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Cash flow information (Tables)
3 Months Ended
Mar. 31, 2012
Cash flow information [Abstract]  
Cash expenditures for interest and income taxes
Cash expenditures for interest and income taxes were as follows:
 
Three Months Ended
 
March 31,
 
2012

2011

 
(In thousands)
Interest, net of amount capitalized
$
22,433

$
25,579

Income taxes, net
$
285

$
9,981

Noncash investing transactions [Table Text Block]
Noncash investing transactions were as follows:
 
Three Months Ended
 
March 31,
 
2012

2011

 
(In thousands)
Property, plant and equipment additions in accounts payable
$
51,739

$
15,838