Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2011

Fair Value Measurements [Abstract]

Recurring Fair Value Measurements

	Fair Value as of June 30, 2011
	Level 1		Level 2		Level 3		Total
	(In thousands)
Assets:
Short-term investments:
Available-for-sale equity securities — energy industry	$	68,580	$	—	$	—	$	68,580
Available-for-sale debt securities
Commercial paper and CDs		1,216		—		—		1,216
Corporate debt securities		—		55,300		—		55,300
Mortgage-backed debt securities		—		370		—		370
Mortgage-CMO debt securities		—		2,754		—		2,754
Asset-backed debt securities		3,030		—		—		3,030
Trading securities — energy industry		12,970		—		—		12,970
Total short-term investments	$	85,796	$	58,424	$	—	$	144,220
Liabilities:
Derivative contract	$	—	$	2,578	$	—	$	2,578

Fair Value of Financial Instruments

	June 30, 2011				December 31, 2010
	Carrying Value		Fair Value		Carrying Value		Fair Value
	(In thousands)
0.94% senior exchangeable notes due May 2011	$	—	$	—	$	1,378,178	$	1,403,315
6.15% senior notes due February 2018		966,883		1,083,050		966,276		1,041,008
9.25% senior notes due January 2019		1,125,000		1,436,738		1,125,000		1,393,943
5.00% senior notes due September 2020		697,190		700,308		697,037		678,335
5.375% senior notes due August 2012(1)		274,291		287,876		273,977		291,500
Subsidiary preferred stock		69,188		68,625		69,188		68,625
Revolving credit facilities		1,200,000		1,200,000		—		—
Other		2,103		2,103		2,676		2,676
	$	4,334,655	$	4,778,700	$	4,512,332	$	4,879,402

(1) Includes $.5 million and $.7 million as of June 30, 2011 and December 31, 2010, respectively, related to the unamortized loss on an interest rate swap that was unwound during the fourth quarter of 2005.