Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2014

Fair Value Measurements

Recurring Fair Value Measurements

	Fair Value as of March 31, 2014
	Level 1		Level 2		Level 3		Total
	(In thousands)
Assets:
Short-term investments:
Available-for-sale equity securities (energy industry)	$	76,729	$	862	$	—	$	77,591
Available-for-sale debt securities:
Corporate debt securities	—		19,525		—		19,525
Mortgage-backed debt securities	—		209		—		209
Mortgage-CMO debt securities	—		20		—		20
Asset-backed debt securities	541		—		—		541
Total short-term investments	$	77,270	$	20,616	$	—	$	97,886

Fair Value of Financial Instruments

	March 31, 2014				December 31, 2013
	Carrying Value		Fair Value		Carrying Value		Fair Value
	(In thousands)
2.35% senior notes due September 2016	$	349,836	$	357,851	$	349,820	$	354,694
6.15% senior notes due February 2018	970,234		1,102,511		969,928		1,097,480
9.25% senior notes due January 2019	339,607		427,966		339,607		428,733
5.00% senior notes due September 2020	698,208		748,720		697,947		731,955
4.625% senior notes due September 2021	698,024		723,030		698,148		709,793
5.10% senior notes due September 2023	348,797		362,250		348,765		349,731
Subsidiary preferred stock	69,188		69,000		69,188		69,000
Revolving credit facility	117,500		117,500		170,000		170,000
Commercial paper	290,250		290,250		329,844		329,844
Other	5,316		5,316		10,243		10,243
Total	$	3,886,960	$	4,204,394	$	3,983,490	$	4,251,473