Debt and Other Obligations (Components of Interest Expense and Amortization of Deferred Financing Costs) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Debt and Other Obligations [Abstract]
Interest expense on debt obligations	$ 121,450		$ 121,246		$ 370,899		$ 368,400
Amortization of deferred financing costs	5,516		5,366		16,678		19,426
Amortization of adjustments on long-term debt	(892)		(971)		(2,743)		9,500
Amortization of interest rate swaps	15,551	[1]	16,222	[1]	47,895	[1]	48,726	[1]
Other	(338)		153		(508)		589
Total	$ 141,287		$ 142,016		$ 432,221		$ 446,641

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