Derivatives And Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2011

Derivatives And Fair Value Measurements [Abstract]

Estimated Fair Value Of Derivative Instruments Under Input Levels

	Asset Derivatives				Liability Derivatives
	September 30,		December 31,		September 30,		December 31,
	2011		2010		2011		2010
	(In thousands)				(In thousands)
Level 2 inputs	$	140,740	$	146,762	$	1,677	$	-
Level 3 inputs		67,110		-		-		-
Total	$	207,850	$	146,762	$	1,677	$	-

Changes In Level 3 Fair Values

	For the Three		For the Nine
	Months Ended		Months Ended
	September 30, 2011		September 30, 2011
	(In thousands)
Balance at beginning of period	$	19,115	$	-
Total gains for the period:
Included in OCI		18,258		18,258
Included in earnings		29,737		48,852
Balance at end of period	$	67,110	$	67,110
Total gains for the period included in earnings attributable to the change in unrealized gains related to assets held at September 30, 2011	$	29,737	$	48,852

Price Collars And Hedging For Anticipated NGL Production

Production	Daily Production
Year	Gas		NGL
	MMcfd		MBbld
2011		190		10.5
2012		165		6.0
2013		105		-
2014—2015		65		-
2016—2021		35		-

Estimated Fair Value Of Derivative Instruments

	Asset Derivatives				Liability Derivatives
	September 30,		December 31,		September 30,		December 31,
	2011		2010		2011		2010
	(In thousands)				(In thousands)
Derivatives designated as hedges(1) (2):
Commodity contracts reported in:
Current derivative assets	$	112,749	$	97,863	$	11,743	$	8,658
Noncurrent derivative assets		106,844		63,419		-		5,862
Current derivative liabilities		-		-		1,677		-
Total derivatives designated as hedges	$	219,593	$	161,282	$	13,420	$	14,520
Total derivatives	$	219,593	$	161,282	$	13,420	$	14,520

(1)	The fair value of our hedge derivatives is determined using Level 2 and Level 3 inputs.
(2)	The 10-year swap derivatives entered into during the second quarter of 2011 were designated as hedges on August 31, 2011.

Carrying Value Of Derivatives

	For the Three Months Ended September 30,
	2011			2010
	Commodity			Gas Purchase			Fair Value			Commodity
	Derivatives			Commitment			Derivatives			Derivatives			Total
	(In thousands)
Derivative fair value at beginning of period	$	116,349		$	(6,161	)	$	13,240		$	193,394		$	200,473
Change in net amounts receivable and payable		(576	)		-			(4,392	)		(234	)		(4,626	)
Net settlements reported in revenue		(16,815	)		-			-			(54,716	)		(54,716	)
Cash settlements reported in long-term debt		-			-			(12,134	)		-			(12,134	)
Unrealized change in fair value of Gas Purchase Commitment reported in costs of purchased gas		-			5,496			-			-			5,496
Change in fair value of effective interest swaps		-			-			3,286			-			3,286
Ineffectiveness reported in other revenue		880			-			-			(812	)		(812	)
Unrealized gains reported in other revenue		29,737			-			-			-			-
Unrealized gains reported in OCI		76,598			-			-			89,627			89,627
Derivative fair value at end of period	$	206,173		$	(665	)	$	-		$	227,259		$	226,594

	For the Nine Months Ended September 30,
	2011			2010
	Commodity			Gas Purchase			Fair Value			Commodity
	Derivatives			Commitment			Derivatives			Derivatives			Total
	(In thousands)
Derivative fair value at beginning of period	$	146,762		$	(6,625	)	$	4,108		$	107,881		$	105,364
Change in net amounts receivable and payable		(960	)		-			(9,180	)		(1,096	)		(10,276	)
Net settlements reported in revenue		(56,143	)		-			-			(136,349	)		(136,349	)
Net settlements reported in interest expense		-			-			(10,848	)		-			(10,848	)
Cash settlements reported in long-term debt		-			-			(30,816	)		-			(30,816	)
Unrealized change in fair value of Gas Purchase Commitment reported in costs of purchased gas		-			5,960			-			-			5,960
Change in fair value of effective interest swaps		-			-			46,736			-			46,736
Ineffectiveness reported in other revenue		1,698			-			-			(2,399	)		(2,399	)
Unrealized gains reported in other revenue		48,852			-			-			-			-
Unrealized gains reported in OCI		65,964			-			-			259,222			259,222
Derivative fair value at end of period	$	206,173		$	(665	)	$	-		$	227,259		$	226,594