Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2013

Long-Term Debt

Long-Term Debt

	As of December 31,
	2013		2012
	(Thousands)
7.76% notes, due 2014 thru 2016	$	18,316	$	32,973
5.00% notes, due October 1, 2015	150,000		150,000
5.15% notes, due March 1, 2018	200,000		200,000
6.50% notes, due April 1, 2018	500,000		500,000
8.13% notes, due June 1, 2019	700,000		700,000
4.88% notes, due November 15, 2021	750,000		750,000
7.75% debentures, due July 15, 2026	115,000		115,000
Medium-term notes:
8.7% to 9.0% Series A, due 2014 thru 2021	40,200		40,200
7.3% to 7.6% Series B, due 2015 thru 2023	20,000		30,000
7.6% Series C, due 2018	8,000		8,000
	2,501,516		2,526,173
Less debt payable within one year	11,162		23,204
Total long-term debt	$	2,490,354	$	2,502,969