Cash flow information (Tables)

9 Months Ended

Sep. 30, 2016

Supplemental Cash Flow Information [Abstract]

Supplemental cash flow information

Cash expenditures for interest and income taxes were as follows:

	Nine Months Ended
	September 30,
	2016		2015
	(In thousands)
Interest, net of amounts capitalized and AFUDC - borrowed of $842 and $6,989 in 2016 and 2015, respectively	$	66,281	$	69,253
Income taxes paid, net	$	73,771	$	39,543

Noncash investing transactions were as follows:

	September 30,
	2016		2015
	(In thousands)
Property, plant and equipment additions in accounts payable	$	22,560	$	15,348