Asset Acquisition (Proforma) (Details) (Clearfield Energy [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Clearfield Energy [Member]
Business Acquisition [Line Items]
Pro forma total revenues	$ 564,198	$ 1,235,782	$ 1,676,004
Pro forma net loss	(5,259)	(16,267)	(8,403)
Pro forma net income (loss) attributable to Crosstex Energy, L.P.	$ (4,896)	$ (9,091)	$ (12,457)
Basic and Diluted	$ (0.10)	$ (0.19)	$ (0.26)

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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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