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Acquisitions (Narrative) (Details) (USD $) | 0 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended |  |  | 1 Months Ended |  |  |  | 1 Months Ended |  |  |  |  |  | 3 Months Ended | 12 Months Ended |  |  |  |  |  |  |  | 12 Months Ended
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Dec. 28, 2010 | Mar. 31, 2012 | Jul. 31, 2011 | Nov. 30, 2010 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Jan. 31, 2012 Gulf Of Mexico Crude Oil Pipeline Systems [Member] | Nov. 23, 2010 Cameron Highway Oil Pipeline Company [Member] | Dec. 31, 2010 Cameron Highway Oil Pipeline Company [Member] | Dec. 31, 2012 Cameron Highway Oil Pipeline Company [Member] mi | Dec. 31, 2011 Cameron Highway Oil Pipeline Company [Member] | Aug. 31, 2011 FMT Black Oil Barge Transportation Business [Member] | Aug. 09, 2011 FMT Black Oil Barge Transportation Business [Member] Barge push_boats | Jan. 03, 2012 FMT Lease [Member] | Aug. 09, 2011 FMT Black Oil Barge Transportation Business Fuel Inventory And Other Cost [Member] | Nov. 30, 2011 Garco Refinery [Member] mi | Nov. 30, 2011 Garco Refinery Petroleum Inventories [Member] | Aug. 09, 2011 FMT Lease [Member] FMT Black Oil Barge Transportation Business [Member] Barge | Jan. 03, 2012 Poseidon Oil Pipeline Company, L.L.C. [Member] | Jan. 03, 2012 Marathon Offshore Pipeline, LLC [Member] | Jan. 03, 2012 Odyssey Pipeline L.L.C. [Member] | Dec. 31, 2012 Eugene Island Pipeline System [Member] | Dec. 31, 2012 Two Offshore Smaller Pipelines [Member] Pipelines | Nov. 30, 2010 CHOPS [Member] | Nov. 30, 2010 CHOPS [Member] Cameron Highway Oil Pipeline Company [Member] | Sep. 30, 2010 DG Marine [Member] | Dec. 31, 2010 DG Marine [Member] | Jul. 31, 2010 DG Marine [Member] | Dec. 31, 2012 Minimum [Member] Cameron Highway Oil Pipeline Company [Member] in | Nov. 30, 2011 Minimum [Member] Garco Refinery [Member] in | Dec. 31, 2012 Maximum [Member] Cameron Highway Oil Pipeline Company [Member] in | Nov. 30, 2011 Maximum [Member] Garco Refinery [Member] in | Jul. 31, 2010 TD Marine LLC [Member] DG Marine [Member] | Dec. 31, 2012 Enterprise Products Partners, L.P. [Member] Poseidon Oil Pipeline Company, L.L.C. [Member] | Dec. 31, 2012 Enterprise Products Partners, L.P. [Member] Odyssey Pipeline L.L.C. [Member] | Dec. 31, 2012 Enterprise Products Partners, L.P. [Member] CHOPS [Member] Cameron Highway Oil Pipeline Company [Member] | Dec. 31, 2012 Pipeline Transportation [Member] | Dec. 31, 2011 Pipeline Transportation [Member] | Dec. 31, 2010 Pipeline Transportation [Member] | Dec. 31, 2012 Pipeline Transportation [Member] Gulf Of Mexico Crude Oil Pipelines [Member]
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 90.00% |  |  | 28.00% | 100.00% | 29.00% | 23.00% | 100.00% | 50.00% |  |  |  | 49.00% |  |  |  |  |  | 36.00% | 71.00% |  |  |  |  |  |  |  |
Number of piepelines |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price of acquired entity |  |  |  |  |  |  |  |  |  |  |  | $ 330,000,000 |  |  |  |  | $ 143,500,000 | $ 30,900,000 | $ 2,500,000 | $ 20,000,000 | $ 1,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective date of acquisition |  |  |  |  |  |  |  |  |  |  | Jan. 03, 2012 |  |  |  |  | Aug. 01, 2011 |  |  |  | Nov. 01, 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of barges acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30 |  |  |  |  | 7 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of push boats acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds received from offering, net of costs |  | 169,421,000 | 184,969,000 | 118,837,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pipeline capacity, barrels per day |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000 |  |  |  |  |  | 3,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pipeline length, in miles |  |  |  |  |  |  |  |  |  |  |  |  |  | 380 |  |  |  |  |  | 300 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pipeline diameter, in inches |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 24 | 3 | 30 | 6 |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  | 51.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price adjustments |  |  |  |  |  |  |  |  |  |  |  | 2,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of units for cash, shares |  |  |  |  |  |  |  |  |  |  |  |  | 5,175,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Price per share of common units issued |  | $ 30.80 | $ 26.30 | $ 23.58 |  |  |  |  |  |  |  | $ 23.58 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of senior unsecured notes, including premium |  |  |  |  | 101,000,000 |  | 0 |  | 250,000,000 |  |  |  | 250,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Partners' interest percentage | 2.00% |  |  |  |  |  |  |  |  |  |  | 2.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of common units and general partner contribution net of issuance costs |  |  |  |  |  |  |  |  |  |  |  |  | 119,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of interest In joint venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |
Cash paid for acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 330,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25,500,000 |  |  |  |  |  |  |  |  |  |
Pay off of outstanding principal balance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 44,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  | 40,921,000 |  | 35,767,000 |  | 22,924,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification of the noncontrolling interest to partners capital account in business acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 21,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reduction in partners' capital due to acquisitions |  |  |  |  |  |  |  |  | 26,288,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contributions from partners' capital |  |  |  | 2,490,000 |  |  |  |  | 2,541,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Transaction costs related to business acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in capital due to acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information, Expenditures for Additions to Long-Lived Assets |  |  |  |  | $ 426,298,000 | [1] | $ 186,994,000 | [1] | $ 336,730,000 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 328,710,000 | [1] | $ 14,501,000 | [1] | $ 333,557,000 | [1] | $ 205,600,000
[1] | Capital expenditures include maintenance and growth capital expenditures, such as fixed asset additions (including enhancements to existing facilities and construction of internal growth projects) as well as acquisitions of businesses and interests in equity investees. Capital spending in our pipeline transportation segment included $63.7 million during the year ended December 31, 2012 representing capital contributions to our SEKCO equity investee to fund our share of the construction costs for its pipeline. During the same period, capital spending in our pipeline transportation segment also included $205.6 million for the acquisition of interests in several Gulf of Mexico pipelines. During 2012, capital spending in our supply and logistics segment also included $30.9 million for the purchase of barge assets.

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- Definition Total expenditures for additions to long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets of the reportable segment; if the amount: (a) is included in the determination of segment assets reviewed by the chief operating decision maker or (b) is otherwise regularly provided to the chief operating decision maker, even if not included in the determination of segment assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 28 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 24 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Change in the different classes of partners' capital accounts during the year due to acquisitions. Partners include general, limited and preferred partners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Practice Bulletin (PB) -Number 14 -Paragraph 15 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187171-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Total contributions made by each class of partners (i.e., general, limited and preferred partners). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Practice Bulletin (PB) -Number 14 -Paragraph 15 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187171-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Changes in the ownership interest during the period of each class of partners. Partners include general, limited and preferred partners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Practice Bulletin (PB) -Number 14 -Paragraph 15 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187171-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Monetary value of the issuance of new units of limited partnership interest in a public offering, net of offering costs. This is a parenthetical disclosure. + 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 5 -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187171-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The cash inflow from the issuance of long-term debt that is not secured by collateral. Excludes proceeds from tax exempt unsecured debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3255-108585 + Details
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- Definition Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section H + Details
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