Partnership Operations, Organization and Basis of Presentation (Details)	9 Months Ended	12 Months Ended
Sep. 30, 2011	Dec. 31, 2010
Partnership Operations, Organization and Basis of Presentation [Abstract]
Limited partners ownership interest (in hundredths)	100.00%
Mergers [Line Items]
Merger exchange ratio for retroactive presentation of earnings per unit		1.5
Common units [Member] \| Holdings Merger [Member]
Mergers [Line Items]
Common unit exchange ratio in connection with merger		1.5
Common units issued in connection with merger (in units)		208,813,454
Common units cancelled immediately after merger (in units)		21,563,177
General partner ownership interest cancelled as a result of merger (in hundredths)		2.00%
Number of years a privately held affiliate agreed to waive regular quarterly cash distributions (in years)		5Y
Merger exchange ratio for retroactive presentation of earnings per unit		1.5
Common units [Member] \| Duncan Merger [Member]
Mergers [Line Items]
Common unit exchange ratio in connection with merger	1.01
Common units issued in connection with merger (in units)	24,277,310

The economic general partner interest and its incentive distribution rights in Enterprise that were cancelled in connection with the merger.

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Per-unit exchange ratio in a merger.

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The number of common units cancelled immediately after the merger.

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The number of years a privately held affiliate agreed to waive the regular quarterly cash distributions after the merger closing date.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Basis for determining value of equity interest issued or issuable to acquire the entity.

+ 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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 Emerging Issues Task Force (EITF)

-Number 99-12

-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.

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Number of shares of equity interests issued or issuable to acquire entity.

+ References

+ Details

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- Definition

The number of units or percentage investment held by one or more members or limited partners of the LLC or 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

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