Derivative Instruments (Details 1) (USD $)	1 Months Ended	4 Months Ended	5 Months Ended	6 Months Ended		12 Months Ended
	Mar. 22, 2013	May 03, 2012	May 22, 2013 Number	Jul. 02, 2013 Number	Jul. 12, 2013 Number	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 01, 2013 Number	Nov. 01, 2013 Number	Apr. 04, 2013 Number	Jan. 15, 2013 Number
Derivative Instruments (Details) [Abstract]
Number of Foreign Currency Derivatives Held			3	2	3				3	1	3	3
Hedging losses included in accumulated other comprehensive income	$ (2,309,000)	$ 2,772,000	$ 13,071,000	$ 4,872,000	$ 63,514,000	$ 1,890,000
Notional amount of swap				144,411,000
Loss (gain) on derivatives, net			10,355,000			(4,470,000)	1,825,000	0
Senior unsecured notes						$ 7,379,308,000	$ 6,114,151,000