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Partnership Operations, Organization and Basis of Presentation (Details) bbl in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 Segment mi bbl Bcf | Dec. 31, 2014
Related Party Transaction [Line Items] |  |
Number of miles of pipelines | mi | 50,000 |
Number of barrels of storage capacity | bbl | 260 |
Number of cubic feet of storage capacity | Bcf | 14 |
Number of reportable segments | Segment | 4 |
Limited partners ownership interest | 100.00% |
EPCO and its privately held affiliates [Member] |  |
Related Party Transaction [Line Items] |  |
Percentage of Total Units Outstanding | 32.00% |
Oiltanking Partners L.P. [Member] |  |
Business Acquisition [Line Items] |  |
Limited partner interests acquired |  | 65.90%

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- Definition Refers to number of barrels of storage capacity for petrochemicals, refined products, NGLs and crude oil. + References No definition available. + Details
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- Definition Refers to number of cubic feet of storage capacity. + References No definition available. + Details
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- Definition Refers to number of miles of onshore and offshore pipelines as a part of assets of the entity. + References No definition available. + Details
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- Definition Percentage of voting equity interests acquired in a business combination achieved in stages, including equity interests in the acquiree held by the acquirer immediately before the acquisition date and acquired at the acquisition date. + References No definition available. + Details
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- Definition Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
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