Debt and Other Obligations (Components of Interest Expense and Amortization of Deferred Financing Costs) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Debt and Other Obligations [Abstract]
Interest expense on debt obligations	$ 123,930		$ 119,705		$ 249,449		$ 247,154
Amortization of deferred financing costs	5,521		5,013		11,162		14,060
Amortization of adjustments on long-term debt	(896)		(965)		(1,851)		10,471
Amortization of interest rate swaps	16,162	[1]	16,242	[1]	32,344	[1]	32,504	[1]
Other	(183)		261		(170)		436
Total	$ 144,534		$ 140,256		$ 290,934		$ 304,625

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