Cash flow information (Tables)

6 Months Ended

Jun. 30, 2013

Cash flow information [Abstract]

Supplemental cash flow information

Cash expenditures for interest and income taxes were as follows:

	Six Months Ended
	June 30,
	2013			2012
	(In thousands)
Interest, net of amount capitalized	$	41,440		$	35,893
Income taxes paid (refunded), net	$	(2,649	)	$	2,418

Noncash investing transactions were as follows:

	June 30,
	2013		2012
	(In thousands)
Property, plant and equipment additions in accounts payable	$	77,073	$	76,505