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Derivative Instruments, Hedging Activities and Fair Value Measurements, Level 3 Recurring Valuation Techniques (Details) (Level 3 [Member], USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Liability - Liquidity Option Agreement [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Fair Value Measurements, Valuation Techniques | Discounted cash flow |
Input description | Expected life of OTA following option exercise, Estimated growth rates in Enterprise’s earnings before interest, taxes, depreciation and amortization, OTA ownership interest in Enterprise common units, Interest rate on assumed debt of OTA following option exercise, Forecasted yield on Enterprise common units, Federal and state tax rate |
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 |
Liability - 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 |
Liability - 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 |
Asset commodity derivatives - Crude oil [Member] | Liability commodity derivatives - Crude oil [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Fair Value Measurements, Valuation Techniques | Discounted cash flow |
Input description | Forward commodity prices |
Asset commodity derivatives - Crude oil [Member] | Liability commodity derivatives - Crude oil [Member] | Minimum [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Fair value inputs, forward commodity price (in dollars per unit) | 49.26 epd_FairValueInputsForwardCommodityPrice / us-gaap_FairValueByAssetClassAxis = epd_AssetCommodityDerivativesCrudeOilMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityCommodityDerivativesCrudeOilMember / us-gaap_RangeAxis = us-gaap_MinimumMember | 89.55 epd_FairValueInputsForwardCommodityPrice / us-gaap_FairValueByAssetClassAxis = epd_AssetCommodityDerivativesCrudeOilMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityCommodityDerivativesCrudeOilMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Asset commodity derivatives - Crude oil [Member] | Liability commodity derivatives - Crude oil [Member] | Maximum [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Fair value inputs, forward commodity price (in dollars per unit) | 53.27 epd_FairValueInputsForwardCommodityPrice / us-gaap_FairValueByAssetClassAxis = epd_AssetCommodityDerivativesCrudeOilMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityCommodityDerivativesCrudeOilMember / us-gaap_RangeAxis = us-gaap_MaximumMember | 98.54 epd_FairValueInputsForwardCommodityPrice / us-gaap_FairValueByAssetClassAxis = epd_AssetCommodityDerivativesCrudeOilMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityCommodityDerivativesCrudeOilMember / us-gaap_RangeAxis = us-gaap_MaximumMember
Assets commodity derivatives - Natural gas [Member] | Liability commodity derivatives - Natural gas [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Fair Value Measurements, Valuation Techniques | Discounted cash flow |
Input description | Forward commodity prices |
Assets commodity derivatives - Natural gas [Member] | Liability commodity derivatives - Natural gas [Member] | Minimum [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Fair value inputs, forward commodity price (in dollars per unit) | 3.05 epd_FairValueInputsForwardCommodityPrice / us-gaap_FairValueByAssetClassAxis = epd_AssetsCommodityDerivativesNaturalGasMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityCommodityDerivativesNaturalGasMember / us-gaap_RangeAxis = us-gaap_MinimumMember |
Assets commodity derivatives - Natural gas [Member] | Liability commodity derivatives - Natural gas [Member] | Maximum [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Fair value inputs, forward commodity price (in dollars per unit) | 4.09 epd_FairValueInputsForwardCommodityPrice / us-gaap_FairValueByAssetClassAxis = epd_AssetsCommodityDerivativesNaturalGasMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityCommodityDerivativesNaturalGasMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
Fair Value, Measurements, Recurring [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Financial assets | $ 1.0 us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember |
Financial liabilities | 120.0 us-gaap_LiabilitiesFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember |
Fair Value, Measurements, Recurring [Member] | Liability commodity derivatives - Crude oil [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Financial liabilities | 0.4 us-gaap_LiabilitiesFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityCommodityDerivativesCrudeOilMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember | 0.7 us-gaap_LiabilitiesFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityCommodityDerivativesCrudeOilMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Fair Value, Measurements, Recurring [Member] | Liability commodity derivatives - Natural gas [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Financial liabilities | 0.2 us-gaap_LiabilitiesFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityCommodityDerivativesNaturalGasMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember |
Fair Value, Measurements, Recurring [Member] | Liability - Liquidity Option Agreement [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Financial liabilities | 119.4 us-gaap_LiabilitiesFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = epd_LiabilityLiquidityOptionAgreementMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember |
Fair Value, Measurements, Recurring [Member] | Asset commodity derivatives - Crude oil [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Financial assets | 1.0 us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = epd_AssetCommodityDerivativesCrudeOilMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember | 3.9 us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = epd_AssetCommodityDerivativesCrudeOilMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Fair Value, Measurements, Recurring [Member] | Assets commodity derivatives - Natural gas [Member] |  |
Fair Value Measurements, Recurring, Valuation Techniques [Line Items] |  |
Financial assets | $ 0 us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = epd_AssetsCommodityDerivativesNaturalGasMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember |

X
- Definition The expected business terms (in years), used as an input to measure fair value. + References No definition available. + Details
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- 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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- 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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- Definition The forward commodity price (in dollars per unit of measure), used as an input to measure fair value. + References No definition available. + Details
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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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- 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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- Definition The expected partnership growth rate (in hundredths), used as an input to measure fair value. + References No definition available. + Details
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- Definition The input used for the valuation of unobservable input. + References No definition available. + Details
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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + 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 (a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Description of the inputs and valuation technique(s) used to measure fair value. + 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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- Definition Fair value of financial and nonfinancial obligations. + 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 (a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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