Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2015

Fair Value Disclosures [Abstract]

Fair Value of Long-Term Debt

	December 31,
	2015				2014
	Recorded Amount		Fair Value		Recorded Amount		Fair Value
	(In thousands)
Long-term debt	$	3,852,019	$	3,810,981	$	2,934,131	$	2,994,935