Debt (Tables)

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Schedule of Debt

Long-term Debt

	Interest rate	March 31, 2015		December 31, 2014
Notes due March 2015	5.0%	$	—	$	274,879
Notes due January 2016	4.75%	370,914		370,914
Notes due September 2017	5.75%	385,109		385,109
Notes due March 2018	5.6%	250,000		250,000
Notes due May 2018	4.75%	350,000		350,000
Notes due March 2019	6.25%	300,000		300,000
Notes due November 2022	5.25%	110,000		110,000
Notes due March 2024	4.625%	500,000		500,000
State of CT DECD loan due November 2024	2.0%	16,000		16,000
Notes due January 2037	5.25%	115,041		115,041
Notes due March 2043	6.7%	425,000		425,000
Term loans	Variable	130,000		130,000
Principal amount		2,952,064		3,226,943
Less: unamortized discount		6,269		6,653
Plus: unamortized interest rate swap proceeds		29,436		31,716
Total debt		2,975,231		3,252,006
Less: current portion long-term debt		420,914		324,879
Long-term debt		$	2,554,317	$	2,927,127