Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2012

Fair Value Measurements

Recurring Fair Value Measurements

	Fair Value as of September 30, 2012
	Level 1		Level 2		Level 3		Total
	(In thousands)
Assets:
Short-term investments:
Available-for-sale equity securities — energy industry	$	81,538	$	8,151	$	—	$	89,689
Available-for-sale debt securities
Commercial paper and CDs	180		—		—		180
Corporate debt securities	—		31,680		—		31,680
Mortgage-backed debt securities	—		246		—		246
Mortgage-CMO debt securities	—		1,078		—		1,078
Asset-backed debt securities	1,886		—		—		1,886
Trading securities — energy industry	23,242		—		—		23,242
Total short-term investments	$	106,846	$	41,155	$	—	$	148,001

Fair Value of Financial Instruments

	September 30, 2012				December 31, 2011
	Carrying Value		Fair Value		Carrying Value		Fair Value
	(In thousands)
5.375% senior notes due August 2012	$	—	$	—	$	274,604	$	281,188
6.15% senior notes due February 2018	968,403		1,155,180		967,490		1,113,986
9.25% senior notes due January 2019	1,125,000		1,470,139		1,125,000		1,419,514
5.00% senior notes due September 2020	697,572		769,146		697,343		734,475
4.625% senior notes due September 2021	697,847		726,285		697,667		708,176
Subsidiary preferred stock	69,188		68,625		69,188		68,625
Revolving credit facilities	1,190,000		1,190,000		860,000		860,000
Other	463		463		1,712		1,712
	$	4,748,473	$	5,379,838	$	4,693,004	$	5,187,676