Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Measurements

Recurring fair value measurements

	Fair Value as of March 31, 2018
	Level 1		Level 2		Level 3
	(In thousands)
Assets:
Short-term investments:
Available-for-sale equity securities	$	22,762	$	3,776	$	—
Mortgage-CMO debt securities		—		10		—
Total short-term investments	$	22,762	$	3,786	$	—

	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

	March 31, 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		316,642		303,489		321,028
5.00% senior notes due September 2020		669,922		671,610		669,846		670,757
4.625% senior notes due September 2021		695,168		672,116		695,108		665,003
5.50% senior notes due January 2023		600,000		586,524		600,000		584,850
5.10% senior notes due September 2023		346,608		330,061		346,576		325,844
0.75% senior exchangeable notes due January 2024		435,074		431,262		429,982		443,940
5.75% senior notes due February 2025		800,000		754,504		—		—
Revolving credit facility		445,000		445,000		510,000		510,000
Commercial paper		—		—		40,000		40,000
Other		375		375		181		181
		4,295,636	$	4,208,094		4,055,944	$	4,024,277
Less: deferred financing costs		39,101				27,997
	$	4,256,535			$	4,027,947