Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Measurements

Recurring fair value measurements

	Fair Value as of June 30, 2018
	Level 1		Level 2		Level 3
	(In thousands)
Assets:
Short-term investments:
Available-for-sale equity securities	$	39,327	$	3,926	$	—
Mortgage-CMO debt securities		—		9		—
Total short-term investments	$	39,327	$	3,935	$	—

	Fair Value as of December 31, 2017
	Level 1		Level 2		Level 3
	(In thousands)
Assets:
Short-term investments:
Available-for-sale equity securities	$	22,909	$	5,450	$	—
Mortgage-CMO debt securities		—		10		—
Total short-term investments	$	22,909	$	5,460	$	—

Fair value of financial instruments

	June 30, 2018				December 31, 2017
	Carrying		Fair		Carrying		Fair
	Value		Value		Value		Value
	(In thousands)				(In thousands)
6.15% senior notes due February 2018	$	—	$	—	$	460,762	$	462,674
9.25% senior notes due January 2019		303,489		312,457		303,489		321,028
5.00% senior notes due September 2020		669,999		675,386		669,846		670,757
4.625% senior notes due September 2021		695,228		683,208		695,108		665,003
5.50% senior notes due January 2023		600,000		579,036		600,000		584,850
5.10% senior notes due September 2023		346,640		327,901		346,576		325,844
0.75% senior exchangeable notes due January 2024		440,189		454,969		429,982		443,940
5.75% senior notes due February 2025		800,000		761,600		—		—
Revolving credit facility		—		—		510,000		510,000
Commercial paper		—		—		40,000		40,000
Other		243		243		181		181
		3,855,788	$	3,794,800		4,055,944	$	4,024,277
Less: current portion		243				181
Less: deferred financing costs		36,932				27,997
	$	3,818,613			$	4,027,766