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Equity-based Awards (Details) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Equity-based compensation expense [Abstract]      
Total compensation expense $ 87.5us-gaap_AllocatedShareBasedCompensationExpense $ 72.8us-gaap_AllocatedShareBasedCompensationExpense $ 60.0us-gaap_AllocatedShareBasedCompensationExpense
Equity-classified awards [Member] | Restricted Common Unit Awards [Member]      
Equity-based compensation expense [Abstract]      
Total compensation expense 42.1us-gaap_AllocatedShareBasedCompensationExpense
/ epd_AwardClassificationAxis
= epd_EquityClassifiedAwardsMember
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
71.5us-gaap_AllocatedShareBasedCompensationExpense
/ epd_AwardClassificationAxis
= epd_EquityClassifiedAwardsMember
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
57.0us-gaap_AllocatedShareBasedCompensationExpense
/ epd_AwardClassificationAxis
= epd_EquityClassifiedAwardsMember
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
Equity-classified awards [Member] | Unit Option Awards [Member]      
Equity-based compensation expense [Abstract]      
Total compensation expense 0us-gaap_AllocatedShareBasedCompensationExpense
/ epd_AwardClassificationAxis
= epd_EquityClassifiedAwardsMember
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
0.8us-gaap_AllocatedShareBasedCompensationExpense
/ epd_AwardClassificationAxis
= epd_EquityClassifiedAwardsMember
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
1.3us-gaap_AllocatedShareBasedCompensationExpense
/ epd_AwardClassificationAxis
= epd_EquityClassifiedAwardsMember
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
Equity-classified awards [Member] | Phantom Unit Awards [Member]      
Equity-based compensation expense [Abstract]      
Total compensation expense 45.1us-gaap_AllocatedShareBasedCompensationExpense
/ epd_AwardClassificationAxis
= epd_EquityClassifiedAwardsMember
/ us-gaap_AwardTypeAxis
= us-gaap_PhantomShareUnitsPSUsMember
0us-gaap_AllocatedShareBasedCompensationExpense
/ epd_AwardClassificationAxis
= epd_EquityClassifiedAwardsMember
/ us-gaap_AwardTypeAxis
= us-gaap_PhantomShareUnitsPSUsMember
0us-gaap_AllocatedShareBasedCompensationExpense
/ epd_AwardClassificationAxis
= epd_EquityClassifiedAwardsMember
/ us-gaap_AwardTypeAxis
= us-gaap_PhantomShareUnitsPSUsMember
Liability-classified awards [Member]      
Equity-based compensation expense [Abstract]      
Total compensation expense $ 0.3us-gaap_AllocatedShareBasedCompensationExpense
/ epd_AwardClassificationAxis
= epd_LiabilityClassifiedAwardsMember
$ 0.5us-gaap_AllocatedShareBasedCompensationExpense
/ epd_AwardClassificationAxis
= epd_LiabilityClassifiedAwardsMember
$ 1.7us-gaap_AllocatedShareBasedCompensationExpense
/ epd_AwardClassificationAxis
= epd_LiabilityClassifiedAwardsMember
Long-Term Incentive Plan (1998) [Member]      
Equity-based compensation expense [Abstract]      
Maximum number of common units that may be issued as awards (in units) 14,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= epd_LongTermIncentivePlan1998Member
   
Remaining number of common units available to be issued as awards (in units) 2,748,017us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= epd_LongTermIncentivePlan1998Member
   
Long-Term Incentive Plan (2008) [Member]      
Equity-based compensation expense [Abstract]      
Incremental number of units to be authorized annually (in units) 5,000,000epd_IncrementalNumberOfUnitsToBeAuthorized
/ us-gaap_PlanNameAxis
= epd_LongTermIncentivePlan2008Member
   
Maximum number of additional units to be authorized for issuance (in units) 70,000,000epd_MaximumNumberOfAdditionalUnitsToBeAuthorizedForIssuance
/ us-gaap_PlanNameAxis
= epd_LongTermIncentivePlan2008Member
   
Maximum number of common units that may be issued as awards (in units) 25,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= epd_LongTermIncentivePlan2008Member
   
Remaining number of common units available to be issued as awards (in units) 12,895,605us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= epd_LongTermIncentivePlan2008Member