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Equity and Distributions, Issuances of Equity (Details) (USD $) In Millions, except Share data, unless otherwise specified | 6 Months Ended | 0 Months Ended | 6 Months Ended | 1 Months Ended | 6 Months Ended
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Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 Distribution Reinvestment Plan [Member] | Jun. 30, 2013 Distribution Reinvestment Plan [Member] | Aug. 07, 2014 Distribution Reinvestment Plan [Member] EPCO and affiliates [Member] | Jun. 30, 2014 Distribution Reinvestment Plan [Member] EPCO and affiliates [Member] | Jun. 30, 2014 Employee Unit Purchase Plan [Member] | Jun. 30, 2013 Employee Unit Purchase Plan [Member] | Jun. 30, 2014 2013 At-the-Market Registration [Member] | Jul. 31, 2014 2012 At-the-Market Registration [Member] | Jun. 30, 2013 2012 At-the-Market Registration [Member]
Registration Statements and Equity Offerings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Maximum common units authorized for issuance |  |  |  |  |  |  |  |  | $ 1,250 |  |
Maximum common units authorized for issuance (in units) |  |  | 70,000,000 |  |  |  | 4,000,000 |  |  |  |
Remaining units available for issuance |  |  |  |  |  |  |  |  | 1,190 |  |
Remaining units available for issuance (in units) |  |  | 16,035,439 |  |  |  | 3,638,914 |  |  |  |
Net Cash Proceeds from Sale of Common Units [Abstract] |  |  |  |  |  |  |  |  |  |  |
Number of common units issued (in units) |  |  | 2,445,439 | 2,359,089 |  | 761,487 | 74,530 | 81,695 | 795,167 |  | 3,766,557
Gross proceeds from the sale of common units |  |  |  |  |  |  |  |  | 58.3 |  | 228.5
Net cash proceeds from the issuance of common units | 223.3 | 835.4 | 160.4 | 129.8 | 25.0 | 50.0 | 5.2 | 4.8 | 57.7 | 226.5 | 214.2
Senior notes issued under universal shelf registration | $ 2,000 |  |  |  |  |  |  |  |  |  |

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- Definition The remaining number of limited partner units available for issuance, after taking into account limited partner units issued to date. The limited partners are partners of a publicly traded limited partnership or master limited partnership. Limited partners have limited liability and do not manage the partnership. + References No definition available. + Details
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- Definition The dollar value of the remaining amount of limited partner units available for issuance, after taking into account limited partner units issued to date. The limited partners are partners of a publicly traded limited partnership or master limited partnership. Limited partners have limited liability and do not manage the partnership. + References No definition available. + Details
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- Definition "The dollar amount of limited partner units authorized to be issued in amounts, at prices and on terms to be determined by market conditions and other factors at the time of our offerings. + References No definition available. + Details
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- Definition The number of limited partner units authorized to be issued. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB TOPIC 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section F + Details
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- Definition Total units issued during the year due to the sale of units. All partners include general, limited and preferred partners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: 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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