Long-term Debt (Tables)

3 Months Ended

Mar. 31, 2012

Long-term Debt

Long-term debt includes the following:

	March 31, 2012			March 31, 2011			December 31, 2011
	(In thousands)
Medium-term notes due July 2012 to November 2013	$	100,000		$	150,000		$	100,000
2006 Senior Notes		—			200,000			—
2008 Senior Notes due March 2013		350,000			350,000			350,000
2010 Senior Notes due October 2020 and October 2040		500,000			500,000			500,000
2011 Senior Notes due November 2016 and November 2041		600,000			—			600,000
		1,550,000			1,200,000			1,550,000
Less: current portion		(400,000	)		(250,000	)		(50,000	)
Total long-term debt	$	1,150,000		$	950,000		$	1,500,000