probability [Member] | M&B exercises option; OTA owns 25% of units |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Number of units held by limited partner (in units) | 13,700,000 epd_NumberOfUnitsHeldByLimitedPartnerInMillionsOfUnits / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / epd_ProbabilityAxis = epd_TenPercentProbabilityMember / epd_ScenarioAxis = epd_LiquidityOptionAgreementScenarioDMember |
Discounted cash flows | 41.2 epd_DiscountedCashFlows / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / epd_ProbabilityAxis = epd_TenPercentProbabilityMember / epd_ScenarioAxis = epd_LiquidityOptionAgreementScenarioDMember |
Probability weighted discounted cash flows | 4.1 epd_ProbabilityWeightedDiscountedCashFlows / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / epd_ProbabilityAxis = epd_TenPercentProbabilityMember / epd_ScenarioAxis = epd_LiquidityOptionAgreementScenarioDMember |
Liquidity Option Agreement [Member] | 10% Probability [Member] | M&B does not exercise option |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Number of units held by limited partner (in units) | 0 epd_NumberOfUnitsHeldByLimitedPartnerInMillionsOfUnits / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / epd_ProbabilityAxis = epd_TenPercentProbabilityMember / epd_ScenarioAxis = epd_LiquidityOptionAgreementScenarioEMember |
Discounted cash flows | 0 epd_DiscountedCashFlows / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / epd_ProbabilityAxis = epd_TenPercentProbabilityMember / epd_ScenarioAxis = epd_LiquidityOptionAgreementScenarioEMember |
Probability weighted discounted cash flows | 0 epd_ProbabilityWeightedDiscountedCashFlows / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / epd_ProbabilityAxis = epd_TenPercentProbabilityMember / epd_ScenarioAxis = epd_LiquidityOptionAgreementScenarioEMember |
Level 3 [Member] | Liquidity Option Agreement [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Fair value inputs, Expected life of OTA following option exercise (in years) | 30 |
Fair value inputs, Interest rate on assumed debt of OTA following option exercise | 4.9% over 30 years |
Fair value inputs, federal and state tax rate (in hundredths) | 38.00%epd_FairValueInputsFederalAndStateTaxRate / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember |
Cash flow projections discount rate (in hundredths) | 7.40%us-gaap_FairValueInputsDiscountRate / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember |
Liquidity Option Agreement [Abstract] |  |
Liquidity Option Agreement | 119.4 epd_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiquidityOption / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember |
Level 3 [Member] | Liquidity Option Agreement [Member] | Maximum [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Fair value inputs, Estimated growth rates in Enterprise earnings before interest, taxes, depreciation and amortization (in hundredths) | 14.00%epd_FairValueInputsPartnershipGrowthRate / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
Fair value inputs, OTA ownership interest in Enterprise common units (in hundredths) | 2.80%epd_FairValueInputsOwnershipInterestInCompany / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
Fair value inputs, Forecasted yield on Enterprise common units (in hundredths) | 5.50%epd_FairValueInputsForecastedYieldOnUnits / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
Level 3 [Member] | Liquidity Option Agreement [Member] | Minimum [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Fair value inputs, Estimated growth rates in Enterprise earnings before interest, taxes, depreciation and amortization (in hundredths) | 3.00%epd_FairValueInputsPartnershipGrowthRate / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / us-gaap_RangeAxis = us-gaap_MinimumMember |
Fair value inputs, OTA ownership interest in Enterprise common units (in hundredths) | 1.90%epd_FairValueInputsOwnershipInterestInCompany / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / us-gaap_RangeAxis = us-gaap_MinimumMember |
Fair value inputs, Forecasted yield on Enterprise common units (in hundredths) | 4.00%epd_FairValueInputsForecastedYieldOnUnits / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / us-gaap_RangeAxis = us-gaap_MinimumMember |
Oiltanking Partners L.P. - Step 1 [Member] |  |
Business Acquisition [Line Items] |  |
Common units issued in connection with acquisition (in units) | 54,807,352 us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPStep1Member |
Liquidity Option Agreement [Abstract] |  |
Liquidity Option Agreement |  | $ 119.4 epd_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiquidityOption / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPStep1Member
Oiltanking Partners L.P. - Step 1 [Member] | Maximum [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Cash flow projections discount rate (in hundredths) | 8.50%us-gaap_FairValueInputsDiscountRate / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPStep1Member / us-gaap_RangeAxis = us-gaap_MaximumMember |
Oiltanking Partners L.P. - Step 1 [Member] | Minimum [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Cash flow projections discount rate (in hundredths) | 5.50%us-gaap_FairValueInputsDiscountRate / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPStep1Member / us-gaap_RangeAxis = us-gaap_MinimumMember |

X
- Definition Amount related to the option to purchase 100% of the issued and outstanding capital stock of the acquired entity. + References No definition available. + Details
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Namespace Prefix: | epd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of discounted future accumulated cash inflow. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Definition The expected business terms (in years), used as an input to measure fair value. + References No definition available. + Details
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Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The federal and state tax rate (in hundredths), used as an input to measure fair value. + References No definition available. + Details
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Data Type: | num:percentItemType
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- Definition The forecasted yield on company units (in hundredths), used as an input to measure fair value. + References No definition available. + Details
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Namespace Prefix: | epd_
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- Definition The expected interest rate on debt allocated post-option exercise, used as an input to measure fair value. + References No definition available. + Details
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Namespace Prefix: | epd_
Data Type: | xbrli:stringItemType
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- Definition The expected ownership interests in company (in hundredths), used as an input to measure fair value. + References No definition available. + Details
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Data Type: | num:percentItemType
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X
- Definition The expected partnership growth rate (in hundredths), used as an input to measure fair value. + References No definition available. + Details
Name: | epd_FairValueInputsPartnershipGrowthRate
Namespace Prefix: | epd_
Data Type: | num:percentItemType
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- Details
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X
- Definition Number of Enterprise Common Units Held at Exercise Date by OTA. + References No definition available. + Details
Name: | epd_NumberOfUnitsHeldByLimitedPartnerInMillionsOfUnits
Namespace Prefix: | epd_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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- Definition The probability weighted amount of discounted future accumulated cash inflow. + References No definition available. + Details
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Namespace Prefix: | epd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
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- Definition Number of shares of equity interests issued or issuable to acquire entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Details
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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Details
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- Details
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