Cash flow information (Tables)

3 Months Ended

Mar. 31, 2013

Cash flow information [Abstract]

Supplemental cash flow information

Cash expenditures for interest and income taxes were as follows:

	Three Months Ended
	March 31,
	2013			2012
	(In thousands)
Interest, net of amount capitalized	$	21,857		$	22,433
Income taxes paid (refunded), net	$	(7,246	)	$	285

Noncash investing transactions were as follows:

	March 31,
	2013		2012
	(In thousands)
Property, plant and equipment additions in accounts payable	$	92,236	$	51,739