Long-Term Debt (Tables)

6 Months Ended

Jun. 30, 2013

Long-Term Debt

Schedule of long-term debt

Debt is summarized below (in thousands):

	June 30, 2013		December 31, 2012
Credit Facility
Credit Facility, variable interest, due September 2017 (1)	$	—	$	—
Senior Notes (2)
2018 Senior Notes, 8.75% interest, net of discount of zero and $109, respectively, issued April and May 2008	—		81,003
2020 Senior Notes, 6.75% interest, issued November 2010 and due November 2020	500,000		500,000
2021 Senior Notes, 6.5% interest, net of discount of $505 and $826, respectively, issued February and March 2011 and due August 2021	324,495		499,174
2022 Senior Notes, 6.25% interest, issued October 2011 and due June 2022	455,000		700,000
2023A Senior Notes, 5.5% interest, net of discount of $6,791 and $7,126, respectively, issued August 2012 and due February 2023	743,209		742,874
2023B Senior Notes, 4.5% interest, issued January 2013 and due July 2023	1,000,000		—
Total long-term debt	$	3,022,704	$	2,523,051

(1) Applicable interest rate was 5.00% at June 30, 2013.

(2) The estimated aggregate fair value of the senior notes (collectively, the “Senior Notes”) was approximately $2,989.9 million and $2,763 million as of June 30, 2013 and December 31, 2012, respectively, based on quoted prices in an inactive market. The fair value of the Partnership’s Senior Notes is considered a Level 3 measurement.