Property And Equipment, Net (Property And Equipment, Net (Including Assets Held Under Capital Leases)) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4,431,284	$ 4,250,861
Less: accumulated depreciation	(1,738,269)	(1,672,417)
Property and equipment, net	2,693,015	2,578,444
Towers and Related Components [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,990,091	3,821,482
Construction-In-Process [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	22,118	24,275
Furniture, Equipment and Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	41,982	40,274
Land, Buildings, and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 377,093	$ 364,830