Debt and Other Obligations (Components of Interest Expense and Amortization of Deferred Financing Costs) (Details) (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013	Jun. 30, 2012
Debt and Other Obligations [Abstract]
Interest expense on debt obligations	$ 119,705,000		$ 120,625,000		$ 247,154,000	$ 233,632,000
Amortization of deferred financing costs	5,013,000		5,278,000		14,060,000	10,090,000
Amortization of adjustments on long-term debt	(965,000)		2,961,000		10,471,000	6,724,000
Amortization of interest rate swaps	16,242,000	[1]	16,319,000	[1]	32,504,000	32,657,000
Other	261,000		(243,000)		436,000	(691,000)
Total	$ 140,256,000		$ 144,940,000		$ 304,625,000	$ 282,412,000

[1] Amounts reclassified from accumulated other comprehensive income (loss).