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Intangible Assets and Goodwill, Goodwill (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended | 1 Months Ended
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Feb. 28, 2015
Changes in carrying amount of goodwill [Roll Forward] |  |  |  |
Balance at beginning of period | $ 2,080.0 us-gaap_Goodwill | $ 2,086.8 us-gaap_Goodwill | $ 2,092.3 us-gaap_Goodwill |
Goodwill adjustment | 0 us-gaap_GoodwillPurchaseAccountingAdjustments |  |  |
Goodwill related to the sale of assets | (0.1)us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit | (6.8)us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit |  |
Reclassification to assets held for sale |  |  | (5.5)us-gaap_GoodwillOtherChanges |
Goodwill related to Oiltanking acquisition | 2,120.0 us-gaap_GoodwillAcquiredDuringPeriod |  |  |
Balance at end of period | 4,199.9 us-gaap_Goodwill | 2,080.0 us-gaap_Goodwill | 2,086.8 us-gaap_Goodwill |
Fixed assets transferred |  | 73.7 epd_FixedAssetsTransferred |  |
Oiltanking Partners L.P. [Member] |  |  |  |
Changes in carrying amount of goodwill [Roll Forward] |  |  |  |
Goodwill related to Oiltanking acquisition | 2,120.0 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPMember |  |  | 1,460.0 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_BusinessAcquisitionAxis = epd_OiltankingPartnersLPMember
NGL Pipelines & Services [Member] |  |  |  |
Changes in carrying amount of goodwill [Roll Forward] |  |  |  |
Balance at beginning of period | 341.2 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_NglPipelinesAndServicesMember | 341.2 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_NglPipelinesAndServicesMember | 341.2 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_NglPipelinesAndServicesMember |
Goodwill adjustment | 520.0 us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = epd_NglPipelinesAndServicesMember |  |  |
Goodwill related to the sale of assets | 0 us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit / us-gaap_StatementBusinessSegmentsAxis = epd_NglPipelinesAndServicesMember | 0 us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit / us-gaap_StatementBusinessSegmentsAxis = epd_NglPipelinesAndServicesMember |  |
Reclassification to assets held for sale |  |  | 0 us-gaap_GoodwillOtherChanges / us-gaap_StatementBusinessSegmentsAxis = epd_NglPipelinesAndServicesMember |
Goodwill related to Oiltanking acquisition | 1,319.2 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = epd_NglPipelinesAndServicesMember |  |  |
Balance at end of period | 2,180.4 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_NglPipelinesAndServicesMember | 341.2 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_NglPipelinesAndServicesMember | 341.2 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_NglPipelinesAndServicesMember |
Onshore Natural Gas Pipelines & Services [Member] |  |  |  |
Changes in carrying amount of goodwill [Roll Forward] |  |  |  |
Balance at beginning of period | 296.3 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreNaturalGasPipelinesAndServicesMember | 296.3 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreNaturalGasPipelinesAndServicesMember | 296.3 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreNaturalGasPipelinesAndServicesMember |
Goodwill adjustment | 0 us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreNaturalGasPipelinesAndServicesMember |  |  |
Goodwill related to the sale of assets | 0 us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreNaturalGasPipelinesAndServicesMember | 0 us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreNaturalGasPipelinesAndServicesMember |  |
Reclassification to assets held for sale |  |  | 0 us-gaap_GoodwillOtherChanges / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreNaturalGasPipelinesAndServicesMember |
Goodwill related to Oiltanking acquisition | 0 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreNaturalGasPipelinesAndServicesMember |  |  |
Balance at end of period | 296.3 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreNaturalGasPipelinesAndServicesMember | 296.3 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreNaturalGasPipelinesAndServicesMember | 296.3 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreNaturalGasPipelinesAndServicesMember |
Onshore Crude Oil Pipelines & Services [Member] |  |  |  |
Changes in carrying amount of goodwill [Roll Forward] |  |  |  |
Balance at beginning of period | 305.1 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreCrudeOilPipelinesAndServicesMember | 311.2 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreCrudeOilPipelinesAndServicesMember | 311.2 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreCrudeOilPipelinesAndServicesMember |
Goodwill adjustment | 0 us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreCrudeOilPipelinesAndServicesMember |  |  |
Goodwill related to the sale of assets | 0 us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreCrudeOilPipelinesAndServicesMember | (6.1)us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreCrudeOilPipelinesAndServicesMember |  |
Reclassification to assets held for sale |  |  | 0 us-gaap_GoodwillOtherChanges / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreCrudeOilPipelinesAndServicesMember |
Goodwill related to Oiltanking acquisition | 554.8 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreCrudeOilPipelinesAndServicesMember |  |  |
Balance at end of period | 859.9 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreCrudeOilPipelinesAndServicesMember | 305.1 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreCrudeOilPipelinesAndServicesMember | 311.2 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_OnshoreCrudeOilPipelinesAndServicesMember |
Offshore Pipelines & Services [Member] |  |  |  |
Changes in carrying amount of goodwill [Roll Forward] |  |  |  |
Balance at beginning of period | 82.1 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_OffshorePipelinesAndServicesMember | 82.1 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_OffshorePipelinesAndServicesMember | 82.1 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_OffshorePipelinesAndServicesMember |
Goodwill adjustment | 0 us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = epd_OffshorePipelinesAndServicesMember |  |  |
Goodwill related to the sale of assets | (0.1)us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit / us-gaap_StatementBusinessSegmentsAxis = epd_OffshorePipelinesAndServicesMember | 0 us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit / us-gaap_StatementBusinessSegmentsAxis = epd_OffshorePipelinesAndServicesMember |  |
Reclassification to assets held for sale |  |  | 0 us-gaap_GoodwillOtherChanges / us-gaap_StatementBusinessSegmentsAxis = epd_OffshorePipelinesAndServicesMember |
Goodwill related to Oiltanking acquisition | 0 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = epd_OffshorePipelinesAndServicesMember |  |  |
Balance at end of period | 82.0 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_OffshorePipelinesAndServicesMember | 82.1 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_OffshorePipelinesAndServicesMember | 82.1 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_OffshorePipelinesAndServicesMember |
Petrochemical & Refined Products Services [Member] |  |  |  |
Changes in carrying amount of goodwill [Roll Forward] |  |  |  |
Balance at beginning of period | 1,055.3 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_PetrochemicalAndRefinedProductsServicesMember | 1,056.0 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_PetrochemicalAndRefinedProductsServicesMember | 1,061.5 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_PetrochemicalAndRefinedProductsServicesMember |
Goodwill adjustment | (520.0)us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = epd_PetrochemicalAndRefinedProductsServicesMember |  |  |
Goodwill related to the sale of assets | 0 us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit / us-gaap_StatementBusinessSegmentsAxis = epd_PetrochemicalAndRefinedProductsServicesMember | (0.7)us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit / us-gaap_StatementBusinessSegmentsAxis = epd_PetrochemicalAndRefinedProductsServicesMember |  |
Reclassification to assets held for sale |  |  | (5.5)us-gaap_GoodwillOtherChanges / us-gaap_StatementBusinessSegmentsAxis = epd_PetrochemicalAndRefinedProductsServicesMember |
Goodwill related to Oiltanking acquisition | 246.0 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = epd_PetrochemicalAndRefinedProductsServicesMember |  |  |
Balance at end of period | $ 781.3 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_PetrochemicalAndRefinedProductsServicesMember | $ 1,055.3 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_PetrochemicalAndRefinedProductsServicesMember | $ 1,056.0 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = epd_PetrochemicalAndRefinedProductsServicesMember |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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