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BENEFITS Benefits - Fair Value of Assets by Category (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Defined Benefit Plan, Fair Value of Plan Assets $ 114us-gaap_DefinedBenefitPlanFairValueOfPlanAssets $ 110us-gaap_DefinedBenefitPlanFairValueOfPlanAssets  
Cash and Cash Equivalents      
Defined Benefit Plan, Fair Value of Plan Assets 3us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CashAndCashEquivalentsMember		 3us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CashAndCashEquivalentsMember		  
Mutual Fund      
Defined Benefit Plan, Fair Value of Plan Assets $ 111us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= ete_MutualFundMember		 [1] $ 107us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= ete_MutualFundMember		 [1]  
Other Postretirement Benefit Plans, Defined Benefit      
Large Cap US Equitiies   38.00%ete_LargeCapUsEquitiies
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember		 32.00%ete_LargeCapUsEquitiies
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Fixed Income Securities   52.00%ete_FixedIncomeSecurities
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember		 55.00%ete_FixedIncomeSecurities
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Cash Fund Investments   10.00%ete_CashFundInvestments
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember		 7.00%ete_CashFundInvestments
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Other Investments - Plan Asset Allocation     6.00%ete_OtherInvestmentsPlanAssetAllocation
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
[1] This fund of funds invests primarily in a diversified portfolio of equity, fixed income and short-term mutual funds. As of December 31, 2014, the fund was primarily comprised of approximately 38% equities, 52% fixed income securities and 10% cash. As of December 31, 2013, the fund was primarily comprised of approximately 32% equities, 55% fixed income securities, 7% cash and 6% in other investments.