Fair Value Measures (Tables)

3 Months Ended

Mar. 31, 2012

Partnership's Derivative Assets And Liabilities Measured At Fair Value On A Recurring Basis

The following table presents the Partnership’s derivative assets and liabilities measured at fair value on a recurring basis:



	Fair Value Measurements at March 31, 2012						Fair Value Measurements at December 31, 2011
	Fair Value Total		Significant Observable Inputs (Level 2)		Unobservable Inputs (Level 3)		Fair Value Total		Significant Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
Assets:
Commodity Derivatives:
Natural Gas	$	4,677	$	4,677	$	—	$	3,907	$	3,907	$	—
NGLs	394		394		—		94		94		—
Condensate	44		44		—		538		538		—
Ethane - Put Options	880		880		—		309		309		—
Total Assets	$	5,995	$	5,995	$	—	$	4,848	$	4,848	$	—
Liabilities:
Interest Rate Derivatives	$	—	$	—	$	—	$	470	$	470	$	—
Commodity Derivatives:
Natural Gas	—		—		—		—		—		—
NGLs	3,809		3,809		—		8,561		8,561		—
Condensate	2,178		2,178		—		1,567		1,567		—
Embedded Derivatives in Series A Preferred Units	38,553		—		38,553		39,049		—		39,049
Total Liabilities	$	44,540	$	5,987	$	38,553	$	49,647	$	10,598	$	39,049

Fair Value, Significant Unobservable Inputs for Estimation of Embedded Derivitives [Table Text Block]

The following table presents the material unobservable inputs used to estimate the fair value of the embedded derivatives in the Series A Preferred Units:



Unobservable Input	March 31, 2012
Credit Spread	6.89	%
Volatility	16.06	%

Changes In Level 3 Derivatives Measured On A Recurring Basis

The following table presents the changes in Level 3 derivatives measured on a recurring basis for the three months ended March 31, 2012. There were no transfers between the fair value hierarchy levels for the three months ended March 31, 2012.



	Embedded Derivatives in Series A Preferred Units
Balance at December 31, 2011	$	39,049
Change in fair value	(496		)
Balance at March 31, 2012	$	38,553

Schedule Of Estimated Fair Value Of Senior Notes [Table Text Block]

The following table presents the estimated fair value of senior notes, based on third party market value quotations (Level 1), as of March 31, 2012 and December 31, 2011:



Outstanding Senior Notes	March 31, 2012		December 31, 2011
$250 million senior notes due 2016	$	275,313	$	276,250
$600 million senior notes due 2018	634,128		643,500
$500 million senior notes due 2021	524,750		516,250

- Definition

Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value.

+ References

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-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 12: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-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

- Definition

Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability.

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