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Commitments and Contingencies (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
bbl
Btu
Dec. 31, 2013
Dec. 31, 2012
Redelivery commitments [Abstract]      
Redelivery commitments of natural gas (in Btus) 9,200,000,000,000epd_NaturalGasToBeRedelivered    
Redelivery commitments of crude oil (in MMBbls) 9,300,000epd_CrudeOilToBeRedelivered    
Redelivery commitments of NGL and petrochemical products (in MMBbls) 28,300,000epd_ProductsToBeRedelivered    
Operating lease obligations [Abstract]      
Minimum term of material lease agreements (in years) 5 years    
Maximum term of material lease agreements (in years) 30 years    
Renewal option years for certain leases (in years) 20 years    
Lease and rental expense included in costs and expenses $ 94.2us-gaap_LeaseAndRentalExpense $ 87.6us-gaap_LeaseAndRentalExpense $ 95.1us-gaap_LeaseAndRentalExpense
Liabilities, Other than Long-term Debt, Noncurrent [Abstract]      
Noncurrent portion of asset retirement obligations 83.2us-gaap_AssetRetirementObligationsNoncurrent 82.5us-gaap_AssetRetirementObligationsNoncurrent  
Deferred revenues - non-current portion 73.0us-gaap_DeferredRevenueNoncurrent 54.6us-gaap_DeferredRevenueNoncurrent  
Liquidity Option Agreement 119.4epd_OptionAgreementFairValueDisclosure 0epd_OptionAgreementFairValueDisclosure  
Centennial guarantees 7.0epd_GuaranteeObligationNoncurrent 7.8epd_GuaranteeObligationNoncurrent  
Other 28.2epd_OtherLiabilitiesNoncurrentOther 27.4epd_OtherLiabilitiesNoncurrentOther  
Total 310.8us-gaap_OtherLiabilitiesNoncurrent 172.3us-gaap_OtherLiabilitiesNoncurrent  
Centennial debt guarantee [Member]      
Guarantor Obligations [Line Items]      
Percentage of debt obligations guaranteed (in hundredths) 50.00%epd_UnconsolidatedAffilatedDebtGuaranteedPercentage
/ us-gaap_GuaranteeObligationsByNatureAxis
= us-gaap_GuaranteeOfIndebtednessOfOthersMember
   
Guarantee of debt obligations 37.9us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_GuaranteeObligationsByNatureAxis
= us-gaap_GuaranteeOfIndebtednessOfOthersMember
   
Fair value of debt guarantee 5.4us-gaap_GuaranteeObligationsCurrentCarryingValue
/ us-gaap_GuaranteeObligationsByNatureAxis
= us-gaap_GuaranteeOfIndebtednessOfOthersMember
   
Centennial cash call guarantee [Member]      
Guarantor Obligations [Line Items]      
Cash call guarantee 50.0epd_CashCallGuarantee
/ us-gaap_GuaranteeObligationsByNatureAxis
= us-gaap_GuaranteeTypeOtherMember
   
Fair value of cash call guarantee 2.4epd_CashCallGuaranteeLiability
/ us-gaap_GuaranteeObligationsByNatureAxis
= us-gaap_GuaranteeTypeOtherMember
   
Junior Subordinated Note [Member]      
Debt Instrument [Line Items]      
Debt obligations 1,530.0us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtObligationsMember
   
Centennial Pipeline LLC [Member]      
Debt Instrument [Line Items]      
Debt obligations 75.8us-gaap_LongTermDebt
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= epd_CentennialPipelineLlcMember
   
Litigation matters [Member]      
Loss Contingencies [Line Items]      
Litigation accruals on an undiscounted basis 2.4us-gaap_LossContingencyAccrualAtCarryingValue
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_PendingLitigationMember
3.7us-gaap_LossContingencyAccrualAtCarryingValue
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_PendingLitigationMember
 
Litigation matters [Member] | ETP Lawsuit [Member]      
Loss Contingencies [Line Items]      
Loss contingency, damages awarded 319.4us-gaap_LossContingencyDamagesAwardedValue
/ us-gaap_LitigationCaseAxis
= epd_EtpLawsuitMember
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_PendingLitigationMember
   
Loss contingency, total damages sought 535.8us-gaap_LossContingencyDamagesSoughtValue
/ us-gaap_LitigationCaseAxis
= epd_EtpLawsuitMember
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_PendingLitigationMember
   
Loss contingency, disgorgement damages sought 150.0epd_LossContingencyDisgorgementDamagesSoughtValue
/ us-gaap_LitigationCaseAxis
= epd_EtpLawsuitMember
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_PendingLitigationMember
   
Prejudgment interest $ 66.4epd_PrejudgmentInterest
/ us-gaap_LitigationCaseAxis
= epd_EtpLawsuitMember
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_PendingLitigationMember
   
Post-judgment interest rate (in hundredths) 5.00%epd_PostJudgmentInterestRate
/ us-gaap_LitigationCaseAxis
= epd_EtpLawsuitMember
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= us-gaap_PendingLitigationMember