Basis of Presentation and Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2017

Accounting Policies [Abstract]

Supplemental cash flow information

	For the Six Months Ended June 30,
	2017		2016
Cash paid during the year for:	(In thousands)
Interest	$	535,959	$	465,861
Income tax payments (refunds), net	$	9,977	$	(14,653	)