Long-Term Debt (Tables)

3 Months Ended

Mar. 31, 2014

Long-Term Debt [Abstract]

Long-term debt

Debt consisted of the following:

( in thousands )	As of
	March 31,			December 31,
	2014			2013
3.55% senior notes due in 2015	$	884,881		$	884,844
2.70% senior notes due in 2016		499,675			499,644
Total debt		1,384,556			1,384,488
Current portion of debt		(884,881	)		—
Debt (less current portion)	$	499,675		$	1,384,488
Fair value of debt*	$	1,425,056		$	1,429,921