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Significant Risks and Uncertainties (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Insurance Matters [Abstract]      
Minimum insurance deductible per incident $ 5.0epd_MinimumInsuranceDeductiblePerIncident    
Maximum insurance deductible per incident 60.0epd_MaximumInsuranceDeductiblePerIncident    
February 2011 West Storage Incident [Member]      
Loss Contingencies [Line Items]      
Gains related to property damage proceeds 95.0epd_GainsRelatedToPropertyDamageProceeds
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_DamageFromFireExplosionOrOtherHazardMember		 15.0epd_GainsRelatedToPropertyDamageProceeds
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_DamageFromFireExplosionOrOtherHazardMember		 30.0epd_GainsRelatedToPropertyDamageProceeds
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_DamageFromFireExplosionOrOtherHazardMember
Proceeds from property damage insurance recoveries $ 95.0us-gaap_ProceedsFromInsuranceSettlementInvestingActivities
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_DamageFromFireExplosionOrOtherHazardMember		 $ 15.0us-gaap_ProceedsFromInsuranceSettlementInvestingActivities
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_DamageFromFireExplosionOrOtherHazardMember		 $ 30.0us-gaap_ProceedsFromInsuranceSettlementInvestingActivities
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_DamageFromFireExplosionOrOtherHazardMember
Shell Oil Company [Member] | Revenues [Member]      
Revenue, Major Customer [Line Items]      
Largest non-affiliated customer percentage (in hundredths) 8.50%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesMember
/ us-gaap_MajorCustomersAxis
= epd_ShellOilCompanyMember