Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2014

Supplemental Cash Flow Elements [Abstract]

Schedule of Cash Flow, Supplemental Disclosures

	Year Ended December 31
	2014			2013		2012
	(In thousands)
Cash paid for interest and financing charges, net of capitalized interest	$	52,122		$	90,695	$	134,979
Net cash paid (received) for taxes	(31,469		)	401,641		147,580
Non-cash additions to property, plant and equipment, including capital leases	7,455			6,672		4,060