Interest, Net (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest Income (Expense), Net [Abstract]
Interest on borrowings, net settlements on interest rate derivatives, and other liabilities	$ 196,176	$ 178,601	$ 172,798
Hedge ineffectiveness (gains) losses	371	2,893	(101)
Amortization of interest rate derivatives related to deferred losses	33,265	30,777	23,078
Amortization of deferred financing costs	14,719	12,449	15,271
Interest Expense	244,531	224,720	211,046
Less interest income	(774)	(597)	(390)
Less capitalized interest	0	(1,315)	(6,506)
Interest, net	$ 243,757	$ 222,808	$ 204,150